[Java][retrofit2] Fix for Issue #7446 (#7659)

* [Java][retrofit2] Fix for issue #7446: file upload sets filename as baseName instead of a dynamic filename. The solution is to use okhttp3.MultipartBody.Part instead of RequestBody in formParams template. * Changes corresponding to review comments * Petstore Samples * Fixed tests
2018-02-22 13:45:19 +00:00 · 2018-02-22 13:45:19 +00:00 · d4543a99e3
commit d4543a99e3
parent b4827beba4
73 changed files with 130 additions and 115 deletions
--- a/modules/swagger-codegen/src/main/resources/Java/libraries/retrofit2/api.mustache
+++ b/modules/swagger-codegen/src/main/resources/Java/libraries/retrofit2/api.mustache
@ -20,6 +20,7 @@ import retrofit2.http.*;

 import okhttp3.RequestBody;
 import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;

 {{#imports}}import {{import}};
 {{/imports}}
--- a/modules/swagger-codegen/src/main/resources/Java/libraries/retrofit2/formParams.mustache
+++ b/modules/swagger-codegen/src/main/resources/Java/libraries/retrofit2/formParams.mustache
@ -1 +1 @@
-{{#isFormParam}}{{#notFile}}{{#isMultipart}}@retrofit2.http.Part{{/isMultipart}}{{^isMultipart}}@retrofit2.http.Field{{/isMultipart}}("{{baseName}}") {{{dataType}}} {{paramName}}{{/notFile}}{{#isFile}}{{#isMultipart}}@retrofit2.http.Part{{/isMultipart}}{{^isMultipart}}@retrofit2.http.Field{{/isMultipart}}{{#usePlayWS}} okhttp3.MultipartBody.Part {{/usePlayWS}}{{^usePlayWS}}("{{baseName}}\"; filename=\"{{baseName}}") RequestBody {{/usePlayWS}}{{paramName}}{{/isFile}}{{/isFormParam}}
+{{#isFormParam}}{{#notFile}}{{#isMultipart}}@retrofit2.http.Part{{/isMultipart}}{{^isMultipart}}@retrofit2.http.Field{{/isMultipart}}("{{baseName}}") {{{dataType}}} {{paramName}}{{/notFile}}{{#isFile}}{{#isMultipart}}@retrofit2.http.Part{{/isMultipart}}{{^isMultipart}}@retrofit2.http.Field{{/isMultipart}} MultipartBody.Part {{paramName}}{{/isFile}}{{/isFormParam}}
--- a/samples/client/petstore/java/retrofit2-play24/docs/UserApi.md
+++ b/samples/client/petstore/java/retrofit2-play24/docs/UserApi.md
@ -206,7 +206,7 @@ Get user by user name


 UserApi apiInstance = new UserApi();
-String username = "username_example"; // String | The name that needs to be fetched. Use user1 for testing. 
+String username = "username_example"; // String | The name that needs to be fetched. Use user1 for testing.
 try {
    User result = apiInstance.getUserByName(username);
    System.out.println(result);
@ -220,7 +220,7 @@ try {

 Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
- **username** | **String**| The name that needs to be fetched. Use user1 for testing.  |
+ **username** | **String**| The name that needs to be fetched. Use user1 for testing. |

 ### Return type

--- a/samples/client/petstore/java/retrofit2-play24/src/main/java/io/swagger/client/api/PetApi.java
+++ b/samples/client/petstore/java/retrofit2-play24/src/main/java/io/swagger/client/api/PetApi.java
@ -120,7 +120,7 @@ public interface PetApi {
  @retrofit2.http.Multipart
  @POST("pet/{petId}/uploadImage")
  F.Promise<Response<ModelApiResponse>> uploadFile(
-    @retrofit2.http.Path("petId") Long petId, @retrofit2.http.Part("additionalMetadata") String additionalMetadata, @retrofit2.http.Part okhttp3.MultipartBody.Part file
+    @retrofit2.http.Path("petId") Long petId, @retrofit2.http.Part("additionalMetadata") String additionalMetadata, @retrofit2.http.Part MultipartBody.Part file
  );

 }
--- a/samples/client/petstore/java/retrofit2-play24/src/main/java/io/swagger/client/api/UserApi.java
+++ b/samples/client/petstore/java/retrofit2-play24/src/main/java/io/swagger/client/api/UserApi.java
@ -67,7 +67,7 @@ public interface UserApi {
  /**
   * Get user by user name
   * 
-   * @param username The name that needs to be fetched. Use user1 for testing.  (required)
+   * @param username The name that needs to be fetched. Use user1 for testing. (required)
   * @return Call&lt;User&gt;
   */
  @GET("user/{username}")
--- a/samples/client/petstore/java/retrofit2-play25/.swagger-codegen/VERSION
+++ b/samples/client/petstore/java/retrofit2-play25/.swagger-codegen/VERSION
@ -1 +1 @@
-2.3.1-SNAPSHOT
+2.4.0-SNAPSHOT
--- a/samples/client/petstore/java/retrofit2-play25/build.gradle
+++ b/samples/client/petstore/java/retrofit2-play25/build.gradle
@ -98,7 +98,7 @@ ext {
    retrofit_version = "2.3.0"
    jackson_version = "2.7.8"
    play_version = "2.5.14"
-    swagger_annotations_version = "1.5.15"
+    swagger_annotations_version = "1.5.17"
    junit_version = "4.12"
    threetenbp_version = "1.3.5"
    json_fire_version = "1.8.0"
--- a/samples/client/petstore/java/retrofit2-play25/build.sbt
+++ b/samples/client/petstore/java/retrofit2-play25/build.sbt
@ -16,7 +16,7 @@ lazy val root = (project in file(".")).
      "com.fasterxml.jackson.core" % "jackson-annotations" % "2.7.8" % "compile",
      "com.fasterxml.jackson.core" % "jackson-databind" % "2.7.8" % "compile",
      "com.squareup.retrofit2" % "converter-jackson" % "2.3.0" % "compile",
-      "io.swagger" % "swagger-annotations" % "1.5.15" % "compile",
+      "io.swagger" % "swagger-annotations" % "1.5.17" % "compile",
      "org.apache.oltu.oauth2" % "org.apache.oltu.oauth2.client" % "1.0.1" % "compile",
      "org.threeten" % "threetenbp" % "1.3.5" % "compile",
      "io.gsonfire" % "gson-fire" % "1.8.0" % "compile",
--- a/samples/client/petstore/java/retrofit2-play25/docs/FakeApi.md
+++ b/samples/client/petstore/java/retrofit2-play25/docs/FakeApi.md
@ -242,7 +242,7 @@ No authorization required

 <a name="testEndpointParameters"></a>
 # **testEndpointParameters**
-> Void testEndpointParameters(number, _double, patternWithoutDelimiter, _byte, integer, int32, int64, _float, string, binary, date, dateTime, password, paramCallback)
+> testEndpointParameters(number, _double, patternWithoutDelimiter, _byte, integer, int32, int64, _float, string, binary, date, dateTime, password, paramCallback)

 Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 

@ -280,8 +280,7 @@ OffsetDateTime dateTime = new OffsetDateTime(); // OffsetDateTime | None
 String password = "password_example"; // String | None
 String paramCallback = "paramCallback_example"; // String | None
 try {
-    Void result = apiInstance.testEndpointParameters(number, _double, patternWithoutDelimiter, _byte, integer, int32, int64, _float, string, binary, date, dateTime, password, paramCallback);
-    System.out.println(result);
+    apiInstance.testEndpointParameters(number, _double, patternWithoutDelimiter, _byte, integer, int32, int64, _float, string, binary, date, dateTime, password, paramCallback);
 } catch (ApiException e) {
    System.err.println("Exception when calling FakeApi#testEndpointParameters");
    e.printStackTrace();
@ -309,7 +308,7 @@ Name | Type | Description  | Notes

 ### Return type

-[**Void**](.md)
+null (empty response body)

 ### Authorization

@ -322,7 +321,7 @@ Name | Type | Description  | Notes

 <a name="testEnumParameters"></a>
 # **testEnumParameters**
-> Void testEnumParameters(enumFormStringArray, enumFormString, enumHeaderStringArray, enumHeaderString, enumQueryStringArray, enumQueryString, enumQueryInteger, enumQueryDouble)
+> testEnumParameters(enumFormStringArray, enumFormString, enumHeaderStringArray, enumHeaderString, enumQueryStringArray, enumQueryString, enumQueryInteger, enumQueryDouble)

 To test enum parameters

@ -345,8 +344,7 @@ String enumQueryString = "-efg"; // String | Query parameter enum test (string)
 Integer enumQueryInteger = 56; // Integer | Query parameter enum test (double)
 Double enumQueryDouble = 3.4D; // Double | Query parameter enum test (double)
 try {
-    Void result = apiInstance.testEnumParameters(enumFormStringArray, enumFormString, enumHeaderStringArray, enumHeaderString, enumQueryStringArray, enumQueryString, enumQueryInteger, enumQueryDouble);
-    System.out.println(result);
+    apiInstance.testEnumParameters(enumFormStringArray, enumFormString, enumHeaderStringArray, enumHeaderString, enumQueryStringArray, enumQueryString, enumQueryInteger, enumQueryDouble);
 } catch (ApiException e) {
    System.err.println("Exception when calling FakeApi#testEnumParameters");
    e.printStackTrace();
@ -368,7 +366,7 @@ Name | Type | Description  | Notes

 ### Return type

-[**Void**](.md)
+null (empty response body)

 ### Authorization

@ -381,7 +379,7 @@ No authorization required

 <a name="testInlineAdditionalProperties"></a>
 # **testInlineAdditionalProperties**
-> Void testInlineAdditionalProperties(param)
+> testInlineAdditionalProperties(param)

 test inline additionalProperties

@ -397,8 +395,7 @@ test inline additionalProperties
 FakeApi apiInstance = new FakeApi();
 Object param = null; // Object | request body
 try {
-    Void result = apiInstance.testInlineAdditionalProperties(param);
-    System.out.println(result);
+    apiInstance.testInlineAdditionalProperties(param);
 } catch (ApiException e) {
    System.err.println("Exception when calling FakeApi#testInlineAdditionalProperties");
    e.printStackTrace();
@ -413,7 +410,7 @@ Name | Type | Description  | Notes

 ### Return type

-[**Void**](.md)
+null (empty response body)

 ### Authorization

@ -426,7 +423,7 @@ No authorization required

 <a name="testJsonFormData"></a>
 # **testJsonFormData**
-> Void testJsonFormData(param, param2)
+> testJsonFormData(param, param2)

 test json serialization of form data

@ -443,8 +440,7 @@ FakeApi apiInstance = new FakeApi();
 String param = "param_example"; // String | field1
 String param2 = "param2_example"; // String | field2
 try {
-    Void result = apiInstance.testJsonFormData(param, param2);
-    System.out.println(result);
+    apiInstance.testJsonFormData(param, param2);
 } catch (ApiException e) {
    System.err.println("Exception when calling FakeApi#testJsonFormData");
    e.printStackTrace();
@ -460,7 +456,7 @@ Name | Type | Description  | Notes

 ### Return type

-[**Void**](.md)
+null (empty response body)

 ### Authorization

--- a/samples/client/petstore/java/retrofit2-play25/docs/PetApi.md
+++ b/samples/client/petstore/java/retrofit2-play25/docs/PetApi.md
@ -16,7 +16,7 @@ Method | HTTP request | Description

 <a name="addPet"></a>
 # **addPet**
-> Void addPet(body)
+> addPet(body)

 Add a new pet to the store

@ -40,8 +40,7 @@ petstore_auth.setAccessToken("YOUR ACCESS TOKEN");
 PetApi apiInstance = new PetApi();
 Pet body = new Pet(); // Pet | Pet object that needs to be added to the store
 try {
-    Void result = apiInstance.addPet(body);
-    System.out.println(result);
+    apiInstance.addPet(body);
 } catch (ApiException e) {
    System.err.println("Exception when calling PetApi#addPet");
    e.printStackTrace();
@ -56,7 +55,7 @@ Name | Type | Description  | Notes

 ### Return type

-[**Void**](.md)
+null (empty response body)

 ### Authorization

@ -69,7 +68,7 @@ Name | Type | Description  | Notes

 <a name="deletePet"></a>
 # **deletePet**
-> Void deletePet(petId, apiKey)
+> deletePet(petId, apiKey)

 Deletes a pet

@ -94,8 +93,7 @@ PetApi apiInstance = new PetApi();
 Long petId = 789L; // Long | Pet id to delete
 String apiKey = "apiKey_example"; // String | 
 try {
-    Void result = apiInstance.deletePet(petId, apiKey);
-    System.out.println(result);
+    apiInstance.deletePet(petId, apiKey);
 } catch (ApiException e) {
    System.err.println("Exception when calling PetApi#deletePet");
    e.printStackTrace();
@ -111,7 +109,7 @@ Name | Type | Description  | Notes

 ### Return type

-[**Void**](.md)
+null (empty response body)

 ### Authorization

@ -285,7 +283,7 @@ Name | Type | Description  | Notes

 <a name="updatePet"></a>
 # **updatePet**
-> Void updatePet(body)
+> updatePet(body)

 Update an existing pet

@ -309,8 +307,7 @@ petstore_auth.setAccessToken("YOUR ACCESS TOKEN");
 PetApi apiInstance = new PetApi();
 Pet body = new Pet(); // Pet | Pet object that needs to be added to the store
 try {
-    Void result = apiInstance.updatePet(body);
-    System.out.println(result);
+    apiInstance.updatePet(body);
 } catch (ApiException e) {
    System.err.println("Exception when calling PetApi#updatePet");
    e.printStackTrace();
@ -325,7 +322,7 @@ Name | Type | Description  | Notes

 ### Return type

-[**Void**](.md)
+null (empty response body)

 ### Authorization

@ -338,7 +335,7 @@ Name | Type | Description  | Notes

 <a name="updatePetWithForm"></a>
 # **updatePetWithForm**
-> Void updatePetWithForm(petId, name, status)
+> updatePetWithForm(petId, name, status)

 Updates a pet in the store with form data

@ -364,8 +361,7 @@ Long petId = 789L; // Long | ID of pet that needs to be updated
 String name = "name_example"; // String | Updated name of the pet
 String status = "status_example"; // String | Updated status of the pet
 try {
-    Void result = apiInstance.updatePetWithForm(petId, name, status);
-    System.out.println(result);
+    apiInstance.updatePetWithForm(petId, name, status);
 } catch (ApiException e) {
    System.err.println("Exception when calling PetApi#updatePetWithForm");
    e.printStackTrace();
@ -382,7 +378,7 @@ Name | Type | Description  | Notes

 ### Return type

-[**Void**](.md)
+null (empty response body)

 ### Authorization

--- a/samples/client/petstore/java/retrofit2-play25/docs/StoreApi.md
+++ b/samples/client/petstore/java/retrofit2-play25/docs/StoreApi.md
@ -12,7 +12,7 @@ Method | HTTP request | Description

 <a name="deleteOrder"></a>
 # **deleteOrder**
-> Void deleteOrder(orderId)
+> deleteOrder(orderId)

 Delete purchase order by ID

@ -28,8 +28,7 @@ For valid response try integer IDs with value &lt; 1000. Anything above 1000 or
 StoreApi apiInstance = new StoreApi();
 String orderId = "orderId_example"; // String | ID of the order that needs to be deleted
 try {
-    Void result = apiInstance.deleteOrder(orderId);
-    System.out.println(result);
+    apiInstance.deleteOrder(orderId);
 } catch (ApiException e) {
    System.err.println("Exception when calling StoreApi#deleteOrder");
    e.printStackTrace();
@ -44,7 +43,7 @@ Name | Type | Description  | Notes

 ### Return type

-[**Void**](.md)
+null (empty response body)

 ### Authorization

--- a/samples/client/petstore/java/retrofit2-play25/docs/UserApi.md
+++ b/samples/client/petstore/java/retrofit2-play25/docs/UserApi.md
@ -16,7 +16,7 @@ Method | HTTP request | Description

 <a name="createUser"></a>
 # **createUser**
-> Void createUser(body)
+> createUser(body)

 Create user

@ -32,8 +32,7 @@ This can only be done by the logged in user.
 UserApi apiInstance = new UserApi();
 User body = new User(); // User | Created user object
 try {
-    Void result = apiInstance.createUser(body);
-    System.out.println(result);
+    apiInstance.createUser(body);
 } catch (ApiException e) {
    System.err.println("Exception when calling UserApi#createUser");
    e.printStackTrace();
@ -48,7 +47,7 @@ Name | Type | Description  | Notes

 ### Return type

-[**Void**](.md)
+null (empty response body)

 ### Authorization

@ -61,7 +60,7 @@ No authorization required

 <a name="createUsersWithArrayInput"></a>
 # **createUsersWithArrayInput**
-> Void createUsersWithArrayInput(body)
+> createUsersWithArrayInput(body)

 Creates list of users with given input array

@ -77,8 +76,7 @@ Creates list of users with given input array
 UserApi apiInstance = new UserApi();
 List<User> body = Arrays.asList(new User()); // List<User> | List of user object
 try {
-    Void result = apiInstance.createUsersWithArrayInput(body);
-    System.out.println(result);
+    apiInstance.createUsersWithArrayInput(body);
 } catch (ApiException e) {
    System.err.println("Exception when calling UserApi#createUsersWithArrayInput");
    e.printStackTrace();
@ -93,7 +91,7 @@ Name | Type | Description  | Notes

 ### Return type

-[**Void**](.md)
+null (empty response body)

 ### Authorization

@ -106,7 +104,7 @@ No authorization required

 <a name="createUsersWithListInput"></a>
 # **createUsersWithListInput**
-> Void createUsersWithListInput(body)
+> createUsersWithListInput(body)

 Creates list of users with given input array

@ -122,8 +120,7 @@ Creates list of users with given input array
 UserApi apiInstance = new UserApi();
 List<User> body = Arrays.asList(new User()); // List<User> | List of user object
 try {
-    Void result = apiInstance.createUsersWithListInput(body);
-    System.out.println(result);
+    apiInstance.createUsersWithListInput(body);
 } catch (ApiException e) {
    System.err.println("Exception when calling UserApi#createUsersWithListInput");
    e.printStackTrace();
@ -138,7 +135,7 @@ Name | Type | Description  | Notes

 ### Return type

-[**Void**](.md)
+null (empty response body)

 ### Authorization

@ -151,7 +148,7 @@ No authorization required

 <a name="deleteUser"></a>
 # **deleteUser**
-> Void deleteUser(username)
+> deleteUser(username)

 Delete user

@ -167,8 +164,7 @@ This can only be done by the logged in user.
 UserApi apiInstance = new UserApi();
 String username = "username_example"; // String | The name that needs to be deleted
 try {
-    Void result = apiInstance.deleteUser(username);
-    System.out.println(result);
+    apiInstance.deleteUser(username);
 } catch (ApiException e) {
    System.err.println("Exception when calling UserApi#deleteUser");
    e.printStackTrace();
@ -183,7 +179,7 @@ Name | Type | Description  | Notes

 ### Return type

-[**Void**](.md)
+null (empty response body)

 ### Authorization

@ -210,7 +206,7 @@ Get user by user name


 UserApi apiInstance = new UserApi();
-String username = "username_example"; // String | The name that needs to be fetched. Use user1 for testing. 
+String username = "username_example"; // String | The name that needs to be fetched. Use user1 for testing.
 try {
    User result = apiInstance.getUserByName(username);
    System.out.println(result);
@ -224,7 +220,7 @@ try {

 Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
- **username** | **String**| The name that needs to be fetched. Use user1 for testing.  |
+ **username** | **String**| The name that needs to be fetched. Use user1 for testing. |

 ### Return type

@ -288,7 +284,7 @@ No authorization required

 <a name="logoutUser"></a>
 # **logoutUser**
-> Void logoutUser()
+> logoutUser()

 Logs out current logged in user session

@ -303,8 +299,7 @@ Logs out current logged in user session

 UserApi apiInstance = new UserApi();
 try {
-    Void result = apiInstance.logoutUser();
-    System.out.println(result);
+    apiInstance.logoutUser();
 } catch (ApiException e) {
    System.err.println("Exception when calling UserApi#logoutUser");
    e.printStackTrace();
@ -316,7 +311,7 @@ This endpoint does not need any parameter.

 ### Return type

-[**Void**](.md)
+null (empty response body)

 ### Authorization

@ -329,7 +324,7 @@ No authorization required

 <a name="updateUser"></a>
 # **updateUser**
-> Void updateUser(username, body)
+> updateUser(username, body)

 Updated user

@ -346,8 +341,7 @@ UserApi apiInstance = new UserApi();
 String username = "username_example"; // String | name that need to be deleted
 User body = new User(); // User | Updated user object
 try {
-    Void result = apiInstance.updateUser(username, body);
-    System.out.println(result);
+    apiInstance.updateUser(username, body);
 } catch (ApiException e) {
    System.err.println("Exception when calling UserApi#updateUser");
    e.printStackTrace();
@ -363,7 +357,7 @@ Name | Type | Description  | Notes

 ### Return type

-[**Void**](.md)
+null (empty response body)

 ### Authorization

--- a/samples/client/petstore/java/retrofit2-play25/pom.xml
+++ b/samples/client/petstore/java/retrofit2-play25/pom.xml
@ -208,7 +208,6 @@
            <artifactId>converter-scalars</artifactId>
            <version>${retrofit-version}</version>
        </dependency>
-
        <dependency>
            <groupId>org.apache.oltu.oauth2</groupId>
            <artifactId>org.apache.oltu.oauth2.client</artifactId>
--- a/samples/client/petstore/java/retrofit2-play25/src/main/gen/io/swagger/client/BuildConfig.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/gen/io/swagger/client/BuildConfig.java
@ -1,8 +0,0 @@
-/*___Generated_by_IDEA___*/
-
-package io.swagger.client;
-
-/* This stub is only used by the IDE. It is NOT the BuildConfig class actually packed into the APK */
-public final class BuildConfig {
-  public final static boolean DEBUG = Boolean.parseBoolean(null);
-}
--- a/samples/client/petstore/java/retrofit2-play25/src/main/gen/io/swagger/client/Manifest.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/gen/io/swagger/client/Manifest.java
@ -1,7 +0,0 @@
-/*___Generated_by_IDEA___*/
-
-package io.swagger.client;
-
-/* This stub is only used by the IDE. It is NOT the Manifest class actually packed into the APK */
-public final class Manifest {
-}
--- a/samples/client/petstore/java/retrofit2-play25/src/main/gen/io/swagger/client/R.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/gen/io/swagger/client/R.java
@ -1,7 +0,0 @@
-/*___Generated_by_IDEA___*/
-
-package io.swagger.client;
-
-/* This stub is only used by the IDE. It is NOT the R class actually packed into the APK */
-public final class R {
-}
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/api/PetApi.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/api/PetApi.java
@ -120,7 +120,7 @@ public interface PetApi {
  @retrofit2.http.Multipart
  @POST("pet/{petId}/uploadImage")
  CompletionStage<Response<ModelApiResponse>> uploadFile(
-    @retrofit2.http.Path("petId") Long petId, @retrofit2.http.Part("additionalMetadata") String additionalMetadata, @retrofit2.http.Part okhttp3.MultipartBody.Part file
+    @retrofit2.http.Path("petId") Long petId, @retrofit2.http.Part("additionalMetadata") String additionalMetadata, @retrofit2.http.Part MultipartBody.Part file
  );

 }
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/api/UserApi.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/api/UserApi.java
@ -67,7 +67,7 @@ public interface UserApi {
  /**
   * Get user by user name
   * 
-   * @param username The name that needs to be fetched. Use user1 for testing.  (required)
+   * @param username The name that needs to be fetched. Use user1 for testing. (required)
   * @return Call&lt;User&gt;
   */
  @GET("user/{username}")
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/AdditionalPropertiesClass.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/AdditionalPropertiesClass.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/Animal.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/Animal.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonSubTypes;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/AnimalFarm.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/AnimalFarm.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import io.swagger.client.model.Animal;
 import java.util.ArrayList;
 import java.util.List;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/ArrayOfArrayOfNumberOnly.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/ArrayOfNumberOnly.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/ArrayOfNumberOnly.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/ArrayTest.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/ArrayTest.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/Capitalization.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/Capitalization.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/Cat.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/Cat.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/Category.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/Category.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/ClassModel.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/ClassModel.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/Client.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/Client.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/Dog.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/Dog.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/EnumArrays.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/EnumArrays.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/EnumClass.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/EnumClass.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import javax.validation.constraints.*;
 import javax.validation.Valid;

--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/EnumTest.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/EnumTest.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/FormatTest.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/FormatTest.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@ -339,8 +340,8 @@ public class FormatTest {
        Objects.equals(this._float, formatTest._float) &&
        Objects.equals(this._double, formatTest._double) &&
        Objects.equals(this.string, formatTest.string) &&
-        Objects.equals(this._byte, formatTest._byte) &&
-        Objects.equals(this.binary, formatTest.binary) &&
+        Arrays.equals(this._byte, formatTest._byte) &&
+        Arrays.equals(this.binary, formatTest.binary) &&
        Objects.equals(this.date, formatTest.date) &&
        Objects.equals(this.dateTime, formatTest.dateTime) &&
        Objects.equals(this.uuid, formatTest.uuid) &&
@ -349,7 +350,7 @@ public class FormatTest {

  @Override
  public int hashCode() {
-    return Objects.hash(integer, int32, int64, number, _float, _double, string, _byte, binary, date, dateTime, uuid, password);
+    return Objects.hash(integer, int32, int64, number, _float, _double, string, Arrays.hashCode(_byte), Arrays.hashCode(binary), date, dateTime, uuid, password);
  }


--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/HasOnlyReadOnly.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/HasOnlyReadOnly.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/MapTest.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/MapTest.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/Model200Response.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/Model200Response.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/ModelApiResponse.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/ModelApiResponse.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/ModelReturn.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/ModelReturn.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/Name.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/Name.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/NumberOnly.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/NumberOnly.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/Order.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/Order.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/OuterComposite.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/OuterComposite.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/OuterEnum.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/OuterEnum.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import javax.validation.constraints.*;
 import javax.validation.Valid;

--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/Pet.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/Pet.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/ReadOnlyFirst.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/ReadOnlyFirst.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/SpecialModelName.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/SpecialModelName.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/Tag.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/Tag.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/User.java
+++ b/samples/client/petstore/java/retrofit2-play25/src/main/java/io/swagger/client/model/User.java
@ -14,6 +14,7 @@
 package io.swagger.client.model;

 import java.util.Objects;
+import java.util.Arrays;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
--- a/samples/client/petstore/java/retrofit2/docs/UserApi.md
+++ b/samples/client/petstore/java/retrofit2/docs/UserApi.md
@ -206,7 +206,7 @@ Get user by user name


 UserApi apiInstance = new UserApi();
-String username = "username_example"; // String | The name that needs to be fetched. Use user1 for testing. 
+String username = "username_example"; // String | The name that needs to be fetched. Use user1 for testing.
 try {
    User result = apiInstance.getUserByName(username);
    System.out.println(result);
@ -220,7 +220,7 @@ try {

 Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
- **username** | **String**| The name that needs to be fetched. Use user1 for testing.  |
+ **username** | **String**| The name that needs to be fetched. Use user1 for testing. |

 ### Return type

--- a/samples/client/petstore/java/retrofit2/src/main/java/io/swagger/client/api/AnotherFakeApi.java
+++ b/samples/client/petstore/java/retrofit2/src/main/java/io/swagger/client/api/AnotherFakeApi.java
@ -7,6 +7,7 @@ import retrofit2.http.*;

 import okhttp3.RequestBody;
 import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;

 import io.swagger.client.model.Client;

--- a/samples/client/petstore/java/retrofit2/src/main/java/io/swagger/client/api/FakeApi.java
+++ b/samples/client/petstore/java/retrofit2/src/main/java/io/swagger/client/api/FakeApi.java
@ -7,6 +7,7 @@ import retrofit2.http.*;

 import okhttp3.RequestBody;
 import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;

 import java.math.BigDecimal;
 import io.swagger.client.model.Client;
--- a/samples/client/petstore/java/retrofit2/src/main/java/io/swagger/client/api/FakeClassnameTags123Api.java
+++ b/samples/client/petstore/java/retrofit2/src/main/java/io/swagger/client/api/FakeClassnameTags123Api.java
@ -7,6 +7,7 @@ import retrofit2.http.*;

 import okhttp3.RequestBody;
 import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;

 import io.swagger.client.model.Client;

--- a/samples/client/petstore/java/retrofit2/src/main/java/io/swagger/client/api/PetApi.java
+++ b/samples/client/petstore/java/retrofit2/src/main/java/io/swagger/client/api/PetApi.java
@ -7,6 +7,7 @@ import retrofit2.http.*;

 import okhttp3.RequestBody;
 import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;

 import java.io.File;
 import io.swagger.client.model.ModelApiResponse;
@ -118,7 +119,7 @@ public interface PetApi {
  @retrofit2.http.Multipart
  @POST("pet/{petId}/uploadImage")
  Call<ModelApiResponse> uploadFile(
-    @retrofit2.http.Path("petId") Long petId, @retrofit2.http.Part("additionalMetadata") String additionalMetadata, @retrofit2.http.Part("file\"; filename=\"file") RequestBody file
+    @retrofit2.http.Path("petId") Long petId, @retrofit2.http.Part("additionalMetadata") String additionalMetadata, @retrofit2.http.Part MultipartBody.Part file
  );

 }
--- a/samples/client/petstore/java/retrofit2/src/main/java/io/swagger/client/api/StoreApi.java
+++ b/samples/client/petstore/java/retrofit2/src/main/java/io/swagger/client/api/StoreApi.java
@ -7,6 +7,7 @@ import retrofit2.http.*;

 import okhttp3.RequestBody;
 import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;

 import io.swagger.client.model.Order;

--- a/samples/client/petstore/java/retrofit2/src/main/java/io/swagger/client/api/UserApi.java
+++ b/samples/client/petstore/java/retrofit2/src/main/java/io/swagger/client/api/UserApi.java
@ -7,6 +7,7 @@ import retrofit2.http.*;

 import okhttp3.RequestBody;
 import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;

 import io.swagger.client.model.User;

@ -63,7 +64,7 @@ public interface UserApi {
  /**
   * Get user by user name
   * 
-   * @param username The name that needs to be fetched. Use user1 for testing.  (required)
+   * @param username The name that needs to be fetched. Use user1 for testing. (required)
   * @return Call&lt;User&gt;
   */
  @GET("user/{username}")
--- a/samples/client/petstore/java/retrofit2/src/test/java/io/swagger/client/api/PetApiTest.java
+++ b/samples/client/petstore/java/retrofit2/src/test/java/io/swagger/client/api/PetApiTest.java
@ -19,6 +19,7 @@ import retrofit2.Response;

 import okhttp3.MediaType;
 import okhttp3.RequestBody;
+import okhttp3.MultipartBody;

 import static org.junit.Assert.*;

@ -139,9 +140,9 @@ public class PetApiTest {
        File file = new File("hello.txt");
        BufferedWriter writer = new BufferedWriter(new FileWriter(file));
        writer.write("Hello world!");
-        writer.close();
-
-        api.uploadFile(pet.getId(), null, RequestBody.create(MediaType.parse("text/plain"), file)).execute();
+        writer.close();        
+        final RequestBody body = RequestBody.create(MediaType.parse("text/plain"), file);
+        api.uploadFile(pet.getId(), null, MultipartBody.Part.createFormData("datafile", file.getName(), body)).execute();
    }

    @Test
--- a/samples/client/petstore/java/retrofit2rx/docs/UserApi.md
+++ b/samples/client/petstore/java/retrofit2rx/docs/UserApi.md
@ -206,7 +206,7 @@ Get user by user name


 UserApi apiInstance = new UserApi();
-String username = "username_example"; // String | The name that needs to be fetched. Use user1 for testing. 
+String username = "username_example"; // String | The name that needs to be fetched. Use user1 for testing.
 try {
    User result = apiInstance.getUserByName(username);
    System.out.println(result);
@ -220,7 +220,7 @@ try {

 Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
- **username** | **String**| The name that needs to be fetched. Use user1 for testing.  |
+ **username** | **String**| The name that needs to be fetched. Use user1 for testing. |

 ### Return type

--- a/samples/client/petstore/java/retrofit2rx/src/main/java/io/swagger/client/api/AnotherFakeApi.java
+++ b/samples/client/petstore/java/retrofit2rx/src/main/java/io/swagger/client/api/AnotherFakeApi.java
@ -7,6 +7,7 @@ import retrofit2.http.*;

 import okhttp3.RequestBody;
 import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;

 import io.swagger.client.model.Client;

--- a/samples/client/petstore/java/retrofit2rx/src/main/java/io/swagger/client/api/FakeApi.java
+++ b/samples/client/petstore/java/retrofit2rx/src/main/java/io/swagger/client/api/FakeApi.java
@ -7,6 +7,7 @@ import retrofit2.http.*;

 import okhttp3.RequestBody;
 import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;

 import java.math.BigDecimal;
 import io.swagger.client.model.Client;
--- a/samples/client/petstore/java/retrofit2rx/src/main/java/io/swagger/client/api/FakeClassnameTags123Api.java
+++ b/samples/client/petstore/java/retrofit2rx/src/main/java/io/swagger/client/api/FakeClassnameTags123Api.java
@ -7,6 +7,7 @@ import retrofit2.http.*;

 import okhttp3.RequestBody;
 import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;

 import io.swagger.client.model.Client;

--- a/samples/client/petstore/java/retrofit2rx/src/main/java/io/swagger/client/api/PetApi.java
+++ b/samples/client/petstore/java/retrofit2rx/src/main/java/io/swagger/client/api/PetApi.java
@ -7,6 +7,7 @@ import retrofit2.http.*;

 import okhttp3.RequestBody;
 import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;

 import java.io.File;
 import io.swagger.client.model.ModelApiResponse;
@ -118,7 +119,7 @@ public interface PetApi {
  @retrofit2.http.Multipart
  @POST("pet/{petId}/uploadImage")
  Observable<ModelApiResponse> uploadFile(
-    @retrofit2.http.Path("petId") Long petId, @retrofit2.http.Part("additionalMetadata") String additionalMetadata, @retrofit2.http.Part("file\"; filename=\"file") RequestBody file
+    @retrofit2.http.Path("petId") Long petId, @retrofit2.http.Part("additionalMetadata") String additionalMetadata, @retrofit2.http.Part MultipartBody.Part file
  );

 }
--- a/samples/client/petstore/java/retrofit2rx/src/main/java/io/swagger/client/api/StoreApi.java
+++ b/samples/client/petstore/java/retrofit2rx/src/main/java/io/swagger/client/api/StoreApi.java
@ -7,6 +7,7 @@ import retrofit2.http.*;

 import okhttp3.RequestBody;
 import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;

 import io.swagger.client.model.Order;

--- a/samples/client/petstore/java/retrofit2rx/src/main/java/io/swagger/client/api/UserApi.java
+++ b/samples/client/petstore/java/retrofit2rx/src/main/java/io/swagger/client/api/UserApi.java
@ -7,6 +7,7 @@ import retrofit2.http.*;

 import okhttp3.RequestBody;
 import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;

 import io.swagger.client.model.User;

@ -63,7 +64,7 @@ public interface UserApi {
  /**
   * Get user by user name
   * 
-   * @param username The name that needs to be fetched. Use user1 for testing.  (required)
+   * @param username The name that needs to be fetched. Use user1 for testing. (required)
   * @return Observable&lt;User&gt;
   */
  @GET("user/{username}")
--- a/samples/client/petstore/java/retrofit2rx/src/test/java/io/swagger/client/api/PetApiTest.java
+++ b/samples/client/petstore/java/retrofit2rx/src/test/java/io/swagger/client/api/PetApiTest.java
@ -14,6 +14,7 @@ import java.util.List;
 import org.junit.*;

 import okhttp3.MediaType;
+import okhttp3.MultipartBody;
 import okhttp3.RequestBody;

 import static org.junit.Assert.*;
@ -200,8 +201,8 @@ public class PetApiTest {
        Pet pet = createRandomPet();
        api.addPet(pet).subscribe(SkeletonSubscriber.failTestOnError());

-        RequestBody body = RequestBody.create(MediaType.parse("text/plain"), file);
-        api.uploadFile(pet.getId(), "a test file", body).subscribe(new SkeletonSubscriber<ModelApiResponse>() {
+        final RequestBody body = RequestBody.create(MediaType.parse("text/plain"), file);
+        api.uploadFile(pet.getId(), "a test file", MultipartBody.Part.createFormData("datafile", file.getName(), body)).subscribe(new SkeletonSubscriber<ModelApiResponse>() {
            @Override
            public void onError(Throwable e) {
                // this also yields a 400 for other tests, so I guess it's okay...
--- a/samples/client/petstore/java/retrofit2rx2/docs/UserApi.md
+++ b/samples/client/petstore/java/retrofit2rx2/docs/UserApi.md
@ -206,7 +206,7 @@ Get user by user name


 UserApi apiInstance = new UserApi();
-String username = "username_example"; // String | The name that needs to be fetched. Use user1 for testing. 
+String username = "username_example"; // String | The name that needs to be fetched. Use user1 for testing.
 try {
    User result = apiInstance.getUserByName(username);
    System.out.println(result);
@ -220,7 +220,7 @@ try {

 Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
- **username** | **String**| The name that needs to be fetched. Use user1 for testing.  |
+ **username** | **String**| The name that needs to be fetched. Use user1 for testing. |

 ### Return type

--- a/samples/client/petstore/java/retrofit2rx2/src/main/java/io/swagger/client/api/AnotherFakeApi.java
+++ b/samples/client/petstore/java/retrofit2rx2/src/main/java/io/swagger/client/api/AnotherFakeApi.java
@ -8,6 +8,7 @@ import retrofit2.http.*;

 import okhttp3.RequestBody;
 import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;

 import io.swagger.client.model.Client;

--- a/samples/client/petstore/java/retrofit2rx2/src/main/java/io/swagger/client/api/FakeApi.java
+++ b/samples/client/petstore/java/retrofit2rx2/src/main/java/io/swagger/client/api/FakeApi.java
@ -8,6 +8,7 @@ import retrofit2.http.*;

 import okhttp3.RequestBody;
 import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;

 import java.math.BigDecimal;
 import io.swagger.client.model.Client;
--- a/samples/client/petstore/java/retrofit2rx2/src/main/java/io/swagger/client/api/FakeClassnameTags123Api.java
+++ b/samples/client/petstore/java/retrofit2rx2/src/main/java/io/swagger/client/api/FakeClassnameTags123Api.java
@ -8,6 +8,7 @@ import retrofit2.http.*;

 import okhttp3.RequestBody;
 import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;

 import io.swagger.client.model.Client;

--- a/samples/client/petstore/java/retrofit2rx2/src/main/java/io/swagger/client/api/PetApi.java
+++ b/samples/client/petstore/java/retrofit2rx2/src/main/java/io/swagger/client/api/PetApi.java
@ -8,6 +8,7 @@ import retrofit2.http.*;

 import okhttp3.RequestBody;
 import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;

 import java.io.File;
 import io.swagger.client.model.ModelApiResponse;
@ -119,7 +120,7 @@ public interface PetApi {
  @retrofit2.http.Multipart
  @POST("pet/{petId}/uploadImage")
  Observable<ModelApiResponse> uploadFile(
-    @retrofit2.http.Path("petId") Long petId, @retrofit2.http.Part("additionalMetadata") String additionalMetadata, @retrofit2.http.Part("file\"; filename=\"file") RequestBody file
+    @retrofit2.http.Path("petId") Long petId, @retrofit2.http.Part("additionalMetadata") String additionalMetadata, @retrofit2.http.Part MultipartBody.Part file
  );

 }
--- a/samples/client/petstore/java/retrofit2rx2/src/main/java/io/swagger/client/api/StoreApi.java
+++ b/samples/client/petstore/java/retrofit2rx2/src/main/java/io/swagger/client/api/StoreApi.java
@ -8,6 +8,7 @@ import retrofit2.http.*;

 import okhttp3.RequestBody;
 import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;

 import io.swagger.client.model.Order;

--- a/samples/client/petstore/java/retrofit2rx2/src/main/java/io/swagger/client/api/UserApi.java
+++ b/samples/client/petstore/java/retrofit2rx2/src/main/java/io/swagger/client/api/UserApi.java
@ -8,6 +8,7 @@ import retrofit2.http.*;

 import okhttp3.RequestBody;
 import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;

 import io.swagger.client.model.User;

@ -64,7 +65,7 @@ public interface UserApi {
  /**
   * Get user by user name
   * 
-   * @param username The name that needs to be fetched. Use user1 for testing.  (required)
+   * @param username The name that needs to be fetched. Use user1 for testing. (required)
   * @return Observable&lt;User&gt;
   */
  @GET("user/{username}")