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java执行linux shell命令,并拿到返回值
1 package com.suning.spc.util; 2 3 import java.io.IOException; 4 import java.io.InputStream; 5 import java.nio.charset.Charset; 6 7 import org.slf4j.Logger; 8 import org.slf4j.LoggerFactory; 9 10 import ch.ethz.ssh2.ChannelCondition; 11 import ch.ethz.ssh2.Connection; 12 import ch.ethz.ssh2.Session; 13 import ch.ethz.ssh2.StreamGobbler; 14 15 public class RmtShellExecutor { 16 17 private static final Logger LOG = LoggerFactory.getLogger(RmtShellExecutor.class); 18 19 private Connection conn; 20 private String ip; 21 private String usr; 22 private String psword; 23 private String charset = Charset.defaultCharset().toString(); 24 25 private static final int TIME_OUT = 1000 * 5 * 60; 26 27 public RmtShellExecutor(String ip, String usr, String ps) { 28 this.ip = ip; 29 this.usr = usr; 30 this.psword = ps; 31 } 32 33 private boolean login() throws IOException { 34 conn = new Connection(ip); 35 conn.connect(); 36 return conn.authenticateWithPassword(usr, psword); 37 } 38 39 public String exec(String cmds) throws IOException { 40 InputStream stdOut = null; 41 InputStream stdErr = null; 42 String outStr = ""; 43 String outErr = ""; 44 int ret = -1; 45 46 try { 47 if (login()) { 48 Session session = conn.openSession(); 49 session.execCommand(cmds); 50 stdOut = new StreamGobbler(session.getStdout()); 51 outStr = processStream(stdOut, charset); 52 LOG.info("caijl:[INFO] outStr=" + outStr); 53 stdErr = new StreamGobbler(session.getStderr()); 54 outErr = processStream(stdErr, charset); 55 LOG.info("caijl:[INFO] outErr=" + outErr); 56 session.waitForCondition(ChannelCondition.EXIT_STATUS, TIME_OUT); 57 ret = session.getExitStatus(); 58 59 } else { 60 LOG.error("caijl:[INFO] ssh2 login failure:" + ip); 61 throw new IOException("SSH2_ERR"); 62 } 63 64 } finally { 65 if (conn != null) { 66 conn.close(); 67 } 68 if (stdOut != null) 69 stdOut.close(); 70 if (stdErr != null) 71 stdErr.close(); 72 } 73 74 return outStr; 75 } 76 77 private String processStream(InputStream in, String charset) throws IOException { 78 byte[] buf = new byte[1024]; 79 StringBuilder sb = new StringBuilder(); 80 while (in.read(buf) != -1) { 81 sb.append(new String(buf, charset)); 82 } 83 return sb.toString(); 84 } 85 86 public static void main(String[] args) { 87 88 String usr = "root"; 89 String password = "12345"; 90 String serverIP = "11.22.33.xx"; 91 String shPath = "/root/ab.sh"; 92 93 RmtShellExecutor exe = new RmtShellExecutor(serverIP, usr, password); 94 95 String outInf; 96 97 try { 98 outInf = exe.exec("sh " + shPath + " xn"); 99 System.out.println("outInf= " + outInf);100 } catch (IOException e) {101 e.printStackTrace();102 }103 }104 105 }
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