java本地调用cmd，shell命令，远程调用Linux执行命令方法总结

本地调用cmd命令

@Test
public void testCmd()throws Exception{
String cmd="cmd /c date"; //命令的前面必须要有cmd /c
execCmd(cmd);
}

public static void execCmd(String cmd){
try{
Runtime rt = Runtime.getRuntime();
//执行命令, 最后一个参数，可以使用new File("path")指定运行的命令的位置
Process proc = rt.exec(cmd,null,null);
InputStream stderr =  proc.getInputStream();
InputStreamReader isr = new InputStreamReader(stderr,"GBK");
BufferedReader br = new BufferedReader(isr);
String line="";
while ((line = br.readLine()) != null) { // 打印出命令执行的结果
System.out.println(line);
}
}catch (Exception e){
e.printStackTrace();
}

}

本地调用Linux命令

@Test
public void testCmd()throws Exception{
String cmd="/bin/sh -c date"; //命令的前面必须要有/bin/sh -c
execCmd(cmd);

}

public static void execCmd(String cmd){
try{
Runtime rt = Runtime.getRuntime();
//执行命令, 最后一个参数，可以使用new File("path")指定运行的命令的位置
Process proc = rt.exec(cmd,null,null);
InputStream stderr =  proc.getInputStream();
InputStreamReader isr = new InputStreamReader(stderr,"GBK");
BufferedReader br = new BufferedReader(isr);
String line="";
while ((line = br.readLine()) != null) { // 打印出命令执行的结果
System.out.println(line);
}
}catch (Exception e){
e.printStackTrace();
}

}

远程调用Linux执行命令

http://central.maven.org/maven2/com/jcraft/jsch/0.1.54/jsch-0.1.54.jar

<dependency>
<groupId>com.jcraft</groupId>
<artifactId>jsch</artifactId>
<version>0.1.54</version>
</dependency>

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import com.jcraft.jsch.ChannelExec;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.JSchException;
import com.jcraft.jsch.Session;

public class SSHHelper {
/**
* 远程 执行命令并返回结果调用过程 是同步的（执行完才会返回）
* @param host  主机名
* @param user  用户名
* @param psw   密码
* @param port  端口
* @param command   命令
* @return
*/
public static String exec(String host,String user,String psw,int port,String command){
StringBuffer sb= new StringBuffer();
Session session =null;
ChannelExec openChannel =null;
try {
JSch jsch=new JSch();
session = jsch.getSession(user, host, port);
java.util.Properties config = new java.util.Properties();
config.put("StrictHostKeyChecking", "no");//跳过公钥的询问
session.setConfig(config);
session.setPassword(psw);
session.connect(5000);//设置连接的超时时间
openChannel = (ChannelExec) session.openChannel("exec");
openChannel.setCommand(command); //执行命令
int exitStatus = openChannel.getExitStatus(); //退出状态为-1，直到通道关闭
System.out.println(exitStatus);

// 下面是得到输出的内容
openChannel.connect();
InputStream in = openChannel.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
String buf = null;
while ((buf = reader.readLine()) != null) {
sb.append(buf+"\n");
}
} catch (JSchException | IOException e) {
sb.append(e.getMessage()+"\n");
}finally{
if(openChannel!=null&&!openChannel.isClosed()){
openChannel.disconnect();
}
if(session!=null&&session.isConnected()){
session.disconnect();
}
}
return sb.toString();
}

public static void main(String args[]){
String exec = exec("192.168.1.xx", "user", "name", 22, "ls");
System.out.println(exec);
}
}