程序里调用一个接口，昨天跑的时候还好好的，今天出现了这个问题： java.net.SocketException: Unexpected end of file from server。
这是代码：
//登录
HttpURLConnection loginConn = connect("http://192.168.0.53:20080/glsx/msg_plat/websvr/user/login?uct=xianyukobe@163.com&pwd=123456");
BufferedReader loginReader = new BufferedReader(new InputStreamReader(
loginConn.getInputStream()));
StringBuffer loginBuffer = buffer(loginReader);
System.out.println("登录返回："+ loginBuffer.toString());
loginReader.close();
JSONObject jo2 = JSONObject.fromObject(loginBuffer.toString());
String ssn = jo2.get("ssn").toString();
//创建应用
StringBuffer sb = new StringBuffer("http://192.168.0.53:20080/glsx/msg_plat/websvr/appkey/create_appkey?appnm=app11&appurl=/operating-icp/images/gpush/question-icon.png&ssn=");
sb.append(ssn);
HttpURLConnection createConn = connect(sb.toString());
BufferedReader createReader = new BufferedReader(new InputStreamReader(
createConn.getInputStream()));
StringBuffer createBuffer = buffer(createReader);
System.out.println("创建应用返回："+ createBuffer.toString());
createReader.close();
JSONObject jsonObject = JSONObject.fromObject(createBuffer.toString());
System.out.println(jsonObject.get("ret"));
其中分别调用了登录接口和创建应用接口，经过调试发现，登录接口没问题，但是创建应用接口有问题，就是上面说的那个问题。请问有谁遇到过吗？
检查一下服务器启动了吗？另外换个客户端访问试试呢
,也可能是网络造成的，创建应用接口的那个问题也是报这个错？
你把你的本地ip换成127.0.0.1试试！
异常信息全部贴出来，这种情况有可能是网络超时，网络原因造成的。
StringBuffer loginBuffer = buffer(loginReader);
System.out.println("登录返回："+ loginBuffer.toString());
loginReader.close();
JSONObject jo2 = JSONObject.fromObject(loginBuffer.toString());
String ssn = jo2.get("ssn").toString();
注---------------------------------------------
是不是因为你前面使用loginReader.close();将reader已经关闭，
后面再使用其上层loginBuffer，故报错了，试一下，应该是这个问题
//创建应用
StringBuffer sb = new StringBuffer("http://192.168.0.53:20080/glsx/msg_plat/websvr/appkey/create_appkey?appnm=app11&appurl=/operating-icp/images/gpush/question-icon.png&ssn=");
你把这个改成这样试试
//创建应用
StringBuffer sb = new StringBuffer("http://192.168.0.53:20080/glsx/msg_plat/websvr/appkey/create_appkey?appnm=app11&appurl=/operating-icp/images/gpush/q
uestion-icon.png&ssn="**+ssn**);
这个程序昨天跑没问的。今天出现了上面的问题，刚又来按你们的试了试，又出现这个问题2016-12-30 17:59:39.271:WARN::/operating-icp/gpush/gcreate.do: java.net.ConnectException: Connection timed out: connect。。。。我感觉不是程序的问题，而是网络的问题。
看一下服务端后台有没有报错，就是主机192.168.0.53的服务日志
看一下服务端后台log
HTTP ERROR 500
Problem accessing /operating-icp/gpush/gcreate.do. Reason:
Connection timed out: connect
Caused by:
java.net.ConnectException: Connection timed out: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:579)
at java.net.Socket.connect(Socket.java:528)
at sun.net.NetworkClient.doConnect(NetworkClient.java:180)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:527)
at sun.net.www.http.HttpClient.<init>(HttpClient.java:211)
at sun.net.www.http.HttpClient.New(HttpClient.java:308)
at sun.net.www.http.HttpClient.New(HttpClient.java:326)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:997)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:933)
at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:851)
at com.glsx.icp.web.business.gpush.GpushController.connect(GpushController.java:29)
at com.glsx.icp.web.business.gpush.GpushController.gCreate(GpushController.java:55)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:219)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:745)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:686)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:827)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1221)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
at org.jasig.cas.client.filter.CasFilter.doFilter(CasFilter.java:90)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
at org.jasig.cas.client.util.AssertionThreadLocalFilter.doFilter(AssertionThreadLocalFilter.java:73)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
at org.jasig.cas.client.util.HttpServletRequestWrapperFilter.doFilter(HttpServletRequestWrapperFilter.java:92)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
at org.jasig.cas.client.validation.AbstractTicketValidationFilter.doFilter(AbstractTicketValidationFilter.java:228)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
at org.jasig.cas.client.authentication.AuthenticationFilter.doFilter(AuthenticationFilter.java:130)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
at org.jasig.cas.client.session.SingleSignOutFilter.doFilter(SingleSignOutFilter.java:76)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
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