first commit

run.js

@@ -0,0 +1,95 @@
+const http = require("http");
+const { URL } = require("url");
+
+let map = new Map();
+map.set("get", {})
+map.set("post", {})
+let port = 3000
+let hostName = "127.0.0.1"
+
+
+let server = http.createServer()
+
+server.listen(port, hostName, () => {
+  console.log(`app is run http://${hostName}:${port}`);
+})
+
+
+server.get = (path, callback) => {
+  map.get("get")[path] = callback
+}
+
+server.post = (path, callback) => {
+  map.get("post")[path] = callback
+}
+
+server.on("request", async (req, res) => {
+  if (req.url != "/favicon.ico") {
+    json(res)
+
+    // 请求方式转小写
+    req.method = req.method.toLowerCase()
+    // 解析请求地址
+    req.url = new URL(req.url, `http://${req.headers.host}`)
+
+    await handleReqParams(req)
+
+    var pathName = req.url.pathname;
+    if (map.get(req.method)[pathName] != undefined) {
+      await map.get(req.method)[pathName](req, res)
+    } else {
+      // 如果请求不存在的话
+      res.end(`${req.method} methods to path: ${pathName} not found`)
+    }
+  }
+
+})
+
+/**
+ * 直接响应json数据
+ * @param {*} res 
+ */
+const json = (res) => {
+  res.json = (data) => res.end(JSON.stringify(data))
+}
+
+/**
+ * GET请求参数转对象
+ * @param {*} req 
+ */
+const handleReqParams = (req) => {
+  return new Promise((resolve, reject) => {
+    req.query = {}
+    req.body = {}
+
+    switch (req.method) {
+      case "get":
+        // 如果地址后面没有参数，则处理参数
+        if (req.url.search.length != 0) {
+          req.query = stringToObj(req.url.searchParams.toString())
+        }
+        resolve(req)
+        break;
+
+      case "post":
+        req.on('data', (data) => req.body = JSON.parse(data.toString()));
+        req.on('end', () => resolve(req))
+        break;
+
+      default:
+        break;
+    }
+  })
+}
+
+function stringToObj(str) {
+  var obj = {};
+  var temp = str.split('&')
+  for (var i = 0; i < temp.length; i++) {
+    var t = temp[i].split('=')
+    obj[t[0]] = Number.isNaN(Number(t[1])) ? decodeURIComponent(t[1]) : Number(t[1])
+  }
+  return obj
+}
+
+module.exports = server