nodejs express post 获取参数

需要加入bodyParser

var bodyParser = require('body-parser')
app.use(bodyParser.urlencoded({ extended: false }));

post方法

app.post('/api', function (req, res) {
    //使用.param可以拿post、get
    var page = req.param('page') || 1;
    var size = req.param('size') || 10;

另，允许跨域的做法

app.all('*', function (req, res, next) {
//      res.header("Access-Control-Allow-Origin", "*");这个对with credentials无效效
        res.header("Access-Control-Allow-Origin", "http://XX.XX.com");
        res.header("Access-Control-Allow-Credentials", true);

        res.header("Access-Control-Allow-Headers", "X-Requested-With");
        res.header("Access-Control-Allow-Methods", "PUT,POST,GET,DELETE,OPTIONS");
        res.header("X-Powered-By", ' 4.2.1')
        res.header("Content-Type", "application/json;charset=utf-8");
        next();
});