as怎么连接mysql aspsql数据库连接

proper文件连接mysql数据库怎么写1.打开IDEA,新建一个Web项目 , 右键点击新建的项目名,选择创建文件目录(Directory),一般properties文件夹命名应为resoures 。
2.右键点击新建的resources文件夹,弹出的窗口里选择Mark Dictory as Resources Root将文件夹定义为配置文件 。
3.也可以通过Ctrl shift alt s组合件打开Project Structure面板将需要的文件夹声明为配置文件类型 。
(选择文件夹,再点击Mark as:栏里的功能项,就能将文件夹声明为相应的类型)
最后点击OK 完成 。
4.右键点击声明为resources类型的文件夹选择Resource Bundle , 就能创架一个properties文件了 。
5.mysql 的properties配置文件是以键值对形式存读取的,一个对象占用一行 , 行末不能添加分号 。
6.配置文件的使用 。
7.以上就是IDEA使用properties配置文件进行mysql数据库连接的方法 。
mysql中on,in,as,where如何用,意思是什么?Where查询条件,on内外连接时候用,as作为别名,in查询某值是否在某条件里
as3.0怎么连接mysql数据库为了使用简单,我做了一个简单的包装类(包含一个数据结构):
package com.easily.ds
{
public class DataBaseData
{
public var host:String;
public var port:int;
public var username:String;
public var password:String;
public var database:String;
}
}
package com.easily.util
{
import com.easily.ds.DataBaseData;
import com.maclema.mysql.Connection;
import com.maclema.mysql.Field;
import com.maclema.mysql.MySqlResponse;
import com.maclema.mysql.MySqlToken;
import com.maclema.mysql.ResultSet;
import com.maclema.mysql.Statement;
import flash.events.Event;
import flash.events.EventDispatcher;
import mx.rpc.AsyncResponder;
/**
* @author Easily
*/
public class DataBase extends EventDispatcher
{
private var mDataBase:DataBaseData;
private var mConnection:Connection;
public function DataBase(database:DataBaseData)
{
mDataBase = database;
}
public function connect():void
{
mConnection = new Connection(mDataBase.host, mDataBase.port,
mDataBase.username, mDataBase.password, mDataBase.database);
mConnection.addEventListener(Event.CONNECT, onConnected);
mConnection.connect();
function onConnected(event:Event):void
{
mConnection.removeEventListener(Event.CONNECT, onConnected);
dispatchEvent(event);
}
}
public function disconnect():void
{
mConnection.disconnect();
}
public function select(sql:String, completeHandler:Function, errorHandler:Function = null):void
{
var st:Statement = mConnection.createStatement();
var token:MySqlToken = st.executeQuery(sql);
var responder:AsyncResponder = new AsyncResponder(resultHandler, faultHandler, token);
token.addResponder(responder);
function resultHandler(result:Object/*ResultSet*/, token:Object/*MySqlToken*/):void
{
var data:Array = [];
if (result is ResultSet)
{
var fieldList:Array = result.getColumns();
while (result.next())
{
var item:Object = {};
for each (var field:Field in fieldList)
{
item[field.getName()] = result.getString(field.getName());
}
data.push(item);
}
}
completeHandler(data);
}
function faultHandler(info:Object, token:Object):void
{
if (errorHandler == null) return;
errorHandler();
}
}
public function insert(sql:String, completeHandler:Function, errorHandler:Function = null):void
{
var st:Statement = mConnection.createStatement();
var token:MySqlToken = st.executeQuery(sql);
var responder:AsyncResponder = new AsyncResponder(resultHandler, faultHandler, token);
token.addResponder(responder);
function resultHandler(result:Object/*MySqlResponse*/, token:Object/*MySqlToken*/):void
{
completeHandler(result.insertID);
}
function faultHandler(info:Object, token:Object):void
{
if (errorHandler == null) return;
errorHandler();
}
}
public function remove(sql:String, completeHandler:Function, errorHandler:Function = null):void
{
var st:Statement = mConnection.createStatement();
var token:MySqlToken = st.executeQuery(sql);
var responder:AsyncResponder = new AsyncResponder(resultHandler, faultHandler, token);
【as怎么连接mysql aspsql数据库连接】token.addResponder(responder);
function resultHandler(result:Object/*MySqlResponse*/, token:Object/*MySqlToken*/):void
{
completeHandler();
}
function faultHandler(info:Object, token:Object):void
{
if (errorHandler == null) return;
errorHandler();
}
}
}
}
其中有3个方法,select,insert,remove,分别对应了SQL语句中的select,insert,delete
用法很简单 , 先连接:
var databaseData:DataBaseData = https://www.04ip.com/post/new DataBaseData();
databaseData.host = "127.0.0.1";
databaseData.database = "game";
databaseData.password = "123456";
databaseData.port = 3306;
databaseData.username = "root";
var dataBase:DataBase = new DataBase(databaseData);
dataBase.addEventListener(Event.CONNECT, onConnected);
dataBase.connect();
function onConnected(event:Event):void
{
dataBase.removeEventListener(Event.CONNECT, onConnected);
dispatchEvent(new Event(Event.COMPLETE));
}
如果不需要用了可以先断开连接:
dataBase.disconnect();
下面是select语句:
var sql:String = "select id,name from `npc`";
dataBase.select(sql, endQuery);
function endQuery(data:Array):void
{
var npcList:Array=[];
for each (var item:Object in data)
{
var npc:Object = {id:item.id, name:item.name};
npcList.push(npc);
}
}
insert语句用法会返回一个insertID,也就是插入的那条数据的ID 。
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