问题描述
我有一个有效的弹簧靴休息服务。当路径错误时,它不会返回任何内容。根本没有回应。同时它也不会抛出错误。理想情况下,我预计会发现404未找到错误。
I got a working spring boot rest service. When the path is wrong it doesn't return anything. No response At all. At the same time it doesn't throw error either. Ideally I expected a 404 not found error.
我有一个GlobalErrorHandler
I got a GlobalErrorHandler
@ControllerAdvice
public class GlobalErrorHandler extends ResponseEntityExceptionHandler {
}
ResponseEntityExceptionHandler中有这个方法
There is this method in ResponseEntityExceptionHandler
protected ResponseEntity<Object> handleNoHandlerFoundException(NoHandlerFoundException ex, HttpHeaders headers,
HttpStatus status, WebRequest request) {
return handleExceptionInternal(ex, null, headers, status, request);
}
我已标记 error.whitelabel.enabled = false
在我的属性中
我还必须为此服务做些什么才能将404未找到的回复扔回客户
What else must I do for this service to throw a 404 not found response back to clients
我提到了很多线程,并没有看到任何人遇到这个问题。
I referred a lot of threads and don't see this trouble faced by anybody.
这是我的主应用程序类
@EnableAutoConfiguration // Sprint Boot Auto Configuration
@ComponentScan(basePackages = "com.xxxx")
@EnableJpaRepositories("com.xxxxxxxx") // To segregate MongoDB
// and JPA repositories.
// Otherwise not needed.
@EnableSwagger // auto generation of API docs
@SpringBootApplication
@EnableAspectJAutoProxy
@EnableConfigurationProperties
public class Application extends SpringBootServletInitializer {
private static Class<Application> appClass = Application.class;
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(appClass).properties(getProperties());
}
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
@Bean
public FilterRegistrationBean correlationHeaderFilter() {
FilterRegistrationBean filterRegBean = new FilterRegistrationBean();
filterRegBean.setFilter(new CorrelationHeaderFilter());
filterRegBean.setUrlPatterns(Arrays.asList("/*"));
return filterRegBean;
}
@ConfigurationProperties(prefix = "spring.datasource")
@Bean
public DataSource dataSource() {
return DataSourceBuilder.create().build();
}
static Properties getProperties() {
Properties props = new Properties();
props.put("spring.config.location", "classpath:/");
return props;
}
@Bean
public WebMvcConfigurerAdapter webMvcConfigurerAdapter() {
WebMvcConfigurerAdapter webMvcConfigurerAdapter = new WebMvcConfigurerAdapter() {
@Override
public void configureContentNegotiation(ContentNegotiationConfigurer configurer) {
configurer.favorPathExtension(false).favorParameter(true).parameterName("media-type")
.ignoreAcceptHeader(false).useJaf(false).defaultContentType(MediaType.APPLICATION_JSON)
.mediaType("xml", MediaType.APPLICATION_XML).mediaType("json", MediaType.APPLICATION_JSON);
}
};
return webMvcConfigurerAdapter;
}
@Bean
public RequestMappingHandlerMapping defaultAnnotationHandlerMapping() {
RequestMappingHandlerMapping bean = new RequestMappingHandlerMapping();
bean.setUseSuffixPatternMatch(false);
return bean;
}
}
推荐答案
解决方案非常简单:
首先您需要实现能够处理所有错误情况的控制器。此控制器必须具有 @ControllerAdvice
- 需要定义适用于所有的
。 @ExceptionHandler
RequestMappings
First you need to implement the controller that will handle all error cases. This controller must have @ControllerAdvice
-- required to define @ExceptionHandler
that apply to all @RequestMappings
.
@ControllerAdvice
public class ExceptionHandlerController {
@ExceptionHandler(NoHandlerFoundException.class)
@ResponseStatus(value= HttpStatus.NOT_FOUND)
@ResponseBody
public ErrorResponse requestHandlingNoHandlerFound() {
return new ErrorResponse("custom_404", "message for 404 error code");
}
}
提供想要覆盖<$ c中的响应的异常$ C> @ExceptionHandler 。 NoHandlerFoundException
是一个异常,当Spring无法委托请求时(404情况)将生成该异常。你也可以指定 Throwable
来覆盖任何例外。
Provide exception you want to override response in @ExceptionHandler
. NoHandlerFoundException
is an exception that will be generated when Spring will not be able to delegate request (404 case). You also can specify Throwable
to override any exceptions.
第二次你需要告诉Spring在404的情况下抛出异常(无法解析处理程序):
Second you need to tell Spring to throw exception in case of 404 (could not resolve handler):
@SpringBootApplication
@EnableWebMvc
public class Application {
public static void main(String[] args) {
ApplicationContext ctx = SpringApplication.run(Application.class, args);
DispatcherServlet dispatcherServlet = (DispatcherServlet)ctx.getBean("dispatcherServlet");
dispatcherServlet.setThrowExceptionIfNoHandlerFound(true);
}
}
使用未定义的网址时的结果
Result when I use non defined URL
{
"errorCode": "custom_404",
"errorMessage": "message for 404 error code"
}
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