拷贝代码备忘,filter过滤请求,proxyReqOptDecorator重写请求头,代码如下:
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var express = require( 'express' ); var proxy = require( 'express-http-proxy' ) var app = express(); app.all( '*' , function (req, res, next) { res.header( "Access-Control-Allow-Origin" , req.headers.origin); res.header( "Access-Control-Allow-Methods" , "PUT,POST,GET,DELETE,OPTIONS" ); res.header( "Access-Control-Allow-Credentials" , "true" ); res.header( "Content-Type" , "application/json;charset=utf-8" ); if (req.method == 'OPTIONS' ) { res.header( 'Access-Control-Allow-Headers' , req.headers[ 'access-control-request-headers' ]); res.send(200); /*让options请求快速返回*/ } else { next(); } }); // 代码转发 app.use( '/ProxySSO' , proxy(req => { return req.headers.apiurl }, { filter: function (req, res) { // 用户名\系统标识\用户权限 let { systemName, masterName, powers } = req.tokenDecode; const { originalUrl } = req; const url = originalUrl.replace( '/ProxySSO' , '' ).split( '?' )[0]; /** * 接口权限检查 * @param {String} url 接口地址 * @param {Object} powers rbac权限列表 * @returns {boolean} 是否有权限 */ const checkPowers = (url, powers) => { // do something } const hasPowers = checkPowers(url, powers); // 权限判断 return hasPowers; }, proxyReqOptDecorator: function (proxyReqOpts, srcReq) { // header增加masterName 具体按照自己的需求来 // proxyReqOpts.headers['masterName'] = srcReq.tokenDecode.masterName; return proxyReqOpts; } })); module.exports = app; |
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原文链接:https://juejin.im/post/6883405172748320775