Java jersey OAuth2 add support for public client #13827 (#13828)

samples/client/petstore/java/jersey2-java8-localdatetime/src/main/java/org/openapitools/client/ApiClient.java

@@ -446,6 +446,22 @@ public class ApiClient extends JavaTimeFormatter {
     throw new RuntimeException("No OAuth2 authentication configured!");
   }
 
+  /**
+   * Helper method to set the credentials of a public client for the first OAuth2 authentication.
+   *
+   * @param clientId the client ID
+   * @return a {@link org.openapitools.client.ApiClient} object.
+   */
+  public ApiClient setOauthCredentialsForPublicClient(String clientId) {
+    for (Authentication auth : authentications.values()) {
+      if (auth instanceof OAuth) {
+        ((OAuth) auth).setCredentialsForPublicClient(clientId, isDebugging());
+        return this;
+      }
+    }
+    throw new RuntimeException("No OAuth2 authentication configured!");
+  }
+
   /**
    * Helper method to set the password flow for the first OAuth2 authentication.
    *

samples/client/petstore/java/jersey2-java8-localdatetime/src/main/java/org/openapitools/client/auth/OAuth.java

@@ -169,6 +169,19 @@ public class OAuth implements Authentication {
         return this;
     }
 
+    public OAuth setCredentialsForPublicClient(String clientId, Boolean debug) {
+        if (Boolean.TRUE.equals(debug)) {
+            service = new ServiceBuilder(clientId)
+                .apiSecretIsEmptyStringUnsafe().debug()
+                .build(authApi);
+        } else {
+            service = new ServiceBuilder(clientId)
+                .apiSecretIsEmptyStringUnsafe()
+                .build(authApi);
+        }
+        return this;
+    }
+
     public OAuth usePasswordFlow(String username, String password) {
         this.flow = OAuthFlow.PASSWORD;
         this.username = username;