我正在用spring boot开发REST API。我需要记录所有的请求与输入参数(与方法,例如。GET, POST等),请求路径,查询字符串,此请求对应的类方法,以及此操作的响应,包括成功和错误。例如:

成功的要求:

http://example.com/api/users/1

Log应该是这样的:

{
   HttpStatus: 200,
   path: "api/users/1",
   method: "GET",
   clientIp: "0.0.0.0",
   accessToken: "XHGu6as5dajshdgau6i6asdjhgjhg",
   method: "UsersController.getUser",
   arguments: {
     id: 1 
   },
   response: {
      user: {
        id: 1,
        username: "user123",
        email: "user123@example.com"   
      }
   },
   exceptions: []       
}

或请求错误:

http://example.com/api/users/9999

Log应该是这样的:

{
   HttpStatus: 404,
   errorCode: 101,                 
   path: "api/users/9999",
   method: "GET",
   clientIp: "0.0.0.0",
   accessToken: "XHGu6as5dajshdgau6i6asdjhgjhg",
   method: "UsersController.getUser",
   arguments: {
     id: 9999 
   },
   returns: {            
   },
   exceptions: [
     {
       exception: "UserNotFoundException",
       message: "User with id 9999 not found",
       exceptionId: "adhaskldjaso98d7324kjh989",
       stacktrace: ...................    
   ]       
}

我希望Request/Response是一个单独的实体,在成功和错误的情况下都具有与该实体相关的自定义信息。

春季实现这一目标的最佳做法是什么,可能是使用过滤器吗?如果是,能否提供具体的例子?

我使用过@ControllerAdvice和@ExceptionHandler,但正如我提到的,我需要在一个地方(和单个日志)处理所有成功和错误请求。


当前回答

下面是我如何在春季数据休息 通过使用 org.springframework.web.util.ContentCachingRequestWrapper和 org.springframework.web.util.ContentCachingResponseWrapper

/**
 * Doogies very cool HTTP request logging
 *
 * There is also {@link org.springframework.web.filter.CommonsRequestLoggingFilter}  but it cannot log request method
 * And it cannot easily be extended.
 *
 * https://mdeinum.wordpress.com/2015/07/01/spring-framework-hidden-gems/
 * http://stackoverflow.com/questions/8933054/how-to-read-and-copy-the-http-servlet-response-output-stream-content-for-logging
 */
public class DoogiesRequestLogger extends OncePerRequestFilter {

  private boolean includeResponsePayload = true;
  private int maxPayloadLength = 1000;

  private String getContentAsString(byte[] buf, int maxLength, String charsetName) {
    if (buf == null || buf.length == 0) return "";
    int length = Math.min(buf.length, this.maxPayloadLength);
    try {
      return new String(buf, 0, length, charsetName);
    } catch (UnsupportedEncodingException ex) {
      return "Unsupported Encoding";
    }
  }

  /**
   * Log each request and respponse with full Request URI, content payload and duration of the request in ms.
   * @param request the request
   * @param response the response
   * @param filterChain chain of filters
   * @throws ServletException
   * @throws IOException
   */
  @Override
  protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {

    long startTime = System.currentTimeMillis();
    StringBuffer reqInfo = new StringBuffer()
     .append("[")
     .append(startTime % 10000)  // request ID
     .append("] ")
     .append(request.getMethod())
     .append(" ")
     .append(request.getRequestURL());

    String queryString = request.getQueryString();
    if (queryString != null) {
      reqInfo.append("?").append(queryString);
    }

    if (request.getAuthType() != null) {
      reqInfo.append(", authType=")
        .append(request.getAuthType());
    }
    if (request.getUserPrincipal() != null) {
      reqInfo.append(", principalName=")
        .append(request.getUserPrincipal().getName());
    }

    this.logger.debug("=> " + reqInfo);

    // ========= Log request and response payload ("body") ========
    // We CANNOT simply read the request payload here, because then the InputStream would be consumed and cannot be read again by the actual processing/server.
    //    String reqBody = DoogiesUtil._stream2String(request.getInputStream());   // THIS WOULD NOT WORK!
    // So we need to apply some stronger magic here :-)
    ContentCachingRequestWrapper wrappedRequest = new ContentCachingRequestWrapper(request);
    ContentCachingResponseWrapper wrappedResponse = new ContentCachingResponseWrapper(response);

    filterChain.doFilter(wrappedRequest, wrappedResponse);     // ======== This performs the actual request!
    long duration = System.currentTimeMillis() - startTime;

    // I can only log the request's body AFTER the request has been made and ContentCachingRequestWrapper did its work.
    String requestBody = this.getContentAsString(wrappedRequest.getContentAsByteArray(), this.maxPayloadLength, request.getCharacterEncoding());
    if (requestBody.length() > 0) {
      this.logger.debug("   Request body:\n" +requestBody);
    }

    this.logger.debug("<= " + reqInfo + ": returned status=" + response.getStatus() + " in "+duration + "ms");
    if (includeResponsePayload) {
      byte[] buf = wrappedResponse.getContentAsByteArray();
      this.logger.debug("   Response body:\n"+getContentAsString(buf, this.maxPayloadLength, response.getCharacterEncoding()));
    }

    wrappedResponse.copyBodyToResponse();  // IMPORTANT: copy content of response back into original response

  }


}

其他回答

@hahn的回答需要一些修改才能为我工作,但这是迄今为止我能得到的最可定制的东西。

它对我不起作用,可能是因为我也有一个HandlerInterceptorAdapter[?? ?但是我一直从那个版本的服务器得到不好的响应。这是我对它的修改。

public class LoggableDispatcherServlet extends DispatcherServlet {

    private final Log logger = LogFactory.getLog(getClass());

    @Override
    protected void doDispatch(HttpServletRequest request, HttpServletResponse response) throws Exception {

        long startTime = System.currentTimeMillis();
        try {
            super.doDispatch(request, response);
        } finally {
            log(new ContentCachingRequestWrapper(request), new ContentCachingResponseWrapper(response),
                    System.currentTimeMillis() - startTime);
        }
    }

    private void log(HttpServletRequest requestToCache, HttpServletResponse responseToCache, long timeTaken) {
        int status = responseToCache.getStatus();
        JsonObject jsonObject = new JsonObject();
        jsonObject.addProperty("httpStatus", status);
        jsonObject.addProperty("path", requestToCache.getRequestURI());
        jsonObject.addProperty("httpMethod", requestToCache.getMethod());
        jsonObject.addProperty("timeTakenMs", timeTaken);
        jsonObject.addProperty("clientIP", requestToCache.getRemoteAddr());
        if (status > 299) {
            String requestBody = null;
            try {
                requestBody = requestToCache.getReader().lines().collect(Collectors.joining(System.lineSeparator()));
            } catch (IOException e) {
                e.printStackTrace();
            }
            jsonObject.addProperty("requestBody", requestBody);
            jsonObject.addProperty("requestParams", requestToCache.getQueryString());
            jsonObject.addProperty("tokenExpiringHeader",
                    responseToCache.getHeader(ResponseHeaderModifierInterceptor.HEADER_TOKEN_EXPIRING));
        }
        logger.info(jsonObject);
    }
}

如果您只看到请求有效负载的一部分,则需要调用setMaxPayloadLength函数,因为它默认只在请求正文中显示50个字符。另外,如果你不想记录你的认证头,设置setIncludeHeaders为false也是一个好主意!

@Bean
public CommonsRequestLoggingFilter requestLoggingFilter() {
    CommonsRequestLoggingFilter loggingFilter = new CommonsRequestLoggingFilter();
    loggingFilter.setIncludeClientInfo(false);
    loggingFilter.setIncludeQueryString(false);
    loggingFilter.setIncludePayload(true);
    loggingFilter.setIncludeHeaders(false);
    loggingFilter.setMaxPayloadLength(500);
    return loggingFilter;
}

不要编写任何拦截器、过滤器、组件、方面等,这是一个非常常见的问题,并且已经解决了很多次。

Spring Boot有一个名为Actuator的模块,它提供了开箱即用的HTTP请求日志记录。有一个端点映射到/trace (SB1.x)或/actuator/httptrace (SB2.0+),它将显示最近100个HTTP请求。您可以自定义它以记录每个请求,或将其写入DB。

要获得您想要的端点,您需要spring-boot-starter-actuator依赖项,还需要将您正在寻找的端点“白名单”,并可能为其设置或禁用安全性。

另外,这个应用程序将在哪里运行?您将使用PaaS吗?托管提供商,例如Heroku,提供请求日志记录作为他们服务的一部分,你不需要做任何编码。

如果不需要记录已执行的java方法,则可以使用javax.servlet.Filter。

但是有了这个要求,您必须访问存储在DispatcherServlet的handlerMapping中的信息。也就是说,您可以重写DispatcherServlet来完成请求/响应对的日志记录。

下面是一个想法的例子,可以进一步加强和采用您的需要。

public class LoggableDispatcherServlet extends DispatcherServlet {

    private final Log logger = LogFactory.getLog(getClass());

    @Override
    protected void doDispatch(HttpServletRequest request, HttpServletResponse response) throws Exception {
        if (!(request instanceof ContentCachingRequestWrapper)) {
            request = new ContentCachingRequestWrapper(request);
        }
        if (!(response instanceof ContentCachingResponseWrapper)) {
            response = new ContentCachingResponseWrapper(response);
        }
        HandlerExecutionChain handler = getHandler(request);

        try {
            super.doDispatch(request, response);
        } finally {
            log(request, response, handler);
            updateResponse(response);
        }
    }

    private void log(HttpServletRequest requestToCache, HttpServletResponse responseToCache, HandlerExecutionChain handler) {
        LogMessage log = new LogMessage();
        log.setHttpStatus(responseToCache.getStatus());
        log.setHttpMethod(requestToCache.getMethod());
        log.setPath(requestToCache.getRequestURI());
        log.setClientIp(requestToCache.getRemoteAddr());
        log.setJavaMethod(handler.toString());
        log.setResponse(getResponsePayload(responseToCache));
        logger.info(log);
    }

    private String getResponsePayload(HttpServletResponse response) {
        ContentCachingResponseWrapper wrapper = WebUtils.getNativeResponse(response, ContentCachingResponseWrapper.class);
        if (wrapper != null) {

            byte[] buf = wrapper.getContentAsByteArray();
            if (buf.length > 0) {
                int length = Math.min(buf.length, 5120);
                try {
                    return new String(buf, 0, length, wrapper.getCharacterEncoding());
                }
                catch (UnsupportedEncodingException ex) {
                    // NOOP
                }
            }
        }
        return "[unknown]";
    }

    private void updateResponse(HttpServletResponse response) throws IOException {
        ContentCachingResponseWrapper responseWrapper =
            WebUtils.getNativeResponse(response, ContentCachingResponseWrapper.class);
        responseWrapper.copyBodyToResponse();
    }

}

HandlerExecutionChain—包含关于请求处理程序的信息。

然后你可以像下面这样注册这个dispatcher:

    @Bean
    public ServletRegistrationBean dispatcherRegistration() {
        return new ServletRegistrationBean(dispatcherServlet());
    }

    @Bean(name = DispatcherServletAutoConfiguration.DEFAULT_DISPATCHER_SERVLET_BEAN_NAME)
    public DispatcherServlet dispatcherServlet() {
        return new LoggableDispatcherServlet();
    }

下面是log的例子:

http http://localhost:8090/settings/test
i.g.m.s.s.LoggableDispatcherServlet      : LogMessage{httpStatus=500, path='/error', httpMethod='GET', clientIp='127.0.0.1', javaMethod='HandlerExecutionChain with handler [public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest)] and 3 interceptors', arguments=null, response='{"timestamp":1472475814077,"status":500,"error":"Internal Server Error","exception":"java.lang.RuntimeException","message":"org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.RuntimeException","path":"/settings/test"}'}

http http://localhost:8090/settings/params
i.g.m.s.s.LoggableDispatcherServlet      : LogMessage{httpStatus=200, path='/settings/httpParams', httpMethod='GET', clientIp='127.0.0.1', javaMethod='HandlerExecutionChain with handler [public x.y.z.DTO x.y.z.Controller.params()] and 3 interceptors', arguments=null, response='{}'}

http http://localhost:8090/123
i.g.m.s.s.LoggableDispatcherServlet      : LogMessage{httpStatus=404, path='/error', httpMethod='GET', clientIp='127.0.0.1', javaMethod='HandlerExecutionChain with handler [public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest)] and 3 interceptors', arguments=null, response='{"timestamp":1472475840592,"status":404,"error":"Not Found","message":"Not Found","path":"/123"}'}

更新

如果出现错误,Spring会自动进行错误处理。因此,basicerrorcontroller# error被显示为请求处理程序。如果你想保留原始的请求处理程序,那么你可以在#processDispatchResult被调用之前在spring-webmvc- 4.5.release -sources.jar!/org/springframework/web/servlet/DispatcherServlet.java:971中覆盖这个行为来缓存原始的处理程序。

目前Spring Boot拥有用于获取请求和响应日志的执行器特性。

但是您也可以使用Aspect(AOP)获取日志。

Aspect为您提供了诸如:@Before, @AfterReturning, @ afterthrows等注释。

@Before记录请求,@AfterReturning记录响应,@ afterthrows记录错误消息, 您可能不需要所有端点的日志,因此可以对包应用一些筛选器。

下面是一些例子:

请求:

@Before("within(your.package.where.endpoints.are..*)")
    public void endpointBefore(JoinPoint p) {
        if (log.isTraceEnabled()) {
            log.trace(p.getTarget().getClass().getSimpleName() + " " + p.getSignature().getName() + " START");
            Object[] signatureArgs = p.getArgs();


            ObjectMapper mapper = new ObjectMapper();
            mapper.enable(SerializationFeature.INDENT_OUTPUT);
            try {

                if (signatureArgs[0] != null) {
                    log.trace("\nRequest object: \n" + mapper.writeValueAsString(signatureArgs[0]));
                }
            } catch (JsonProcessingException e) {
            }
        }
    }

Here @Before("within(your.package.where.endpoint .are. *)")有包的路径。这个包中的所有端点都将生成日志。

响应:

@AfterReturning(value = ("within(your.package.where.endpoints.are..*)"),
            returning = "returnValue")
    public void endpointAfterReturning(JoinPoint p, Object returnValue) {
        if (log.isTraceEnabled()) {
            ObjectMapper mapper = new ObjectMapper();
            mapper.enable(SerializationFeature.INDENT_OUTPUT);
            try {
                log.trace("\nResponse object: \n" + mapper.writeValueAsString(returnValue));
            } catch (JsonProcessingException e) {
                System.out.println(e.getMessage());
            }
            log.trace(p.getTarget().getClass().getSimpleName() + " " + p.getSignature().getName() + " END");
        }
    }

这里@AfterReturning("within(your.package.where.endpoint .are. *)")有包的路径。这个包中的所有端点都将生成日志。对象returnValue也包含响应。

例外:

@AfterThrowing(pointcut = ("within(your.package.where.endpoints.are..*)"), throwing = "e")
public void endpointAfterThrowing(JoinPoint p, Exception e) throws DmoneyException {
    if (log.isTraceEnabled()) {
        System.out.println(e.getMessage());

        e.printStackTrace();


        log.error(p.getTarget().getClass().getSimpleName() + " " + p.getSignature().getName() + " " + e.getMessage());
    }
}

这里@ afterthrows (pointcut = ("within(your.package.where.endpoint .are..*)"), throws = "e")有包的路径。这个包中的所有端点都将生成日志。Exception包含错误响应。

以下是完整的代码:

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import org.apache.log4j.Logger;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;

@Aspect
@Order(1)
@Component
@ConditionalOnExpression("${endpoint.aspect.enabled:true}")
public class EndpointAspect {
    static Logger log = Logger.getLogger(EndpointAspect.class);

    @Before("within(your.package.where.is.endpoint..*)")
    public void endpointBefore(JoinPoint p) {
        if (log.isTraceEnabled()) {
            log.trace(p.getTarget().getClass().getSimpleName() + " " + p.getSignature().getName() + " START");
            Object[] signatureArgs = p.getArgs();


            ObjectMapper mapper = new ObjectMapper();
            mapper.enable(SerializationFeature.INDENT_OUTPUT);
            try {

                if (signatureArgs[0] != null) {
                    log.trace("\nRequest object: \n" + mapper.writeValueAsString(signatureArgs[0]));
                }
            } catch (JsonProcessingException e) {
            }
        }
    }

    @AfterReturning(value = ("within(your.package.where.is.endpoint..*)"),
            returning = "returnValue")
    public void endpointAfterReturning(JoinPoint p, Object returnValue) {
        if (log.isTraceEnabled()) {
            ObjectMapper mapper = new ObjectMapper();
            mapper.enable(SerializationFeature.INDENT_OUTPUT);
            try {
                log.trace("\nResponse object: \n" + mapper.writeValueAsString(returnValue));
            } catch (JsonProcessingException e) {
                System.out.println(e.getMessage());
            }
            log.trace(p.getTarget().getClass().getSimpleName() + " " + p.getSignature().getName() + " END");
        }
    }


    @AfterThrowing(pointcut = ("within(your.package.where.is.endpoint..*)"), throwing = "e")
    public void endpointAfterThrowing(JoinPoint p, Exception e) throws Exception {
        if (log.isTraceEnabled()) {
            System.out.println(e.getMessage());

            e.printStackTrace();


            log.error(p.getTarget().getClass().getSimpleName() + " " + p.getSignature().getName() + " " + e.getMessage());
        }
    }
}

在这里,使用@ConditionalOnExpression("${endpoint.aspect.enabled:true}")可以启用/禁用日志。只需添加endpoint.aspect。Enabled:true进入应用程序。属性并控制日志

更多关于AOP访问的信息:

关于AOP的Spring文档

关于AOP的示例文章