Related to the response using ClientHttpInterceptor, I found a way of keeping the whole response without Buffering factories. Just store the response body input stream inside byte array using some utils method that will copy that array from body, but important, surround this method with try catch because it will break if response is empty (that is the cause of Resource Access Exception) and in catch just create empty byte array, and than just create anonymous inner class of ClientHttpResponse using that array and other parameters from the original response. Than you can return that new ClientHttpResponse object to the rest template execution chain and you can log response using body byte array that is previously stored. That way you will avoid consuming InputStream in the actual response and you can use Rest Template response as it is. Note, this may be dangerous if your's response is too big

用一些代码扩展@hstoerr answer:

创建LoggingRequestInterceptor来记录请求响应

public class LoggingRequestInterceptor implements ClientHttpRequestInterceptor {

    private static final Logger log = LoggerFactory.getLogger(LoggingRequestInterceptor.class);

    @Override
    public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution) throws IOException {

        ClientHttpResponse response = execution.execute(request, body);

        log(request,body,response);

        return response;
    }

    private void log(HttpRequest request, byte[] body, ClientHttpResponse response) throws IOException {
        //do logging
    }
}

设置创建RestTemplate

RestTemplate rt = new RestTemplate();

//set interceptors/requestFactory
ClientHttpRequestInterceptor ri = new LoggingRequestInterceptor();
List<ClientHttpRequestInterceptor> ris = new ArrayList<ClientHttpRequestInterceptor>();
ris.add(ri);
rt.setInterceptors(ris);
rt.setRequestFactory(new BufferingClientHttpRequestFactory(new SimpleClientHttpRequestFactory());

在Apache HttpClient的帮助下登录Logback:

在类路径中需要Apache HttpClient:

<dependency>
  <groupId>org.apache.httpcomponents</groupId>
  <artifactId>httpclient</artifactId>
  <version>4.5.10</version>
</dependency>

配置您的RestTemplate以使用HttpClient:

restTemplate.setRequestFactory(new HttpComponentsClientHttpRequestFactory());

要记录请求和响应，请添加到Logback配置文件:

<logger name="org.apache.http.wire" level="DEBUG"/>

或者记录更多:

<logger name="org.apache.http" level="DEBUG"/>

如果您正在使用任何ClientHttpRequestInterceptor，那么使用BufferingClientHttpRequestFactory配置RestTemplate的技巧将不起作用，如果您试图通过拦截器进行日志记录，则会发生这种情况。这是由于InterceptingHttpAccessor (RestTemplate的子类)的工作方式。

长话短说……只需要使用这个类来代替RestTemplate(注意它使用SLF4J日志API，根据需要编辑):

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.Constructor;
import java.nio.charset.StandardCharsets;
import java.util.List;
import java.util.Map;

import javax.annotation.PostConstruct;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpRequest;
import org.springframework.http.HttpStatus;
import org.springframework.http.client.ClientHttpRequestExecution;
import org.springframework.http.client.ClientHttpRequestInterceptor;
import org.springframework.http.client.ClientHttpResponse;
import org.springframework.web.client.RestTemplate;

/**
 * A {@link RestTemplate} that logs every request and response.
 */
public class LoggingRestTemplate extends RestTemplate {

    // Bleh, this class is not public
    private static final String RESPONSE_WRAPPER_CLASS = "org.springframework.http.client.BufferingClientHttpResponseWrapper";

    private Logger log = LoggerFactory.getLogger(this.getClass());

    private boolean hideAuthorizationHeaders = true;
    private Class<?> wrapperClass;
    private Constructor<?> wrapperConstructor;

    /**
     * Configure the logger to log requests and responses to.
     *
     * @param log log destination, or null to disable
     */
    public void setLogger(Logger log) {
        this.log = log;
    }

    /**
     * Configure the logger to log requests and responses to by name.
     *
     * @param name name of the log destination, or null to disable
     */
    public void setLoggerName(String name) {
        this.setLogger(name != null ? LoggerFactory.getLogger(name) : null);
    }

    /**
     * Configure whether to hide the contents of {@code Authorization} headers.
     *
     * <p>
     * Default true.
     *
     * @param hideAuthorizationHeaders true to hide, otherwise false
     */
    public void setHideAuthorizationHeaders(boolean hideAuthorizationHeaders) {
        this.hideAuthorizationHeaders = hideAuthorizationHeaders;
    }

    /**
     * Log a request.
     */
    protected void traceRequest(HttpRequest request, byte[] body) {
        this.log.debug("xmit: {} {}\n{}{}", request.getMethod(), request.getURI(), this.toString(request.getHeaders()),
          body != null && body.length > 0 ? "\n\n" + new String(body, StandardCharsets.UTF_8) : "");
    }

    /**
     * Log a response.
     */
    protected void traceResponse(ClientHttpResponse response) {
        final ByteArrayOutputStream bodyBuf = new ByteArrayOutputStream();
        HttpStatus statusCode = null;
        try {
            statusCode = response.getStatusCode();
        } catch (IOException e) {
            // ignore
        }
        String statusText = null;
        try {
            statusText = response.getStatusText();
        } catch (IOException e) {
            // ignore
        }
        try (final InputStream input = response.getBody()) {
            byte[] b = new byte[1024];
            int r;
            while ((r = input.read(b)) != -1)
                bodyBuf.write(b, 0, r);
        } catch (IOException e) {
            // ignore
        }
        this.log.debug("recv: {} {}\n{}{}", statusCode, statusText, this.toString(response.getHeaders()),
          bodyBuf.size() > 0 ? "\n\n" + new String(bodyBuf.toByteArray(), StandardCharsets.UTF_8) : "");
    }

    @PostConstruct
    private void addLoggingInterceptor() {
        this.getInterceptors().add(new ClientHttpRequestInterceptor() {
            @Override
            public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution)
              throws IOException {

                // Log request
                if (LoggingRestTemplate.this.log != null && LoggingRestTemplate.this.log.isDebugEnabled())
                    LoggingRestTemplate.this.traceRequest(request, body);

                // Perform request
                ClientHttpResponse response = execution.execute(request, body);

                // Log response
                if (LoggingRestTemplate.this.log != null && LoggingRestTemplate.this.log.isDebugEnabled()) {
                    final ClientHttpResponse bufferedResponse = LoggingRestTemplate.this.ensureBuffered(response);
                    if (bufferedResponse != null) {
                        LoggingRestTemplate.this.traceResponse(bufferedResponse);
                        response = bufferedResponse;
                    }
                }

                // Done
                return response;
            }
        });
    }

    private ClientHttpResponse ensureBuffered(ClientHttpResponse response) {
        try {
            if (this.wrapperClass == null)
                this.wrapperClass = Class.forName(RESPONSE_WRAPPER_CLASS, false, ClientHttpResponse.class.getClassLoader());
            if (!this.wrapperClass.isInstance(response)) {
                if (this.wrapperConstructor == null) {
                    this.wrapperConstructor = this.wrapperClass.getDeclaredConstructor(ClientHttpResponse.class);
                    this.wrapperConstructor.setAccessible(true);
                }
                response = (ClientHttpResponse)this.wrapperConstructor.newInstance(response);
            }
            return response;
        } catch (Exception e) {
            this.log.error("error creating {} instance: {}", RESPONSE_WRAPPER_CLASS, e);
            return null;
        }
    }

    private String toString(HttpHeaders headers) {
        final StringBuilder headerBuf = new StringBuilder();
        for (Map.Entry<String, List<String>> entry : headers.entrySet()) {
            if (headerBuf.length() > 0)
                headerBuf.append('\n');
            final String name = entry.getKey();
            for (String value : entry.getValue()) {
                if (this.hideAuthorizationHeaders && name.equalsIgnoreCase(HttpHeaders.AUTHORIZATION))
                    value = "[omitted]";
                headerBuf.append(name).append(": ").append(value);
            }
        }
        return headerBuf.toString();
    }
}

我同意花这么多功夫来做这件事很愚蠢。

我的日志记录器配置使用XML

<logger name="org.springframework.web.client.RestTemplate">
    <level value="trace"/>
</logger>

然后你会得到如下内容:

DEBUG org.springframework.web.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:92) : Reading [com.test.java.MyClass] as "application/json" using [org.springframework.http.converter.json.MappingJackson2HttpMessageConverter@604525f1]

通过HttpMessageConverterExtractor.java:92，你需要继续调试，在我的情况下，我得到了这个:

genericMessageConverter.write(requestBody, requestBodyType, requestContentType, httpRequest);

这:

outputMessage.getBody().flush();

outputMessage.getBody()包含http(post类型)发送的消息

假设RestTemplate配置为使用HttpClient 4。x，你可以在这里阅读HttpClient的日志文档。这些记录器与其他答案中指定的记录器不同。

HttpClient 3的日志配置。X在这里可用。