first commit

历届学生/罗朝/项目练习/电商App/back-shop/db/index.js

@@ -0,0 +1,23 @@
+var mysql = require('mysql');
+var config = require("../confg/index");
+
+var connection = mysql.createConnection(config.MysqlConfig);
+
+connection.connect();
+
+module.exports = {
+
+  query(sql, sqlParams = [], callback) {
+    console.log("sql", sql)
+    connection.query(sql, sqlParams, (error, results, fields) => {
+      if (error) throw error;
+      console.log("数据库查到的数据：", results)
+      results.length == 0 
+      ? callback({ status: 404, message: '数据库没有数据' })
+      : callback({ status: 200, message: '查询成功', data: results })
+      
+    });
+  } 
+
+}
+