获取请求很中的参数是每个web后台处理的必经之路,nodejs的 express框架 提供了四种方法来实现. req.body req.query req.params req.param() 首先介绍第一个req.body 官方文档解释: Contains key-value pairs of data submitted in the request body. By default, it is undefined, and is populated when you use body-p