JAVA_WEB项目(结合Servlet+jsp+ckEditor编辑器+jquery easyui技术)实现新闻发布管理系统第二篇:登陆和注销功能实现
2014-09-21 16:15
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上一篇介绍了JAVA_WEB项目之新闻发布管理系统第一篇:前期环境准备,接下来是实现该系统的登陆和注销的功能。
下面就直接给出登陆界面的form表单提交的内容:
表单提交到后台的查看登陆名和密码的相关代码:
首先贴出解决全局网站编码的过滤
实体User:
Controlle层:
dao层:
登陆功能和注销的主要代码就在上面,接下来实现新闻发布,新闻修改,新闻删除功能的实现。整个系统的源码会在最后一篇介绍的博文中贴出下载链接。
下面就直接给出登陆界面的form表单提交的内容:
%String root=request.getContextPath(); %> <FORM id="form1" name="form1" onsubmit="javascript:return WebForm_OnSubmit();" action="<%=root%>/UserAction?action=Login" method="post"> <SCRIPT type=text/javascript> </SCRIPT> <SCRIPT src="login_files/WebResource.axd" type=text/javascript></SCRIPT> <SCRIPT src="login_files/WebResource(1).axd" type=text/javascript></SCRIPT> <SCRIPT src="login_files/ScriptResource.axd" type=text/javascript></SCRIPT> <SCRIPT src="login_files/ScriptResource(1).axd" type=text/javascript></SCRIPT> <SCRIPT type=text/javascript> function WebForm_OnSubmit() { if (typeof(ValidatorOnSubmit) == "function" && ValidatorOnSubmit() == false) return false; return true; } </SCRIPT> <SCRIPT type=text/javascript> </SCRIPT> <DIV id=UpdatePanel1> <DIV id=div1 style="LEFT: 0px; POSITION: absolute; TOP: 0px; BACKGROUND-COLOR: #0066ff"></DIV> <DIV id=div2 style="LEFT: 0px; POSITION: absolute; TOP: 0px; BACKGROUND-COLOR: #0066ff"></DIV> <SCRIPT language=JavaScript> var speed=20; var temp=new Array(); var clipright=document.body.clientWidth/2,clipleft=0 for (i=1;i<=2;i++){ temp[i]=eval("document.all.div"+i+".style"); temp[i].width=document.body.clientWidth/2; temp[i].height=document.body.clientHeight; temp[i].left=(i-1)*parseInt(temp[i].width); } function openit(){ clipright-=speed; temp[1].clip="rect(0 "+clipright+" auto 0)"; clipleft+=speed; temp[2].clip="rect(0 auto auto "+clipleft+")"; if (clipright<=0) clearInterval(tim); } tim=setInterval("openit()",100); </SCRIPT> <DIV> </DIV> <DIV> <TABLE cellSpacing=0 cellPadding=0 width=900 align=center border=0> <TBODY> <TR> <TD style="HEIGHT: 105px"><IMG src="login_files/login_1.gif" border=0></TD></TR> <TR> <TD background=login_files/login_2.jpg height=300> <TABLE height=300 cellPadding=0 width=900 border=0> <TBODY> <TR> <TD colSpan=2 height=35></TD></TR> <TR> <TD width=360></TD> <TD> <TABLE cellSpacing=0 cellPadding=2 border=0> <TBODY> <TR> <TD style="HEIGHT: 28px" width=80>登 录 名:</TD> <TD style="HEIGHT: 28px" width=150><INPUT id=txtName style="WIDTH: 130px" name=username></TD> <TD style="HEIGHT: 28px" width=370><SPAN id=RequiredFieldValidator3 style="FONT-WEIGHT: bold; VISIBILITY: hidden; COLOR: white">请输入登录名</SPAN></TD></TR> <TR> <TD style="HEIGHT: 28px">登录密码:</TD> <TD style="HEIGHT: 28px"><INPUT id=txtPwd style="WIDTH: 130px" type=password name=password></TD> <TD style="HEIGHT: 28px"><SPAN id=RequiredFieldValidator4 style="FONT-WEIGHT: bold; VISIBILITY: hidden; COLOR: white">请输入密码</SPAN></TD></TR> <TD style="HEIGHT: 18px"></TD> <TD style="HEIGHT: 18px"></TD> <TD style="HEIGHT: 18px"></TD></TR> <TR> <TD></TD> <TD><INPUT id=btn style="BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH: 0px; BORDER-RIGHT-WIDTH: 0px" onclick='javascript:WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions("btn", "", true, "", "", false, false))' type=image src="login_files/login_button.gif" name=btn> </TD></TR> <td></td><td>${message}</td> </TBODY></TABLE></TD></TR></TBODY></TABLE></TD></TR> <TD><IMG src="login_files/login_3.jpg" border=0></TD></TR> </TBODY></TABLE></DIV></DIV> <SCRIPT type=text/javascript> <!-- var Page_Validators = new Array(document.getElementById("RequiredFieldValidator3"), document.getElementById("RequiredFieldValidator4")); // --> </SCRIPT>
表单提交到后台的查看登陆名和密码的相关代码:
首先贴出解决全局网站编码的过滤
实体User:
package com.news.domain; public class User { private Integer user_id; private String username; private String password; public Integer getUser_id() { return user_id; } public void setUser_id(Integer user_id) { this.user_id = user_id; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public User(Integer user_id, String username, String password) { super(); this.user_id = user_id; this.username = username; this.password = password; } public User() { super(); // TODO Auto-generated constructor stub } }
Controlle层:
package com.news.action; import java.io.IOException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import com.news.domain.User; import com.news.service.UserService; public class UserAction extends BaseAction{ private UserService service=new UserService(); public void Login(HttpServletRequest request,HttpServletResponse response){ service.findUser(request, response); } public void Exit(HttpServletRequest request,HttpServletResponse response){ try { HttpSession session= request.getSession(false); User user= (User) session.getAttribute("user"); if(user!=null){ session.removeAttribute("user"); } response.getWriter().write("<script>window.parent.location.href='"+request.getContextPath() +"/login.jsp"+"';</script>"); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } }
package com.news.service; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import com.news.dao.UserDao; import com.news.domain.User; public class UserService { private UserDao userDao=new UserDao(); public void findUser(HttpServletRequest request,HttpServletResponse response){ User user= new User(); user.setUsername(request.getParameter("username")); user.setPassword(request.getParameter("password")); System.out.println(user.getPassword()+","+user.getUsername()); User uu = null; try{ if(user!=null){ uu=userDao.find(user); if(uu==null) { request.setAttribute("message", "用户名或密码错误"); request.getRequestDispatcher("/login.jsp").forward(request, response); return; } request.getSession().setAttribute("user", uu); request.getRequestDispatcher("/WEB-INF/jsps/index.jsp").forward(request, response); } } catch (Exception e) { throw new RuntimeException(e); } } }service层:
package com.news.service; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import com.news.dao.UserDao; import com.news.domain.User; public class UserService { private UserDao userDao=new UserDao(); public void findUser(HttpServletRequest request,HttpServletResponse response){ User user= new User(); user.setUsername(request.getParameter("username")); user.setPassword(request.getParameter("password")); System.out.println(user.getPassword()+","+user.getUsername()); User uu = null; try{ if(user!=null){ uu=userDao.find(user); if(uu==null) { request.setAttribute("message", "用户名或密码错误"); request.getRequestDispatcher("/login.jsp").forward(request, response); return; } request.getSession().setAttribute("user", uu); request.getRequestDispatcher("/WEB-INF/jsps/index.jsp").forward(request, response); } } catch (Exception e) { throw new RuntimeException(e); } } }
dao层:
package com.news.dao; import java.sql.Connection; import java.sql.SQLException; import org.apache.commons.dbutils.DbUtils; import org.apache.commons.dbutils.QueryRunner; import org.apache.commons.dbutils.handlers.BeanHandler; import com.news.domain.User; import com.news.utils.JdbcUtils; public class UserDao { public User find(User user) { Connection conn=null; try { conn=JdbcUtils.getConnection(); QueryRunner runner=new QueryRunner(); String sql="select * from tb_user where username=? and password=?"; Object[] params={user.getUsername(),user.getPassword()}; User u = (User) runner.query(conn, sql, params, new BeanHandler(User.class)); return u; } catch (SQLException e) { throw new RuntimeException(e); }finally{ DbUtils.closeQuietly(conn); } } }
登陆功能和注销的主要代码就在上面,接下来实现新闻发布,新闻修改,新闻删除功能的实现。整个系统的源码会在最后一篇介绍的博文中贴出下载链接。
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