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HTTP get リクエストを作成すると、JSON レスポンスが返されます。

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

Java 用の Google HTTP クライアント ライブラリを使用しています

私の実装

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();

プロジェクト内の他の URL を解析できますが、この特定のケースでは例外が発生するため、修正するには何らかのガイダンスが必要です。以下は私のサーバー例外ログです

[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)

どこが間違っているのか教えてください。：） 前もって感謝します。

4

1 に答える 1

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受け取った JSON は無効のようです。引用符とコンマがありません。

于 2014-11-07T11:20:28.270 に答える