[Java][Native] Fix multipart builder files array (#16055) (#16094)

* [Java] Fixed bug in native client generation when API accepts array of files (#16055) * Adding test for java native client * Updated samples
2025-12-05 18:06:08 +00:00 · 2023-07-24 09:57:21 +02:00
parent 0a02860b50
commit 584f8448ee
20 changed files with 1028 additions and 1 deletions
--- a/samples/client/echo_api/java/apache-httpclient/README.md
+++ b/samples/client/echo_api/java/apache-httpclient/README.md
@@ -107,6 +107,7 @@ Class | Method | HTTP request | Description
 ------------ | ------------- | ------------- | -------------
 *BodyApi* | [**testBinaryGif**](docs/BodyApi.md#testBinaryGif) | **POST** /binary/gif | Test binary (gif) response body
 *BodyApi* | [**testBodyApplicationOctetstreamBinary**](docs/BodyApi.md#testBodyApplicationOctetstreamBinary) | **POST** /body/application/octetstream/binary | Test body parameter(s)
+*BodyApi* | [**testBodyMultipartFormdataArrayOfBinary**](docs/BodyApi.md#testBodyMultipartFormdataArrayOfBinary) | **POST** /body/application/octetstream/array_of_binary | Test array of binary in multipart mime
 *BodyApi* | [**testEchoBodyFreeFormObjectResponseString**](docs/BodyApi.md#testEchoBodyFreeFormObjectResponseString) | **POST** /echo/body/FreeFormObject/response_string | Test free form object
 *BodyApi* | [**testEchoBodyPet**](docs/BodyApi.md#testEchoBodyPet) | **POST** /echo/body/Pet | Test body parameter(s)
 *BodyApi* | [**testEchoBodyPetResponseString**](docs/BodyApi.md#testEchoBodyPetResponseString) | **POST** /echo/body/Pet/response_string | Test empty response body
--- a/samples/client/echo_api/java/apache-httpclient/api/openapi.yaml
+++ b/samples/client/echo_api/java/apache-httpclient/api/openapi.yaml
@@ -427,6 +427,27 @@ paths:
      tags:
      - body
      x-accepts: image/gif
+  /body/application/octetstream/array_of_binary:
+    post:
+      description: Test array of binary in multipart mime
+      operationId: test/body/multipart/formdata/array_of_binary
+      requestBody:
+        content:
+          multipart/form-data:
+            schema:
+              $ref: '#/components/schemas/test_body_multipart_formdata_array_of_binary_request'
+      responses:
+        "200":
+          content:
+            text/plain:
+              schema:
+                type: string
+          description: Successful operation
+      summary: Test array of binary in multipart mime
+      tags:
+      - body
+      x-content-type: multipart/form-data
+      x-accepts: text/plain
 components:
  requestBodies:
    Pet:
@@ -657,4 +678,14 @@ components:
      allOf:
      - $ref: '#/components/schemas/Bird'
      - $ref: '#/components/schemas/Category'
+    test_body_multipart_formdata_array_of_binary_request:
+      properties:
+        files:
+          items:
+            format: binary
+            type: string
+          type: array
+      required:
+      - files
+      type: object

--- a/samples/client/echo_api/java/apache-httpclient/docs/BodyApi.md
+++ b/samples/client/echo_api/java/apache-httpclient/docs/BodyApi.md
@@ -6,6 +6,7 @@ All URIs are relative to *http://localhost:3000*
 |------------- | ------------- | -------------|
 | [**testBinaryGif**](BodyApi.md#testBinaryGif) | **POST** /binary/gif | Test binary (gif) response body |
 | [**testBodyApplicationOctetstreamBinary**](BodyApi.md#testBodyApplicationOctetstreamBinary) | **POST** /body/application/octetstream/binary | Test body parameter(s) |
+| [**testBodyMultipartFormdataArrayOfBinary**](BodyApi.md#testBodyMultipartFormdataArrayOfBinary) | **POST** /body/application/octetstream/array_of_binary | Test array of binary in multipart mime |
 | [**testEchoBodyFreeFormObjectResponseString**](BodyApi.md#testEchoBodyFreeFormObjectResponseString) | **POST** /echo/body/FreeFormObject/response_string | Test free form object |
 | [**testEchoBodyPet**](BodyApi.md#testEchoBodyPet) | **POST** /echo/body/Pet | Test body parameter(s) |
 | [**testEchoBodyPetResponseString**](BodyApi.md#testEchoBodyPetResponseString) | **POST** /echo/body/Pet/response_string | Test empty response body |
@@ -141,6 +142,72 @@ No authorization required
 | **200** | Successful operation |  -  |


+## testBodyMultipartFormdataArrayOfBinary
+
+> String testBodyMultipartFormdataArrayOfBinary(files)
+
+Test array of binary in multipart mime
+
+Test array of binary in multipart mime
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.BodyApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://localhost:3000");
+
+        BodyApi apiInstance = new BodyApi(defaultClient);
+        List<File> files = Arrays.asList(); // List<File> | 
+        try {
+            String result = apiInstance.testBodyMultipartFormdataArrayOfBinary(files);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling BodyApi#testBodyMultipartFormdataArrayOfBinary");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **files** | **List&lt;File&gt;**|  | |
+
+### Return type
+
+**String**
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: multipart/form-data
+- **Accept**: text/plain
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Successful operation |  -  |
+
+
 ## testEchoBodyFreeFormObjectResponseString

 > String testEchoBodyFreeFormObjectResponseString(body)
--- a/samples/client/echo_api/java/apache-httpclient/src/main/java/org/openapitools/client/api/BodyApi.java
+++ b/samples/client/echo_api/java/apache-httpclient/src/main/java/org/openapitools/client/api/BodyApi.java
@@ -189,6 +189,82 @@ public class BodyApi {
    );
  }

+  /**
+   * Test array of binary in multipart mime
+   * Test array of binary in multipart mime
+   * @param files  (required)
+   * @return String
+   * @throws ApiException if fails to make API call
+   */
+  public String testBodyMultipartFormdataArrayOfBinary(List<File> files) throws ApiException {
+    return this.testBodyMultipartFormdataArrayOfBinary(files, Collections.emptyMap());
+  }
+
+
+  /**
+   * Test array of binary in multipart mime
+   * Test array of binary in multipart mime
+   * @param files  (required)
+   * @param additionalHeaders additionalHeaders for this call
+   * @return String
+   * @throws ApiException if fails to make API call
+   */
+  public String testBodyMultipartFormdataArrayOfBinary(List<File> files, Map<String, String> additionalHeaders) throws ApiException {
+    Object localVarPostBody = null;
+    
+    // verify the required parameter 'files' is set
+    if (files == null) {
+      throw new ApiException(400, "Missing the required parameter 'files' when calling testBodyMultipartFormdataArrayOfBinary");
+    }
+    
+    // create path and map variables
+    String localVarPath = "/body/application/octetstream/array_of_binary";
+
+    StringJoiner localVarQueryStringJoiner = new StringJoiner("&");
+    String localVarQueryParameterBaseName;
+    List<Pair> localVarQueryParams = new ArrayList<Pair>();
+    List<Pair> localVarCollectionQueryParams = new ArrayList<Pair>();
+    Map<String, String> localVarHeaderParams = new HashMap<String, String>();
+    Map<String, String> localVarCookieParams = new HashMap<String, String>();
+    Map<String, Object> localVarFormParams = new HashMap<String, Object>();
+
+    
+    localVarHeaderParams.putAll(additionalHeaders);
+
+    
+    if (files != null)
+      localVarFormParams.put("files", files);
+
+    final String[] localVarAccepts = {
+      "text/plain"
+    };
+    final String localVarAccept = apiClient.selectHeaderAccept(localVarAccepts);
+
+    final String[] localVarContentTypes = {
+      "multipart/form-data"
+    };
+    final String localVarContentType = apiClient.selectHeaderContentType(localVarContentTypes);
+
+    String[] localVarAuthNames = new String[] {  };
+
+    TypeReference<String> localVarReturnType = new TypeReference<String>() {};
+    return apiClient.invokeAPI(
+        localVarPath,
+        "POST",
+        localVarQueryParams,
+        localVarCollectionQueryParams,
+        localVarQueryStringJoiner.toString(),
+        localVarPostBody,
+        localVarHeaderParams,
+        localVarCookieParams,
+        localVarFormParams,
+        localVarAccept,
+        localVarContentType,
+        localVarAuthNames,
+        localVarReturnType
+    );
+  }
+
  /**
   * Test free form object
   * Test free form object
--- a/samples/client/echo_api/java/feign-gson/api/openapi.yaml
+++ b/samples/client/echo_api/java/feign-gson/api/openapi.yaml
@@ -427,6 +427,27 @@ paths:
      tags:
      - body
      x-accepts: image/gif
+  /body/application/octetstream/array_of_binary:
+    post:
+      description: Test array of binary in multipart mime
+      operationId: test/body/multipart/formdata/array_of_binary
+      requestBody:
+        content:
+          multipart/form-data:
+            schema:
+              $ref: '#/components/schemas/test_body_multipart_formdata_array_of_binary_request'
+      responses:
+        "200":
+          content:
+            text/plain:
+              schema:
+                type: string
+          description: Successful operation
+      summary: Test array of binary in multipart mime
+      tags:
+      - body
+      x-content-type: multipart/form-data
+      x-accepts: text/plain
 components:
  requestBodies:
    Pet:
@@ -657,4 +678,14 @@ components:
      allOf:
      - $ref: '#/components/schemas/Bird'
      - $ref: '#/components/schemas/Category'
+    test_body_multipart_formdata_array_of_binary_request:
+      properties:
+        files:
+          items:
+            format: binary
+            type: string
+          type: array
+      required:
+      - files
+      type: object

--- a/samples/client/echo_api/java/feign-gson/src/main/java/org/openapitools/client/api/BodyApi.java
+++ b/samples/client/echo_api/java/feign-gson/src/main/java/org/openapitools/client/api/BodyApi.java
@@ -72,6 +72,35 @@ public interface BodyApi extends ApiClient.Api {



+  /**
+   * Test array of binary in multipart mime
+   * Test array of binary in multipart mime
+   * @param files  (required)
+   * @return String
+   */
+  @RequestLine("POST /body/application/octetstream/array_of_binary")
+  @Headers({
+    "Content-Type: multipart/form-data",
+    "Accept: text/plain",
+  })
+  String testBodyMultipartFormdataArrayOfBinary(@Param("files") List<File> files);
+
+  /**
+   * Test array of binary in multipart mime
+   * Similar to <code>testBodyMultipartFormdataArrayOfBinary</code> but it also returns the http response headers .
+   * Test array of binary in multipart mime
+   * @param files  (required)
+   * @return A ApiResponse that wraps the response boyd and the http headers.
+   */
+  @RequestLine("POST /body/application/octetstream/array_of_binary")
+  @Headers({
+    "Content-Type: multipart/form-data",
+    "Accept: text/plain",
+  })
+  ApiResponse<String> testBodyMultipartFormdataArrayOfBinaryWithHttpInfo(@Param("files") List<File> files);
+
+
+
  /**
   * Test free form object
   * Test free form object
--- a/samples/client/echo_api/java/native/README.md
+++ b/samples/client/echo_api/java/native/README.md
@@ -108,6 +108,8 @@ Class | Method | HTTP request | Description
 *BodyApi* | [**testBinaryGifWithHttpInfo**](docs/BodyApi.md#testBinaryGifWithHttpInfo) | **POST** /binary/gif | Test binary (gif) response body
 *BodyApi* | [**testBodyApplicationOctetstreamBinary**](docs/BodyApi.md#testBodyApplicationOctetstreamBinary) | **POST** /body/application/octetstream/binary | Test body parameter(s)
 *BodyApi* | [**testBodyApplicationOctetstreamBinaryWithHttpInfo**](docs/BodyApi.md#testBodyApplicationOctetstreamBinaryWithHttpInfo) | **POST** /body/application/octetstream/binary | Test body parameter(s)
+*BodyApi* | [**testBodyMultipartFormdataArrayOfBinary**](docs/BodyApi.md#testBodyMultipartFormdataArrayOfBinary) | **POST** /body/application/octetstream/array_of_binary | Test array of binary in multipart mime
+*BodyApi* | [**testBodyMultipartFormdataArrayOfBinaryWithHttpInfo**](docs/BodyApi.md#testBodyMultipartFormdataArrayOfBinaryWithHttpInfo) | **POST** /body/application/octetstream/array_of_binary | Test array of binary in multipart mime
 *BodyApi* | [**testEchoBodyFreeFormObjectResponseString**](docs/BodyApi.md#testEchoBodyFreeFormObjectResponseString) | **POST** /echo/body/FreeFormObject/response_string | Test free form object
 *BodyApi* | [**testEchoBodyFreeFormObjectResponseStringWithHttpInfo**](docs/BodyApi.md#testEchoBodyFreeFormObjectResponseStringWithHttpInfo) | **POST** /echo/body/FreeFormObject/response_string | Test free form object
 *BodyApi* | [**testEchoBodyPet**](docs/BodyApi.md#testEchoBodyPet) | **POST** /echo/body/Pet | Test body parameter(s)
--- a/samples/client/echo_api/java/native/api/openapi.yaml
+++ b/samples/client/echo_api/java/native/api/openapi.yaml
@@ -427,6 +427,27 @@ paths:
      tags:
      - body
      x-accepts: image/gif
+  /body/application/octetstream/array_of_binary:
+    post:
+      description: Test array of binary in multipart mime
+      operationId: test/body/multipart/formdata/array_of_binary
+      requestBody:
+        content:
+          multipart/form-data:
+            schema:
+              $ref: '#/components/schemas/test_body_multipart_formdata_array_of_binary_request'
+      responses:
+        "200":
+          content:
+            text/plain:
+              schema:
+                type: string
+          description: Successful operation
+      summary: Test array of binary in multipart mime
+      tags:
+      - body
+      x-content-type: multipart/form-data
+      x-accepts: text/plain
 components:
  requestBodies:
    Pet:
@@ -657,4 +678,14 @@ components:
      allOf:
      - $ref: '#/components/schemas/Bird'
      - $ref: '#/components/schemas/Category'
+    test_body_multipart_formdata_array_of_binary_request:
+      properties:
+        files:
+          items:
+            format: binary
+            type: string
+          type: array
+      required:
+      - files
+      type: object

--- a/samples/client/echo_api/java/native/docs/BodyApi.md
+++ b/samples/client/echo_api/java/native/docs/BodyApi.md
@@ -8,6 +8,8 @@ All URIs are relative to *http://localhost:3000*
 | [**testBinaryGifWithHttpInfo**](BodyApi.md#testBinaryGifWithHttpInfo) | **POST** /binary/gif | Test binary (gif) response body |
 | [**testBodyApplicationOctetstreamBinary**](BodyApi.md#testBodyApplicationOctetstreamBinary) | **POST** /body/application/octetstream/binary | Test body parameter(s) |
 | [**testBodyApplicationOctetstreamBinaryWithHttpInfo**](BodyApi.md#testBodyApplicationOctetstreamBinaryWithHttpInfo) | **POST** /body/application/octetstream/binary | Test body parameter(s) |
+| [**testBodyMultipartFormdataArrayOfBinary**](BodyApi.md#testBodyMultipartFormdataArrayOfBinary) | **POST** /body/application/octetstream/array_of_binary | Test array of binary in multipart mime |
+| [**testBodyMultipartFormdataArrayOfBinaryWithHttpInfo**](BodyApi.md#testBodyMultipartFormdataArrayOfBinaryWithHttpInfo) | **POST** /body/application/octetstream/array_of_binary | Test array of binary in multipart mime |
 | [**testEchoBodyFreeFormObjectResponseString**](BodyApi.md#testEchoBodyFreeFormObjectResponseString) | **POST** /echo/body/FreeFormObject/response_string | Test free form object |
 | [**testEchoBodyFreeFormObjectResponseStringWithHttpInfo**](BodyApi.md#testEchoBodyFreeFormObjectResponseStringWithHttpInfo) | **POST** /echo/body/FreeFormObject/response_string | Test free form object |
 | [**testEchoBodyPet**](BodyApi.md#testEchoBodyPet) | **POST** /echo/body/Pet | Test body parameter(s) |
@@ -279,6 +281,140 @@ No authorization required
 | **200** | Successful operation |  -  |


+## testBodyMultipartFormdataArrayOfBinary
+
+> String testBodyMultipartFormdataArrayOfBinary(files)
+
+Test array of binary in multipart mime
+
+Test array of binary in multipart mime
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.BodyApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://localhost:3000");
+
+        BodyApi apiInstance = new BodyApi(defaultClient);
+        List<File> files = Arrays.asList(); // List<File> | 
+        try {
+            String result = apiInstance.testBodyMultipartFormdataArrayOfBinary(files);
+            System.out.println(result);
+        } catch (ApiException e) {
+            System.err.println("Exception when calling BodyApi#testBodyMultipartFormdataArrayOfBinary");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Reason: " + e.getResponseBody());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **files** | **List&lt;File&gt;**|  | |
+
+### Return type
+
+**String**
+
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: multipart/form-data
+- **Accept**: text/plain
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Successful operation |  -  |
+
+## testBodyMultipartFormdataArrayOfBinaryWithHttpInfo
+
+> ApiResponse<String> testBodyMultipartFormdataArrayOfBinary testBodyMultipartFormdataArrayOfBinaryWithHttpInfo(files)
+
+Test array of binary in multipart mime
+
+Test array of binary in multipart mime
+
+### Example
+
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.ApiResponse;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.BodyApi;
+
+public class Example {
+    public static void main(String[] args) {
+        ApiClient defaultClient = Configuration.getDefaultApiClient();
+        defaultClient.setBasePath("http://localhost:3000");
+
+        BodyApi apiInstance = new BodyApi(defaultClient);
+        List<File> files = Arrays.asList(); // List<File> | 
+        try {
+            ApiResponse<String> response = apiInstance.testBodyMultipartFormdataArrayOfBinaryWithHttpInfo(files);
+            System.out.println("Status code: " + response.getStatusCode());
+            System.out.println("Response headers: " + response.getHeaders());
+            System.out.println("Response body: " + response.getData());
+        } catch (ApiException e) {
+            System.err.println("Exception when calling BodyApi#testBodyMultipartFormdataArrayOfBinary");
+            System.err.println("Status code: " + e.getCode());
+            System.err.println("Response headers: " + e.getResponseHeaders());
+            System.err.println("Reason: " + e.getResponseBody());
+            e.printStackTrace();
+        }
+    }
+}
+```
+
+### Parameters
+
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **files** | **List&lt;File&gt;**|  | |
+
+### Return type
+
+ApiResponse<**String**>
+
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: multipart/form-data
+- **Accept**: text/plain
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Successful operation |  -  |
+
+
 ## testEchoBodyFreeFormObjectResponseString

 > String testEchoBodyFreeFormObjectResponseString(body)
--- a/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/api/BodyApi.java
+++ b/samples/client/echo_api/java/native/src/main/java/org/openapitools/client/api/BodyApi.java
@@ -24,6 +24,12 @@ import org.openapitools.client.model.Tag;
 import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.ObjectMapper;

+import org.apache.http.HttpEntity;
+import org.apache.http.NameValuePair;
+import org.apache.http.entity.mime.MultipartEntityBuilder;
+import org.apache.http.message.BasicNameValuePair;
+import org.apache.http.client.entity.UrlEncodedFormEntity;
+
 import java.io.InputStream;
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
@@ -229,6 +235,120 @@ public class BodyApi {
    }
    return localVarRequestBuilder;
  }
+  /**
+   * Test array of binary in multipart mime
+   * Test array of binary in multipart mime
+   * @param files  (required)
+   * @return String
+   * @throws ApiException if fails to make API call
+   */
+  public String testBodyMultipartFormdataArrayOfBinary(List<File> files) throws ApiException {
+    ApiResponse<String> localVarResponse = testBodyMultipartFormdataArrayOfBinaryWithHttpInfo(files);
+    return localVarResponse.getData();
+  }
+
+  /**
+   * Test array of binary in multipart mime
+   * Test array of binary in multipart mime
+   * @param files  (required)
+   * @return ApiResponse&lt;String&gt;
+   * @throws ApiException if fails to make API call
+   */
+  public ApiResponse<String> testBodyMultipartFormdataArrayOfBinaryWithHttpInfo(List<File> files) throws ApiException {
+    HttpRequest.Builder localVarRequestBuilder = testBodyMultipartFormdataArrayOfBinaryRequestBuilder(files);
+    try {
+      HttpResponse<InputStream> localVarResponse = memberVarHttpClient.send(
+          localVarRequestBuilder.build(),
+          HttpResponse.BodyHandlers.ofInputStream());
+      if (memberVarResponseInterceptor != null) {
+        memberVarResponseInterceptor.accept(localVarResponse);
+      }
+      try {
+        if (localVarResponse.statusCode()/ 100 != 2) {
+          throw getApiException("testBodyMultipartFormdataArrayOfBinary", localVarResponse);
+        }
+        // for plain text response
+        if (localVarResponse.headers().map().containsKey("Content-Type") &&
+                "text/plain".equalsIgnoreCase(localVarResponse.headers().map().get("Content-Type").get(0).split(";")[0].trim())) {
+          java.util.Scanner s = new java.util.Scanner(localVarResponse.body()).useDelimiter("\\A");
+          String responseBodyText = s.hasNext() ? s.next() : "";
+          return new ApiResponse<String>(
+                  localVarResponse.statusCode(),
+                  localVarResponse.headers().map(),
+                  responseBodyText
+          );
+        } else {
+            throw new RuntimeException("Error! The response Content-Type is supposed to be `text/plain` but it's not: " + localVarResponse);
+        }
+      } finally {
+      }
+    } catch (IOException e) {
+      throw new ApiException(e);
+    }
+    catch (InterruptedException e) {
+      Thread.currentThread().interrupt();
+      throw new ApiException(e);
+    }
+  }
+
+  private HttpRequest.Builder testBodyMultipartFormdataArrayOfBinaryRequestBuilder(List<File> files) throws ApiException {
+    // verify the required parameter 'files' is set
+    if (files == null) {
+      throw new ApiException(400, "Missing the required parameter 'files' when calling testBodyMultipartFormdataArrayOfBinary");
+    }
+
+    HttpRequest.Builder localVarRequestBuilder = HttpRequest.newBuilder();
+
+    String localVarPath = "/body/application/octetstream/array_of_binary";
+
+    localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
+
+    localVarRequestBuilder.header("Accept", "text/plain");
+
+    MultipartEntityBuilder multiPartBuilder = MultipartEntityBuilder.create();
+    boolean hasFiles = false;
+    for (int i=0; i < files.size(); i++) {
+        multiPartBuilder.addBinaryBody("files", files.get(i));
+        hasFiles = true;
+    }
+    HttpEntity entity = multiPartBuilder.build();
+    HttpRequest.BodyPublisher formDataPublisher;
+    if (hasFiles) {
+        Pipe pipe;
+        try {
+            pipe = Pipe.open();
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        new Thread(() -> {
+            try (OutputStream outputStream = Channels.newOutputStream(pipe.sink())) {
+                entity.writeTo(outputStream);
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }).start();
+        formDataPublisher = HttpRequest.BodyPublishers.ofInputStream(() -> Channels.newInputStream(pipe.source()));
+    } else {
+        ByteArrayOutputStream formOutputStream = new ByteArrayOutputStream();
+        try {
+            entity.writeTo(formOutputStream);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        formDataPublisher = HttpRequest.BodyPublishers
+            .ofInputStream(() -> new ByteArrayInputStream(formOutputStream.toByteArray()));
+    }
+    localVarRequestBuilder
+        .header("Content-Type", entity.getContentType().getValue())
+        .method("POST", formDataPublisher);
+    if (memberVarReadTimeout != null) {
+      localVarRequestBuilder.timeout(memberVarReadTimeout);
+    }
+    if (memberVarInterceptor != null) {
+      memberVarInterceptor.accept(localVarRequestBuilder);
+    }
+    return localVarRequestBuilder;
+  }
  /**
   * Test free form object
   * Test free form object
--- a/samples/client/echo_api/java/native/src/test/java/org/openapitools/client/CustomTest.java
+++ b/samples/client/echo_api/java/native/src/test/java/org/openapitools/client/CustomTest.java
@@ -21,7 +21,11 @@ import org.openapitools.client.model.*;
 import org.junit.Test;
 import org.junit.Ignore;

+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileWriter;
 import java.io.IOException;
+import java.nio.file.Files;
 import java.util.*;

 /**
@@ -279,4 +283,33 @@ public class CustomTest {
        Assert.assertEquals("/form/integer/boolean/string", p.path);
        Assert.assertEquals("3b\ninteger_form=1337&boolean_form=true&string_form=Hello+World\n0\n\n", p.body);
    }
+
+    @Test
+    public void testBodyMultipartFormdataArrayOfBinary() throws ApiException {
+        File file1 = Objects.requireNonNull(getFile("Hello"));
+        File file2 = Objects.requireNonNull(getFile("World"));
+
+        String response = bodyApi.testBodyMultipartFormdataArrayOfBinary(List.of(file1, file2));
+        org.openapitools.client.EchoServerResponseParser p = new org.openapitools.client.EchoServerResponseParser(response);
+
+        Assert.assertEquals("/body/application/octetstream/array_of_binary", p.path);
+
+        Assert.assertTrue(p.body.contains(file1.getName()));
+        Assert.assertTrue(p.body.contains("Hello"));
+        Assert.assertTrue(p.body.contains(file2.getName()));
+        Assert.assertTrue(p.body.contains("World"));
+    }
+
+    private File getFile(String content) {
+        try {
+            File tempFile = Files.createTempFile("tempFile", ".txt").toFile();
+            BufferedWriter writer = new BufferedWriter(new FileWriter(tempFile));
+            writer.write(content);
+            writer.close();
+
+            return tempFile;
+        } catch (IOException e) {
+            return null;
+        }
+    }
 }
--- a/samples/client/echo_api/java/okhttp-gson/README.md
+++ b/samples/client/echo_api/java/okhttp-gson/README.md
@@ -114,6 +114,7 @@ Class | Method | HTTP request | Description
 ------------ | ------------- | ------------- | -------------
 *BodyApi* | [**testBinaryGif**](docs/BodyApi.md#testBinaryGif) | **POST** /binary/gif | Test binary (gif) response body
 *BodyApi* | [**testBodyApplicationOctetstreamBinary**](docs/BodyApi.md#testBodyApplicationOctetstreamBinary) | **POST** /body/application/octetstream/binary | Test body parameter(s)
+*BodyApi* | [**testBodyMultipartFormdataArrayOfBinary**](docs/BodyApi.md#testBodyMultipartFormdataArrayOfBinary) | **POST** /body/application/octetstream/array_of_binary | Test array of binary in multipart mime
 *BodyApi* | [**testEchoBodyFreeFormObjectResponseString**](docs/BodyApi.md#testEchoBodyFreeFormObjectResponseString) | **POST** /echo/body/FreeFormObject/response_string | Test free form object
 *BodyApi* | [**testEchoBodyPet**](docs/BodyApi.md#testEchoBodyPet) | **POST** /echo/body/Pet | Test body parameter(s)
 *BodyApi* | [**testEchoBodyPetResponseString**](docs/BodyApi.md#testEchoBodyPetResponseString) | **POST** /echo/body/Pet/response_string | Test empty response body
--- a/samples/client/echo_api/java/okhttp-gson/api/openapi.yaml
+++ b/samples/client/echo_api/java/okhttp-gson/api/openapi.yaml
@@ -427,6 +427,27 @@ paths:
      tags:
      - body
      x-accepts: image/gif
+  /body/application/octetstream/array_of_binary:
+    post:
+      description: Test array of binary in multipart mime
+      operationId: test/body/multipart/formdata/array_of_binary
+      requestBody:
+        content:
+          multipart/form-data:
+            schema:
+              $ref: '#/components/schemas/test_body_multipart_formdata_array_of_binary_request'
+      responses:
+        "200":
+          content:
+            text/plain:
+              schema:
+                type: string
+          description: Successful operation
+      summary: Test array of binary in multipart mime
+      tags:
+      - body
+      x-content-type: multipart/form-data
+      x-accepts: text/plain
 components:
  requestBodies:
    Pet:
@@ -657,4 +678,14 @@ components:
      allOf:
      - $ref: '#/components/schemas/Bird'
      - $ref: '#/components/schemas/Category'
+    test_body_multipart_formdata_array_of_binary_request:
+      properties:
+        files:
+          items:
+            format: binary
+            type: string
+          type: array
+      required:
+      - files
+      type: object

--- a/samples/client/echo_api/java/okhttp-gson/docs/BodyApi.md
+++ b/samples/client/echo_api/java/okhttp-gson/docs/BodyApi.md
@@ -6,6 +6,7 @@ All URIs are relative to *http://localhost:3000*
 |------------- | ------------- | -------------|
 | [**testBinaryGif**](BodyApi.md#testBinaryGif) | **POST** /binary/gif | Test binary (gif) response body |
 | [**testBodyApplicationOctetstreamBinary**](BodyApi.md#testBodyApplicationOctetstreamBinary) | **POST** /body/application/octetstream/binary | Test body parameter(s) |
+| [**testBodyMultipartFormdataArrayOfBinary**](BodyApi.md#testBodyMultipartFormdataArrayOfBinary) | **POST** /body/application/octetstream/array_of_binary | Test array of binary in multipart mime |
 | [**testEchoBodyFreeFormObjectResponseString**](BodyApi.md#testEchoBodyFreeFormObjectResponseString) | **POST** /echo/body/FreeFormObject/response_string | Test free form object |
 | [**testEchoBodyPet**](BodyApi.md#testEchoBodyPet) | **POST** /echo/body/Pet | Test body parameter(s) |
 | [**testEchoBodyPetResponseString**](BodyApi.md#testEchoBodyPetResponseString) | **POST** /echo/body/Pet/response_string | Test empty response body |
@@ -132,6 +133,68 @@ No authorization required
 |-------------|-------------|------------------|
 | **200** | Successful operation |  -  |

+<a id="testBodyMultipartFormdataArrayOfBinary"></a>
+# **testBodyMultipartFormdataArrayOfBinary**
+> String testBodyMultipartFormdataArrayOfBinary(files)
+
+Test array of binary in multipart mime
+
+Test array of binary in multipart mime
+
+### Example
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.BodyApi;
+
+public class Example {
+  public static void main(String[] args) {
+    ApiClient defaultClient = Configuration.getDefaultApiClient();
+    defaultClient.setBasePath("http://localhost:3000");
+
+    BodyApi apiInstance = new BodyApi(defaultClient);
+    List<File> files = Arrays.asList(); // List<File> | 
+    try {
+      String result = apiInstance.testBodyMultipartFormdataArrayOfBinary(files);
+      System.out.println(result);
+    } catch (ApiException e) {
+      System.err.println("Exception when calling BodyApi#testBodyMultipartFormdataArrayOfBinary");
+      System.err.println("Status code: " + e.getCode());
+      System.err.println("Reason: " + e.getResponseBody());
+      System.err.println("Response headers: " + e.getResponseHeaders());
+      e.printStackTrace();
+    }
+  }
+}
+```
+
+### Parameters
+
+| Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **files** | **List&lt;File&gt;**|  | |
+
+### Return type
+
+**String**
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: multipart/form-data
+ - **Accept**: text/plain
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Successful operation |  -  |
+
 <a id="testEchoBodyFreeFormObjectResponseString"></a>
 # **testEchoBodyFreeFormObjectResponseString**
 > String testEchoBodyFreeFormObjectResponseString(body)
--- a/samples/client/echo_api/java/okhttp-gson/src/main/java/org/openapitools/client/api/BodyApi.java
+++ b/samples/client/echo_api/java/okhttp-gson/src/main/java/org/openapitools/client/api/BodyApi.java
@@ -305,6 +305,133 @@ public class BodyApi {
        localVarApiClient.executeAsync(localVarCall, localVarReturnType, _callback);
        return localVarCall;
    }
+    /**
+     * Build call for testBodyMultipartFormdataArrayOfBinary
+     * @param files  (required)
+     * @param _callback Callback for upload/download progress
+     * @return Call to execute
+     * @throws ApiException If fail to serialize the request body object
+     * @http.response.details
+     <table summary="Response Details" border="1">
+        <tr><td> Status Code </td><td> Description </td><td> Response Headers </td></tr>
+        <tr><td> 200 </td><td> Successful operation </td><td>  -  </td></tr>
+     </table>
+     */
+    public okhttp3.Call testBodyMultipartFormdataArrayOfBinaryCall(List<File> files, final ApiCallback _callback) throws ApiException {
+        String basePath = null;
+        // Operation Servers
+        String[] localBasePaths = new String[] {  };
+
+        // Determine Base Path to Use
+        if (localCustomBaseUrl != null){
+            basePath = localCustomBaseUrl;
+        } else if ( localBasePaths.length > 0 ) {
+            basePath = localBasePaths[localHostIndex];
+        } else {
+            basePath = null;
+        }
+
+        Object localVarPostBody = null;
+
+        // create path and map variables
+        String localVarPath = "/body/application/octetstream/array_of_binary";
+
+        List<Pair> localVarQueryParams = new ArrayList<Pair>();
+        List<Pair> localVarCollectionQueryParams = new ArrayList<Pair>();
+        Map<String, String> localVarHeaderParams = new HashMap<String, String>();
+        Map<String, String> localVarCookieParams = new HashMap<String, String>();
+        Map<String, Object> localVarFormParams = new HashMap<String, Object>();
+
+        if (files != null) {
+            localVarFormParams.put("files", files);
+        }
+
+        final String[] localVarAccepts = {
+            "text/plain"
+        };
+        final String localVarAccept = localVarApiClient.selectHeaderAccept(localVarAccepts);
+        if (localVarAccept != null) {
+            localVarHeaderParams.put("Accept", localVarAccept);
+        }
+
+        final String[] localVarContentTypes = {
+            "multipart/form-data"
+        };
+        final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
+        if (localVarContentType != null) {
+            localVarHeaderParams.put("Content-Type", localVarContentType);
+        }
+
+        String[] localVarAuthNames = new String[] {  };
+        return localVarApiClient.buildCall(basePath, localVarPath, "POST", localVarQueryParams, localVarCollectionQueryParams, localVarPostBody, localVarHeaderParams, localVarCookieParams, localVarFormParams, localVarAuthNames, _callback);
+    }
+
+    @SuppressWarnings("rawtypes")
+    private okhttp3.Call testBodyMultipartFormdataArrayOfBinaryValidateBeforeCall(List<File> files, final ApiCallback _callback) throws ApiException {
+        // verify the required parameter 'files' is set
+        if (files == null) {
+            throw new ApiException("Missing the required parameter 'files' when calling testBodyMultipartFormdataArrayOfBinary(Async)");
+        }
+
+        return testBodyMultipartFormdataArrayOfBinaryCall(files, _callback);
+
+    }
+
+    /**
+     * Test array of binary in multipart mime
+     * Test array of binary in multipart mime
+     * @param files  (required)
+     * @return String
+     * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
+     * @http.response.details
+     <table summary="Response Details" border="1">
+        <tr><td> Status Code </td><td> Description </td><td> Response Headers </td></tr>
+        <tr><td> 200 </td><td> Successful operation </td><td>  -  </td></tr>
+     </table>
+     */
+    public String testBodyMultipartFormdataArrayOfBinary(List<File> files) throws ApiException {
+        ApiResponse<String> localVarResp = testBodyMultipartFormdataArrayOfBinaryWithHttpInfo(files);
+        return localVarResp.getData();
+    }
+
+    /**
+     * Test array of binary in multipart mime
+     * Test array of binary in multipart mime
+     * @param files  (required)
+     * @return ApiResponse&lt;String&gt;
+     * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
+     * @http.response.details
+     <table summary="Response Details" border="1">
+        <tr><td> Status Code </td><td> Description </td><td> Response Headers </td></tr>
+        <tr><td> 200 </td><td> Successful operation </td><td>  -  </td></tr>
+     </table>
+     */
+    public ApiResponse<String> testBodyMultipartFormdataArrayOfBinaryWithHttpInfo(List<File> files) throws ApiException {
+        okhttp3.Call localVarCall = testBodyMultipartFormdataArrayOfBinaryValidateBeforeCall(files, null);
+        Type localVarReturnType = new TypeToken<String>(){}.getType();
+        return localVarApiClient.execute(localVarCall, localVarReturnType);
+    }
+
+    /**
+     * Test array of binary in multipart mime (asynchronously)
+     * Test array of binary in multipart mime
+     * @param files  (required)
+     * @param _callback The callback to be executed when the API call finishes
+     * @return The request call
+     * @throws ApiException If fail to process the API call, e.g. serializing the request body object
+     * @http.response.details
+     <table summary="Response Details" border="1">
+        <tr><td> Status Code </td><td> Description </td><td> Response Headers </td></tr>
+        <tr><td> 200 </td><td> Successful operation </td><td>  -  </td></tr>
+     </table>
+     */
+    public okhttp3.Call testBodyMultipartFormdataArrayOfBinaryAsync(List<File> files, final ApiCallback<String> _callback) throws ApiException {
+
+        okhttp3.Call localVarCall = testBodyMultipartFormdataArrayOfBinaryValidateBeforeCall(files, _callback);
+        Type localVarReturnType = new TypeToken<String>(){}.getType();
+        localVarApiClient.executeAsync(localVarCall, localVarReturnType, _callback);
+        return localVarCall;
+    }
    /**
     * Build call for testEchoBodyFreeFormObjectResponseString
     * @param body Free form object (optional)