fullstack-star · txc111 · Jul 19, 2019 · Jul 19, 2019
diff --git a/app.js b/app.js
@@ -0,0 +1,57 @@
+const express = require('express');
+const path = require('path');
+const os = require('os');
+const exec = require('child_process').exec;
+const app = express();
+
+const arr = [];
+
+app.all('*', function(req, res, next) {
+  res.header('Access-Control-Allow-Origin', 'http://localhost:8080');
+  res.header('Access-Control-Allow-Headers', 'content-type');
+  res.header('Access-Control-Allow-Methods', 'DELETE,PUT,POST,GET,OPTIONS');
+  if (req.method.toLowerCase() == 'options') res.send(200);
+  else {
+    next();
+  }
+});
+
+app.get('/', (req, res) => {
+  res.sendFile(__dirname + '/index.html');
+});
+
+app.get('/device', (req, res) => {
+  console.log(0);
+  res.send({
+    cpus: os.cpus(),
+    os: `${os.platform()} -- ${os.release()} -- ${os.type()}`,
+    memory: os.totalmem(),
+    process: arr
+  });
+});
+
+app.listen(8080, () => {
+  console.log(`app listening at port 8080`);
+});
+
+const cmd = process.platform == 'win32' ? 'tasklist' : 'ps aux';
+
+exec(cmd, function(err, stdout, stderr) {
+  if (err) {
+    return console.log(err);
+  }
+  stdout.split('\n').filter(function(line) {
+    let p = line.trim().split(/\s+/),
+      pname = p[0],
+      pid = p[1];
+    if (p[4]) {
+      var pmem = p[4].split(',').join('');
+    }
+    if (Number(pid) > 0) {
+      arr.push([pname, pid, pmem]);
+    }
+  });
+  arr.sort(function(a, b) {
+    return Number(b[2]) - Number(a[2]);
+  });
+});
diff --git a/bin/hotnode.js b/bin/hotnode.js
@@ -0,0 +1,19 @@
+const fs = require('fs');
+const path = require('path');
+const exec = require('child_process').exec;
+const file = path.resolve('./') + '\\app.js';
+
+//第一次启动 , 记录pid
+let pNode = exec('node app.js');
+console.log(pNode);
+console.log(`服务已启动 , 当前id : ${pNode.pid}`);
+fs.watch(file, (eventType, filename) => {
+  if (filename && eventType === 'change') {
+    console.log(` ${filename} 已更改 ， 重启中..`);
+    pNode.kill();
+    pNode = exec('node app.js');
+    console.log(` 新的id : ${pNode.pid} `);
+  } else {
+    console.log('没change ， 或没文件名');
+  }
+});
diff --git a/index.html b/index.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
+    <title>Get server status</title>
+  </head>
+  <body>
+    <h2>Get server status</h2>
+
+    <script>
+      console.log('getting server status .. ');
+
+      const url = 'http://127.0.0.1:8080/device';
+
+      try {
+        (async () => {
+          let response = await fetch(url);
+          let data = await response.json();
+          console.log(data);
+        })();
+      } catch (e) {
+        console.error(e);
+      }
+
+      // fetch(url)
+      //   .then((response) => response.json())
+      //   .then((data) => console.log(data))
+      //   .catch((e) => console.error( e));
+    </script>
+  </body>
+</html>
diff --git a/node获取系统信息.png b/node获取系统信息.png
diff --git a/package.json b/package.json
@@ -0,0 +1,18 @@
+{
+  "name": "server-test",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "express": "^4.17.1"
+  },
+  "devDependencies": {
+    "nodemon": "^1.19.1"
+  }
+}
diff --git a/重启.png b/重启.png