将node-http-proxy与expressjs一起使用时出错

Question

我不能让node-http-proxy的最新版本工作(这在以前的版本中是有效的)。Node.js版本为0.6.12，node-http-proxy版本为0.8.0。基本上，我有一台服务器监听端口10000，另一台监听端口5000。我想把所有以/api开头的请求代理给最后一个人(在去掉这个前缀之后)。

我的代码是：

var express = require("express");
var httpProxy = require('http-proxy');
var cluster = require('cluster');
var fs = require('fs');

// Use http server for local tests
var app = express.createServer();

// Proxy request targeting API
app.all('/api/*',function(req, res){

  // Remove '/api' part from query string
  req.url = '/' + req.url.split('/').slice(2).join('/');

  // Create proxy
  var proxy = new httpProxy.HttpProxy();
  proxy.proxyRequest(req, res, {
    target: {
      host: 'localhost',
      port: 5000
    }
  });
});

// Handle static files
app.use(express.static(__dirname + '/public'));

// Run application
app.listen(10000);

静态文件是正确的，但是当涉及到代理的东西时，我得到了这个错误：

Error: Both `options` and `options.target` are required.
at new <anonymous> (/Users/luc/Projects/test/www/node_modules/http-proxy/lib/node-http-proxy/http-proxy.js:53:11)
at /Users/luc/Projects/test/www/server.js:15:16
at callbacks (/Users/luc/Projects/test/www/node_modules/express/lib/router/index.js:272:11)
at param (/Users/luc/Projects/test/www/node_modules/express/lib/router/index.js:246:11)
at pass (/Users/luc/Projects/test/www/node_modules/express/lib/router/index.js:253:5)
at Router._dispatch (/Users/luc/Projects/test/www/node_modules/express/lib/router/index.js:280:4)
at Object.handle (/Users/luc/Projects/test/www/node_modules/express/lib/router/index.js:45:10)
at next (/Users/luc/Projects/test/www/node_modules/express/node_modules/connect/lib/http.js:203:15)
at Object.handle (/Users/luc/Projects/test/www/node_modules/express/lib/http.js:83:5)
at next (/Users/luc/Projects/test/www/node_modules/express/node_modules/connect/lib/http.js:203:15)-error-undefined

我已经按请求添加了目标，但仍然出现相同的错误。

Answer 1

您需要将选项传递给HttpProxy构造函数，而不是传递给proxyRequest函数。

https://github.com/nodejitsu/node-http-proxy/blob/master/lib/node-http-proxy/http-proxy.js#L51

Answer 2

另外，你也可以试着说var proxy = new httpProxy.RoutingProxy();