java Shell脚本和java参数

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时间:2020-10-31 01:38:37  来源:igfitidea点击:

Shell script and java parameter

javashellunixcommand-line-arguments

提问by Arnaud

I have written the script run.shbelow for calling a java class :

我编写了下面的脚本run.sh来调用 java 类:

java -cp . Main    

Here is my java class (it just displays the args) :

这是我的 java 类(它只显示参数):

public class Main {
    public static void main(String[] args) {
        for (String arg : args) {
            System.out.println(arg);
        }
    }
}

This is working unless I try to pass a parameter containing a space. For example :

除非我尝试传递包含空格的参数,否则这是有效的。例如 :

./run.sh This is "a test"

will display :

将显示:

This
is
a
test

How could I modify my shell script and/or change my parameter syntax to pass the parameter "a test" unmodified ?

我如何修改我的 shell 脚本和/或更改我的参数语法以传递未修改的参数“测试”?

回答by Ignacio Vazquez-Abrams

Like this:

像这样:

java -cp . Main "$@"

回答by user unknown

You have to mask every parameter in the script as well:

您还必须屏蔽脚本中的每个参数:

java -cp . Main "" "" "" ""

Now parameter 4 should be empty, and $3 should be "a test".

现在参数 4 应该是空的,$3 应该是“一个测试”。

To verify, try:

要验证,请尝试:

#!/bin/bash
echo 1 ""
echo 2 ""
echo 3 ""
echo 4 ""
echo all "$@"

and call it

并称之为

./params.sh This is "a test" 
1 This
2 is
3 a test
4 
all This is a test