userservice.cs

通用用户系统通用用户系统通用用户系统通用用户系统

namespace Cjjer{
using System;
using System.Web.Services;
using System.Xml;
using System.Xml.XPath;
[WebService (Name="WebsCjjer",Description="一个验证用户登陆的web服务",Namespace="http://www.cjjer.com/webs/")]
public class UserService{
	[WebMethod (Description ="输入用户名和密,返回权限Int值，0表示失败",MessageName="Login")]
	public int Login(string UserName,string UserPassword){
		return User.Check(UserName,UserPassword);
	}

	[WebMethod (Description ="新增用户名和密码，返回结果,0表示失败",MessageName="AddNew")]
	public int AddNew(string UserName,string UserPassword){
		if(User.Check(UserName,UserPassword)!=0) return 0;
		return 1;
	}

};
public class User{

	const string _XmlUserData ="data\\user.xml";
	public static string AppPath{
		get{
			string tempstr;
			try{
				tempstr = System.Web.HttpContext.Current.Server.MapPath(@"~");
			}catch(System.Exception){//屏蔽.NET 版本不同时的错误信息
				tempstr = System.Web.HttpContext.Current.Server.MapPath(@".");
			}
			return tempstr+"\\";
		}
	}
	public static string XmlUserData{
		get{return AppPath+_XmlUserData;}
	}
	public static int Check(string username,string userpassword){
		int int_Re = 0;
		try{
			string xpath = @"descendant::user[name='"+username+"' and password='"+CodeString(userpassword)+"']/level";
			int_Re= System.Convert.ToInt32(SelectSingleNodeValue(XmlUserData,xpath));
		}catch(System.Exception){
			int_Re = 0;
		}
		return int_Re;
	}
	public static string  CodeString(string args){
		return System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(args, "Md5");//SHA1
	}
	public static string SelectSingleNodeValue(string FullXmlPath,string XPathString){
		string returnstr =null;
		XmlDocument doc = new XmlDocument();
		try{
			doc.Load(FullXmlPath);
			XmlNode objNode = doc.SelectSingleNode(XPathString);
			returnstr = objNode.LastChild.InnerText;
		}catch(Exception){}
		return returnstr;
	}
};
}