Question

尝试使用RestTemplate时，我一直收到错误的请求错误。我尝试了getForObject()和exchange()两种方法，但都没有工作，所以我做错了吗？

HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_JSON);
headers.add("Accept", MediaType.APPLICATION_JSON.toString());

MultiValueMap<String, String> requestBody = new LinkedMultiValueMap<>();
requestBody.add("param1", "value1");
requestBody.add("param2", "true");

RestTemplate restTemplate = new RestTemplate();
return restTemplate.exchange(API_URI, HttpMethod.POST,
                    new HttpEntity<>(requestBody, headers), String.class);

堆栈跟踪:(隐藏的api名称）

2018-06-08 14:59:20错误ErrorPageFilter：176 - 由于异常[400错误请求]转发到请求[/ api / cal / dep]的错误页面 org.springframework.web.client.HttpClientErrorException：400 Bad Request 在org.springframework.web.client.DefaultResponseErrorHandler.handleError（DefaultResponseErrorHandler.java:63）在org.springframework.web.client.RestTemplate.handleResponse（RestTemplate.java:700）在org.springframework.web.client.RestTemplate.doExecute（RestTemplate.java:653）在org.springframework.web.client.RestTemplate.execute（RestTemplate.java:613）在org.springframework.web.client.RestTemplate.exchange（RestTemplate.java:531）在ddz.dd.vack.service.tar.gett（tar.java:51）在ddz.dd.vack.service.tar.calc（tar.java:57） at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method） at sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:62） at sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43） at java.lang.reflect.Method.invoke（Method.java:498）在org.springframework.web.method.support.InvocableHandlerMethod.doInvoke（InvocableHandlerMethod.java:205）在org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest（InvocableHandlerMethod.java:133） at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle（ServletInvocableHandlerMethod.java:97）在org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod（RequestMappingHandlerAdapter.java:827）在org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal（RequestMappingHandlerAdapter.java:738）在org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle（AbstractHandlerMethodAdapter.java:85）在org.springframework.web.servlet.DispatcherServlet.doDispatch（DispatcherServlet.java:967）在org.springframework.web.servlet.DispatcherServlet.doService（DispatcherServlet.java:901）在org.springframework.web.servlet.FrameworkServlet.processRequest（FrameworkServlet.java:970）在org.springframework.web.servlet.FrameworkServlet.doPost（FrameworkServlet.java:872）在javax.servlet.http.HttpServlet.service（HttpServlet.java:661）在org.springframework.web.servlet.FrameworkServlet.service（FrameworkServlet.java:846）在javax.servlet.http.HttpServlet.service（HttpServlet.java:742）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:231）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）在org.apache.tomcat.websocket.server.WsFilter.doFilter（WsFilter.java:52）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:193）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）在org.springframework.web.filter.OncePerRequestFilter.doFilter（OncePerRequestFilter.java:101）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:193）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:317）在org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke（FilterSecurityInterceptor.java:127）在org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter（FilterSecurityInterceptor.java:91）在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）在org.springframework.security.web.access.ExceptionTranslationFilter.doFilter（ExceptionTranslationFilter.java:114）在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）在org.springframework.security.web.session.SessionManagementFilter.doFilter（SessionManagementFilter.java:137）在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）在org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter（AnonymousAuthenticationFilter.java:111）在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）在org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter（SecurityContextHolderAwareRequestFilter.java:170）在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）在org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter（RequestCacheAwareFilter.java:63）在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）在org.springframework.web.filter.CorsFilter.doFilterInternal（CorsFilter.java:96）在org.springframework.web.filter.OncePerRequestFilter.doFilter（OncePerRequestFilter.java:107）在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）在org.springframework.security.oauth2.provider.authentication.OAuth2AuthenticationProcessingFilter.doFilter（OAuth2AuthenticationProcessingFilter.java:176）在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）在org.springframework.security.web.authentication.logout.LogoutFilter.doFilter（LogoutFilter.java:116）在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）在org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal（HeaderWriterFilter.java:64）在org.springframework.web.filter.OncePerRequestFilter.doFilter（OncePerRequestFilter.java:107）在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）在org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter（SecurityContextPersistenceFilter.java:105）在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）在org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal（WebAsyncManagerIntegrationFilter.java:56）在org.springframework.web.filter.OncePerRequestFilter.doFilter（OncePerRequestFilter.java:107）在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）在org.springframework.security.web.FilterChainProxy.doFilterInternal（FilterChainProxy.java:214）在org.springframework.security.web.FilterChainProxy.doFilter（FilterChainProxy.java:177）在org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate（DelegatingFilterProxy.java:346）在org.springframework.web.filter.DelegatingFilterProxy.doFilter（DelegatingFilterProxy.java:262）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:193）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）在org.springframework.web.filter.RequestContextFilter.doFilterInternal（RequestContextFilter.java:99）在org.springframework.web.filter.OncePerRequestFilter.doFilter（OncePerRequestFilter.java:107）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:193）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）在org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal（HttpPutFormContentFilter.java:105）在org.springframework.web.filter.OncePerRequestFilter.doFilter（OncePerRequestFilter.java:107）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:193）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）在org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal（HiddenHttpMethodFilter.java:81）在org.springframework.web.filter.OncePerRequestFilter.doFilter（OncePerRequestFilter.java:107）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:193）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）在org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal（CharacterEncodingFilter.java:197）在org.springframework.web.filter.OncePerRequestFilter.doFilter（OncePerRequestFilter.java:107）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:193）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）在org.springframework.boot.web.support.ErrorPageFilter.doFilter（ErrorPageFilter.java:115）在org.springframework.boot.web.support.ErrorPageFilter.access $ 000（ErrorPageFilter.java:59）在org.springframework.boot.web.support.ErrorPageFilter $ 1.doFilterInternal（ErrorPageFilter.java:90）在org.springframework.web.filter.OncePerRequestFilter.doFilter（OncePerRequestFilter.java:107）在org.springframework.boot.web.support.ErrorPageFilter.doFilter（ErrorPageFilter.java:108）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:193）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）在org.apache.logging.log4j.web.Log4jServletFilter.doFilter（Log4jServletFilter.java:71）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:193）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）在org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:198）在org.apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:96）在org.apache.catalina.authenticator.AuthenticatorBase.invoke（AuthenticatorBase.java:504）在org.apache.catalina.core.StandardHostValve.invoke（StandardHostValve.java:140） at org.apache.catalina.valves.ErrorReportValve.invoke（ErrorReportValve.java:81） at org.apache.catalina.valves.AbstractAccessLogValve.invoke（AbstractAccessLogValve.java:650）在org.apache.catalina.core.StandardEngineValve.invoke（StandardEngineValve.java:87）在org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter.java:342）在org.apache.coyote.http11.Http11Processor.service（Http11Processor.java:803）在org.apache.coyote.AbstractProcessorLight.process（AbstractProcessorLight.java:66） at org.apache.coyote.AbstractProtocol $ ConnectionHandler.process（AbstractProtocol.java:790）在org.apache.tomcat.util.net.NioEndpoint $ SocketProcessor.doRun（NioEndpoint.java:1459）在org.apache.tomcat.util.net.SocketProcessorBase.run（SocketProcessorBase.java:49）在java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1149） at java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:624） at org.apache.tomcat.util.threads.TaskThread $ WrappingRunnable.run（TaskThread.java:61）在java.lang.Thread.run（Thread.java:748）

Answer 1

您可以尝试删除Accept标头，因为它是默认的json

headers.add("Accept", MediaType.APPLICATION_JSON.toString());

OR

尝试添加接受标头，如下所示

headers.setAccept(Collections.singletonList(MediaType.APPLICATION_JSON));

并检查你提到的作为String.class的响应类型对象是什么，请交叉检查

您可以尝试更改

    headers.setAccept(Arrays.asList(MediaType.APPLICATION_JSON));
MultiValueMap<String, Object> requestBody = new LinkedMultiValueMap<>();
        requestBody.add("param1", "value1");
        requestBody.add("param2", true);Try this?

使用其他模板时遇到错误请求

1 个答案: