nodejs 连接MySQL后，输出数据带有RowDataPacket中括号大括号怎么去掉？

Posted 2021-01-21 cs_wu

 

var mysql  = require(\'mysql\');  
 
var connection = mysql.createConnection({     
  host     : \'localhost\',       
  user     : \'root\',              
  password : \'123456\',       
  port: \'3306\',                   
  database: \'reji\' 
}); 
 
connection.connect();
 
var  sql = \'SELECT * FROM user\';
//查
connection.query(sql,function (err, result) {
        if(err){
          console.log(\'[SELECT ERROR] - \',err.message);
          return;
        }
 
       console.log(\'--------------------------SELECT----------------------------\');
       console.log(result);
       console.log(\'------------------------------------------------------------\\n\\n\');  
});
 
connection.end();

　　运行结果如下：

如果单纯是查询结果那这样显示也是没有问题的，但是如果我们是想把数据传送出去或者对应读取出数据就 不太好操作了

 

我们进行如下更改代码：

var mysql  = require(\'mysql\');  
 
var connection = mysql.createConnection({     
  host     : \'localhost\',       
  user     : \'root\',              
  password : \'123456\',       
  port: \'3306\',                   
  database: \'reji\' 
}); 
 
connection.connect();
 
var  sql = \'SELECT * FROM user\';
//查
connection.query(sql,function (err, result) {
        if(err){
          console.log(\'[SELECT ERROR] - \',err.message);
          return;
        }
 
       console.log(\'--------------------------SELECT----------------------------\');
       console.log(\'account:\'result[0].account);//更改位置
       console.log(\'------------------------------------------------------------\\n\\n\');  
});
 
connection.end();

　　运行结果：

 

 用例二：查询特定帐号的name值

\'use strict\';
var app = require(\'express\')();
var express = require("express");
var server = require(\'http\').Server(app);
var io = require(\'socket.io\')(server);
var mysql  = require(\'mysql\');  
 
var connection = mysql.createConnection({     
  host     : \'localhost\',       
  user     : \'root\',              
  password : \'123456\',       
  port: \'3306\',                   
  database: \'reji\' 
}); 
 
connection.connect();



//var name=\'select name form user where account=1870096555\';
var name = "select name from user where account=\'"[phone]+"\'";
connection.query(name,function (err, results) {
        if(err){
          console.log(\'[SELECT ERROR] - \',err.message);
          return;
        }
		//results = JSON.stringify(results);
		//var temp=new String(results[0].name);
       console.log(\'--------------------------SELECT----------------------------\');
       console.log(\'name:\',results[0].name);
       console.log(\'------------------------------------------------------------\\n\\n\');  
});
//console.log(name);


connection.end();