1. 1.在environment文件夹下新建一个environment.test.ts文件
    2. export const environment = {
    3.     production:true,
    4.     baseURL:'http://localhost:3002'
    5. }
    8. 2.在angula.json文件夹中复制production字段的内容并改变
    9. "test": {
    10.               "budgets": [
    11.                 {
    12.                   "type": "initial",
    13.                   "maximumWarning": "500kb",
    14.                   "maximumError": "1mb"
    15.                 },
    16.                 {
    17.                   "type": "anyComponentStyle",
    18.                   "maximumWarning": "2kb",
    19.                   "maximumError": "4kb"
    20.                 }
    21.               ],
    22.               "fileReplacements": [
    23.                 {
    24.                   "replace": "src/environments/environment.ts",
    25.                   //与production中为"with": "src/environments/environment.prod.ts"
    26.                   "with": "src/environments/environment.test.ts"
    27.                 }
    28.               ],
    29.               "outputHashing": "all"
    30.             },
    33. 在serve字段下复制production字段的内容并更改
    34. "test": {
    35.               "browserTarget": "test4:build:test"
    36.               // ng serve --configuration=test  --port 4600
    37.             },
    40. 3.启动命令
    41. ng serve --configuration=test  --port 4600
    42. //在4600端口下进行查看，可以看到test环境的环境变量已经改变，如下图

    image.png