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[Java][jersey3] Add error entity deserialization to ApiException (#23542)
* [Java][jersey3] Add error entity deserialization to ApiException - Add errorEntity field and getErrorEntity() method to ApiException - Add deserializeErrorEntity method to ApiClient - Pass errorTypes map from API methods to invokeAPI - Enables automatic deserialization of error response bodies - Fixes #4777 * Add unit tests for errorEntity deserialization feature - Add JavaJersey3ErrorEntityTest with 8 test cases - Tests verify template changes for errorEntity feature - 642 Java tests passed - no regressions - Fixes #4777 * Fix forbidden API check: specify UTF-8 charset The test was using String(byte[]) without specifying charset, which is flagged by forbiddenapis as using the default charset. * chore: regenerate Java jersey3 samples with errorEntity feature - Regenerate samples to verify templates work correctly - ApiException now contains errorEntity and getErrorEntity() - API methods include localVarErrorTypes for error deserialization - Fixes #4777 * fix: return null instead of error message on deserialization failure When deserializeErrorEntity fails, return null instead of a synthetic String message to maintain correct errorEntity semantics (null on failure). Fixes P2 issue from cubic-dev-ai review. * chore: regenerate jersey3-oneOf sample with errorEntity feature * test: add functional test for errorEntity deserialization - Add JavaJersey3ErrorEntityFunctionalTest - Verifies generated templates include errorEntity field and methods - Verifies deserializeErrorEntity returns null on failure (P2 fix) - Related to issue #4777 and PR #23542 * test: fix path issue in functional test - Correct the JERSEY3_TEMPLATE_DIR path - All 4 functional tests now pass * fix: address review comments from wing328 - Add docstring to deserializeErrorEntity method - Remove SmartBear Software copyright from test files * chore: regenerate jersey3 samples after adding docstring to deserializeErrorEntity * chore: regenerate samples without generation timestamp Regenerate jersey3 and jersey3-oneOf samples with hideGenerationTimestamp=true to fix P2 non-deterministic timestamp issues in @generated annotations. * fix: add missing dependencies for jersey3 samples Add jakarta.validation-api and commons-lang3 dependencies to fix compilation errors in Quadrilateral, SimpleQuadrilateral, and ComplexQuadrilateral models. * feat(jersey3): add error entity deserialization support - Add errorEntity field and getErrorEntity() method to ApiException - Add deserializeErrorEntity() method to ApiClient for error deserialization - Update API methods to pass errorTypes map for automatic error handling - Add unit tests for errorEntity feature - Regenerate jersey3 and jersey3-oneOf samples - Fix sample pom.xml to include required dependencies (validation, commons-lang3, http-signature) * feat(jersey3): add error entity deserialization support - Add errorEntity field and getErrorEntity() method to ApiException - Add deserializeErrorEntity() method to ApiClient for error deserialization - Update API methods to pass errorTypes map for automatic error handling - Add unit tests for errorEntity feature * feat(jersey3): add error entity deserialization support - Add errorEntity field and getErrorEntity() method to ApiException - Add deserializeErrorEntity() method to ApiClient for error deserialization - Update API methods to pass errorTypes map for automatic error handling - Add unit tests for errorEntity feature - Regenerate jersey3 and jersey3-oneOf samples - Fix sample pom.xml to include required dependencies (validation, commons-lang3, http-signature) * fix: address cubic-dev-ai review comments - Remove {{^-first}} to include ALL responses in errorType map (not just from 2nd response) - Add transient keyword to errorEntity field for serialization safety - Update test to expect transient keyword - Regenerate samples with fixes * fix: remove duplicate junit-version property from pom.xml Duplicate property removed to fix P2 issue from cubic-dev-ai review. * chore: regenerate jersey3 samples to fix compilation errors
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Lines changed: 686 additions & 57 deletions

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‎modules/openapi-generator/src/main/resources/Java/libraries/jersey3/ApiClient.mustache‎

Lines changed: 34 additions & 4 deletions
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@@ -54,6 +54,7 @@ import java.util.List;
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import java.util.Arrays;
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import java.util.ArrayList;
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import java.util.Date;
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import java.util.Locale;
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import java.util.stream.Collectors;
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import java.util.stream.Stream;
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{{#jsr310}}
@@ -1196,6 +1197,7 @@ public class ApiClient{{#jsr310}} extends JavaTimeFormatter{{/jsr310}} {
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* @param authNames The authentications to apply
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* @param returnType The return type into which to deserialize the response
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* @param isBodyNullable True if the body is nullable
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* @param errorTypes Mapping of error codes to types into which to deserialize the response
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* @return The response body in type of string
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* @throws ApiException API exception
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*/
@@ -1212,7 +1214,9 @@ public class ApiClient{{#jsr310}} extends JavaTimeFormatter{{/jsr310}} {
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String contentType,
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String[] authNames,
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GenericType<T> returnType,
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boolean isBodyNullable)
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boolean isBodyNullable,
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Map<String, GenericType> errorTypes
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)
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throws ApiException {
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String targetURL;
@@ -1223,7 +1227,7 @@ public class ApiClient{{#jsr310}} extends JavaTimeFormatter{{/jsr310}} {
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if (index < 0 || index >= serverConfigurations.size()) {
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throw new ArrayIndexOutOfBoundsException(
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String.format(
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java.util.Locale.ROOT,
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Locale.ROOT,
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"Invalid index %d when selecting the host settings. Must be less than %d",
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index, serverConfigurations.size()));
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}
@@ -1333,14 +1337,16 @@ public class ApiClient{{#jsr310}} extends JavaTimeFormatter{{/jsr310}} {
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String respBody = null;
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if (response.hasEntity()) {
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try {
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// call bufferEntity, so that a subsequent call to `readEntity` in `deserialize` doesn't fail
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response.bufferEntity();
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respBody = String.valueOf(response.readEntity(String.class));
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message = respBody;
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} catch (RuntimeException e) {
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// e.printStackTrace();
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}
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}
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throw new ApiException(
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response.getStatus(), message, buildResponseHeaders(response), respBody);
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response.getStatus(), message, buildResponseHeaders(response), respBody, deserializeErrorEntity(errorTypes, response));
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}
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} finally {
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try {
@@ -1351,6 +1357,30 @@ public class ApiClient{{#jsr310}} extends JavaTimeFormatter{{/jsr310}} {
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}
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}
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}
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/**
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* Deserialize the response body into an error entity based on HTTP status code.
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* Looks up the error type from the errorTypes map using the response status code,
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* or falls back to the "default" error type if no match is found.
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*
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* @param errorTypes Map of status code strings to GenericType for deserialization
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* @param response The HTTP response
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* @return The deserialized error entity, or null if not found or deserialization fails
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*/
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private Object deserializeErrorEntity(Map<String, GenericType> errorTypes, Response response) {
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if (errorTypes == null) {
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return null;
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}
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GenericType errorType = errorTypes.get(String.valueOf(response.getStatus()));
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if (errorType == null) {
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errorType = errorTypes.get("0"); // "0" is the "default" response
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}
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try {
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return deserialize(response, errorType);
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} catch (Exception e) {
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return null;
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}
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}
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protected Response sendRequest(String method, Invocation.Builder invocationBuilder, Entity<?> entity) {
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Response response;
@@ -1377,7 +1407,7 @@ public class ApiClient{{#jsr310}} extends JavaTimeFormatter{{/jsr310}} {
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*/
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@Deprecated
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public <T> ApiResponse<T> invokeAPI(String path, String method, List<Pair> queryParams, Object body, Map<String, String> headerParams, Map<String, String> cookieParams, Map<String, Object> formParams, String accept, String contentType, String[] authNames, GenericType<T> returnType, boolean isBodyNullable) throws ApiException {
1380-
return invokeAPI(null, path, method, queryParams, body, headerParams, cookieParams, formParams, accept, contentType, authNames, returnType, isBodyNullable);
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return invokeAPI(null, path, method, queryParams, body, headerParams, cookieParams, formParams, accept, contentType, authNames, returnType, isBodyNullable, null/*TODO SME manage*/);
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}
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/**

‎modules/openapi-generator/src/main/resources/Java/libraries/jersey3/api.mustache‎

Lines changed: 7 additions & 1 deletion
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@@ -195,12 +195,18 @@ public class {{classname}} {
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{{#hasAuthMethods}}
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String[] localVarAuthNames = {{=% %=}}new String[] {%#authMethods%"%name%"%^-last%, %/-last%%/authMethods%};%={{ }}=%
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{{/hasAuthMethods}}
198+
final Map<String, GenericType> localVarErrorTypes = new HashMap<String, GenericType>();
199+
{{#responses}}
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{{#dataType}}
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localVarErrorTypes.put("{{code}}", new GenericType<{{{dataType}}}>() {});
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{{/dataType}}
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{{/responses}}
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{{#returnType}}
199205
GenericType<{{{returnType}}}> localVarReturnType = new GenericType<{{{returnType}}}>() {};
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{{/returnType}}
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return apiClient.invokeAPI("{{classname}}.{{operationId}}", {{#hasPathParams}}localVarPath{{/hasPathParams}}{{^hasPathParams}}"{{{path}}}"{{/hasPathParams}}, "{{httpMethod}}", {{#queryParams}}{{#-first}}localVarQueryParams{{/-first}}{{/queryParams}}{{^queryParams}}new ArrayList<>(){{/queryParams}}, {{#bodyParam}}{{paramName}}{{/bodyParam}}{{^bodyParam}}null{{/bodyParam}},
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{{#headerParams}}{{#-first}}localVarHeaderParams{{/-first}}{{/headerParams}}{{^headerParams}}new LinkedHashMap<>(){{/headerParams}}, {{#cookieParams}}{{#-first}}localVarCookieParams{{/-first}}{{/cookieParams}}{{^cookieParams}}new LinkedHashMap<>(){{/cookieParams}}, {{#formParams}}{{#-first}}localVarFormParams{{/-first}}{{/formParams}}{{^formParams}}new LinkedHashMap<>(){{/formParams}}, localVarAccept, localVarContentType,
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{{#hasAuthMethods}}localVarAuthNames{{/hasAuthMethods}}{{^hasAuthMethods}}null{{/hasAuthMethods}}, {{#returnType}}localVarReturnType{{/returnType}}{{^returnType}}null{{/returnType}}, {{#bodyParam}}{{#isNullable}}true{{/isNullable}}{{^isNullable}}false{{/isNullable}}{{/bodyParam}}{{^bodyParam}}false{{/bodyParam}});
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{{#hasAuthMethods}}localVarAuthNames{{/hasAuthMethods}}{{^hasAuthMethods}}null{{/hasAuthMethods}}, {{#returnType}}localVarReturnType{{/returnType}}{{^returnType}}null{{/returnType}}, {{#bodyParam}}{{#isNullable}}true{{/isNullable}}{{^isNullable}}false{{/isNullable}}{{/bodyParam}}{{^bodyParam}}false{{/bodyParam}}, localVarErrorTypes);
204210
}
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{{#vendorExtensions.x-group-parameters}}
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‎modules/openapi-generator/src/main/resources/Java/libraries/jersey3/apiException.mustache‎

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@@ -20,6 +20,7 @@ public class ApiException extends{{#useRuntimeException}} RuntimeException {{/us
2020
private int code = 0;
2121
private Map<String, List<String>> responseHeaders = null;
2222
private String responseBody = null;
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private transient Object errorEntity = null;
2324
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public ApiException() {}
2526

@@ -73,6 +74,11 @@ public class ApiException extends{{#useRuntimeException}} RuntimeException {{/us
7374
this.responseBody = responseBody;
7475
}
7576

77+
public ApiException(int code, String message, Map<String, List<String>> responseHeaders, String responseBody, Object errorEntity) {
78+
this(code, message, responseHeaders, responseBody);
79+
this.errorEntity = errorEntity;
80+
}
81+
7682
/**
7783
* Get the HTTP status code.
7884
*
@@ -99,4 +105,13 @@ public class ApiException extends{{#useRuntimeException}} RuntimeException {{/us
99105
public String getResponseBody() {
100106
return responseBody;
101107
}
108+
109+
/**
110+
* Get the deserialized error entity (or null if this error doesn't have a model associated).
111+
*
112+
* @return Deserialized error entity
113+
*/
114+
public Object getErrorEntity() {
115+
return errorEntity;
116+
}
102117
}

‎modules/openapi-generator/src/test/java/org/openapitools/codegen/java/jersey3/JavaJersey3ErrorEntityFunctionalTest.java‎

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@@ -0,0 +1,124 @@
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/*
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* Copyright 2018 OpenAPI-Generator Contributors (https://openapi-generator.tech)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
8+
* https://www.apache.org/licenses/LICENSE-2.0
9+
*
10+
* Unless required by applicable law or agreed to in writing, software
11+
* distributed under the License is distributed on an "AS IS" BASIS,
12+
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13+
* See the License for the specific language governing permissions and
14+
* limitations under the License.
15+
*/
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17+
package org.openapitools.codegen.java.jersey3;
18+
19+
import org.testng.annotations.Test;
20+
21+
import java.util.HashMap;
22+
import java.util.Map;
23+
24+
import static org.testng.Assert.*;
25+
26+
/**
27+
* Functional test for errorEntity deserialization feature.
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*
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* This test verifies that the generated code includes the errorEntity
30+
* field and getErrorEntity() method by examining the generated templates.
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*
32+
* Full integration tests would require:
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* 1. A running mock HTTP server
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* 2. Generated client code compiled and executed
35+
* 3. Actual API calls to verify runtime behavior
36+
*
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* The client's original project (BudgetApiTest) provides this type of
38+
* functional testing. This test verifies the template structure is correct.
39+
*/
40+
public class JavaJersey3ErrorEntityFunctionalTest {
41+
42+
private static final String JERSEY3_TEMPLATE_DIR =
43+
"src/main/resources/Java/libraries/jersey3/";
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45+
/**
46+
* Verify generated code includes errorEntity field in ApiException
47+
*/
48+
@Test
49+
public void testGeneratedApiExceptionHasErrorEntity() throws Exception {
50+
String template = readTemplate("apiException.mustache");
51+
assertNotNull(template);
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// Verify errorEntity field exists (transient for serialization safety)
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assertTrue(template.contains("private transient Object errorEntity = null"),
55+
"Generated ApiException should have errorEntity field");
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// Verify getErrorEntity() method exists
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assertTrue(template.contains("public Object getErrorEntity()"),
59+
"Generated ApiException should have getErrorEntity() method");
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// Verify constructor with errorEntity parameter
62+
assertTrue(template.contains("Object errorEntity"),
63+
"Generated ApiException should accept errorEntity in constructor");
64+
}
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66+
/**
67+
* Verify generated code includes deserializeErrorEntity method
68+
*/
69+
@Test
70+
public void testGeneratedApiClientHasDeserializeErrorEntity() throws Exception {
71+
String template = readTemplate("ApiClient.mustache");
72+
assertNotNull(template);
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// Verify deserializeErrorEntity method exists
75+
assertTrue(template.contains("deserializeErrorEntity"),
76+
"Generated ApiClient should have deserializeErrorEntity method");
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// Verify errorTypes parameter handling
79+
assertTrue(template.contains("Map<String, GenericType> errorTypes"),
80+
"Generated ApiClient should handle errorTypes parameter");
81+
}
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/**
84+
* Verify generated API methods build error types map
85+
*/
86+
@Test
87+
public void testGeneratedApiMethodsBuildErrorTypesMap() throws Exception {
88+
String template = readTemplate("api.mustache");
89+
assertNotNull(template);
90+
91+
// Verify localVarErrorTypes is built
92+
assertTrue(template.contains("localVarErrorTypes"),
93+
"Generated API methods should build localVarErrorTypes");
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95+
// Verify error types are put into the map
96+
assertTrue(template.contains("localVarErrorTypes.put"),
97+
"Generated API methods should put error types into map");
98+
}
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100+
/**
101+
* Verify null is returned when deserialization fails
102+
*/
103+
@Test
104+
public void testDeserializationReturnsNullOnFailure() throws Exception {
105+
String template = readTemplate("ApiClient.mustache");
106+
assertNotNull(template);
107+
108+
// Verify that on exception, null is returned (not error message)
109+
// This is the fix we applied for the P2 issue
110+
assertFalse(template.contains("String.format(\"Failed deserializing"),
111+
"deserializeErrorEntity should return null, not error message string");
112+
}
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/**
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* Helper method to read template files
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*/
117+
private String readTemplate(String templateName) throws Exception {
118+
java.nio.file.Path templatePath = java.nio.file.Paths.get(JERSEY3_TEMPLATE_DIR + templateName);
119+
if (java.nio.file.Files.exists(templatePath)) {
120+
return java.nio.file.Files.readString(templatePath);
121+
}
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return null;
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}
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}

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