纯粹记录一下最基础写法,几乎没有写什么逻辑,写法也并不是很完善(因为我自己也刚刚摸索出来这么写可以...= =!) 望 
//1.insert操作
let insertSql = 'insert into User(username,password,name,gender,age) values (?,?,?,?,?)'; let insertParams = [username, password, name, gender, age]; mysqlConnection.query(insertSql, insertParams, function (error, results, fields) { if (error) throw error; return results; }); //2.select操作(我自己测试的时候发现,字符串类型的列,要给参数额外增加引号,否则会被当做数字类型或列名来进行处理) let selectSql = 'select id from User where username = \''.concat(username, '\' and password = \'', password, '\''); mysqlConnection.query(selectSql, function (error, results, fields) { if(error) throw error; return results; }); //3.delete操作 let deleteSql = 'delete from user where id = \''.concat(id, '\''); mysqlConnection.query(deleteSql, function (error, results, fields) { if (error) throw error; return results; }); //4.update操作 let updateSql = 'update User set age = 30 where id = \''.concat(id, '\''); mysqlConnection.query(updateSql, function (error, results, fields) { if (error) throw error; return results; });
