版本依赖情况：

PS D:\suidian-yuexi\admin> npm list vue
npm WARN config global `--global`, `--local` are deprecated. Use `--location=global` instead.
vue-antd-pro@3.0.2 D:\suidian-yuexi\admin
+-- @ant-design-vue/pro-layout@1.0.13
| +-- vue-container-query@0.1.0
| | `-- vue@2.7.3 deduped
| +-- vue-copy-to-clipboard@1.0.3
| | `-- vue@2.7.3 deduped
| `-- vue@2.7.3 deduped
+-- @vue/cli-plugin-babel@4.5.19
| `-- @vue/babel-preset-app@4.5.19
|   +-- @vue/babel-preset-jsx@1.3.0
|   | `-- vue@2.7.3 deduped
|   `-- vue@2.7.3 deduped
+-- @vue/cli-plugin-unit-jest@4.5.19
| `-- vue-jest@3.0.7
|   `-- vue@2.7.3 deduped
+-- @vue/test-utils@1.3.0
| `-- vue@2.7.3 deduped
+-- ant-design-vue@1.7.8
| +-- @ant-design/icons-vue@2.0.0
| `-- vue@2.7.3 deduped
+-- viser-vue@2.4.8
| `-- vue@2.7.3 deduped
+-- vue-svg-component-runtime@1.0.1
| `-- vue@2.7.3 deduped
+-- vue-svg-icon-loader@2.1.1
| +-- vue-svg-component-builder@2.0.3
| | `-- vue@2.7.3 deduped
| `-- vue@2.7.3 deduped
+-- vue@2.7.3
`-- vuex@3.6.2
  `-- vue@2.7.3 deduped

PS D:\suidian-yuexi\admin> npm run serve
npm WARN config global `--global`, `--local` are deprecated. Use `--location=global` instead.

> vue-antd-pro@3.0.2 serve
> vue-cli-service serve

1、修改项目运行路径，打开vue.config.js文件，在vueConfig的json中增加：

publicPath: "/admin2/",

2、修改路由的基础路径，打开index.js文件，在createRouter的new Router对象时传入的json增加：

base: '/admin2',

3、重启服务即可