当前位置: 首页 > 图文教程 > 网络编程 > ASP.NET > ASP.NET创建XML Web服务全接触(12)

ASP.NET
赫赫大名的A*寻路算法(vb.net版本)
asp.net(c#)下Jmai去说明 使用与下载
[原创]完美解决Could not load file or assembly ''AjaxPro.2'' or one of its dependencies. 拒绝访问。
asp.net下gridview 批量删除的实现方法
用CSS实现图片倾斜 只支持IE
.net get set用法小结
vs 不显示行号的操作方法
ASP.NET页面进行GZIP压缩优化的几款压缩模块的使用简介及应用测试!(附源码)
ASP.Net不执行问题一解
asp.net 无限分类
让VS2008对JQuery语法的智能感知更完美一点
扩展方法ToJSON() and ParseJSON()
asp.net下PageMethods使用技巧
Linq to SQL Delete时遇到问题的解决方法
实现ASP.NET多文件上传程序代码
ASP.NET AJAX 1.0 RC开发10分钟图解
asp.net get set用法
ASP.NET下使用WScript.Shell执行命令
asp.net2.0实现邮件发送(测试成功)
Asp.net 无限级分类实例代码

ASP.NET创建XML Web服务全接触(12)


出处:互联网   整理: 软晨网(RuanChen.com)   发布: 2009-11-03   浏览: 72 ::
收藏到网摘: n/a

管理Web服务状态(2)

    

  在下面示例中,appMyServiceUsage状态变量被访问来递增其值。下面的代码示例是一个使用两个XML Web服务方法的XML Web服务:ServerUsage和PerSessionServerUage。ServerUsage是一个点击计数器,用于访问ServerUsage XML Web服务方法时计数,而不管客户端如何与XML Web服务方法通信。例如,如果三个客户端连续地调用ServerUsage XML Web服务方法,最后一个接收一个返回值3。而PerSessionServiceUsage则是用于一个特别的客户端会话的计数器。如果三个客户端连续地访问PerSessionServiceUsage,每个客户端都会在第一次调用的时候接收到相同的结果。

[C#]
<%@ WebService Language="C#" Class="ServerUsage" %>
using System.Web.Services;

public class ServerUsage : WebService {
 [ WebMethod(Description="Number of times this service has been accessed.") ]
 public int ServiceUsage() {
  // If the XML Web service method hasn't been accessed,
  // initialize it to 1.
  if (Application["appMyServiceUsage"] == null)
  {
   Application["appMyServiceUsage"] = 1;
  }
  else
  {
   // Increment the usage count.
   Application["appMyServiceUsage"] = ((int) Application["appMyServiceUsage"]) + 1;
  }
  return (int) Application["appMyServiceUsage"];
 }

 [ WebMethod(Description="Number of times a particualr client session has accessed this XML Web service method.",EnableSession=true) ]
 public int PerSessionServiceUsage() {
  // If the XML Web service method hasn't been accessed, initialize
  // it to 1.
  if (Session["MyServiceUsage"] == null)
  {
   Session["MyServiceUsage"] = 1;
  }
  else
  {
   // Increment the usage count.
   Session["MyServiceUsage"] = ((int) Session["MyServiceUsage"]) + 1;
  }
  return (int) Session["MyServiceUsage"];
 }
}

[Visual Basic]
<%@ WebService Language="VB" Class="ServerUsage" %>
Imports System.Web.Services

Public Class ServerUsage
Inherits WebService

<WebMethod(Description := "Number of times this service has been accessed.")> _
Public Function ServiceUsage() As Integer
' If the XML Web service method hasn't been accessed, initialize
' it to 1.
If Application("appMyServiceUsage") Is Nothing Then
 Application("appMyServiceUsage") = 1
Else
 ' Increment the usage count.
 Application("appMyServiceUsage") = _
 CInt(Application("appMyServiceUsage")) + 1
End If
Return CInt(Application("appMyServiceUsage"))
End Function

<WebMethod(Description := "Number of times a particular client session has accessed this XML Web service method.", EnableSession := True)> _
Public Function PerSessionServiceUsage() As Integer
' If the XML Web service method hasn't been accessed,
' initialize it to 1.
If Session("MyServiceUsage") Is Nothing Then
 Session("MyServiceUsage") = 1
Else
 ' Increment the usage count.
 Session("MyServiceUsage") = CInt(Session("MyServiceUsage")) + 1
End If
 Return CInt(Session("MyServiceUsage"))
End Function

End Class