java websocket html5 启动服务器时抛出异常

javax.servlet.ServletException: javax.websocket.DeploymentException: Multiple Endpoints may not be deployed to the same path [/websocket] : existing endpoint was class WebSocketTest and new endpoint is class html5.MyWebSocket
at org.apache.tomcat.websocket.server.WsSci.onStartup(WsSci.java:123)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5303)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
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: javax.websocket.DeploymentException: Multiple Endpoints may not be deployed to the same path [/websocket] : existing endpoint was class WebSocketTest and new endpoint is class html5.MyWebSocket
at org.apache.tomcat.websocket.server.WsServerContainer.addEndpoint(WsServerContainer.java:225)
at org.apache.tomcat.websocket.server.WsServerContainer.addEndpoint(WsServerContainer.java:279)
at org.apache.tomcat.websocket.server.WsSci.onStartup(WsSci.java:120)
... 8 more

启动服务器时,信息中夹杂着这两个异常代码,什么意思呀?

1个回答

假如你是用tomcat运行的话,如果你注入了
@Bean
public ServerEndpointExporter serverEndpointExporter() {
return new ServerEndpointExporter();
}
并且使用了
@ServerEndpoint()
那么删除掉前者即可
这是stackoverflow的解释
https://stackoverflow.com/questions/31178799/websocket-issue-multiple-endpoints-may-not-be-deployed-to-the-same-path

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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.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:109) 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.FormContentFilter.doFilterInternal(FormContentFilter.java:92) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:109) 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.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:109) 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:200) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:109) 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:490) 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:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:853) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1587) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) 我的代码 public String joke() { try { // String urlTypeName = java.net.URLEncoder.encode(city1, "utf-8"); URL url = new URL("xxx"); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setConnectTimeout(5000); conn.setRequestMethod("GET"); if (conn.getResponseCode() == HttpURLConnection.HTTP_OK) { //结果码=200 InputStream is = conn.getInputStream(); //内存流 , ByteArrayOutputStream boas = new ByteArrayOutputStream(); byte[] buffer = new byte[1024]; int len = -1; while (is.available() != 0&&(len = is.read(buffer)) != -1) { boas.write(buffer, 0, len); } System.out.println("GET请求获取的数据:" + boas.toString()); JSONObject jsonObject = JSONObject.fromObject(boas.toString()); String reason = String.valueOf(jsonObject.get("reason")); if ("success".equals(reason)) { Object result = jsonObject.get("result"); JSONArray jsonArray = JSONArray.fromObject(result.toString()); int count = 0; String joke = ""; if (jsonArray.size() > 0) { for (int i = 0; i < jsonArray.size(); i++) { String content = String.valueOf(JSONObject.fromObject(jsonArray.get(i)).get("content")); count += 1; joke += " <tr align=\"center\" style=\"text-indent:2em;\">\n" + " <td >" + count + "." + content + "</td>\n" + " </tr>"; if (count == 3) { break; } } boas.close(); is.close(); return joke; } } } } catch (IOException e) { e.printStackTrace(); } return null; }
java.net.ConnectException: Connection refused: connect
昨天遇到了这个错,到现在没解决,求大佬帮助 1.服务器安装了一个8082的项目,网页访问服务器ip:8082没有任何问题 2.本地装了个node,启动了一个前端项目 localhost:3000,后端接口配的就是http://服务器ip:8082 然后本地掉服务器接口就一直报 java.net.ConnectException: Connection refused: connect, 3.前端是通过jsonp掉的接口 之前都是好的,请问怎么解决啊 spring boot 项目 服务器windows的,防火墙是关闭的,端口也没占用 错误信息 ``` java.net.ConnectException: Connection refused: connect at java.net.DualStackPlainSocketImpl.connect0(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:345) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:589) at java.net.Socket.connect(Socket.java:538) 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:1167) at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1103) at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:997) at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:931) at sun.net.www.protocol.http.HttpURLConnection.getOutputStream0(HttpURLConnection.java:1281) at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:1256) at com.sunline.utils.HttpUtil.httpRequest(HttpUtil.java:62) at com.sunline.utils.HttpUtil.httpRequest(HttpUtil.java:30) at com.sunline.web.controller.XlrLoginController.oauthLogin(XlrLoginController.java:134) at sun.reflect.GeneratedMethodAccessor66.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:209) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:877) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:783) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:991) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:925) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:974) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:866) at javax.servlet.http.HttpServlet.service(HttpServlet.java:687) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:851) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) 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:52) 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.filterAndRecordMetrics(WebMvcMetricsFilter.java:158) at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.filterAndRecordMetrics(WebMvcMetricsFilter.java:126) at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:111) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 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.web.trace.servlet.HttpTraceFilter.doFilterInternal(HttpTraceFilter.java:90) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 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.doFilterInternal(FilterChainProxy.java:209) at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:357) at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:270) 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:200) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 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:198) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:613) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1468) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745) ```
hibernate创建sessionFactory时抛出异常,求助大神们
在本地计算机上是运行正常的,然而我部署在阿里云服务器上面之后,却运行失败,找不到问题。 崩溃的代码块: ``` final StandardServiceRegistry registry = new StandardServiceRegistryBuilder() .configure() .build(); // build 一个sessionFactory SessionFactory sessionFactory = new MetadataSources(registry) .buildMetadata() .buildSessionFactory(); ``` 抛出的异常: ``` javax.servlet.ServletException: org.hibernate.MappingException: Could not get constructor for org.hibernate.persister.entity.SingleTableEntityPersister org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:434) org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:372) org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:389) org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:342) org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:229) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) Root Cause org.hibernate.MappingException: Could not get constructor for org.hibernate.persister.entity.SingleTableEntityPersister org.hibernate.persister.internal.PersisterFactoryImpl.createEntityPersister(PersisterFactoryImpl.java:123) org.hibernate.persister.internal.PersisterFactoryImpl.createEntityPersister(PersisterFactoryImpl.java:77) org.hibernate.metamodel.internal.MetamodelImpl.initialize(MetamodelImpl.java:181) org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:294) org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:462) org.hibernate.boot.internal.MetadataImpl.buildSessionFactory(MetadataImpl.java:184) com.pyn.web.welearn.factory.UserFactory.login(UserFactory.java:62) com.pyn.web.welearn.service.AccountService.login(AccountService.java:31) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) java.lang.reflect.Method.invoke(Method.java:498) org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:74) org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:144) org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:161) org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$TypeOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:247) org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:99) org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:388) org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:346) org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:102) org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:337) org.glassfish.jersey.internal.Errors$1.call(Errors.java:271) org.glassfish.jersey.internal.Errors$1.call(Errors.java:267) org.glassfish.jersey.internal.Errors.process(Errors.java:315) org.glassfish.jersey.internal.Errors.process(Errors.java:297) org.glassfish.jersey.internal.Errors.process(Errors.java:267) org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:280) org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:316) org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1084) org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:418) org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:372) org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:389) org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:342) org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:229) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) Root Cause org.hibernate.HibernateException: Unable to instantiate default tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer] org.hibernate.tuple.entity.EntityTuplizerFactory.constructTuplizer(EntityTuplizerFactory.java:91) org.hibernate.tuple.entity.EntityTuplizerFactory.constructDefaultTuplizer(EntityTuplizerFactory.java:116) org.hibernate.tuple.entity.EntityMetamodel.<init>(EntityMetamodel.java:382) org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:556) org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEntityPersister.java:124) sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) java.lang.reflect.Constructor.newInstance(Constructor.java:423) org.hibernate.persister.internal.PersisterFactoryImpl.createEntityPersister(PersisterFactoryImpl.java:96) org.hibernate.persister.internal.PersisterFactoryImpl.createEntityPersister(PersisterFactoryImpl.java:77) org.hibernate.metamodel.internal.MetamodelImpl.initialize(MetamodelImpl.java:181) org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:294) org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:462) org.hibernate.boot.internal.MetadataImpl.buildSessionFactory(MetadataImpl.java:184) com.pyn.web.welearn.factory.UserFactory.login(UserFactory.java:62) com.pyn.web.welearn.service.AccountService.login(AccountService.java:31) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) java.lang.reflect.Method.invoke(Method.java:498) org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:74) org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:144) org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:161) org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$TypeOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:247) org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:99) org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:388) org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:346) org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:102) org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:337) org.glassfish.jersey.internal.Errors$1.call(Errors.java:271) org.glassfish.jersey.internal.Errors$1.call(Errors.java:267) org.glassfish.jersey.internal.Errors.process(Errors.java:315) org.glassfish.jersey.internal.Errors.process(Errors.java:297) org.glassfish.jersey.internal.Errors.process(Errors.java:267) org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:280) org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:316) org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1084) org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:418) org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:372) org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:389) org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:342) org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:229) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ```
websocket 服务器推送数据库数据到浏览器
刚接触web方面的知识,想实现一个小项目,就是服务器不断的从数据库里取出最新的数据,然后把数据推送给web浏览器,看资料说websocket可以很好的实现这个功能,但是websocket的API就那几个监听事件,况且Onmessage,在接受到浏览器到服务器,或者服务器到浏览器的数据时,才会执行,但是,我现在不用浏览器发请求,就是浏览器连上服务器后,服务器就一直不断的推送数据到浏览器,用java实现,应该怎么做呢?有谁做过这方面的东西,请说说你们的做法
新手求助java websocket
用tomcat的chat例子websocket连不上
html5 websocket 问题
在用html5 websocket实现的聊天室中,如果让有的客户端不能进行登录,服务器应该怎么限制呀!那个方法怎么写呀!
WebSocket无法建立连接问题
同样的websocket地址,一台电脑可以建立连接,另一台电脑就无法建立连接,这种情况和电脑开了代理有关,还是有什么其他的问题?
html5 websocket ip设置问题
在html5 websocket 中,如果设置有的客户端不可以登录服务器的话,web服务器怎么直接设置禁止哪些ip访问你的网站呀!
centos7 Request processing failed; nested exception is com.github.tobato.fastdfs.exception.FdfsIOException: 客户端连接服务端出现了io异常:socket io exception occured while receive
<!doctype html> <html lang="en"> <head> <title>HTTP Status 500 – Internal Server Error</title> <style type="text/css"> h1 { font-family: Tahoma, Arial, sans-serif; color: white; background-color: #525D76; font-size: 22px; } h2 { font-family: Tahoma, Arial, sans-serif; color: white; background-color: #525D76; font-size: 16px; } h3 { font-family: Tahoma, Arial, sans-serif; color: white; background-color: #525D76; font-size: 14px; } body { font-family: Tahoma, Arial, sans-serif; color: black; background-color: white; } b { font-family: Tahoma, Arial, sans-serif; color: white; background-color: #525D76; } p { font-family: Tahoma, Arial, sans-serif; background: white; color: black; font-size: 12px; } a { color: black; } a.name { color: black; } .line { height: 1px; background-color: #525D76; border: none; } </style> </head> <body> <h1>HTTP Status 500 – Internal Server Error</h1> <hr class="line" /> <p><b>Type</b> Exception Report</p> <p><b>Message</b> Request processing failed; nested exception is com.github.tobato.fastdfs.exception.FdfsIOException: 客户端连接服务端出现了io异常:socket io exception occured while receive content</p> <p><b>Description</b> The server encountered an unexpected condition that prevented it from fulfilling the request. </p> <p><b>Exception</b></p> <pre>org.springframework.web.util.NestedServletException: Request processing failed; nested exception is com.github.tobato.fastdfs.exception.FdfsIOException: 客户端连接服务端出现了io异常:socket io exception occured while receive content org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:982) org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872) javax.servlet.http.HttpServlet.service(HttpServlet.java:661) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) javax.servlet.http.HttpServlet.service(HttpServlet.java:742) org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61) org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108) org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137) org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66) org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449) org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365) org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383) org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362) org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) com.shiwaixiangcun.core.filters.MonkeyCharacterEncodingFilter.doFilterInternal(MonkeyCharacterEncodingFilter.java:29) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:105) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) </pre> <p><b>Root Cause</b></p> <pre>com.github.tobato.fastdfs.exception.FdfsIOException: 客户端连接服务端出现了io异常:socket io exception occured while receive content com.github.tobato.fastdfs.proto.AbstractFdfsCommand.execute(AbstractFdfsCommand.java:48) com.github.tobato.fastdfs.conn.ConnectionManager.execute(ConnectionManager.java:71) com.github.tobato.fastdfs.conn.ConnectionManager.executeFdfsCmd(ConnectionManager.java:56) com.github.tobato.fastdfs.service.DefaultFastFileStorageClient.uploadThumbImage(DefaultFastFileStorageClient.java:166) com.github.tobato.fastdfs.service.DefaultFastFileStorageClient.uploadImageAndCrtThumbImage(DefaultFastFileStorageClient.java:83) com.github.tobato.fastdfs.service.DefaultFastFileStorageClient.uploadImageAndCrtThumbImage(DefaultFastFileStorageClient.java:65) com.shiwaixiangcun.core.plugin.upload.impl.FastdfsFileServiceImpl.uploadImageAndCrtThumbImage(FastdfsFileServiceImpl.java:69) com.shiwaixiangcun.core.plugin.upload.impl.FastdfsFileServiceImpl.store(FastdfsFileServiceImpl.java:56) com.shiwaixiangcun.core.plugin.upload.impl.AbstractFileService.tempImageAndCrtThumbImage(AbstractFileService.java:127) com.shiwaixiangcun.core.plugin.upload.impl.AbstractFileService.tempImageAndCrtThumbImage(AbstractFileService.java:139) com.shiwaixiangcun.core.web.controller.UploadFileController.uploadImages(UploadFileController.java:129) com.shiwaixiangcun.core.web.controller.UploadFileController$$FastClassBySpringCGLIB$$752e37e5.invoke(&lt;generated&gt;) org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:721) org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:85) com.shiwaixiangcun.core.context.ControllerAspect.around(ControllerAspect.java:99) sun.reflect.GeneratedMethodAccessor249.invoke(Unknown Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) java.lang.reflect.Method.invoke(Method.java:498) org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:629) org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:618) org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:70) org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:656) com.shiwaixiangcun.core.web.controller.UploadFileController$$EnhancerBySpringCGLIB$$8d35bb21.uploadImages(&lt;generated&gt;) sun.reflect.GeneratedMethodAccessor706.invoke(Unknown Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) java.lang.reflect.Method.invoke(Method.java:498) org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205) org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133) org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:116) org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827) org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738) org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872) javax.servlet.http.HttpServlet.service(HttpServlet.java:661) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) javax.servlet.http.HttpServlet.service(HttpServlet.java:742) org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61) org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108) org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137) org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66) org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449) org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365) org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383) org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362) org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) com.shiwaixiangcun.core.filters.MonkeyCharacterEncodingFilter.doFilterInternal(MonkeyCharacterEncodingFilter.java:29) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:105) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) </pre> <p><b>Root Cause</b></p> <pre>java.net.SocketTimeoutException: Read timed out java.net.SocketInputStream.socketRead0(Native Method) java.net.SocketInputStream.socketRead(SocketInputStream.java:116) java.net.SocketInputStream.read(SocketInputStream.java:171) java.net.SocketInputStream.read(SocketInputStream.java:141) java.net.SocketInputStream.read(SocketInputStream.java:127) com.github.tobato.fastdfs.proto.ProtoHead.createFromInputStream(ProtoHead.java:94) com.github.tobato.fastdfs.proto.AbstractFdfsCommand.receive(AbstractFdfsCommand.java:99) com.github.tobato.fastdfs.proto.AbstractFdfsCommand.execute(AbstractFdfsCommand.java:45) com.github.tobato.fastdfs.conn.ConnectionManager.execute(ConnectionManager.java:71) com.github.tobato.fastdfs.conn.ConnectionManager.executeFdfsCmd(ConnectionManager.java:56) com.github.tobato.fastdfs.service.DefaultFastFileStorageClient.uploadThumbImage(DefaultFastFileStorageClient.java:166) com.github.tobato.fastdfs.service.DefaultFastFileStorageClient.uploadImageAndCrtThumbImage(DefaultFastFileStorageClient.java:83) com.github.tobato.fastdfs.service.DefaultFastFileStorageClient.uploadImageAndCrtThumbImage(DefaultFastFileStorageClient.java:65) com.shiwaixiangcun.core.plugin.upload.impl.FastdfsFileServiceImpl.uploadImageAndCrtThumbImage(FastdfsFileServiceImpl.java:69) com.shiwaixiangcun.core.plugin.upload.impl.FastdfsFileServiceImpl.store(FastdfsFileServiceImpl.java:56) com.shiwaixiangcun.core.plugin.upload.impl.AbstractFileService.tempImageAndCrtThumbImage(AbstractFileService.java:127) com.shiwaixiangcun.core.plugin.upload.impl.AbstractFileService.tempImageAndCrtThumbImage(AbstractFileService.java:139) com.shiwaixiangcun.core.web.controller.UploadFileController.uploadImages(UploadFileController.java:129) com.shiwaixiangcun.core.web.controller.UploadFileController$$FastClassBySpringCGLIB$$752e37e5.invoke(&lt;generated&gt;) org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:721) org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:85) com.shiwaixiangcun.core.context.ControllerAspect.around(ControllerAspect.java:99) sun.reflect.GeneratedMethodAccessor249.invoke(Unknown Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) java.lang.reflect.Method.invoke(Method.java:498) org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:629) org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:618) org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:70) org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:656) com.shiwaixiangcun.core.web.controller.UploadFileController$$EnhancerBySpringCGLIB$$8d35bb21.uploadImages(&lt;generated&gt;) sun.reflect.GeneratedMethodAccessor706.invoke(Unknown Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) java.lang.reflect.Method.invoke(Method.java:498) org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205) org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133) org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:116) org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827) org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738) org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872) javax.servlet.http.HttpServlet.service(HttpServlet.java:661) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) javax.servlet.http.HttpServlet.service(HttpServlet.java:742) org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61) org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108) org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137) org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66) org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449) org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365) org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383) org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362) org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) com.shiwaixiangcun.core.filters.MonkeyCharacterEncodingFilter.doFilterInternal(MonkeyCharacterEncodingFilter.java:29) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:105) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) </pre> <p><b>Note</b> The full stack trace of the root cause is available in the server logs.</p> <hr class="line" /> <h3>Apache Tomcat/8.5.41</h3> </body> </html> 23000 22122 centos7 端口都开启了一直报错
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