first commit

历届学生/17届课程/wxShopApp/uniapp-back/mysql/index.js

@@ -0,0 +1,31 @@
+const mysql = require("mysql");
+const config = require("../config");
+
+class Mysql {
+    constructor() {
+        this.connection =  mysql.createConnection(config.mysql);
+        this.connection.connect();
+    }
+
+    /**
+     *
+     * @param params object
+     * {
+     *     sql: 'sql语句'  select * from user where id = ?
+     *     data: [1]   参数
+     * }
+     */
+    query (params) {
+      return new Promise((resolve,reject) => {
+            this.connection.query(params.sql, params.data, function (error, results, fields) {
+                if (error) {
+                    reject(error)
+                } else {
+                    resolve(results)
+                }
+            });
+        });
+    }
+}
+
+module.exports = new Mysql();