JSP新闻系统之六 后台登陆页面

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
	String path = request.getContextPath();
	String basePath = request.getScheme() + "://"
			+ request.getServerName() + ":" + request.getServerPort()
			+ path + "/";
%>

用户登陆
		
			
			
				
				
					
					
						
						

							

						

						
							
							
								
								
									
									
										
										
											
											
												
												
													
													
														 
													

													
														 
													

												

												
													
													
														 
													

													
														
														
															
															
																
																
																	
																	
																		
																		

																			用户名：
																		

																	

																	
																		
																	

																

																
																	
																	
																		
																		

																			密　码：
																		

																	

																	
																		
																	

																

																
																	
																	
																		
																		

																			
																		

																	

																	
																		两周内自动登录
																	

																

																
																	
																	
																		 
																	

																	
																		
																	

																

															

														

													

												

												
													
													
														 
													

													
														 
													

												

											

										

									

								

							

						

						

							

						

					

				

			

		

登陆action页面

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ page import="com.news.entity.*,com.news.dao.*,com.news.dao.impl.*" %>

<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

My JSP 'login_action.jsp' starting page<%
    	//获取页面数据
    	request.setCharacterEncoding("utf-8");
    	String username=request.getParameter("username");
    	String userpwd=request.getParameter("userpwd");
    	//调用Dao方法进行查询;
    	UserDao ud=new UserDaoImpl();
    	User user=ud.queryUserByNameAndPwd(username,userpwd);
    	if(user!=null){//user:是一个登陆对象
    		//如果登陆成功，则设置当前的session
    		session.setAttribute("user",user);
    		response.sendRedirect("welcome.jsp");//成功到欢迎页面;
    	}else{
    		session.setAttribute("msg","登陆失败，请检查用户名和密码");
    		response.sendRedirect("login.jsp");//失败还回登陆页面
    	}
     %>