我有一个基于Jersey的Rest WS输出JSON。我正在实现一个HttpClient来调用WS并使用JSON响应。我的客户代码在
之下public static String sendPostRequest(String url, String accept,
String authorization, Map<String, String> body)
throws UnsupportedOperationException, IOException {
HttpClient client = HttpClientBuilder.create().build();
HttpPost post = new HttpPost(url);
if (authorization != null && !authorization.equals("")) {
post.setHeader("Authorization", "Bearer " + authorization);
// post.setHeader("access_token", authorization);
}
List<NameValuePair> urlParameters = new ArrayList<NameValuePair>();
for (Map.Entry<String, String> map : body.entrySet()) {
String key = map.getKey();
String value = map.getValue();
urlParameters.add(new BasicNameValuePair(key, value));
}
UrlEncodedFormEntity urlEncodedFormEntity = new UrlEncodedFormEntity(
urlParameters);
post.setEntity(urlEncodedFormEntity);
HttpResponse response = client.execute(post);
System.out.println("Response Code : "
+ response.getStatusLine().getStatusCode());
String json = EntityUtils.toString(response.getEntity());
System.out.println("JSON : " + json);
return json;
}
我将访问令牌作为标头发送。如果我对此curl -X POST http://192.168.33.70:8080/management/orgs/org1/apps?access_token=YWMtXh3LwK4XEeWaSPc_E_-PwQAAAVIRV758KgNhJ-y3wNNAx5MLSmwTQvi1OPg -d '{"name":"app1"}'使用curl命令，我会得到正确的响应，但是通过HttpClient我得到以下异常堆栈跟踪：
2015-12-29 12:49:18 ERROR rest.exceptions.AbstractExceptionMapper.toResponse(72)<http-bio-8080-exec-5>- javax.ws.rs.WebApplicationException Server Error (500)
javax.ws.rs.WebApplicationException: com.sun.jersey.api.MessageException: A message body reader for Java class java.util.Map, and Java type java.util.Map<java.lang.String, java.lang.Object>, and MIME media type application/x-www-form-urlencoded was not found.
at com.sun.jersey.spi.container.ContainerRequest.getEntity(ContainerRequest.java:477)
at com.sun.jersey.server.impl.model.method.dispatch.EntityParamDispatchProvider$EntityInjectable.getValue(EntityParamDispatchProvider.java:123)
at com.sun.jersey.server.impl.inject.InjectableValuesProvider.getInjectableValues(InjectableValuesProvider.java:86)
at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$EntityParamInInvoker.getParams(AbstractResourceMethodDispatchProvider.java:153)
at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:183)
at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302)
at com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorRule.java:137)
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
at com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorRule.java:137)
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
at com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorRule.java:137)
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1542)
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1473)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1419)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1409)
at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:409)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:558)
at com.sun.jersey.spi.container.servlet.ServletContainer.doFilter(ServletContainer.java:927)
at com.sun.jersey.spi.container.servlet.ServletContainer.doFilter(ServletContainer.java:875)
at com.sun.jersey.spi.container.servlet.ServletContainer.doFilter(ServletContainer.java:829)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)
at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)
at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)
at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.usergrid.rest.filters.ContentTypeFilter.doFilter(ContentTypeFilter.java:92)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:313)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: com.sun.jersey.api.MessageException: A message body reader for Java class java.util.Map, and Java type java.util.Map<java.lang.String, java.lang.Object>, and MIME media type application/x-www-form-urlencoded was not found.
我的请求中有正确的MIME类型。我的POJO已使用XMLRootElement注释。任何帮助都将受到高度赞赏。
答案 0 :(得分：0)
Caused by: com.sun.jersey.api.MessageException: A message body reader for Java class java.util.Map, and Java type java.util.Map<java.lang.String, java.lang.Object>, and MIME media type application/x-www-form-urlencoded was not found.
正如异常消息所示，您正在尝试将Marshall / Unmarshall Map数据类型映射到JSON，而Jersey中默认不支持该对象，因为对象的编组/解组由不支持映射的JAXB处理。但是，谷歌可以通过GSON覆盖实施，以注册MessageBodyReader / Writer。可以找到使用带有Jersey的GSON的简单实现here。除此之外，还有许多可在互联网上使用Jersey的GSON实现。
我更感兴趣的是 UrlEncodedFormEntity 类的代码。请发布以获得更多见解。