JSch通过代理机访问服务器并执行命令

爱被打了一巴掌 2022-12-29 12:47 222阅读 0赞

## JSch通过代理机访问服务器并执行命令 ##

#### maven jar包新增 ####

```java
    		
            <dependency>
                <groupId>com.jcraft</groupId>
                <artifactId>jsch</artifactId>
                <version>0.1.53</version>
            </dependency>
    ```

#### 功能实现 ####

```java
    import com.jcraft.jsch.*;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    
    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.util.Objects;
    
    /**
     * <功能简要> <br>
     * <ssh服务端连接工具>
     * 通过JSch实现通过代理机访问服务器，执行一条命令输出命令执行结果
     *
     * @Author heyanbo
     * @createTime 2020/12/22 16:14
     * @since
     */
    public class JSchUtils {
    
        private static Logger LOGGER = LoggerFactory.getLogger(JSchUtils.class);
    
        public static final String PROXY_HOST="";
        public static final int PROXY_PORT=111;
        public static final String HOST_USER="root";
        public static final String HOST_IP="";
        public static final int HOST_PORT=22;
        public static final String HOST_PASSWORD="12345";
    
        public static void main(String[] args) {
    
            BufferedReader bufferedReader = null;
            Session session = null;
            Channel channel = null;
            ChannelExec channelExec = null;
    
            try {
                //JSch 创建session建立连接
                JSch jSch = new JSch();
                session = jSch.getSession(HOST_USER, HOST_IP, HOST_PORT);
                session.setPassword(HOST_PASSWORD);
                //设置公认密钥确认级别,安全的内网坏境使用
                session.setConfig("StrictHostKeyChecking","no");
                //设置代理服务器
                ProxyHTTP proxyHTTP = new ProxyHTTP(PROXY_HOST, PROXY_PORT);
                //proxyHTTP.setUserPasswd("","");
                session.setProxy(proxyHTTP);
                session.connect(10000);
    
                //打开一个通道，设置通道类型以及要执行命令的类型
                channel = session.openChannel("exec");
                channelExec = (ChannelExec)channel;
    
                //设置登录到物理机后要执行的命令,单条命令
                channelExec.setCommand("ipmcget -d healthevents");
                channelExec.setInputStream(null);
    
                //获取命令执行结果
                bufferedReader = new BufferedReader(new InputStreamReader(channelExec.getInputStream()));
                channelExec.connect(10000);
    
                String line;
                while ((line = bufferedReader.readLine())!=null){
                    LOGGER.info(line.trim());
                }
            }catch (Exception e){
                LOGGER.error("查询物理机健康事件异常",e);
            }finally {
                if (Objects.nonNull(bufferedReader)){
                    try {
                        bufferedReader.close();
                    }catch (IOException io){
                        LOGGER.error("Io流关闭异常",io);
                    }
                }
                if (Objects.nonNull(channelExec)){
                    channelExec.disconnect();
                }
                if (Objects.nonNull(channel)){
                    channel.disconnect();
                }
                if (Objects.nonNull(session)){
                    session.disconnect();
                }
            }
        }
    }
    ```