Java远程调用shell脚本（项目实战）

前言

Java远程调用shell脚本，需要用到SSH建立链接（类似于xshell连接linux），然后再根据合法的参数进行shell脚本调用

1 首先，从业务层开始，我这里实现重传脚本的业务，代码如下.

  //重传
   public String reUpload(Upload upload) throws Exception{
       Map<String,Object> param = new HashMap<String,Object>();
       param.put("fileId", upload.getFileId());
       String procedureCode = daliyRunLogMapper.getProcedureCode(param);
       if(procedureCode == null || "".equals(procedureCode)){
           return "1";
       }else{
           String time = upload.getDateTime();
           String fileId = upload.getFileId();
           String path = " /asiainfo/aiadmin/jtcollection/onlineCompaniesNew/shell/day/upload_sd_main.sh";
           String shellParams = path+" "+time+" "+fileId+" "+procedureCode;
           shellExecutor.exec(shellParams);
           return "0";
       }
   }

红色标记需要所传参数，路径，时间，等等，根据各自业务而定。

2 接着，新建一个公共CommonShellExecutor.class ，代码如下

import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.Charset;

import org.apache.commons.io.IOUtils;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

import ch.ethz.ssh2.ChannelCondition;
import ch.ethz.ssh2.Connection;
import ch.ethz.ssh2.Session;
import ch.ethz.ssh2.StreamGobbler;

@Component
public class CommonShellExecutor {

   @Value("${shadow.ksh.server.ip}")
   private String ip;
   // private String ip ="10.109.1.142";
@Value("${shadow.ksh.server.username}")
private String osUsername;
// private String osUsername ="aiadmin";
@Value("${shadow.ksh.server.password}")
private String password;
// private String password = "gAD9$SFT";
private String charset = Charset.defaultCharset().toString();
private Connection conn;
private static final int TIME_OUT = 1000 * 5 * 60;

private boolean login() throws IOException {
conn = new Connection(ip);
conn.connect();//建立连接
return conn.authenticateWithPassword(osUsername, password);//根据用户名密码，进行校验
}

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;
}

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();
}

}

Java远程调用shell脚本（项目实战）

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