小编moa*_*ley的帖子

运行 Jenkinsfile 测试，下一阶段返回UnsupportedOperationException: must specify $class with an implementation of interface java.util.List

stage('Checkout') {
    steps {
        checkout([$class: 'GitSCM', 
            branches: [name: '*/master'], 
            doGenerateSubmoduleConfigurations: false, 
            extensions: [[$class: 'CleanBeforeCheckout'], 
                [$class: 'RelativeTargetDirectory', relativeTargetDir: 'targetDir']], 
            submoduleCfg: [], 
            userRemoteConfigs: [[credentialsId: 'jenkinsserviceaccount',
                url: 'https://bitbucket.company.net/scm/moak/myTestRepo.git']]])
    }
}

为了在这里发布，我确实更改了一些名称，但上面的名称是使用 Jenkins 代码片段生成器创建的。您知道结帐时可能出现什么问题吗？

这是我在 Jenkins 控制台中看到的更多异常。

java.lang.UnsupportedOperationException: must specify $class with an implementation of interface java.util.List
    at org.jenkinsci.plugins.structs.describable.DescribableModel.resolveClass(DescribableModel.java:503)
    at org.jenkinsci.plugins.structs.describable.DescribableModel.coerce(DescribableModel.java:402)
    at org.jenkinsci.plugins.structs.describable.DescribableModel.buildArguments(DescribableModel.java:341)
    at org.jenkinsci.plugins.structs.describable.DescribableModel.instantiate(DescribableModel.java:282)
Caused: java.lang.IllegalArgumentException: Could not instantiate 
    {extensions=[{$class=CleanBeforeCheckout}, {$class=RelativeTargetDirectory, relativeTargetDir=stateStore}], 
    submoduleCfg=[], 
    userRemoteConfigs=[{credentialsId=jenkinsserviceaccount, url=https://bitbucket.hylandqa.net/scm/moak/hyland-statestore.git}], 
    doGenerateSubmoduleConfigurations=false, 
    branches={name=*/master}} 
for GitSCM(userRemoteConfigs: UserRemoteConfig(url: …