import org.springframework.boot.autoconfigure.web.DefaultErrorAttributes; //导入依赖的package包/类
/**
 * Customized ErrorAttribute bean.
 * We really need to find a cleaner way of handling these error messages.
 *
 * @return customized ErrorAttributes
 */
@Bean
public ErrorAttributes errorAttributes() {
	return new DefaultErrorAttributes() {

		@Override
		public Map<String, Object> getErrorAttributes(
				final RequestAttributes requestAttributes,
				final boolean includeStackTrace) {
			Map<String, Object> attributes = super
					.getErrorAttributes(requestAttributes, includeStackTrace);
			Throwable error = getError(requestAttributes);

			if (error instanceof MethodArgumentNotValidException) {
				MethodArgumentNotValidException ex =
						((MethodArgumentNotValidException) error);
				attributes.put("errors", ex.getMessage());
			}

			return attributes;
		}
	};
}
 

import org.springframework.boot.autoconfigure.web.DefaultErrorAttributes; //导入依赖的package包/类
@Test
public void filterHasError() {
	this.filter.setErrorAttributes(new DefaultErrorAttributes());
	MockHttpServletRequest request = new MockHttpServletRequest("GET", "/foo");
	MockHttpServletResponse response = new MockHttpServletResponse();
	response.setStatus(500);
	request.setAttribute("javax.servlet.error.exception",
			new IllegalStateException("Foo"));
	response.addHeader("Content-Type", "application/json");
	Map<String, Object> trace = this.filter.getTrace(request);
	this.filter.enhanceTrace(trace, response);
	@SuppressWarnings("unchecked")
	Map<String, Object> map = (Map<String, Object>) trace.get("error");
	System.err.println(map);
	assertThat(map.get("message").toString()).isEqualTo("Foo");
}
 

import org.springframework.boot.autoconfigure.web.DefaultErrorAttributes; //导入依赖的package包/类
@Test
public void filterHasError() {
	this.filter.setErrorAttributes(new DefaultErrorAttributes());
	MockHttpServletRequest request = new MockHttpServletRequest("GET", "/foo");
	MockHttpServletResponse response = new MockHttpServletResponse();
	response.setStatus(500);
	request.setAttribute("javax.servlet.error.exception",
			new IllegalStateException("Foo"));
	response.addHeader("Content-Type", "application/json");
	Map<String, Object> trace = this.filter.getTrace(request);
	this.filter.enhanceTrace(trace, response);
	@SuppressWarnings("unchecked")
	Map<String, Object> map = (Map<String, Object>) trace.get("error");
	System.err.println(map);
	assertEquals("Foo", map.get("message").toString());
}
 

import org.springframework.boot.autoconfigure.web.DefaultErrorAttributes; //导入依赖的package包/类
@Bean
public ErrorAttributes customizeErrorResponseAttributes() {
    
	return new DefaultErrorAttributes(){
    	@Override
        public Map<String, Object> getErrorAttributes(RequestAttributes requestAttributes, boolean includeStackTrace) {
            Map<String, Object> errorAttributes = super.getErrorAttributes(requestAttributes, includeStackTrace);
            errorAttributes.remove("timestamp");
            errorAttributes.remove("exception");
            return errorAttributes;
        }
    };
    
}
 

import org.springframework.boot.autoconfigure.web.DefaultErrorAttributes; //导入依赖的package包/类
@Autowired
public ErrorController(ServerProperties serverProperties) {
    super(new DefaultErrorAttributes(), serverProperties.getError());
}
 

import org.springframework.boot.autoconfigure.web.DefaultErrorAttributes; //导入依赖的package包/类
@Bean
@ConditionalOnMissingBean
public DefaultErrorAttributes errorAttributes() {
	return new DefaultErrorAttributes();
}