春季在使用MethodValidationPostProcessor时返回404。

huangapple
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英文:

Spring returns 404 when using MethodValidationPostProcessor

问题

以下是您提供的内容的翻译：

我在测试Spring Boot应用程序时遇到了问题。它正常运行，但当我通过添加依赖项等启用Spring验证并添加@Configuration时：

  1. @Configuration
  2. public class TestConfiguration {
  4.   @Bean
  5.   public MethodValidationPostProcessor methodValidationPostProcessor() {
  6.     return new MethodValidationPostProcessor();
  7.   }
  8. }

我在测试端点上收到404错误。

  1. {
  2.     "timestamp": 1601507037178,
  3.     "status": 404,
  4.     "error": "Not Found",
  5.     "message": "No message available",
  6.     "path": "/test"
  7. }

我已经尝试了一些类似问题的解决方案/建议（例如这里或这里），但都没有成功。

这是我的代码：
https://github.com/zolv/error-handling-test

API接口：

  1. @Validated
  2. public interface TestApi {
  4.   @PostMapping(
  5.       value = "/test",
  6.       produces = {"application/json"},
  7.       consumes = {"application/json"})
  8.   @ResponseBody
  9.   ResponseEntity<TestEntity> getTest(@Valid @RequestBody(required = false) TestEntity request);
  10. }

TestEntity 只是为了发送一些内容：

  1. @Data
  2. public class TestEntity {
  3.   @JsonProperty("test")
  4.   @NotNull
  5.   private String test;
  6. }

控制器实现：

  1. @RestController
  2. @RequiredArgsConstructor
  3. @Validated
  4. public class TestController implements TestApi {
  5.   @Override
  6.   @ResponseBody
  7.   public ResponseEntity<TestEntity> getTest(@Valid @RequestBody TestEntity request) {
  8.     return ResponseEntity.ok(request);
  9.   }
  10. }

我的控制器建议：

  1. @ControllerAdvice
  2. public class DefaultErrorHandlerAdvice extends ResponseEntityExceptionHandler {
  4.   @ExceptionHandler(value = {ConstraintViolationException.class})
  5.   @ResponseStatus(value = HttpStatus.BAD_REQUEST)
  6.   @ResponseBody
  7.   public ResponseEntity<String> handleValidationFailure(ConstraintViolationException ex) {
  8.     StringBuilder messages = new StringBuilder();
  10.     for (ConstraintViolation<?> violation : ex.getConstraintViolations()) {
  11.       messages.append(violation.getMessage());
  12.     }
  14.     return ResponseEntity.badRequest().body(messages.toString());
  15.   }
  17.   @Override
  18.   @ResponseBody
  19.   @ResponseStatus(HttpStatus.BAD_REQUEST)
  20.   protected ResponseEntity<Object> handleMethodArgumentNotValid(
  21.       MethodArgumentNotValidException ex,
  22.       HttpHeaders headers,
  23.       HttpStatus status,
  24.       WebRequest request) {
  25.     return ResponseEntity.status(HttpStatus.BAD_REQUEST)
  26.         .contentType(MediaType.APPLICATION_PROBLEM_JSON)
  27.         .body("problem");
  28.   }
  29. }

应用程序：

  1. @SpringBootApplication
  2. @EnableWebMvc
  3. @ComponentScan(basePackages = "com.test")
  4. public class TestApplication {
  6.   public static void main(String[] args) {
  7.     SpringApplication.run(TestApplication.class, args);
  8.   }
  9. }

我使用的测试，但在使用Postman时也失败了：

  1. @SpringJUnitConfig
  2. @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
  3. class TestControllerTest {
  5.   @Autowired protected TestRestTemplate restTemplate;
  7.   @Test
  8.   void registrationHappyPath() throws Exception {
  9.     /*
  10.      * Given
  11.      */
  12.     final TestEntity request = new TestEntity();
  14.     /*
  15.      * When/
  16.      */
  17.     final ResponseEntity<String> response =
  18.         restTemplate.postForEntity("/test", request, String.class);
  20.     /*
  21.      * Then
  22.      */
  23.     Assertions.assertEquals(HttpStatus.BAD_REQUEST, response.getStatusCode());
  25.     final String body = response.getBody();
  26.     Assertions.assertNotNull(body);
  27.   }
  28. }

如果我注释掉TestConfiguration，那么一切都正常工作。
非常感谢您提前的任何帮助。

英文:

I have a problem with my test Spring Boot app. It works just fine, but when I enable Spring validation by adding dependency etc and adding a @Configuration:

  1. @Configuration
  2. public class TestConfiguration {
  4.   @Bean
  5.   public MethodValidationPostProcessor methodValidationPostProcessor() {
  6.     return new MethodValidationPostProcessor();
  7.   }
  8. }

I get 404 for my test endpoint.

  1. {
  2.     &quot;timestamp&quot;: 1601507037178,
  3.     &quot;status&quot;: 404,
  4.     &quot;error&quot;: &quot;Not Found&quot;,
  5.     &quot;message&quot;: &quot;No message available&quot;,
  6.     &quot;path&quot;: &quot;/test&quot;
  7. }

I've already applied some solutions/proposals from similar problems (eg here or here) but without a success.

Here is my code:
https://github.com/zolv/error-handling-test

API interface:

  1. @Validated
  2. public interface TestApi {
  4.   @PostMapping(
  5.       value = &quot;/test&quot;,
  6.       produces = {&quot;application/json&quot;},
  7.       consumes = {&quot;application/json&quot;})
  8.   @ResponseBody
  9.   ResponseEntity&lt;TestEntity&gt; getTest(@Valid @RequestBody(required = false) TestEntity request);
  10. }

TestEntity just to send something:

  1. @Data
  2. public class TestEntity {
  3.   @JsonProperty(&quot;test&quot;)
  4.   @NotNull
  5.   private String test;
  6. }

Controller implementation:

  1. @RestController
  2. @RequiredArgsConstructor
  3. @Validated
  4. public class TestController implements TestApi {
  5.   @Override
  6.   @ResponseBody
  7.   public ResponseEntity&lt;TestEntity&gt; getTest(@Valid @RequestBody TestEntity request) {
  8.     return ResponseEntity.ok(request);
  9.   }
  10. }

My controller advice:

  1. @ControllerAdvice
  2. public class DefaultErrorHandlerAdvice extends ResponseEntityExceptionHandler {
  4.   @ExceptionHandler(value = {ConstraintViolationException.class})
  5.   @ResponseStatus(value = HttpStatus.BAD_REQUEST)
  6.   @ResponseBody
  7.   public ResponseEntity&lt;String&gt; handleValidationFailure(ConstraintViolationException ex) {
  8.     StringBuilder messages = new StringBuilder();
  10.     for (ConstraintViolation&lt;?&gt; violation : ex.getConstraintViolations()) {
  11.       messages.append(violation.getMessage());
  12.     }
  14.     return ResponseEntity.badRequest().body(messages.toString());
  15.   }
  17.   @Override
  18.   @ResponseBody
  19.   @ResponseStatus(HttpStatus.BAD_REQUEST)
  20.   protected ResponseEntity&lt;Object&gt; handleMethodArgumentNotValid(
  21.       MethodArgumentNotValidException ex,
  22.       HttpHeaders headers,
  23.       HttpStatus status,
  24.       WebRequest request) {
  25.     return ResponseEntity.status(HttpStatus.BAD_REQUEST)
  26.         .contentType(MediaType.APPLICATION_PROBLEM_JSON)
  27.         .body(&quot;problem&quot;);
  28.   }
  29. }

Application:

  1. @SpringBootApplication
  2. @EnableWebMvc
  3. @ComponentScan(basePackages = &quot;com.test&quot;)
  4. public class TestApplication {
  6.   public static void main(String[] args) {
  7.     SpringApplication.run(TestApplication.class, args);
  8.   }
  9. }

A test I use, but it fails also using Postman:

  1. @SpringJUnitConfig
  2. @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
  3. class TestControllerTest {
  5.   @Autowired protected TestRestTemplate restTemplate;
  7.   @Test
  8.   void registrationHappyPath() throws Exception {
  9.     /*
  10.      * Given
  11.      */
  12.     final TestEntity request = new TestEntity();
  14.     /*
  15.      * When/
  16.      */
  17.     final ResponseEntity&lt;String&gt; response =
  18.         restTemplate.postForEntity(&quot;/test&quot;, request, String.class);
  20.     /*
  21.      * Then
  22.      */
  23.     Assertions.assertEquals(HttpStatus.BAD_REQUEST, response.getStatusCode());
  25.     final String body = response.getBody();
  26.     Assertions.assertNotNull(body);
  27.   }
  28. }

If I comment out a TestConfiguration then everything works fine.
Thank You in advance for any help.

答案1

得分: 4

你应该设置 MethodValidationPostProcessor#setProxyTargetClass(true)，因为默认情况下 MethodValidationPostProcessor 使用 JDK 代理，这会导致在 Spring 上下文中丢失你的控制器。

当调用 AbstractHandlerMethodMapping#processCandidateBean 时，isHandler(Class&lt;?&gt; beanType) 将返回 false，因为 JDK 代理不包含 @RestController 注解。

  1.   public MethodValidationPostProcessor methodValidationPostProcessor() {
  2.     MethodValidationPostProcessor mvProcessor = new MethodValidationPostProcessor();
  3.     mvProcessor.setProxyTargetClass(true);
  4.     return mvProcessor;
  5.   }
英文:

You should set MethodValidationPostProcessor#setProxyTargetClass(true) because by default MethodValidationPostProcessor uses JDK proxy which leads to loss of your controller in the Spring context.

When AbstractHandlerMethodMapping#processCandidateBean is called isHandler(Class&lt;?&gt; beanType) will return false because JDK proxy doesn't contain @RestController annotation.

  1.   public MethodValidationPostProcessor methodValidationPostProcessor() {
  2.     MethodValidationPostProcessor mvProcessor = new MethodValidationPostProcessor();
  3.     mvProcessor.setProxyTargetClass(true);
  4.     return mvProcessor;
  5.   }

huangapple
  • 本文由 发表于 2020年10月1日 07:20:07
  • 转载请务必保留本文链接：https://go.coder-hub.com/64147036.html
  • http-status-code-404
  • java
  • spring-boot
  • validation
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