Spring 如何获取请求'；春天WebRequest的URI是什么？

我在SpringRESTWebService中使用

@ControllerAdvice

和

ResponseEntityExceptionHandler

处理REST异常。到目前为止，一切正常，直到我决定将

URI

路径（发生异常）添加到BAD_请求响应中

@ControllerAdvice
public class RestResponseEntityExceptionHandler extends ResponseEntityExceptionHandler {

@Override
protected ResponseEntity<Object> handleHttpMessageNotReadable(HttpMessageNotReadableException ex,
        HttpHeaders headers, HttpStatus status, WebRequest request) {
    logger.info(request.toString());
    return handleExceptionInternal(ex, errorMessage(HttpStatus.BAD_REQUEST, ex, request), headers, HttpStatus.BAD_REQUEST, request);
}

private ApiError errorMessage(HttpStatus httpStatus, Exception ex, WebRequest request) {
    final String message = ex.getMessage() == null ? ex.getClass().getName() : ex.getMessage();
    final String developerMessage = ex.getCause() == null ? ex.toString() : ex.getCause().getMessage();
    return new ApiError(httpStatus.value(), message, developerMessage, System.currentTimeMillis(), request.getDescription(false));
}

但是WebRequest没有提供任何api来获取请求失败的路径。我试过：

request.toString（）

returns->ServletWebRequest:uri=/signup；客户端=0:0:0:0:0:0:0:0:1

request.getDescription（false）

returns->uri=/signup

---

getDescription

与需求非常接近，但不符合要求。有没有办法只获取uri部分？

找到了解决方案。将

WebRequest

转换为

ServletWebRequest

解决了这个问题

((ServletWebRequest)request).getRequest().getRequestURI().toString()

---

返回完整路径-

http://localhost:8080/signup

此问题有多种解决方案

1） 您可以使用从WebRequest获取请求URI和客户端信息 webRequest.getDescription（true）。

true将显示用户的信息，如客户端id，false将只打印URI

2） 在方法定义中直接使用HttpServletRequest作为

@Override
protected ResponseEntity<Object> handleHttpMessageNotReadable(HttpMessageNotReadableException ex,
        HttpHeaders headers, HttpStatus status, WebRequest request, HttpServletRequest httpRequest) {
    logger.info(httpRequest.getRequestURI());
    return handleExceptionInternal(ex, errorMessage(HttpStatus.BAD_REQUEST, ex, request), headers, HttpStatus.BAD_REQUEST, request);
}

@覆盖
受保护响应HandleHttpMessageGenetradable（HttpMessageGenetradableException ex，
HttpHeaders标头、HttpStatus状态、WebRequest请求、HttpServletRequest（httpRequest）{
info（httpRequest.getRequestURI（））；
返回handleExceptionInternal（例如，errorMessage（HttpStatus.BAD_请求，例如，请求），头，HttpStatus.BAD_请求，请求）；
}

ResponseEntityExceptionHandler为@ControllerAdvice类解释了一个方便的基类，这些类希望通过@ExceptionHandler方法跨所有@RequestMapping方法提供集中的异常处理

在Spring Boot 2.1.6中，您可以编写如下内容：

RestExceptionHandler.java

@Order(Ordered.HIGHEST_PRECEDENCE)
@RestControllerAdvice
public class RestExceptionHandler extends ResponseEntityExceptionHandler {
 
private static final Logger logger = LoggerFactory.getLogger(RestExceptionHandler.class);

@ExceptionHandler(ResourceNotFoundException.class)
protected ResponseEntity<Object> handleEntityNotFound(ResourceNotFoundException ex, final HttpServletRequest httpServletRequest) {
    ApiError apiError = new ApiError(HttpStatus.NOT_FOUND);
    apiError.setMessage("Resource not found");
    apiError.setDebugMessage(ex.getMessage());
    apiError.setPath(httpServletRequest.getRequestURI());
    return buildResponseEntity(apiError);
}

private ResponseEntity<Object> buildResponseEntity(ApiError apiError) {
    return new ResponseEntity<>(apiError, apiError.getStatus());
}


 
 @Override
protected ResponseEntity<Object> handleHttpRequestMethodNotSupported(HttpRequestMethodNotSupportedException ex, HttpHeaders headers, HttpStatus status, WebRequest request) {
        ApiError apiError = new ApiError(HttpStatus.METHOD_NOT_ALLOWED);
        apiError.setMessage(ex.getMessage());
        apiError.setPath(((ServletWebRequest)request).getRequest().getRequestURI().toString());
        logger.warn(ex.getMessage());
        return buildResponseEntity(apiError);
}
}

public class ApiError {
// 4xx and 5xx
private HttpStatus status;

@JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'")
private LocalDateTime timestamp;

// holds a user-friendly message about the error.
private String message;

// holds a system message describing the error in more detail.
@JsonInclude(value = Include.NON_EMPTY)
private String debugMessage;

// returns the part of this request's URL
private String path;

@JsonInclude(value = Include.NON_EMPTY)
private List<String> details=new ArrayList<>();

// setters & getters
}

public class ResourceNotFoundException extends RuntimeException {

private static final long serialVersionUID = 1L;

public ResourceNotFoundException() {
    super();
}

public ResourceNotFoundException(String msg) {
    super(msg);
}

---

访问WebRequest对象的属性：

对象obj=webRequest.getAttribute（“org.springframework.web.util.UrlPathHelper.PATH”，0） 字符串uri=String.valueOf（obj）；

webRequest.getAttribute（字符串attributeName，int范围）；
//范围可以是：
//0:请求
//第1次会议
//可以通过调用获取有效的属性名称：
字符串[]attributeNames=webRequest.getAttributeNames（0）//范围是请求

有效的属性名称包括：

org.springframework.web.util.UrlPathHelper.PATH
org.springframework.web.context.request.async.WebAsyncManager.WEB_ASYNC_MANAGER
org.springframework.web.servlet.HandlerMapping.bestMatchingHandler
org.springframework.web.servlet.DispatcherServlet.CONTEXT
org.springframework.web.servlet.resource.ResourceUrlProvider
characterEncodingFilter.FILTERED
org.springframework.boot.web.servlet.error.DefaultErrorAttributes.ERROR
org.springframework.web.servlet.DispatcherServlet.THEME_SOURCE
org.springframework.web.servlet.DispatcherServlet.LOCALE_RESOLVER
formContentFilter.FILTERED
org.springframework.web.servlet.HandlerMapping.bestMatchingPattern
requestContextFilter.FILTERED
org.springframework.web.servlet.DispatcherServlet.OUTPUT_FLASH_MAP
org.springframework.web.servlet.HandlerMapping.pathWithinHandlerMapping
org.springframework.web.servlet.DispatcherServlet.FLASH_MAP_MANAGER
org.springframework.web.servlet.HandlerMapping.uriTemplateVariables
org.springframework.web.servlet.DispatcherServlet.THEME_RESOLVER
org.springframework.core.convert.ConversionService

---

不要使用

getRequestURL（）

，而是使用

getRequestURI（）

获取问题中的URI。

getRequestURI（）

已返回

String

org.springframework.web.util.UrlPathHelper.PATH
org.springframework.web.context.request.async.WebAsyncManager.WEB_ASYNC_MANAGER
org.springframework.web.servlet.HandlerMapping.bestMatchingHandler
org.springframework.web.servlet.DispatcherServlet.CONTEXT
org.springframework.web.servlet.resource.ResourceUrlProvider
characterEncodingFilter.FILTERED
org.springframework.boot.web.servlet.error.DefaultErrorAttributes.ERROR
org.springframework.web.servlet.DispatcherServlet.THEME_SOURCE
org.springframework.web.servlet.DispatcherServlet.LOCALE_RESOLVER
formContentFilter.FILTERED
org.springframework.web.servlet.HandlerMapping.bestMatchingPattern
requestContextFilter.FILTERED
org.springframework.web.servlet.DispatcherServlet.OUTPUT_FLASH_MAP
org.springframework.web.servlet.HandlerMapping.pathWithinHandlerMapping
org.springframework.web.servlet.DispatcherServlet.FLASH_MAP_MANAGER
org.springframework.web.servlet.HandlerMapping.uriTemplateVariables
org.springframework.web.servlet.DispatcherServlet.THEME_RESOLVER
org.springframework.core.convert.ConversionService