class Handler {
get(req, res) {
let type = req.query.type
this[type](req, res)
}
typeA(req, res) {
res.send('hello a')
}
typeB(req, res) {
res.send('hello b')
}
}
let express = require('express')
let app = express()
let handler = new Handler()
app.use('/', handler.get)
宝慕林4294392
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