groovy String.execute（）返回进程可能还在运行（取决于系统负载和天气））

如果您想等到进程结束，请执行以下操作：

  def txt =cmd / c dir c：\\.execute（）。with {
 def output = new StringWriter ）
 def error = new StringWriter（）
 //等待进程结束并捕获stderr和stdout 
 it.waitForProcessOutput（输出，错误）
 //检查没有错误
 assert error.toString（）。size（）== 0：$ error
 // println it.exitValue（）//我们可以检查错误代码
 //返回stdout from 
 return output.toString（）
} 
 

for jenkins pipeline 到避免错误 java.io.NotSerializableException
使用以下代码：

  def res = runAndWait（cmd / c dir c：\\）
 echo res 
} 

 @NonCPS 
 String runAndWait（Object cmd）{
 def proc = cmd.execute（）
 def output = new StringWriter（）
 def error = new StringWriter（）
 //等待为进程结束并捕获stderr和stdout 
 proc.waitForProcessOutput（输出，错误）
 //检查没有错误
 assert error.toString（）。trim（）。size（）= = 0：$ error
 //断言proc.exitValue（）== 0 //我们可以检查错误代码
 //从闭包返回stdout 
 return output.toString（ ）
} 

I am facing an issue which i do not understand, I have written a simple groovy script that when called from the command line works as expected

#!/usr/bin/env groovy

def jsonParse(def json) {
  new groovy.json.JsonSlurperClassic().parseText(json)
}

def ticketNumbers = ["MYSTATS-2695", "MYSTATS-2694"]

 ArrayList<String> jiraLinks = new ArrayList<String>();

  for(int i =0; i < ticketNumbers.size(); i++) {
    def jira_json = "curl -o /dev/null -X GET -H Content-Type: application/json --cert-type PEM --key-type PEM -E /Users/Jenkins/.jenkins/workspace/certificates/cert.pem --key /Users/Jenkins/.jenkins/workspace/certificates/cert.pem https://jira.dev.org.co.uk:443/rest/api/2/issue/${ticketNumbers[i]}".execute().text;
    def json = jsonParse(jira_json);
    def summary = json['fields']['summary'].toString();
    jiraLinks.add("[" + ticketNumbers[i] + "](https://jira.dev.org.co.uk/browse/" + ticketNumbers[i] + ")" + " - " + summary);
  }

 println "${jiraLinks}"

so when i do groovy myscript.groovy

This will print out

[[MYSTATS-2695 ](https://jira.dev.org.co.uk/browse/MYSTATS-2695 ) - Jenkins build pipeline should ignore draft and pre-releases, [MYSTATS-2694 ](https://jira.dev.org.co.uk/browse/MYSTATS-2694 ) - Android Jenkins pipeline should populate the comscore SDK version automatically]

So that is as expected.

What i then have is a groovy script which i call as part of a jenkins pipeline build

class Helpers {

   def jsonParse(def json) {
     new groovy.json.JsonSlurperClassic().parseText(json)
   }

  def createJiraLinks(def ticketNumbers) {

    ArrayList<String> jiraLinks = new ArrayList<String>();
    for(int i =0; i < ticketNumbers.size(); i++) {
      def jira_json = "/usr/bin/curl -o /dev/null -X GET -H Content-Type: application/json --cert-type PEM --key-type PEM -E /Users/Jenkins/.jenkins/workspace/certificates/cert.pem --key /Users/Jenkins/.jenkins/workspace/certificates/cert.pem https://jira.dev.org.co.uk:443/rest/api/2/issue/MYSTATS-2695".execute().text;
      def json = jsonParse(jira_json);
      def summary = json['fields']['summary'].toString();
    jiraLinks.add("[" + ticketNumbers[i] + "](https://jira.dev.org.co.uk/browse/" + ticketNumbers[i] + ")" + " - " + summary);
    }
    return jiraLinks;
  }

}
return new Helpers();

As part of my Jenkins build i have

def groovyMethod = load("${env.WORKSPACE}/groovy_scripts/release_pipeline.groovy")
def jira = groovyMethod.createJiraLinks(ticketNumberCommits);
echo "JIRA LINKAS ARE $jira"
// $jira is always returned as empty string

Am i misunderstanding anything here as i would have expected this to work? but it seems as if the curl request never gets anything back

Thanks

groovy String.execute() returns Process that could be still running (depends on system load and weather))

if you want to wait until process ended do like this:

def txt = "cmd /c dir c:\\".execute().with{
    def output = new StringWriter()
    def error = new StringWriter()
    //wait for process ended and catch stderr and stdout 
    it.waitForProcessOutput(output, error)
    //check there is no error
    assert error.toString().size()==0: "$error"
    //println it.exitValue() //we can do check with error code
    //return stdout from closure 
    return output.toString()
}

for jenkins pipeline to avoid error java.io.NotSerializableException use the following code:

node {
    def res = runAndWait("cmd /c dir c:\\")
    echo res
}

@NonCPS
String runAndWait(Object cmd){
    def proc = cmd.execute()
    def output = new StringWriter()
    def error = new StringWriter()
    //wait for process ended and catch stderr and stdout 
    proc.waitForProcessOutput(output, error)
    //check there is no error
    assert error.toString().trim().size()==0: "$error"
    //assert proc.exitValue()==0 //we can do check with error code
    //return stdout from closure 
    return output.toString()
}