JSP实现登录与注册界面

JSP实现登录与注册界面

1、首页index.jsp

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>







	<%
	//接收是否登录成功数据
	String flag=request.getParameter("flag");
	if(flag==null){
		flag="";
	}
	if(flag.equals("sucessful")){
		String okname=(String)request.getAttribute("okname");
		%>
		<%=okname %>你好!/注销
		<% 
	}else{
		%>
		登录/
		注册
		<% 
	}
	%>
	

2、注册界面reg.jsp

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>







	

		

			

				
用户名:
				

			
			
			

				
密码:
				

			
			
			

				
确认密码:
				

			
			
			

				
性别:
				

				男
				女
				
			
			
			

				
兴趣:
				

				爬山
				钓鱼
				
			
			
			

				

				

			
		
		<%
		String strMess=request.getParameter("mess");
		if(strMess==null){
			strMess="";
		}
		%>
		<%=strMess %>
	
	

	
	

	
		 

	
		

	
	

3、注册成功，显示注册信息，showReg.jsp

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>







	<%
	request.setCharacterEncoding("utf-8");
	//接受数据
	String name=request.getParameter("username");
	String pwd=request.getParameter("password");
	String okPwd=request.getParameter("okPassword");
	String sex=request.getParameter("sex");
	String[] interest=request.getParameterValues("interest");
	//验证数据
	if(name==null||name.equals("")||pwd==null||pwd.equals("")||okPwd==null||okPwd.equals("")||sex==null||sex.equals("")||interest==null||interest.equals("")){
		%>
		
		
		
		<%
	}
	else if(!pwd.equals(okPwd)){
		%>
		
		
		
		<%
	}
	
	//处理数据
	//将String[]->String
	String strHobby="";
	for(int i=0;i
	恭喜您注册成功！以下为您的注册信息：
	

	用户名:<%=name %>
	

	密码:<%=pwd %>
	

	性别:<%=sex %>
	

	兴趣:<%=strHobby%>
	
	

4、登录界面login.jsp

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>








	
	

		

			
用户名:
			

		
		
		

			
密码：
			

		
		
		

			

			

		
	
	<%
		String strMess=request.getParameter("mess");
		if(strMess==null){
			strMess="";
		}
		%>
		<%=strMess %>

5、登录判断，loginProcess.jsp

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>







	

	<%!
	String flag="fail";
	%>
	<%
	request.setCharacterEncoding("utf-8");
	//接收数据
	String name=request.getParameter("username");
	String pwd=request.getParameter("password");
	//验证数据
	if(name==null||name.equals("")||pwd==null||pwd.equals("")){
		%>
		
		
		
		<%
	}else if(name.length()>15){
		%>
		
		
		
		<%
	}else{
		flag="sucessful";
		request.setAttribute("okname", name);
		%>
		
			
		
		<%
		
	}
	//处理数据
	%>