Node.js Express可选参数

我想要这样的路径：

/skittles？type[]=blue和type[]=green

（就像

x-www-form-urlencoded

，但这是对api的get请求）

因此，如果我有以下代码，我将如何向路由路径（当前/skittles）添加可选参数

---

您不需要将它们添加到路径中。您将在

req.query

对象中找到它们

var util = require('util');

app.get('/skittles', function(req, res) {
  console.log(req.query);
  var type = req.query.type || [];
  console.log("type: "+util.inspect(type));
  res.send("Type: "+util.inspect(type));
});

---

您可以像这样验证您在req.body或req.query中收到的输入请求参数

app.post('/v1/api/test-api', function(req, res) {
   var parameters = [];
   if(req.body.userName !== undefined) {
       //DO SOMEHTING
       parameters.push({username: req.body.userName});
   }
   if(req.body.userId !== undefined) {
       //DO SOMEHTING

       parameters.push({userId: req.body.userId});
   }
   if(req.body.userEmail !== undefined) {
      //DO SOMEHTING
       parameters.push({userEmail: req.body.userEmail});
   }

   res.json({receivedParameters: parameters});

});

你甚至不能将它们添加到路线中。

app.post('/v1/api/test-api', function(req, res) {
   var parameters = [];
   if(req.body.userName !== undefined) {
       //DO SOMEHTING
       parameters.push({username: req.body.userName});
   }
   if(req.body.userId !== undefined) {
       //DO SOMEHTING

       parameters.push({userId: req.body.userId});
   }
   if(req.body.userEmail !== undefined) {
      //DO SOMEHTING
       parameters.push({userEmail: req.body.userEmail});
   }

   res.json({receivedParameters: parameters});

});