Angular reverse proxy realizes front-end cross-domain

Angular2+ provides a reverse proxy that can directly implement cross-domain in front-end code. The specific method is as follows:

A proxy.conf.json configuration file is created in the root directory of the angular project. The code example is as follows:

{
    "/api": { // 将http://localhost:4200/api通过代理实际访问: http://www.hy.com/apis/api
        "target": "http://www.hy.com/apis/", //【必须】：需要跨域的服务器地址
        "logLevel": "debug", //调试用，如果代理成功，在命令行工具中会显示跨域的地址
        "changeOrigin": true, //如果不是代理本机就【必须】设变true，否则可以不设置
        "pathRewrite": { // 修改代理接口的路径地址
            "^/api": ""
        }
    },
    "/": { // 访问http://localhost:4200/  实际访问http://www.hy.com/apis/
        "target":"http://www.hy.com/apis"
    }
}

Configure the package.json file in the root directory of the angular project, or run cmd directly: ng serve -o --proxy-config proxy.cong.json , as shown below:

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