??xml version="1.0" encoding="utf-8" standalone="yes"?>
/*
name: (tng) (tng) (tng) Map.js
author: (tng) WindDC
date: (tng) (tng) (tng) 2006-10-27
content: 本程序用JS实现cLJAVA中MAP对像的功?br />*/
function Node(key,value){//键值对对象
(tng) (tng) (tng) this.key=key;
(tng) (tng) (tng) this.value=value;
}
function Map(){//Mapc?br /> (tng) (tng) (tng) this.nodes=new Array();
}
Map.prototype.put=function(key,value){//往容器中加入一个键值对
(tng) (tng) (tng) (tng) (tng) (tng) (tng) for(var i=0;i<this.nodes.length;i++)
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) if(this.nodes[i].key==key){//如果键值已存在Q则putҎ(gu)为更新已有数?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) this.nodes[i].value=value;
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) return;
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) (tng) (tng) var node=new Node(key,value);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) this.nodes.push(node);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) return;
}//put
(tng) (tng)
Map.prototype.get=function(key){//获取指定键的?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) for(var i=0;i<this.nodes.length;i++)
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) if(this.nodes[i].key==key)
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) return this.nodes[i].value;
(tng) (tng) (tng) (tng) (tng) (tng) (tng) return null;
}//get
(tng) (tng) (tng) (tng)
Map.prototype.size=function(){//获取容器中对象的个数
(tng) (tng) (tng) (tng)return this.nodes.length;
}//size
(tng) (tng) (tng) (tng) (tng) (tng) (tng)
Map.prototype.clear=function(){//清空容器
(tng) (tng) (tng) (tng)while(this.nodes.length>0)
(tng) (tng) (tng) (tng) (tng) (tng) this.nodes.pop(); (tng) (tng) (tng) (tng) (tng)
}//clear
(tng)
Map.prototype.remove=function(key){//删除指定?br /> (tng) (tng) (tng) (tng)for(var i=0;i<this.nodes.length;i++)
(tng) (tng) (tng) (tng) (tng) (tng) if(this.nodes[i].key==key){
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) if(i>0)
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) var nodes1=this.nodes.concat(this.nodes.slice(0,i-1),this.nodes.slice(i+1));
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) else//删除的是W一个元?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) var nodes1=nodes.slice(1);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) this.nodes=nodes1;
(tng) (tng) (tng) (tng) (tng) (tng) }
}//remove
(tng) (tng) (tng)
Map.prototype.isEmpty=function(){//是否为空
(tng) (tng) (tng) (tng)if(this.nodes.length==0)
(tng) (tng) (tng) (tng) (tng) return true;
(tng) (tng) (tng) (tng)else
(tng) (tng) (tng) (tng) (tng) return false;
}//isEmpty
(tng) (tng) (tng)
Map.prototype.toString=function(){
(tng) (tng) (tng) (tng) var str="[";
(tng) (tng) (tng) (tng) for(var i=0;i<this.nodes.length;i++){
(tng) (tng) (tng) (tng) (tng) (tng) (tng) if(i<this.nodes.length-1)
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) str=str+this.nodes[i].key+",";
(tng) (tng) (tng) (tng) (tng) (tng) else
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) str=str+this.nodes[i].key; (tng) (tng) (tng) (tng)
(tng) (tng) (tng)}
(tng) (tng) (tng) str=str+"]";
(tng) (tng) (tng) (tng)return str;
}
/// <summary>
/// DbConnectionPool 的摘要说?br />/// </summary>
namespace dbopr
{
(tng) (tng) (tng) public class DbConnectionPool
(tng) (tng) (tng) {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) //定义存放数据库链接的队列
(tng) (tng) (tng) (tng) (tng) (tng) (tng) private static Queue connections=new Queue();
(tng) (tng) (tng) (tng) (tng) (tng) (tng) //数据库参?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) private static string ConnString = ""; (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) //链接字符?/p>
(tng) (tng) (tng) (tng) (tng) (tng) (tng) //链接池参?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) private static int InitSize = 20; (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) //初始化链接池大小
(tng) (tng) (tng) (tng) (tng) (tng) (tng) private static int MaxSize = 100; (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) //最大链接数
(tng) (tng) (tng) (tng) (tng) (tng) (tng) private static int QueueSize = 50; (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) //队列中最大维护的链接?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) private static int ConnNum = 0; (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) //pȝl护的链接L
(tng) (tng) (tng) (tng) (tng) (tng) (tng) //定义数据库类型,1表示为SqlServer数据库,2表示其它的OLE DBQ默认ؓ(f)SqlServer
(tng) (tng) (tng) (tng) (tng) (tng) (tng) private static int (tng) DbType = 1;
(tng) (tng) (tng) (tng) (tng) (tng) (tng) public static int DbType
(tng) (tng) (tng) (tng) (tng) (tng) (tng) {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) set
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) DbType = value;
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) (tng) (tng) private DbConnectionPool()
(tng) (tng) (tng) (tng) (tng) (tng) (tng) {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) try{
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) ConnString = Configuration.connectionStrings["DbSource"].connectionString;
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) InitSize = int.Parse(Configuration.connectionStrings["InitSize"].connectionString);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) MaxSize = int.Parse(Configuration.connectionStrings["MaxSize"].connectionString);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) QueueSize = int.Parse(Configuration.connectionStrings["QueueSize"].connectionString);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) DbType = int.Parse(Configuration.connectionStrings["DbType"].connectionString);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) initPool();
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) catch(Exception e) {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) (tng) (tng)
(tng) (tng) (tng) (tng) (tng) (tng) (tng) //初始化链接池
(tng) (tng) (tng) (tng) (tng) (tng) (tng) private static void initPool(){
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) int i;
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) for (i = 1; i <= InitSize; i++) {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) if (DbType == 1)
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) connections.Enqueue(newSqlConn());
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) else
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) connections.Enqueue(newOleConn());
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) (tng) (tng) //获取一个Sql Server链接对象
(tng) (tng) (tng) (tng) (tng) (tng) (tng) private static SqlConnection newSqlConn()
(tng) (tng) (tng) (tng) (tng) (tng) (tng) {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) ConnNum++;
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) return new SqlConnection(ConnString);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) (tng) (tng)
(tng) (tng) (tng) (tng) (tng) (tng) (tng) //获取一个OLE DB链接对像
(tng) (tng) (tng) (tng) (tng) (tng) (tng) private static OleDbConnection newOleConn()
(tng) (tng) (tng) (tng) (tng) (tng) (tng) {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) ConnNum++;
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) return new OleDbConnection(ConnString);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) (tng) (tng) //获取一个数据库链接
(tng) (tng) (tng) (tng) (tng) (tng) (tng) public static IDbConnection getConn() {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) if (connections.Count == 0) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) //如果队列中链接用完,则新Z个链接放入队?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) if (ConnNum > MaxSize) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) //如果当前zd链接辑ֈ最大,则等待链?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) return null;
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) else
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) if (DbType == 1)
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) connections.Enqueue(newSqlConn());
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) else
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) connections.Enqueue(newOleConn());
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) return connections.Dequeue();
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) else
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) return connections.Dequeue();
(tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) (tng) (tng) //释放一个活q链?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) public static void reConn(IDbConnection conn) {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) if (connections.Count > QueueSize) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) //如果队列中元素个数已辑ֈ最大,则关闭链?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) conn.Close();
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) else
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) connections.Enqueue(conn);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) (tng) (tng) //销毁链接池
(tng) (tng) (tng) (tng) (tng) (tng) (tng) public static void ClearPool() {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) while(connections.Count>0)
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (IDbConnection)connections.Dequeue().Close();
(tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) }
}
2.链接生成c?br />using System;
using System.Data;
using System.Data.SqlClient;
using System.Data.OleDb;
using System.Configuration;
using System.Web;
/// <summary>
/// DbConn 的摘要说?br />/// </summary>
namespace dbopr
{
(tng) (tng) (tng) public class DbConnection
(tng) (tng) (tng) {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) private static IDbConnection conn;
(tng) (tng) (tng) (tng) (tng) (tng) (tng)
(tng) (tng) (tng) (tng) (tng) (tng) (tng) public DbConnection()
(tng) (tng) (tng) (tng) (tng) (tng) (tng) {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) //
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) // TODO: 在此处添加构造函数逻辑
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) //
(tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) (tng) (tng) public static SqlConnection getSqlConn()
(tng) (tng) (tng) (tng) (tng) (tng) (tng) {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) //获取链接池中的Sql Server的链?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) conn = DbConnectionPool.getConn();
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) return (SqlConnection)conn;
(tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) (tng) (tng) public static OleDbConnection getOleConn() {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) //获取其它OLE DB的链?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) conn = DbConnectionPool.getConn();
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) return (OleDbConnection)conn;
(tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) (tng) (tng) (tng) (tng) public static void Close() {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) //攑֛用过的链?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) DbConnectionPool.reConn(conn);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) }
(tng) (tng) (tng) }
}