CENTOS 7 中报错 java.net.ConnectException Connection

再centos7 中正常启动tomcat 9，但是发现项目都不能正常访问，去关闭tomcat 却报错，如下：

[root@localhost ~]# /opt/apache-tomcat-9.0.0.M22/bin/shutdown.sh 
Using CATALINA_BASE:   /opt/apache-tomcat-9.0.0.M22
Using CATALINA_HOME:   /opt/apache-tomcat-9.0.0.M22
Using CATALINA_TMPDIR: /opt/apache-tomcat-9.0.0.M22/temp
Using JRE_HOME:        /opt/jdk1.8.0_131/jre
Using CLASSPATH:       /opt/apache-tomcat-9.0.0.M22/bin/bootstrap.jar:/opt/apache-tomcat-9.0.0.M22/bin/tomcat-juli.jar
十月 12, 2017 7:08:00 下午 org.apache.catalina.startup.Catalina stopServer
严重: Could not contact [localhost:[8005]]. Tomcat may not be running.
十月 12, 2017 7:08:00 下午 org.apache.catalina.startup.Catalina stopServer
严重: Catalina.stop: 
java.net.ConnectException: 拒绝连接 (Connection refused)
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
        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 java.net.Socket.<init>(Socket.java:434)
        at java.net.Socket.<init>(Socket.java:211)
        at org.apache.catalina.startup.Catalina.stopServer(Catalina.java:478)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.apache.catalina.startup.Bootstrap.stopServer(Bootstrap.java:408)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:497)

发现这种奇怪的问题，去检查端口，发现根本没有tomcat进程的端口：

[root@localhost bin]#  netstat -tnlp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 0.0.0.0:22122           0.0.0.0:*               LISTEN      63455/fdfs_trackerd 
tcp        0      0 0.0.0.0:3690            0.0.0.0:*               LISTEN      2855/svnserve       
tcp        0      0 0.0.0.0:6379            0.0.0.0:*               LISTEN      127481/redis-server 
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1396/sshd           
tcp        0      0 0.0.0.0:5432            0.0.0.0:*               LISTEN      183014/postgres     
tcp        0      0 0.0.0.0:23000           0.0.0.0:*               LISTEN      64278/fdfs_storaged 
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      2229/master         
tcp        0      0 0.0.0.0:8001            0.0.0.0:*               LISTEN      98427/mosquitto     
tcp        0      0 0.0.0.0:8002            0.0.0.0:*               LISTEN      72040/nginx: master 
tcp        0      0 0.0.0.0:8004            0.0.0.0:*               LISTEN      109896/vsftpd       
tcp6       0      0 :::8009                 :::*                    LISTEN      104964/java         
tcp6       0      0 :::6379                 :::*                    LISTEN      127481/redis-server 
tcp6       0      0 :::22                   :::*                    LISTEN      1396/sshd           
tcp6       0      0 :::5432                 :::*                    LISTEN      183014/postgres     
tcp6       0      0 ::1:25                  :::*                    LISTEN      2229/master      
tcp6       0      0 :::8001                 :::*                    LISTEN      98427/mosquitto     
tcp6       0      0 127.0.0.1:8005          :::*                    LISTEN      104964/java  

只好重新启动但是，还是启动后，还是没成功访问到项目，日志里也看不到什么多余的错误信息。

只好把项目删除了，再去启动tomcat，启动成功后，再去把war 包丢进webapps中，发现项目居然能成功访问，搞半天，没搞明白，估计还是项目有点问题，不能正常启动，直接把tomcat 弄死了。先记录下，以后有时间深入了解下。。

启动：

[root@localhost bin]# startup.sh              
Using CATALINA_BASE:   /opt/apache-tomcat-9.0.0.M22
Using CATALINA_HOME:   /opt/apache-tomcat-9.0.0.M22
Using CATALINA_TMPDIR: /opt/apache-tomcat-9.0.0.M22/temp
Using JRE_HOME:        /opt/jdk1.8.0_131/jre
Using CLASSPATH:       /opt/apache-tomcat-9.0.0.M22/bin/bootstrap.jar:/opt/apache-tomcat-9.0.0.M22/bin/tomcat-juli.jar
Tomcat started.

监视端口进程：

[root@localhost bin]# netstat -tnlp|grep 8000
tcp6       0      0 :::8000                 :::*                    LISTEN      104964/java