Shell 脚本 —— java 代码远程调用shell脚本重启 tomcat

个人博客网：https://wushaopei.github.io/    (你想要这里多有)

1、创建maven 工程

​

maven 依赖：

        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>2.1</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-api -->

        <!-- https://mvnrepository.com/artifact/junit/junit -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-test -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>5.0.13.RELEASE</version>
            <scope>test</scope>
        </dependency>
        <!-- https://mvnrepository.com/artifact/logutil/logutil -->

        <!-- https://mvnrepository.com/artifact/org.apache.logging.log4j/log4j-core -->
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-core</artifactId>
            <version>2.11.1</version>
        </dependency>

2、创建 RemoteShellExecutor. java  文件用于远程连接Linux 服务器

package com.webcode.cn;

import ch.ethz.ssh2.ChannelCondition;
import ch.ethz.ssh2.Session;
import ch.ethz.ssh2.StreamGobbler;
import org.apache.commons.io.IOUtils;
import ch.ethz.ssh2.Connection;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;

public class RemoteShellExecutor {
    private Connection conn;
       /** 远程机器IP */
               private String ip;
       /** 用户名 */
               private String osUsername;
       /** 密码 */
               private String password;
       private String charset = Charset.defaultCharset().toString();

               private static final int TIME_OUT = 1000 * 5 * 60;

               /**
         * 构造函数
         * @param ip
         * @param usr
         * @param pasword
         */
               public RemoteShellExecutor(String ip, String usr, String pasword) {
                   this.ip = ip;
                  this.osUsername = usr;
                  this.password = pasword;
              }

               /**
        * 登录
        * @return
        * @throws IOException
        */
               private boolean login() throws IOException {
                  conn = new Connection(ip);
                 conn.connect();
                  return conn.authenticateWithPassword(osUsername, password);
              }

               /**
        * 执行脚本
        *
       * @param cmds
        * @return
        * @throws Exception
        */
               public int exec(String cmds) throws Exception {
                  InputStream stdOut = null;
                  InputStream stdErr = null;
                  String outStr = "";
                  String outErr = "";
                  int ret = -1;
                  try {
                      if (login()) {
                              // Open a new {@link Session} on this connection
                              Session session = conn.openSession();
                          // Execute a command on the remote machine.
                              session.execCommand(cmds);

                              stdOut = new StreamGobbler(session.getStdout());
                              outStr = processStream(stdOut, charset);

                              stdErr = new StreamGobbler(session.getStderr());
                              outErr = processStream(stdErr, charset);

                              session.waitForCondition(ChannelCondition.EXIT_STATUS, TIME_OUT);

                              System.out.println("outStr=" + outStr);
                              System.out.println("outErr=" + outErr);

                              ret = session.getExitStatus();
                          } else {
                              throw new Exception("登录远程机器失败" + ip); // 自定义异常类 实现略
                          }
                      } finally {
                          if (conn != null) {
                                  conn.close();
                              }
                          IOUtils.closeQuietly(stdOut);
                          IOUtils.closeQuietly(stdErr);
                      }
                  return ret;
              }

               /**
        * @param in
        * @param charset
        * @return
        * @throws IOException
        * @throws UnsupportedEncodingException
        */
               private String processStream(InputStream in, String charset) throws Exception {
                  byte[] buf = new byte[1024];
                  StringBuilder sb = new StringBuilder();
                  while (in.read(buf) != -1) {
                          sb.append(new String(buf, charset));
                      }
                  return sb.toString();
              }

             public static void main(String args[]) throws Exception {
                 RemoteShellExecutor executor = new RemoteShellExecutor("192.168.2xx.118", "root", "15989xxxxxx***");
                 // 执行myTest.sh 参数为java Know dummy
                 System.out.println(executor.exec("/home/wenmin/kill-tomcat.sh"));
             }

}

3、在Linux  /home/wenmin 目录下创建 kill-tomcat.sh  脚本文件

#!/bin/bash

#kill tomcat pid

pidlist=`ps -ef|grep apache-tomcat-7.0.75|grep -v "grep"|awk '{print $2}'`  #找到tomcat的PID号

echo "tomcat Id list :$pidlist"  //显示pid

kill -9 $pidlist  #杀掉改进程

echo "KILL $pidlist:" //提示进程以及被杀掉

echo "service stop success"

echo "start tomcat"

cd /opt/apache-tomcat-7.0.75

pwd

rm -rf work/*

cd bin

./startup.sh #;tail -f ../logs/catalina.out

4、执行 main  方法

J:\folder\JDK1.8\bin\java -javaagent:J:\P2C\ideaIU-2017.2.win\lib\idea_rt.jar=62052:J:\P2C\ideaIU-2017.2.win\bin -Dfile.encoding=UTF-8 -classpath J:\folder\JDK1.8\jre\lib\charsets.jar;J:\folder\JDK1.8\jre\lib\deploy.jar;J:\folder\JDK1.8\jre\lib\ext\access-bridge-64.jar;J:\folder\JDK1.8\jre\lib\ext\cldrdata.jar;J:\folder\JDK1.8\jre\lib\ext\dnsns.jar;J:\folder\JDK1.8\jre\lib\ext\jaccess.jar;J:\folder\JDK1.8\jre\lib\ext\jfxrt.jar;J:\folder\JDK1.8\jre\lib\ext\localedata.jar;J:\folder\JDK1.8\jre\lib\ext\nashorn.jar;J:\folder\JDK1.8\jre\lib\ext\sunec.jar;J:\folder\JDK1.8\jre\lib\ext\sunjce_provider.jar;J:\folder\JDK1.8\jre\lib\ext\sunmscapi.jar;J:\folder\JDK1.8\jre\lib\ext\sunpkcs11.jar;J:\folder\JDK1.8\jre\lib\ext\zipfs.jar;J:\folder\JDK1.8\jre\lib\javaws.jar;J:\folder\JDK1.8\jre\lib\jce.jar;J:\folder\JDK1.8\jre\lib\jfr.jar;J:\folder\JDK1.8\jre\lib\jfxswt.jar;J:\folder\JDK1.8\jre\lib\jsse.jar;J:\folder\JDK1.8\jre\lib\management-agent.jar;J:\folder\JDK1.8\jre\lib\plugin.jar;J:\folder\JDK1.8\jre\lib\resources.jar;J:\folder\JDK1.8\jre\lib\rt.jar;J:\IDEA_Work_Space\shell-java\target\classes;C:\Users\wushaopei\.m2\repository\org\jvnet\hudson\ganymed-ssh2\build210-hudson-1\ganymed-ssh2-build210-hudson-1.jar;C:\Users\wushaopei\.m2\repository\commons-io\commons-io\2.1\commons-io-2.1.jar;C:\Users\wushaopei\.m2\repository\org\apache\logging\log4j\log4j-core\2.11.1\log4j-core-2.11.1.jar;C:\Users\wushaopei\.m2\repository\org\apache\logging\log4j\log4j-api\2.11.1\log4j-api-2.11.1.jar com.webcode.cn.RemoteShellExecutor
outStr=tomcat Id list :14141 //显示pid
KILL 14141: //提示进程以及被杀掉
service stop success
start tomcat
/opt/apache-tomcat-7.0.75
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Using CATALINA_BASE:   /opt/apache-tomcat-7.0.75
Using CATALINA_HOME:   /opt/apache-tomcat-7.0.75
tart tomcat
/opt/apache-tomcat-7.0.75
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Using CATALINA_TMPDIR: /opt/apache-tomcat-7.0.75/temp
 CATALINA_HOME:   /opt/apache-tomcat-7.0.75
tart tomcat
/opt/apache-tomcat-7.0.75
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Using JRE_HOME:        /usr
Using CLASSPATH:       /opt/apache-tomcat-7.0.75/bin/bootstrap.jar:/opt/apache-tomcat-7.0.75/bin/tomcat-juli.jar
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   Tomcat started.
       /usr
Using CLASSPATH:       /opt/apache-tomcat-7.0.75/bin/bootstrap.jar:/opt/apache-tomcat-7.0.75/bin/tomcat-juli.jar

outErr=
0

Process finished with exit code 0