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tomcat部署时报错

发布于 2024-12-03 23:31:08 字数 8184 浏览 2 评论 0原文

我正在使用 tomcat 7.1，在 4,5 部署后，我收到以下错误：

SEVERE: Catalina.stop: java.net.SocketException: No buffer space available (maximum connections reached?): connect

然后我需要重新启动我的系统，因为发生此错误时我的互联网也停止工作。这个问题是如何引起的以及如何解决？

我刚刚又发现了这个问题，把日志贴出来。请帮我。

INFO [http-apr-8080-exec-14] (OrderDAO_MySqlImpl.java:287) - INSIDE THE ORDER DAO IMPL: SUBCAT IS: Cpmuter Services
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

Last packet sent to the server was 0 ms ago.
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:353)
    at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1074)
    at com.mysql.jdbc.Connection.createNewIO(Connection.java:2001)

    at com.mysql.jdbc.Connection.<init>(Connection.java:716)
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
    at sun.reflect.GeneratedConstructorAccessor33.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:353)
    at com.mysql.jdbc.Connection.getInstance(Connection.java:295)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:266)

    at java.sql.DriverManager.getConnection(DriverManager.java:582)
    at java.sql.DriverManager.getConnection(DriverManager.java:185)
    at bseller.Order.dao.mysql.OrderDAO_MySqlImpl.getConnection(OrderDAO_MySqlImpl.java:264)
    at bseller.Order.dao.mysql.OrderDAO_MySqlImpl.getAllOrder(OrderDAO_MySqlImpl.java:294)
    at bseller.postadd.utils.OrderControlService.getAllOrders(OrderControlService.java:33)
    at bseller.postadd.utils.OrderManager.PopulateOrderDetail(OrderManager.java:50)
    at org.apache.jsp.SubCategoryDeails_jsp._jspService(SubCategoryDeails_jsp.java:182)

    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:433)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684)
    at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:593)
    at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:530)
    at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:927)
    at org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:652)

    at org.apache.struts.tiles.TilesUtilImpl.doInclude(TilesUtilImpl.java:137)
    at org.apache.struts.tiles.TilesUtil.doInclude(TilesUtil.java:177)
    at org.apache.struts.taglib.tiles.InsertTag.doInclude(InsertTag.java:756)
    at org.apache.struts.taglib.tiles.InsertTag$InsertHandler.doEndTag(InsertTag.java:881)
    at org.apache.struts.taglib.tiles.InsertTag.doEndTag(InsertTag.java:473)
    at org.apache.jsp.Layout_jsp._jspx_meth_tiles_005finsert_005f1(Layout_jsp.java:244)
    at org.apache.jsp.Layout_jsp._jspService(Layout_jsp.java:137)

    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:433)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684)
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:471)
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:402)
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:329)
    at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1069)

    at org.apache.struts.tiles.TilesRequestProcessor.doForward(TilesRequestProcessor.java:274)
    at org.apache.struts.tiles.TilesRequestProcessor.processTilesDefinition(TilesRequestProcessor.java:254)
    at org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(TilesRequestProcessor.java:309)
    at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:279)
    at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
    at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)

    at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)

    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:851)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:405)
    at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:257)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:515)

    at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1764)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:619)
Caused by: java.net.SocketException: No buffer space available (maximum connections reached?): connect
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
    at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
    at java.net.Socket.connect(Socket.java:519)
    at java.net.Socket.connect(Socket.java:469)
    at java.net.Socket.<init>(Socket.java:366)
    at java.net.Socket.<init>(Socket.java:209)
    at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:168)
    at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:262)
    at com.mysql.jdbc.Connection.createNewIO(Connection.java:1926)
    ... 72 more
Sep 11, 2011 2:46:24 PM org.apache.catalina.core.ApplicationDispatcher invoke
SEVERE: Servlet.service() for servlet jsp threw exception
原文

I am working on tomcat 7.1, after 4,5 deployment I am getting following error:

SEVERE: Catalina.stop: java.net.SocketException: No buffer space available (maximum connections reached?): connect

Then I need to restart my system, because my internet also stopped working when this error happens. How is this problem caused and how can I solve it?

I just found the issue again, pasting the log. please help me.

INFO [http-apr-8080-exec-14] (OrderDAO_MySqlImpl.java:287) - INSIDE THE ORDER DAO IMPL: SUBCAT IS: Cpmuter Services
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

Last packet sent to the server was 0 ms ago.
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:353)
    at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1074)
    at com.mysql.jdbc.Connection.createNewIO(Connection.java:2001)

    at com.mysql.jdbc.Connection.<init>(Connection.java:716)
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
    at sun.reflect.GeneratedConstructorAccessor33.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:353)
    at com.mysql.jdbc.Connection.getInstance(Connection.java:295)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:266)

    at java.sql.DriverManager.getConnection(DriverManager.java:582)
    at java.sql.DriverManager.getConnection(DriverManager.java:185)
    at bseller.Order.dao.mysql.OrderDAO_MySqlImpl.getConnection(OrderDAO_MySqlImpl.java:264)
    at bseller.Order.dao.mysql.OrderDAO_MySqlImpl.getAllOrder(OrderDAO_MySqlImpl.java:294)
    at bseller.postadd.utils.OrderControlService.getAllOrders(OrderControlService.java:33)
    at bseller.postadd.utils.OrderManager.PopulateOrderDetail(OrderManager.java:50)
    at org.apache.jsp.SubCategoryDeails_jsp._jspService(SubCategoryDeails_jsp.java:182)

    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:433)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684)
    at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:593)
    at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:530)
    at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:927)
    at org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:652)

    at org.apache.struts.tiles.TilesUtilImpl.doInclude(TilesUtilImpl.java:137)
    at org.apache.struts.tiles.TilesUtil.doInclude(TilesUtil.java:177)
    at org.apache.struts.taglib.tiles.InsertTag.doInclude(InsertTag.java:756)
    at org.apache.struts.taglib.tiles.InsertTag$InsertHandler.doEndTag(InsertTag.java:881)
    at org.apache.struts.taglib.tiles.InsertTag.doEndTag(InsertTag.java:473)
    at org.apache.jsp.Layout_jsp._jspx_meth_tiles_005finsert_005f1(Layout_jsp.java:244)
    at org.apache.jsp.Layout_jsp._jspService(Layout_jsp.java:137)

    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:433)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684)
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:471)
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:402)
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:329)
    at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1069)

    at org.apache.struts.tiles.TilesRequestProcessor.doForward(TilesRequestProcessor.java:274)
    at org.apache.struts.tiles.TilesRequestProcessor.processTilesDefinition(TilesRequestProcessor.java:254)
    at org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(TilesRequestProcessor.java:309)
    at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:279)
    at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
    at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)

    at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)

    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:851)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:405)
    at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:257)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:515)

    at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1764)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:619)
Caused by: java.net.SocketException: No buffer space available (maximum connections reached?): connect
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
    at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
    at java.net.Socket.connect(Socket.java:519)
    at java.net.Socket.connect(Socket.java:469)
    at java.net.Socket.<init>(Socket.java:366)
    at java.net.Socket.<init>(Socket.java:209)
    at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:168)
    at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:262)
    at com.mysql.jdbc.Connection.createNewIO(Connection.java:1926)
    ... 72 more
Sep 11, 2011 2:46:24 PM org.apache.catalina.core.ApplicationDispatcher invoke
SEVERE: Servlet.service() for servlet jsp threw exception

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评论（2）

优雅的叶子 2024-12-10 23:31:08

java.net.SocketException：没有可用的缓冲区空间（已达到最大连接数？）：连接

用简单的英语来说，这是操作系统告诉您由于资源拥塞，它无法创建额外的 TCP 套接字。大多数操作系统对可以同时打开的连接数有硬性限制。您可能已经达到了该限制。

为了避免此类问题，数据库连接通常被池化，即保留连接以供将来对数据库的请求重用，而不是处置不再需要的连接。有很多连接池库。如果您从 JNDI 中映射的 DataSource 获取连接，大多数应用程序服务器也提供池功能。

另一个可能的原因是您在使用所有连接后没有关闭它们。

java.net.SocketException: No buffer space available (maximum connections reached?): connect

In plain english, this is the operating system telling you it can't create an additional TCP socket due to resource congestion. Most operating systems have a hard limit on how many connections can be open concurrently. It is possible you have hit that limit.

To avoid issues like that, database connections are usually pooled, i.e. rather than dispose of a no-longer needed connection, the connection is kept around, to be reused for future requests to the database. There are a lot of connection pooling libraries. Pooling capability is also provided by most application servers, if you obtain connections from a DataSource mapped in JNDI.

Another possible cause is that you are not closing all connections after you have used them.

回复 原文
醉城メ夜风 2024-12-10 23:31:08

您的应用程序是否直接使用套接字连接或数据库？也许您的应用程序创建了许多连接并且没有关闭它们。

您可以尝试输入cmd

netstat -a

并分析最常出现的外部地址，您是否知道它 - 检查它是数据库地址还是您熟悉的其他地址。

Does your application use directly socket connections or databases? Maybe your application creates many connections and does not close them.

You may try to enter in cmd

netstat -a

and analyze what foreign addres occurs most times and do you know it - check is it database address or sth else familiar to you.

回复 原文
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