在groovy脚本中执行外部程序并捕获输出

问题描述

我需要编写一个groovy脚本，该脚本正在执行一个外部程序并将该程序的输出打印到控制台.

I need to write a groovy script, that is executing a external program and print the output of that program to the console.

以下是有关代码段:

def pmdCommand = "${scriptDir}/run.sh pmd -d ${filesToAnalyse}"

def sout = new StringBuffer()
def serr = new StringBuffer()

def process = pmdCommand.execute()
process.consumeProcessOutput(sout, serr)
process.waitFor()
if (process.exitValue() !=0 ) {
    System.err << serr.toString()
    System.exit(-1)
}
else {
    System.out << sout.toString()
    System.exit(0)
}

我在Java中做了类似的事情，但是我无法将其翻译为groovy.

I did something similar in Java, but I can't translate it to groovy.

StringBuffer output = new StringBuffer();
String s = null;

try {
    Process p = Runtime.getRuntime().exec(command);
    p.waitFor();

    BufferedReader stdInput = new BufferedReader(new InputStreamReader(p.getInputStream()));
    BufferedReader stdError = new BufferedReader(new InputStreamReader(p.getErrorStream()));

    while ((s = stdInput.readLine()) != null) {
        System.out.println(s);
    }

    while ((s = stdError.readLine()) != null) {
        System.err.println(s);
    }

    System.exit(0);
}
catch (Exception e) {
    e.printStackTrace();
    System.exit(-1);
}

更新:我似乎waitFor()永远不会返回并阻止执行

Update: I seems the waitFor() never returns and blocks the execution

伊曼纽尔·罗莎(Emmanuel Rosa)提供的解决方案:

def pmdCommand = "/usr/src/app/lib/pmd/bin/run.sh pmd -d ${filesToAnalyse} -f codeclimate -R ${ruleset} -l apex -v 35"

def sout = new StringBuffer()
def serr = new StringBuffer()

def process = pmdCommand.execute()
process.consumeProcessOutput(sout, serr)
process.waitForProcessOutput()

System.out << sout.toString()
System.exit(0)

推荐答案

文档指出consumeProcessOutput() ...

到目前为止，一切都很好.这是重要的部分...

So far so good. Here's the important part...

解决方案...

所以您可以做的是将process.waitFor()替换为process.waitForProcessOutput().

So what you can do is replace process.waitFor() with process.waitForProcessOutput().

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