创建JSON，列出Groovy脚本中所有特定于Jenkins的环境变量

import groovy.json.JsonBuilder

def getJenkinsEnvVariables() {
    def envVars = [:]
    def build = Jenkins.instance.getItemByFullName(env.JOB_NAME).getBuildByNumber(env.BUILD_NUMBER)
    def buildVars = build.getBuildVariables()
    
    buildVars.each { key, value ->
        envVars[key] = value
    }
    
    return envVars
}

def generateJson() {
    def jenkinsEnvVars = getJenkinsEnvVariables()
    
    def json = new JsonBuilder()
    json {
        jenkinsEnvVars.each { key, value ->
            key(key)
            value(value)
        }
    }
    
    return json.toPrettyString()
}

def jsonOutput = generateJson()
println(jsonOutput)