Open fan2597 opened 1 month ago
从错误信息来看,您在使用 RestTemplate 进行 HTTP 请求时,期望的是 application/xml 类型的响应,但实际接收到的是 application/json 类型的响应。具体错误如下:
java Copy code JSON parse error: Unexpected character '{' (code 123) in prolog; expected '<' at [row,col {unknown-source}]: [1,1] 这意味着返回的数据格式与预期的不一致。要解决这个问题,可以按照以下步骤操作:
确认服务器返回的数据类型 首先,确保您所请求的服务返回的数据类型与您的客户端期望的一致。如果您的客户端期望的是 XML 格式的数据,但服务器返回的是 JSON 格式的数据,需要进行相应的调整。
修改 RestTemplate 的配置 如果服务器返回的是 JSON 数据,您需要确保 RestTemplate 配置正确,能够处理 JSON 数据。
配置 RestTemplate 接受 JSON 响应 确保 RestTemplate 可以处理 JSON 响应。Spring Boot 默认支持 JSON,但需要显式配置。
java Copy code import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter; import org.springframework.web.client.RestTemplate;
import java.util.Collections;
@Configuration public class RestTemplateConfig {
@Bean
public RestTemplate restTemplate() {
RestTemplate restTemplate = new RestTemplate();
restTemplate.setMessageConverters(Collections.singletonList(new MappingJackson2HttpMessageConverter()));
return restTemplate;
}
}
java
Copy code
HttpHeaders headers = new HttpHeaders();
headers.setAccept(Collections.singletonList(MediaType.APPLICATION_JSON));
HttpEntity
ResponseEntity
java
Copy code
ResponseEntity
java Copy code import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.http.ResponseEntity; import org.springframework.web.client.RestTemplate;
public class YourService { private static final Logger logger = LoggerFactory.getLogger(YourService.class); private final RestTemplate restTemplate;
public YourService(RestTemplate restTemplate) {
this.restTemplate = restTemplate;
}
public void yourMethod() {
String url = "http://example.com/api";
ResponseEntity<String> response = restTemplate.getForEntity(url, String.class);
logger.info("Response: {}", response.getBody());
}
} 通过这些步骤,您应该能够解决由于预期响应类型和实际响应类型不一致所引起的问题。如果问题仍然存在,请提供更多详细的错误日志和代码示例,以便进一步分析。
org.springframework.web.client.RestClientException: Error while extracting response for type [class com.alibaba.fastjson.JSONObject] and content type [application/xml]; nested exception is org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Unexpected character '{' (code 123) in prolog; expected '<' at [row,col {unknown-source}]: [1,1]; nested exception is com.fasterxml.jackson.core.JsonParseException: Unexpected character '{' (code 123) in prolog; expected '<' at [row,col {unknown-source}]: [1,1] org.springframework.web.client.RestClientException: Error while extracting response for type [class com.alibaba.fastjson.JSONObject] and content type [application/xml]; nested exception is org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Unexpected character '{' (code 123) in prolog; expected '<' at [row,col {unknown-source}]: [1,1]; nested exception is com.fasterxml.jackson.core.JsonParseException: Unexpected character '{' (code 123) in prolog; expected '<' at [row,col {unknown-source}]: [1,1] at org.springframework.web.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:119) at org.springframework.web.client.RestTemplate$ResponseEntityResponseExtractor.extractData(RestTemplate.java:998) at org.springframework.web.client.RestTemplate$ResponseEntityResponseExtractor.extractData(RestTemplate.java:981) at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:741) at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:674) at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:583) at com.microsoft.hydralab.common.file.impl.local.client.LocalStorageClient.upload(LocalStorageClient.java:75) at com.microsoft.hydralab.common.file.impl.local.LocalStorageClientAdapter.upload(LocalStorageClientAdapter.java:73) at com.microsoft.hydralab.common.file.StorageServiceClientProxy.upload(StorageServiceClientProxy.java:83) at com.microsoft.hydralab.common.util.AttachmentService.saveFileInStorage(AttachmentService.java:211) at com.microsoft.hydralab.common.util.AttachmentService.saveFileInStorageAndDB(AttachmentService.java:77) at com.microsoft.hydralab.common.util.AttachmentService.addAttachment(AttachmentService.java:59) at com.microsoft.hydralab.center.controller.PackageSetController.add(PackageSetController.java:140) at com.microsoft.hydralab.center.controller.PackageSetController$$FastClassBySpringCGLIB$$f14f947.invoke() at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:689) at com.microsoft.hydralab.center.controller.PackageSetController$$EnhancerBySpringCGLIB$$47473857.add() at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:879) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) at javax.servlet.http.HttpServlet.service(HttpServlet.java:660) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilterInternal(BasicAuthenticationFilter.java:155) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.csrf.CsrfFilter.doFilterInternal(CsrfFilter.java:117) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:92) at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:77) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:93) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.base/java.lang.Thread.run(Thread.java:834) Caused by: org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Unexpected character '{' (code 123) in prolog; expected '<' at [row,col {unknown-source}]: [1,1]; nested exception is com.fasterxml.jackson.core.JsonParseException: Unexpected character '{' (code 123) in prolog; expected '<' at [row,col {unknown-source}]: [1,1] at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.readJavaType(AbstractJackson2HttpMessageConverter.java:245) at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.read(AbstractJackson2HttpMessageConverter.java:227) at org.springframework.web.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:104) ... 99 more Caused by: com.fasterxml.jackson.core.JsonParseException: Unexpected character '{' (code 123) in prolog; expected '<' at [row,col {unknown-source}]: [1,1] at com.fasterxml.jackson.dataformat.xml.XmlFactory._initializeXmlReader(XmlFactory.java:717) at com.fasterxml.jackson.dataformat.xml.XmlFactory._createParser(XmlFactory.java:583) at com.fasterxml.jackson.dataformat.xml.XmlFactory._createParser(XmlFactory.java:30) at com.fasterxml.jackson.core.JsonFactory.createParser(JsonFactory.java:1083) at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3682) at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.readJavaType(AbstractJackson2HttpMessageConverter.java:239) ... 101 more Caused by: com.ctc.wstx.exc.WstxUnexpectedCharException: Unexpected character '{' (code 123) in prolog; expected '<' at [row,col {unknown-source}]: [1,1] at com.ctc.wstx.sr.StreamScanner.throwUnexpectedChar(StreamScanner.java:666) at com.ctc.wstx.sr.BasicStreamReader.nextFromProlog(BasicStreamReader.java:2148) at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1180) at com.fasterxml.jackson.dataformat.xml.XmlFactory._initializeXmlReader(XmlFactory.java:712) ... 106 more