webstorm 连接mysql

var mysql=require('mysql');
var options={
url:'localhost',
port:'3306',
database:'school',
user:'root',
password:'123456'
};
var client=mysql.createConnection(options);
var age=50;
try{
client.query('select * from student',function(err,result,fields){
if(err){
//一定去处理
console.log('内部'+err.message);
}for(var i=0;i<result.length;i++){
console.log(result[i].sname);
}
});
}catch (e){
console.log('外部'+e.message);
}finally{
client.end(function(){
console.log('client is closed')
});

}

//销毁连接
//client.destroy();