SSH项目，写好了编译好的文件丢在tomcat解压版下面然后startup启动，总是隔几天会报断开连接的错误然后就必须要重启tomcat，有大佬知道是什么引起的

[OnlyYou1234]

这是在日志里面看到的报错信息
七月 16, 2018 2:44:50 下午 org.apache.catalina.startup.Catalina stopServer
严重: Catalina.stop:
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: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 java.net.Socket.<init>(Socket.java:425)
at java.net.Socket.<init>(Socket.java:208)
at org.apache.catalina.startup.Catalina.stopServer(Catalina.java:422)
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.apache.catalina.startup.Bootstrap.stopServer(Bootstrap.java:338)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:416)

七月 16, 2018 2:45:02 下午 org.apache.catalina.startup.Catalina stopServer
严重: Catalina.stop:
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: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 java.net.Socket.<init>(Socket.java:425)
at java.net.Socket.<init>(Socket.java:208)
at org.apache.catalina.startup.Catalina.stopServer(Catalina.java:422)
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.apache.catalina.startup.Bootstrap.stopServer(Bootstrap.java:338)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:416)

七月 16, 2018 2:45:07 下午 org.apache.catalina.core.AprLifecycleListener init
信息: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jdk1.7.0_79\bin;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\Program Files (x86)\Intel\iCLS Client\;C:\Program Files\Intel\iCLS Client\;C:\windows\system32;C:\windows;C:\windows\System32\Wbem;C:\windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Program Files\Java\jdk1.7.0_79\bin;C:\Program Files\Java\jdk1.7.0_79\jre\bin;C:\Program Files\MySQL\MySQL Server 5.5\bin;;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\WINDOWS\System32\OpenSSH\;C:\Users\aaa\AppData\Local\Microsoft\WindowsApps;;.
七月 16, 2018 2:45:07 下午 org.apache.coyote.http11.Http11Protocol init
信息: Initializing Coyote HTTP/1.1 on http-8080
七月 16, 2018 2:45:07 下午 org.apache.catalina.startup.Catalina load
信息: Initialization processed in 1598 ms
七月 16, 2018 2:45:07 下午 org.apache.catalina.core.StandardService start
信息: Starting service Catalina
七月 16, 2018 2:45:07 下午 org.apache.catalina.core.StandardEngine start
信息: Starting Servlet Engine: Apache Tomcat/6.0.35
七月 16, 2018 2:45:07 下午 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory srproject
七月 16, 2018 2:45:08 下午 org.apache.catalina.loader.WebappClassLoader validateJarFile
信息: validateJarFile(D:\apache-tomcat-6.0.35\webapps\srproject\WEB-INF\lib\servlet.jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class
七月 16, 2018 2:45:08 下午 org.apache.catalina.core.StandardContext addApplicationListener
信息: The listener "org.springframework.web.context.ContextLoaderListener" is already configured for this context. The duplicate definition has been ignored.
七月 16, 2018 2:45:20 下午 org.apache.coyote.http11.Http11Protocol start
信息: Starting Coyote HTTP/1.1 on http-8080
七月 16, 2018 2:45:20 下午 org.apache.jk.common.ChannelSocket init
信息: JK: ajp13 listening on /0.0.0.0:8009
七月 16, 2018 2:45:20 下午 org.apache.jk.server.JkMain start
信息: Jk running ID=0 time=0/20 config=null
七月 16, 2018 2:45:20 下午 org.apache.catalina.startup.Catalina start
信息: Server startup in 13052 ms

[奔跑的小鱼儿]

第一个要做的是看你的host和port是否写错了，如 [ 127.00.1:8080 ]
第二个要看你的server是否真正的运行起来了，比如server在启动过程某些组件加载异常，会导致服务启动不成功。
第三个有可能是防火墙的原因，关闭防火墙试试
第四个就是如果你是自己写的socket那么检查如下：

//使用不带有host的InterSocketAddress
socket.bind(new InetSocketAddress(port));
//而不是使用它
socket.bind(new InetSocketAddress(host,port));

//当bind操作带有host时，只能通过指定host加端口访问，否则会抛出异常
java.net.ConnectException: Connection refused: no further information