使用休息模板时收到错误请求

尝试使用 RestTemplate 时，我一直收到错误的请求错误 . 我已经尝试了 getForObject() 和 exchange() 方法，但都没有工作，所以我做错了什么？

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api名称）

2018-06-08 14:59:20错误ErrorPageFilter：176 - 由于异常[400错误请求] org.springframework.web.client.HttpClientErrorException转发到请求[/ api / cal / dep]的错误页面：400错误请在org.springframework.web.client.Retponse.Retponse.Retponse(RetTemplate.handleResponse(RestTemplate.java:700）org.springframework.web.client.RestTemplate上的org.springframework.web.client.DefaultResponseErrorHandler.handleError（DefaultResponseErrorHandler.java:63）请求 . dodecute（RestTemplate.java:653）位于org.springframework.web.client.RestTemplate.execute（RestTemplate.java:613）的ord.springframework.web.client.RestTemplate.exchange（RestTemplate.java:531）at ddz.dd .vack.service.tar.gett（tar.java:51）at ddz.dd.vack.service.tar.calc（tar.java:57）at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method）at sun.reflect位于java.lang.reflect.Method.invok的sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）的.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:62） E（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）在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）在组织位于org.springframework.web.se的org.springframework.web.servlet.DispatcherServlet.doService（DispatcherServlet.java:901）的.springframework.web.servlet.DispatcherServlet.doDispatch（DispatcherServlet.java:967）位于org.springframework.web.servlet.FrameworkServlet.doPost（FrameworkServlet.java:872）的rvlet.FrameworkServlet.processRequest（FrameworkServlet.java:970）位于org的javax.servlet.http.HttpServlet.service（HttpServlet.java:661） .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）org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）位于org.apache.catalina的org.apache.tomcat.websocket.server.WsFilter.doFilter（WsFilter.java:52） . core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:193）org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）org.springframework.web.filter.OncePerRequestFilter.doFilter（OncePerRequestFilter.java:101）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（Applicati） onFilterChain.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 . orc.springframework.security.web.Filter . .java：331）org.springframework.security.web.session.SessionManagementFilter.doFilter（SessionManagementFilter.java:137）at org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（Filter ChainProxy.java:331）在org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter（AnonymousAuthenticationFilter.java:111）在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）在组织org.springframework.security.web.savedrequest上的org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）中的.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter（SecurityContextHolderAwareRequestFilter.java:170） .RequestCacheAwareFilter.doFilter（RequestCacheAwareFilter.java:63）atorg.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter在org.springframework.web.filter.OncePerRequestFilter（FilterChainProxy.java:331）在org.springframework.web.filter.CorsFilter.doFilterInternal（CorsFilter.java:96） . doFilter（OncePerRequestFilter.java:107）org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）org.springframework.security.oauth2.provider.authentication.OAuth2AuthenticationProcessingFilter.doFilter（OAuth2AuthenticationProcessingFilter.java： 176）org.springframework上的org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）org.springframework.security.web.authentication.logout.LogoutFilter.doFilter（LogoutFilter.java:116）位于org.springframework.web.f的org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal（HeaderWriterFilter.java:64）的.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331） ilter.OncePerRequestFilter.doFilter（OncePerRequestFilter.java:107）org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter（SecurityContextPersistenceFilter . java：105）org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331）at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal（WebAsyncManagerIntegrationFilter.java:56） org.springframework.web.filter.OncePerRequestFilter.doFilter（OncePerRequestFilter.java:107）位于org.springframework.security.web.FilterChainProxy的org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter（FilterChainProxy.java:331） .doFilterInternal（FilterChainProxy.java:214）位于org.springframework.web.filter.DelegatingFilte的org.springframework.security.web.FilterChainProxy.doFilter（FilterChainProxy.java:177） org.springframework.web.filter.DelegatingFilterProxy.doFilter（DelegatingFilterProxy.java:262）的rProxy.invokeDelegate（DelegatingFilterProxy.java:346）位于org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:193）org .apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）org.springframework.web.filter.RequestContextFilter.doFilterInternal（RequestContextFilter.java:99）at org.springframework.web.filter.OncePerRequestFilter.doFilter（OncePerRequestFilter） .java：107）org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:193）org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）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.interna lDoFilter（ApplicationFilterChain.java:193）位于org.springframework的org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal（HiddenHttpMethodFilter.java:81）位于org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:193）的.web.filter.OncePerRequestFilter.doFilter（OncePerRequestFilter.java:107）位于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）org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）org.springframework.boot.web.support.ErrorPageFilter.doFilter（ErrorP） ageFilter.java:115）org.springframework.boot.web.support.ErrorPageFilter.access $ 000（ErrorPageFilter.java:59）at 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）atorg.apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:96）org.apache.catalina.authenticator.AuthenticatorBase.invoke（AuthenticatorBase.java:504）org.apache.catalina.core.StandardHostValve.invoke（ StandardHostValve.java:140）atg.apache.catalina.valves.ErrorReportValve.invoke（ErrorReportValve.java:81）org.apache.catalina.valves.AbstractAccessLogValve.invoke（AbstractAccessLogValve.java:650）org.apache.catalina .core.StandardEngineValve.invoke（StandardEngineValve.java:87）org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter.java:342）org.apache.coyote.http11.Http11Processor.service（Http11Processor.java:803） ）org.apache.coyote.AbstractProcessorLight.process（AbstractProcessorLight.java:66）org.apache.coyote.AbstractProtocol $ ConnectionHandler.process（AbstractProtocol.java:790）at org.apache.tomcat.util.net.NioEndpoint $ Org.apache.tomcat.util.net.SocketProcessorBase.run中的SocketProcessor.doRun（NioEndpoint.java:1459）（SocketProcessorB ase.java:49）at 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）at java.lang.Thread.run（Thread.java:748）