Java calls the shell script and obtains the example of the result set

/** * Run shell script * @param shell script required to run */public static void Execshell (String shell) {try {runtime RT = Runtime.getrunt IME (); rt.exec (shell);} catch (Exception e) {e.printstacktrace ();}} /** * Run Shell *  * @param shstr *            required to execute shell * @return * @throws ioexception */public static List Runshell (String s HSTR) throws Exception {list<string> strlist = new ArrayList (); Process process;process = Runtime.getruntime (). EXEC (new string[]{"/bin/sh", "-C", shstr},null,null); I Nputstreamreader ir = new InputStreamReader (Process.getinputstream ()); LineNumberReader input = new LineNumberReader (IR); String line;process.waitfor (); while (line = Input.readline ())! = null) {    strlist.add (line);} return strlist;}

Remotely log in to Linux and invoke the shell

First write a test script test.sh on the remote server and give the executable permission: chmod +x test.sh

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1. #!/bin/bash
2. Echo ' test22 '
3. echo $

$ $ is the first parameter passed in the script, and our console prints this parameter

To create a new MAVEN project, add dependencies:

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2. <dependency>
4. <groupId>org.jvnet.hudson</groupId>
6. <artifactid>ganymed-ssh2</artifactid>
8. <version>build210-hudson-1</version>
10. </Dependency>

Write a tool class:

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2. Package Com.xj.runshell;
6. Import java.io.IOException;
8. Import Java.io.InputStream;
10. Import Java.nio.charset.Charset;
14. Import ch.ethz.ssh2.Connection;
16. Import ch.ethz.ssh2.Session;
20. Public class Remoteshelltool {
24. private Connection Conn;
26. private String ipaddr;
28. private String charset = Charset.defaultcharset (). toString ();
30. private String UserName;
32. private String password;
36. Public Remoteshelltool (string ipaddr, String userName, string password,
38. String CharSet) {
40. this.ipaddr = ipaddr;
42. this.username = userName;
44. This.password = password;
46. if (charset! = null) {
48. This.charset = CharSet;
50. }
52. }
56. Public Boolean login () throws IOException {
58. conn = new Connection (IPADDR);
60. Conn.connect (); //Connection
62. return Conn.authenticatewithpassword (userName, password); //Certification
64. }
68. Public string Exec (string cmds) {
70. InputStream in = null;
72. String result = "";
74. try {
76. if (this.login ()) {
78. Session session = Conn.opensession (); //Open a session
80. Session.execcommand (CMDS);
84. in = Session.getstdout ();
86. result = This.processstdout (in, this.charset);
88. Session.close ();
90. Conn.close ();
92. }
94. } catch (IOException E1) {
96. E1.printstacktrace ();
98. }
100. return result;
102. }
106. Public String Processstdout (InputStream in, String charset) {
110. byte[] buf = new byte[1024];
112. StringBuffer sb = new StringBuffer ();
114. try {
116. While (In.read (BUF)! =-1) {
118. Sb.append (new String (BUF, CharSet));
120. }
122. } catch (IOException e) {
124. E.printstacktrace ();
126. }
128. return sb.tostring ();
130. }
134. /** 
136. * @param args
138. */
140. public static void Main (string[] args) {
144. Remoteshelltool tool = new Remoteshelltool ("192.168.27.41", "Hadoop",
146. " Hadoop", "Utf-8");
150. String result = Tool.exec ("./test.sh Xiaojun");
152. System.out.print (result);
156. }
160. }

The main function executes the./test.sh Xiaojun This command, the console prints out:

test22

Xiaojun

Java calls the shell script and obtains the example of the result set