first commit

.gitignore

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+.idea
+.DS_Store
+node_modules/
+dist/
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+

app.js

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+/**
+ * Created by 12 on 2017/7/3.
+ */
+const express = require('express')
+const app = express()
+
+const query = require('./utils/utils')
+// 跨域设置
+app.all('*', function (req, res, next) {
+  res.header("Access-Control-Allow-Credentials", true)
+  res.header("Access-Control-Allow-Origin", "*")
+  res.header("Access-Control-Allow-Headers", "X-Requested-With")
+  res.header("Access-Control-Allow-Methods", "PUT,POST,GET,DELETE,OPTIONS")
+  res.header("X-Powered-By", ' 3.2.1')
+  res.header("Content-Type", "application/json;charset=utf-8")
+  next()
+})
+
+app.get('/', function (req, res) {
+  res.send('hello express')
+})
+
+app.get('/book', require('./router/book'))
+
+app.get('/booklist', require('./router/booklist'))
+
+app.get('/titles', require('./router/booktitles'))
+
+app.get('/type', require('./router/type'))
+
+const port = process.env.PORT || 3333
+
+app.listen(3333, () => {
+  console.log(`server running @${port}`)
+})
+
+
+/*function pattern(num) {
+  for (var i = 0; i < num; i++) {
+    let a = `1${'*'.repeat(i)}${i + 1}`
+    console.log(i < 1 ? a.replace('11', '1') : a)
+  }
+}
+
+pattern(10)
+
+function aaa(num) {
+  for (var i = 0; i < num; i++) {
+    let a = `${'1'.padEnd(i + 1, '*')}${i + 1}`
+    console.log(i < 1 ? a.replace('11', '1') : a)
+  }
+}
+
+function star(tel) {
+  return `${tel.substr(0,3)}${'*'.repeat(4)}${tel.substr(7)}`
+}*/

createtable.js

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+/**
+ * Created by 12 on 2017/7/4.
+ */
+var mysql = require('mysql')
+
+const pool = mysql.createPool({
+  host: 'localhost',
+  user: 'root',
+  password: '460520',
+  database: 'book',
+  port: 3306
+})
+
+for (var i = 1; i <= 200; i++) {
+  (function (i) {
+    var sql = `
+      CREATE TABLE IF NOT EXISTS \`book${i}\`(
+      \`id\` decimal(10,0) NOT NULL,
+      \`err\` decimal(3,0) DEFAULT NULL,
+      \`bookName\` varchar(100) DEFAULT NULL,
+      \`title\` varchar(100) DEFAULT NULL,
+      \`content\` mediumtext,
+      PRIMARY KEY (\`id\`)
+    ) ENGINE=MyISAM DEFAULT CHARSET=utf8;
+    `
+    pool.query(sql, function (error, results, fields) {
+      // And done with the connection.
+      console.log('create ' + i + ' success!')
+      // Handle error after the release.
+      if (error) throw error
+      // Don't use the connection here, it has been returned to the pool.
+    })
+  })(i)
+}

package.json

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+{
+  "name": "node-mysql",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "async": "^2.5.0",
+    "express": "^4.15.3",
+    "mysql": "^2.13.0"
+  }
+}

router/book.js

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+/**
+ * Created by 12 on 2017/7/3.
+ */
+const query = require('../utils/utils')
+
+const router = (req, res) => {
+  const book = req.query.book
+  const id = req.query.id
+
+
+  query(`select * from book${book} where id=${id};`, [1], (err, results, fields) => {
+    if (err) throw err
+    res.send(results[0])
+  })
+}
+
+module.exports = router

router/booklist.js

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+/**
+ * Created by 12 on 2017/7/3.
+ */
+const query = require('../utils/utils');
+
+const router = (req, res) => {
+  const id = req.query.id || 0
+  query(id ? `select * from booklist where id=${id};` : `select * from booklist;`, [1], (err, results, fields) => {
+    if (err) throw err
+    id ? res.send(results[0]) : res.send(results)
+  })
+}
+
+module.exports = router

router/booktitles.js

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+/**
+ * Created by 12 on 2017/7/3.
+ */
+const query = require('../utils/utils');
+
+const router = (req, res) => {
+  const id = req.query.id
+
+  query(`select * from booktitles where id=${id};`, [1], (err, results, fields) => {
+    if (err) throw err
+    res.send(results[0])
+  })
+}
+
+module.exports = router

router/chapter.js

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+/**
+ * Created by 12 on 2017/7/3.
+ */
+const query = require('../utils/utils')
+
+const router = (req, res) => {
+  const book = req.query.book
+  const id = req.query.id
+
+  query(`select * from book${book} where id=${id};`, [1], (err, results, fields) => {
+    if (err) throw err
+    res.send(results[0])
+  })
+}
+
+module.exports = router

router/type.js

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+/**
+ * Created by 12 on 2017/7/3.
+ */
+const query = require('../utils/utils')
+
+function getType(type) {
+  if (type == 1) {
+    return '玄幻'
+  } else if (type == 2) {
+    return '修真'
+  } else if (type == 3) {
+    return '都市'
+  } else if (type == 4) {
+    return '历史'
+  } else if (type == 5) {
+    return '网游'
+  }
+}
+
+//玄幻1 修真2 都市3 历史4 网游5
+const router = (req, res) => {
+  let type = getType(req.query.type)
+  //坑1 sql语句中要加上引号
+  query(`select * from booklist where type='${type}'`, [1], (err, results, fields) => {
+    if (err) throw err
+    res.send(results)
+  })
+}
+
+module.exports = router

utils/utils.js

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+/**
+ * Created by 12 on 2017/7/3.
+ */
+let mysql = require('mysql')
+const pool = mysql.createPool({
+  host: 'localhost',
+  user: 'root',
+  password: '460520',
+  database: 'book',
+  port: 3306
+})
+
+const query = function (sql, option, callback) {
+  pool.getConnection(function (err, connection) {
+    // Use the connection
+    connection.query(sql, option, function (error, results, fields) {
+      // And done with the connection.
+      connection.release()
+
+      // Handle error after the release.
+      if (error) throw error
+      callback(err, results, fields)
+      // Don't use the connection here, it has been returned to the pool.
+    })
+  })
+}
+
+module.exports = query