从 Java 代码运行 shell 脚本
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Running a shell script from java code
提问by Dhirendra Panwar
I am almost dead trying to sort this out.. Can someone help... please?
试图解决这个问题我快要死了..有人可以帮忙吗...拜托？
Below is the code:
下面是代码：
import java.io.*;
import java.lang.Runtime;
import java.util.*;
public class WORKBRO {
public static void main(String args[])
{
try
{
String target = new String("/home/dhirendra.panwar/Desktop/test.sh");
Runtime rt = Runtime.getRuntime();
Process proc = rt.exec(target);
} catch (Throwable t)
{
t.printStackTrace();
}
}
}
采纳答案by hagrawal
Your code is right and I am sure you are not getting exceptions, if you read using proc.getErrorStream()you will not get anything.
Commands 100% get executed that way, having said that now thing is that you are echo'ing something and you need to read it back using BufferedReader.
你的代码是正确的，我相信你没有得到例外，如果你阅读 usingproc.getErrorStream()你不会得到任何东西。
命令 100% 以这种方式执行，已经说过现在你正在回显某些东西，你需要使用BufferedReader.
Check below example which will successfully create a directory called "stackOverflow" and print what you are echo'ing. For the putting it into a log file I am afraid that you can do it using ">", you may have to use some editor command or create file using Java.
检查下面的示例，它将成功创建一个名为“stackOverflow”的目录并打印您正在回显的内容。对于将其放入日志文件，恐怕您可以使用“>”来完成，您可能需要使用一些编辑器命令或使用 Java 创建文件。
Bottom line:Runtime.getRuntime().exec("command")is the correct and defined way to execute Unix commands or scripts from Java and it WORKS.
底线：Runtime.getRuntime().exec("command")是从 Java 执行 Unix 命令或脚本的正确且定义的方法，并且它有效。
test.sh
测试文件
#!/bin/bash
echo "hola"
mkdir stackOverflow
Test.java
测试.java
import java.io.*;
public class Test {
public static void main(String[] args) throws Exception {
try {
String target = new String("/home/hagrawal/test.sh");
// String target = new String("mkdir stackOver");
Runtime rt = Runtime.getRuntime();
Process proc = rt.exec(target);
proc.waitFor();
StringBuffer output = new StringBuffer();
BufferedReader reader = new BufferedReader(new InputStreamReader(proc.getInputStream()));
String line = "";
while ((line = reader.readLine())!= null) {
output.append(line + "\n");
}
System.out.println("### " + output);
} catch (Throwable t) {
t.printStackTrace();
}
}
}
