Post下别忘了：
app.use(bodyParser.json()); // for parsing application/json app.use(bodyParser.urlencoded({ extended: true })); // for parsing application/x-www-form-urlencoded
更详细：http://blog.csdn.net/charlene0824/article/details/51199292
Nodejs + express post get 参数获取小结
原文：http://www.cnblogs.com/hqb-blog/p/7016642.html