Question

我想读取JSON文件并在Github Actions YAML文件的字符串中使用属性。我该怎么做呢？（我需要package.json的版本）

Answer 1

使用内置的fromJson(value)（请参见此处：https://help.github.com/en/actions/reference/context-and-expression-syntax-for-github-actions#fromjson）

读取文件取决于您使用的Shell。这是sh的示例：

name: Test linux job
on:
  push

jobs:
  testJob:
    name: Test
    runs-on: ubuntu-latest
    steps:
      - id: set_var
        run: |
          content=`cat ./path/to/package.json`
          # the following lines are only required for multi line json
          content="${content//'%'/'%25'}"
          content="${content//$'\n'/'%0A'}"
          content="${content//$'\r'/'%0D'}"
          # end of optional handling for multi line json
          echo "::set-output name=packageJson::$content"
      - run: |
          echo "${{fromJson(steps.set_var.outputs.packageJson).version}}"

根据https://github.community/t5/GitHub-Actions/set-output-Truncates-Multiline-Strings/td-p/37870

的多行JSON处理

关于set-env / set-output多行处理的GitHub问题：https://github.com/actions/toolkit/issues/403

Answer 2

下面是Official GHA Docs中示例的一个版本，其中包括两个更改：

从文件（./your.json）中加载json
删除换行符（Source）

name: build
on: push
jobs:
  job1:
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.set-matrix.outputs.matrix }}
    steps:
    - id: set-matrix
      run: |
        JSON=$(cat ./your.json)
        echo "::set-output name=${JSON//'%'/'%25'}"

  job2:
    needs: job1
    runs-on: ubuntu-latest
    strategy:
      matrix: ${{fromJson(needs.job1.outputs.matrix)}}
    steps:
    - run: build

Answer 3

我曾经用它来获取json数据的值。希望对您有帮助

  - name: fetch the json value
    run: |
         githubjson=`cat $GITHUB_EVENT_PATH`
         echo $githubjson
         number=`echo $(jq -r '.number' <<< "$githubjson")`
         PRTitle=`echo $(jq -r '.pull_request.title' <<< "$githubjson")`
         PRUrl=`echo $(jq -r '.pull_request.html_url' <<< "$githubjson")`
         PRBody=`echo $(jq -r '.pull_request.body' <<< "$githubjson")`

Answer 4

on: [push, pull_request] 
name: Build
jobs:
  build:
    name: Example
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
        with: 
          path: './'      
      - run: |
          echo "`jq '.base_config[0].value="Alpha-21"' config.json `" > config.json
          echo "`jq '.base_config[1].value="1.2.14"' config.json`" > config.json
          echo "`jq '.base_config[2].value="29/12/2020"' config.json `" > config.json
     
      - uses: EndBug/add-and-commit@v6
        with:
          message: 'Add the version and date'
          add: '*.json --force'
          cwd: './' 
          token: ${{ secrets.TOKEN }}

在Github Actions中读取JSON文件

4 个答案: