基于Gitlab CI+Flutter+Fastlane多环境配置：服务文件替换问题

方案1：用Gitlab CI变量存储配置文件内容 #

• 操作步骤：
  1. 进入Gitlab项目的「设置」→「CI/CD」→「变量」，给Dev和Staging环境分别添加变量：比如DEV_GOOGLE_SERVICES_JSON（填入Dev环境的JSON文本内容）、STAGING_GOOGLE_SERVICES_JSON（填入Staging环境的）；iOS同理添加DEV_GOOGLE_SERVICES_PLIST和STAGING_GOOGLE_SERVICES_PLIST，记得勾选「保护变量」和「掩码变量」防止内容泄露。
  2. 在.gitlab-ci.yml里根据当前环境分支或触发变量，把对应变量内容写入目标文件：

     stages:
       - prepare
       - build
     
     prepare_config:
       stage: prepare
       script:
         # 替换Android的JSON文件
         - |
           if [ "$CI_ENVIRONMENT_NAME" = "staging" ]; then
             echo "$STAGING_GOOGLE_SERVICES_JSON" > android/app/google-services.json
           else
             echo "$DEV_GOOGLE_SERVICES_JSON" > android/app/google-services.json
           fi
         # 替换iOS的Plist文件
         - |
           if [ "$CI_ENVIRONMENT_NAME" = "staging" ]; then
             echo "$STAGING_GOOGLE_SERVICES_PLIST" > ios/Runner/GoogleService-Info.plist
           else
             echo "$DEV_GOOGLE_SERVICES_PLIST" > ios/Runner/GoogleService-Info.plist
           fi
       rules:
         - if: '$CI_COMMIT_BRANCH == "dev"'
           variables:
             CI_ENVIRONMENT_NAME: "dev"
         - if: '$CI_COMMIT_BRANCH == "staging"'
           variables:
             CI_ENVIRONMENT_NAME: "staging"
     

方案2：按环境分支存放配置文件，CI中复制替换 #

• 操作步骤：
  1. 在项目根目录建configs文件夹，分别创建dev和staging子目录，放入对应环境的配置文件：

     configs/
       dev/
         google-services.json
         GoogleService-Info.plist
       staging/
         google-services.json
         GoogleService-Info.plist
     

  2. 在.gitlab-ci.yml里根据当前分支，把对应环境的文件复制到项目指定路径：

     prepare_config:
       stage: prepare
       script:
         - cp configs/$CI_COMMIT_BRANCH/google-services.json android/app/
         - cp configs/$CI_COMMIT_BRANCH/GoogleService-Info.plist ios/Runner/
       rules:
         - if: '$CI_COMMIT_BRANCH =~ /^(dev|staging)$/'
     

  备注：如果分支名和环境名不匹配，可以在rules里通过variables: ENV_NAME: "staging"做映射。

方案3：结合Fastlane脚本处理环境配置 #

• 操作步骤：
  1. 在Fastfile里加一个处理配置的lane，根据传入的环境参数复制对应文件：

     lane :setup_config do |options|
       env = options[:env] || "dev"
       # 替换Android配置
       sh "cp configs/#{env}/google-services.json android/app/"
       # 替换iOS配置
       sh "cp configs/#{env}/GoogleService-Info.plist ios/Runner/"
     end
     

  2. 在.gitlab-ci.yml里调用Fastlane的setup_config lane，传入当前环境：

     prepare_config:
       stage: prepare
       script:
         - bundle install
         - fastlane setup_config env:$CI_ENVIRONMENT_NAME
       rules:
         - if: '$CI_COMMIT_BRANCH == "dev"'
           variables:
             CI_ENVIRONMENT_NAME: "dev"
         - if: '$CI_COMMIT_BRANCH == "staging"'
           variables:
             CI_ENVIRONMENT_NAME: "staging"
     

内容的提问来源于stack exchange，提问作者user4415205