Struts2-修改数据

 1 <body>
 2 用户信息：<br><br>
 3 <%
 4 List<User> lu = (List<User>)request.getAttribute("userlist");
 5 %>
 6 <table>
 7 <tr>
 8 <th>用户名</th>
 9 <th>姓名</th>
10 <th>性别</th>
11 <th>生日</th>
12 <th>操作</th>
13 </tr>
14 <%
15 for(User u:lu){
16     int a = u.getUserid();
17     String b = u.getUsername();
18     String c = u.getUsersex();
19     Date d = u.getUserbirthday();
20 %>
21 <tr>
22 <td><%out.print(a); %></td>
23 <td><%out.print(b); %></td>
24 <td><%out.print(c); %></td>
25 <td><%out.print(d); %></td>
26 <td><a href="deleteUser?userid=<%out.print(a); %>">删除</a>/
27 <a href="updateUser?userid=<%out.print(a); %>">修改</a></td>
28 </tr>
29 <%
30 }
31 %>
32 </table>
33 </body>

 1 <body>
 2 <%
 3 User u = (User)request.getAttribute("user");
 4 out.print(u);
 5 %>
 6 <form action="delete" method="post">
 7 用户名：<input type="text" value="<%out.print(u.getUserid());%>" name="user.userid"><br><br>
 8 姓名：<input type="text" value="<%out.print(u.getUsername());%>" name="user.username"><br><br>
 9 性别：<input type="text" value="<%out.print(u.getUsersex());%>" name="user.usersex"><br><br>
10 生日：<input type="text" value="<%out.print(u.getUserbirthday());%>" name="user.userbirthday"><br><br>
11 <input type="submit" value="提交">
12 </form>
13 
14 </body>

1 <!-- 修改用户 -->
2 <action name="updateUser" class="com.hq.action.UserAction" method="selectDan">
3 <result>WEB-INF/pages/delete.jsp</result>
4 <result name="fail">WEB-INF/pages/fail.jsp</result>
5 </action>
6 <action name="delete" class="com.hq.action.UserAction" method="updateDan">
7 <result type="redirectAction">selectUser</result>
8 <result name="fail">WEB-INF/pages/fail.jsp</result>
9 </action>

 1     public String selectDan(){
 2         String rtn = "fail";
 3         try{
 4             HttpServletRequest hsr = ServletActionContext.getRequest();
 5             String uid = hsr.getParameter("userid");
 6             int userid = Integer.parseInt(uid);
 7             User u = new UserService().selectDan(userid);
 8             hsr.setAttribute("user", u);
 9             rtn = "success";
10         }catch(Exception e){
11             e.printStackTrace();
12         }
13         return rtn;
14     }
15     public String updateDan(){
16         String rtn ="fail";
17         try{
18             u1 = new UserService().updateUser(user);
19             rtn = "success";
20         }catch(Exception e){
21             e.printStackTrace();
22         }
23         return rtn;
24     }

1     // 修改
2     public User updateUser(User user){
3         return new UserDao().update(user);
4     }
5     // 单查
6     public User selectDan(int userid){
7         return new UserDao().selectUser(userid);
8     }

    public User update(User user){
        init();
        User u = (User)se.get(User.class, user.getUserid());
        u.setUsername(user.getUsername());
        u.setUsersex(user.getUsersex());
        u.setUserbirthday(user.getUserbirthday());
        desory();
        return u;
    }

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原文地址：https://www.cnblogs.com/jingzhenhua/p/6072352.html