如何在Express中获取URL参数？

快递4.x

要获取URL参数的值，请使用req.params

app.get('/p/:tagId', function(req, res) {  res.send("tagId is set to " + req.params.tagId);});// GET /p/5// tagId is set to 5

如果要获取查询参数

?tagId=5

app.get('/p', function(req, res) {  res.send("tagId is set to " + req.query.tagId);});// GET /p?tagId=5// tagId is set to 5

快递3.x

URL参数

app.get('/p/:tagId', function(req, res) {  res.send("tagId is set to " + req.param("tagId"));});// GET /p/5// tagId is set to 5

查询参数

app.get('/p', function(req, res) {  res.send("tagId is set to " + req.query("tagId"));});// GET /p?tagId=5// tagId is set to 5