checklogin.java

用JSP写的论坛源代码 走过路过的各位千万不要错过啊！！！！

package serv;

import java.io.*;

import java.util.Map;
import javax.servlet.*;
import javax.servlet.http.*;
import org.apache.commons.beanutils.BeanUtils;
public class checkLogin extends HttpServlet {

	public void doPost(HttpServletRequest request, HttpServletResponse response)
	throws ServletException, IOException 
			{
		
			ServletContext application=getServletContext();
			
			response.setContentType("text/html;charset=gb2312");
			request.setCharacterEncoding("gb2312");
			PrintWriter out = response.getWriter();
			HttpSession session=request.getSession();
			member newmember =new member();//表单bean对象newmember
			Map map=request.getParameterMap();
			try
			{
				BeanUtils.populate(newmember, map);
			}catch(Exception e){
				System.out.println("表单处理出错："+e);
			}
			String NUM=(String)session.getAttribute("LoginCode");
			
			String name=newmember.getUserName();
			String password=newmember.getUserPassword();
			String password2=newmember.getUserPassword2();
			String code=newmember.getUserCode();
			
			
			bbsuser user=new bbsuser();
			boolean bool=user.getUserInfo(name);
			if(bool==true)
			{
				if (name!=null&&name.length()!=0)
				{
					if(password!=null&&password.length()!=0)
					{
						if(password2!=null&&password2.length()!=0)
						{
							if(password.equals(password2))
							{
								if(!code.equals(NUM))
								{
									out.print("验证码填写不正确，请重新填写！");
									}
								else
								{   
									user.registryNewuser(newmember);
								
									RequestDispatcher go=application.getRequestDispatcher("/loginWelcome.jsp");
									go.forward(request,response);
									}
								
								}
							else
							{
								out.print("密码与确认密码不相同，请重新填写！");
							}
								
							}
						else
						{
							out.print("重复密码不能为空，请重新填写！");
							}
						}
					else
					{
						out.print("密码不能为空，请重新填写！");
						}
				}
				else
				{
					out.print("用户名不可以为空，请重新填写！");
					}
				
				
			}
			else if(bool==false)
			{   
				out.print(bool);
				out.print("此用户名已存在!");
			}
		
		}
	}