不需要使用Fiddler Charles拦截http请求了，我们可以使用前端调试利器NProxy。只需要一个npm包，加上一个配置文件，并且支持全平台。

官网

安装

npm install -g nproxy (node >= v0.8.x is required)

使用

nproxy -l replace_rule.js

Setting your browser's proxy to 127.0.0.1:port(8989 by default)

这样就会将你浏览器的代理设置为localhost:8989了。

代理本地到远程和代理远程到本地

1. 将本地api映射到服务器上 这个功能现在webpack-dev-server也有这个功能了

2. 用本地文件代理线上文件

   {
   pattern: 'homepage.css',
   responder: '/path/to/homepage.js'

   }

3. 替换线上一个目录下的所有文件

模板文件

module.exports = [  // 1. replace single file with local one  {    pattern: 'homepage.js',      // Match url you wanna replace    responder:  "/home/goddyzhao/workspace/homepage.js"  },  // 2. replace single file with web file  {    pattern: 'homepage.js',      // Match url you wanna replace    responder:  "http://www.anotherwebsite.com/assets/js/homepage2.js"  },  // 3. replace combo file with src with absolute file path  {    pattern: 'group/homepageTileFramework.*.js',     responder: [      '/home/goddyzhao/workspace/webapp/ui/homepage/js/a.js',      '/home/goddyzhao/workspace/webapp/ui/homepage/js/b.js',      '/home/goddyzhao/workspace/webapp/ui/homepage/js/c.js'    ]   },  // 4. replace combo file with src with relative file path and specified dir  {    pattern: 'group/homepageTileFramework.*.js',    responder: {      dir: '/home/goddyzhao/workspace/webapp/ui/homepage/js',      src: [        'a.js',        'b.js',        'c.js'      ]    }  },  // 5. Map server image directory to local image directory  {    pattern: 'ui/homepage/img',  // must be a string    responder: '/home/goddyzhao/image/' //must be a absolute directory path  },  // 6. Write responder with regular expression variables like $1, $2  {    pattern: /https?:\/\/[\w\.]*(?::\d+)?\/ui\/(.*)_dev\.(\w+)/,    responder: 'http://localhost/proxy/$1.$2'  },  // 7. Map server image directory to local image directory with regular expression  // This simple rule can replace multiple directories to corresponding locale ones  // For Example,   //   http://host:port/ui/a/img/... => /home/a/image/...  //   http://host:port/ui/b/img/... => /home/b/image/...  //   http://host:port/ui/c/img/... => /home/c/image/...  //   ...  {    pattern: /ui\/(.*)\/img\//,    responder: '/home/$1/image/'  }];