詹金斯管道在 GenericDownloadExecutor.java 处给出莫名其妙的 NullPointerException：52

Question

我按照本页给出的示例从 JFrog artifactory 下载工件： https://www.jfrog.com/confluence/display/JFROG/Scripted+Pipeline+Syntax#ScriptedPipelineSyntax-UploadingandDownloadingFiles

但我一直收到 NullPointerException。以下是脚本输出和错误：

[Pipeline] echo
download spec {
    "files": [
        {
            "pattern": "aod-libs-release/path-to-artifact/deployment/DM-DP-V3A.24-RELEASE/deployment-DM-DP-V3A.24-RELEASE.zip",
            "target": "./artifacts"
        }, {
            "pattern": "aod-libs-release/path-to-artifact/dm-auth-web-services/DM-AU-V3A.88-RELEASE/dm-auth-web-services-DM-AU-V3A.88-RELEASE.war",
            "target": "./artifacts"
        }
    ]
}
[Pipeline] echo
artifactory server org.jfrog.hudson.pipeline.common.types.ArtifactoryServer@66026154
[Pipeline] newBuildInfo
[Pipeline] artifactoryDownload
[Pipeline] End of Pipeline
java.lang.NullPointerException
    at org.jfrog.hudson.pipeline.common.executors.GenericDownloadExecutor.execute(GenericDownloadExecutor.java:52)
    at org.jfrog.hudson.pipeline.scripted.steps.DownloadStep$Execution.runStep(DownloadStep.java:67)
    at org.jfrog.hudson.pipeline.scripted.steps.DownloadStep$Execution.runStep(DownloadStep.java:53)
    at org.jfrog.hudson.pipeline.ArtifactorySynchronousNonBlockingStepExecution.run(ArtifactorySynchronousNonBlockingStepExecution.java:54)
    at org.jenkinsci.plugins.workflow.steps.SynchronousNonBlockingStepExecution.lambda$start[=11=](SynchronousNonBlockingStepExecution.java:47)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
Finished: FAILURE

下面是我的詹金斯管道脚本

def artifactoryServer = Artifactory.server("Artifactory-instance-id")
artifactoryServer.connection.timeout = 300
def artifactDownloadSpec = """{
    "files": [
        {
            "pattern": "aod-libs-release/path-to-artifact/deployment/${env.DP_VERSION}/deployment-${env.DP_VERSION}.zip",
            "target": "./artifacts"
        }, {
            "pattern": "aod-libs-release/path-to-artifact/dm-auth-web-services/${env.VERSION}/dm-auth-web-services-${env.VERSION}.war",
            "target": "./artifacts"
        }
    ]
}"""

echo "download spec " + artifactDownloadSpec
echo "artifactory server " + artifactoryServer
artifactoryServer.download spec: artifactDownloadSpec

我在谷歌上搜索了 GenericDownloadExecutor.java 并找到了以下代码，但无法弄清楚我缺少第 52 行所需的内容。好像有一个字段没有设置。

https://github.com/jenkinsci/artifactory-plugin/blob/master/src/main/java/org/jfrog/hudson/pipeline/common/executors/GenericDownloadExecutor.java

请帮忙。提前谢谢你，祝你有美好的一天。

Answer 1

运行 artifactoryServer.download 步骤需要使用代理。例如：

Jenkins 脚本管道

node {
  ...
  artifactoryServer.download spec: artifactDownloadSpec
  ...
}

Jenkins 声明式管道

推荐的方法是使用rtDownload步骤，但是，如果您仍然想使用artifactoryServer.download：

pipeline {
    agent any // <- Make sure there is an active agent
    stages {
        stage('Example') {
            steps {
                script {
                  ...
                  artifactoryServer.download spec: artifactDownloadSpec
                  ...
                }
            }
        }
    }
}

阅读更多：

Uploading and Downloading Files
Scripted pipeline example
Declarative pipeline example
Scripted pipeline inside declarative pipeline example - 不太推荐，但这个例子就像你的情况

詹金斯管道在 GenericDownloadExecutor.java 处给出莫名其妙的 NullPointerException：52

jenkins pipeline giving inexplicable NullPointerException at GenericDownloadExecutor.java: 52

nullpointerexception

artifactory

jenkins

jenkins-pipeline

jfrog