从外部目录运行Shell脚本:没有此类文件或目录

Question

我有一个shell脚本文件,我想从java运行.我的java工作空间目录与脚本的目录不同.

private final String scriptPath = "/home/kemallin/Desktop/";

public void cleanCSVScript() {

    String script = "clean.sh";
    try {
        Process awk = new ProcessBuilder(scriptPath + script).start();
        awk.waitFor();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (InterruptedException e) {
        e.printStackTrace();
    }
}

我收到此错误:

java.io.IOException: Cannot run program "cat /home/kemallin/Desktop/capture-03.csv | awk -F ',' '{ print $1,",", $2,",", $3,",", $4,",", $6}' > clean.csv": error=2, No such file or directory
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1047)
at ShellScript.cleanCSVScript(ShellScript.java:21)
at Main.main(Main.java:15)
Caused by: java.io.IOException: error=2, No such file or directory
at java.lang.UNIXProcess.forkAndExec(Native Method)
at java.lang.UNIXProcess.<init>(UNIXProcess.java:186)
at java.lang.ProcessImpl.start(ProcessImpl.java:130)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1028)
... 2 more
java.io.FileNotFoundException: /home/kemallin/Desktop/clean.csv (No such file or directory)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:146)
at java.io.FileInputStream.<init>(FileInputStream.java:101)
at java.io.FileReader.<init>(FileReader.java:58)
at CSVReader.run(CSVReader.java:25)
at Main.main(Main.java:17)

我用google搜索它,每个解决方案都表明我做的是正确的.

我试图将脚本文件放在src和Java项目的bin中,但它仍然没有说这样的文件或目录.

我究竟做错了什么？

谢谢.

Answer 1

您的程序clean.sh不是Java可以理解的,即使底层系统将其理解为可执行文件也是如此.

您需要告诉Java执行命令所需的shell.做(假设您正在使用bash并安装在/bin/bash):

private final String scriptPath = "/home/kemallin/Desktop/";

public void cleanCSVScript() {

    String script = "clean.sh";
    try {
        Process awk = new ProcessBuilder("/bin/bash", scriptPath + script).start();
        awk.waitFor();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (InterruptedException e) {
        e.printStackTrace();
    }
}