jenkins搭建流水线从拉取代码开始其实是最正规的方式，但是如何拉取有多种方式
可以用jenkins的插件以钩子的形式，也可以在pipline脚本中实现，今天介绍两种 pipline方式实现拉取代码的方式。

1.pipline语法直接实现方式

1.1例子1

pipeline {agent anystages {stage('Project1'){steps{cleanWs()dir('project1') {// Doing your project 1 stuffgit(url: 'https://github.com/xxx/proj1.git', branch: 'main')}}}stage('Project 2'){steps{dir('project2') {// Doing your project 2 stuffgit(url: 'https://github.com/xxx/proj2.git', branch: 'dev')}}}stage('Something Else'){steps{sh 'ls -al'         }}}
}

1.2例子2

pipeline {agent anystages {stage('Project1'){steps{cleanWs()echo "Let's move proj 1 stuff to a sub dir"sh '''mkdir project1shopt -s extglob dotglobmv !(project1) project1'''}}stage('Project 2'){steps{dir('project2') {// Doing your project 2 stuffgit(url: 'https://github.com/xxx/proj2.git', branch: 'main')}}}stage('Something Else'){steps{sh 'ls -al'               }}}
}

2.jenkins pinline 流水线中调用 shell脚本方式

这种方式需要服务器预先安装好了git

pipline中调用shell脚本

def CustomizeRepos = ''
def Baseline = 'false'
def VersionInfo=''
def testMessage=''
def Pr_CustomizeRepos = ""pipeline {agent {label 'le-node'}parameters {string(name: 'BRANCHNAME', defaultValue: 'develop', description: '代码分支名称')}environment {JENKINS_NODE_COOKIE = 'dontKillMe'project_path = '/automation/code/'pipeline_git_tool = '/automation/scripts/build_gitclone.sh'url = 'https://gitee.com/burebaobao/tscancode-master.git'}stage("下载平台代码") {steps {script {echo "开始克隆代码"sh "cd ${project_path}"// 调用脚本sh "${env.pipeline_git_tool} '${project_path}' '${BRANCHNAME}' '${url}'"}}}}

所调用的shell脚本

#!/bin/bash#########################################
#代码clone脚本
#参数：
# path 代码存储路径
# branch 代码分支名
# url 地址
##########################################参数判断 
if [ $# != 3 ]; thenecho "参数输入错误,输入必须包括path、Branch、url参数!"exit -1
fipath=$1
branch=$2
url=$3echo "开始"
echo "切换路径到 $path"
cd ${path}echo "克隆的代码分支为 ${branch}"mcd="git clone -b ${branch} --single-branch https://gitee.com/burebaobao/tscancode-master.git"
git clone -b ${branch} --single-branch ${url}