Gitlab触发jenkins并获取项目post参数

jenkins -- Generic Webhook Trigger插件

此插件是git webhook的高阶应用，安装后会暴露出来一个公共API，GWT插件接收到 JSON 或 XML 的 HTTP POST 请求后，根据我们配置的规则决定触发哪个Jenkins项目。
定义需要的变量

此插件有两种配置方式

1.图形界面配置-创建流水线任务在触发器中配置（本文不采用此法）

2.pipeline 脚本中配置-注意此方法需要手动触发一次构建任务生成 Generic Webhook Trigger配置

jenkins配置

1.安装插件

勾选Generic Webhook Trigger后，点击【Install without restart】安装插件。

2.创建Jenkins任务

在Jenkins Dashboard中，点击【新建任务】

输入任务名称，选择流水线类型后，点击确定创建任务。

点击刚才创建好的任务。

点击【配置】。

选择【流水线】。

3.pipeline内容

pipeline {
    agent any
    riggers{
        GenericTrigger(
            genericVariables:[
                [key:'event_name',value:'$.event_name'],   //触发动作  pubat or tag_pubat
                [key:'user_email',value:'$.user_email'],   //GitLab公共邮箱需要自行配置否则获取不到
                [key:'project_name',value:'$.project.name'],      //项目名称 DevOps_Test
                [key:'git_url',value:'$.project.git_http_url'],    //git_url http://xxx.xxx.xxx/devops/DevOps_Test.git
                [key:'ref',value:'$.ref'],                 //分支或tag信息
                [key:'group_name',value:'$.project.namespace'], //GITLAB_GROUP
                [key:'commits_id',value:'$.commits[0].id'] //gitlab commits id
            ],
            token:"qazwsx",   //gitlab webhook触发token 多个任务配置同一个token会一起触发
            causeString:'Triggered on $ref',
            printContributedVariables:true,
            printPostContent:true
        )
    }

    stages {
        stage('Hello') {
            steps {
                echo 'Hello World'
            }
        }
    }
}

gitlab传递的post数据是json格式

{
  "object_kind": "push",
  "event_name": "push",
  "before": "a2e3c8d96b30967da1fa9579096d52c2b3757d2a",
  "after": "9ff547f1010f40c54aefe693d32c026cfc7d8f4d",
  "ref": "refs/heads/master",
  "checkout_sha": "9ff547f1010f40c54aefe693d32c026cfc7d8f4d",
  "message": null,
  "user_id": 324,
  "user_name": "h_y",
  "user_username": "h_y",
  "user_email": "",
  "user_avatar": null,
  "project_id": 3199,
  "project": {
    "id": 3199,
    "name": "hello",
    "description": "",
    "web_url": "http://gitlab.example.com/h_y/hello",
    "avatar_url": null,
    "git_ssh_url": "git@gitlab.example.com:h_y/hello.git",
    "git_http_url": "http://gitlab.example.com/h_y/hello.git",
    "namespace": "h_y",
    "visibility_level": 0,
    "path_with_namespace": "h_y/hello",
    "default_branch": "master",
    "ci_config_path": null,
    "homepage": "http://gitlab.example.com/h_y/hello",
    "url": "git@gitlab.example.com:h_y/hello.git",
    "ssh_url": "git@gitlab.example.com:h_y/hello.git",
    "http_url": "http://gitlab.example.com/h_y/hello.git"
  },
  "commits": [
    {
      "id": "9ff547f1010f40c54aefe693d32c026cfc7d8f4d",
      "message": "type\n",
      "title": "type",
      "timestamp": "2020-05-28T15:09:37+08:00",
      "url": "http://gitlab.example.com/h_y/hello/-/commit/9ff547f1010f40c54aefe693d32c026cfc7d8f4d",
      "author": {
        "name": "h_y",
        "email": "h_y@example.com"
      },
      "added": [

      ],
      "modified": [
        "Jenkinsfile"
      ],
      "removed": [

      ]
    },
    {
      "id": "a49de07609ad97132c0c42aca35c75694ab80085",
      "message": "type\n",
      "title": "type",
      "timestamp": "2020-05-28T15:08:47+08:00",
      "url": "http://gitlab.example.com/h_y/hello/-/commit/a49de07609ad97132c0c42aca35c75694ab80085",
      "author": {
        "name": "h_y",
        "email": "h_y@example.com"
      },
      "added": [

      ],
      "modified": [
        "Jenkinsfile"
      ],
      "removed": [

      ]
    },
    {
      "id": "a2e3c8d96b30967da1fa9579096d52c2b3757d2a",
      "message": "type\n",
      "title": "type",
      "timestamp": "2020-05-28T15:07:58+08:00",
      "url": "http://gitlab.example.com/h_y/hello/-/commit/a2e3c8d96b30967da1fa9579096d52c2b3757d2a",
      "author": {
        "name": "h_y",
        "email": "h_y@example.com"
      },
      "added": [

      ],
      "modified": [
        "Jenkinsfile"
      ],
      "removed": [

      ]
    }
  ],
  "total_commits_count": 3,
  "push_options": {
  },
  "repository": {
    "name": "hello",
    "url": "git@gitlab.example.com:h_y/hello.git",
    "description": "",
    "homepage": "http://gitlab.example.com/h_y/hello",
    "git_http_url": "http://gitlab.example.com/h_y/hello.git",
    "git_ssh_url": "git@gitlab.example.com:h_y/hello.git",
    "visibility_level": 0
  }
}