Google Http客戶端庫Java：com.fasterxml.jackson.core.JsonParseException：意外字符（“ G”

Question

我正在發出HTTP get請求，這給了我JSON響應：

{ time : 1345111524000
  sub : Test vote
  msg :
  remain : 420
  cur_time : 1345113672856
  ver : 1.2.2
  p_type : 0
  .....

我正在使用Java的Google HTTP客戶端庫

我的實施

static final HttpTransport HTTP_TRANSPORT = new NetHttpTransport();
static final JsonFactory JSON_FACTORY = new JacksonFactory();

public static class PollInfo{
    @Key("time")
    public String time;

    @Key("sub")
    public String sub;

    @Key("msg")
    public String msg;

    .
    .
    }

    public static class PollInfoUrl extends GenericUrl{
       public PollInfoUrl(String encodedUrl) {
         super(encodedUrl);
       }
    }

    public PollInfo getPollInfo()  throws Exception{
     HttpRequestFactory requestFactory =HTTP_TRANSPORT.createRequestFactory(
                     new         HttpRequestInitializer() {
          @Override
          public void initialize(HttpRequest request) {
            request.setParser(new JsonObjectParser(JSON_FACTORY));
          }
    });
     PollInfoUrl url = new PollInfoUrl("http://**IP**:8000/web1/num1?cmd=en_poll_info&src=src_web&ver=default&deviceToken=DUMMYDEVICETOKEN&ref_id=83f2491d-0b0c-4d1c-8a14-053256cf157a&p_type=0&p_creator=Wp&eid=3&sender=Wp";);
     HttpRequest request = requestFactory.buildGetRequest(url);
     PollInfo pollInfo = request.execute().parseAs(PollInfo.class);
     return pollInfo;
}//getPollInfo();

我可以解析項目中的其他URL，但是對於這種特殊情況，它給了我例外，因此我需要一些指導來對其進行修復。 以下是我的服務器異常日志

[WARN] Exception while dispatching incoming RPC call
com.google.gwt.user.client.rpc.SerializationException: Type 'com.fasterxml.jackson.core.JsonParseException' was not included in the set of types which can be serialized by this SerializationPolicy or its Class object could not be loaded. For security purposes, this type will not be serialized.: instance = com.fasterxml.jackson.core.JsonParseException: Unexpected character ('Q' (code 81)): expected a valid value (number, String, array, object, 'true', 'false' or 'null')
 at [Source: sun.net.www.protocol.http.HttpURLConnection$HttpInputStream@481a98fe; line: 1, column: 2]
    at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serialize(ServerSerializationStreamWriter.java:667)
    at com.google.gwt.user.client.rpc.impl.AbstractSerializationStreamWriter.writeObject(AbstractSerializationStreamWriter.java:126)
    at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter$ValueWriter$8.write(ServerSerializationStreamWriter.java:153)
    at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serializeValue(ServerSerializationStreamWriter.java:587)
    at com.google.gwt.user.server.rpc.RPC.encodeResponse(RPC.java:605)
    at com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure(RPC.java:393)
    at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:579)
    at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:208)
    at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:248)
    at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1097)
    at hello.common.ui.gwt.server.GWTCacheControlFilter.doFilter(GWTCacheControlFilter.java:50)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1088)
    at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
    at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
    at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
    at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:729)
    at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    at org.mortbay.jetty.handler.RequestLogHandler.handle(RequestLogHandler.java:49)
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    at org.mortbay.jetty.Server.handle(Server.java:324)
    at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
    at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:843)
    at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:647)
    at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
    at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
    at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
    at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)

請指導我我要去哪里了。 ：） 提前致謝。

Answer 1

您收到的JSON似乎無效。 它缺少引號和逗號。