超市订单管理系统SMBMS - 密码修改模块实现

密码修改

功能实现流程编写密码修改前端代码UserDao接口UserDao接口实现类UserService接口UserService接口实现类Servlet实现复用

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
<%@include file="/jsp/common/head.jsp"%>

            

                你现在所在的位置是:
                密码修改页面
            
            

                

                    
                    
                    
${message}
                    

                        旧密码：
                         
						
                    
                    

                        新密码：
                         
						
                    
                    

                        确认新密码：
                         
						
                    
                    

                        
                        
                    
                
            
        
    
<%@include file="/jsp/common/foot.jsp" %>

    //修改当前用户密码
    public int updatePwd(Connection connection,int id,int password) throws SQLException;

  //修改当前用户密码
    public int updatePwd(Connection connection, int id, int password) throws SQLException {
        PreparedStatement pstm = null;
        int execute = 0;

        if (connection!=null) {
            String sql = "update smbms_user set userPassword = ? where id = ?";
            Object params[] = {password, id};
            execute = baseDao.execute(connection, pstm, sql, params);
            baseDao.closeResource(null, pstm, null);
        }
        return execute;
    }
}

//根据用户id修改密码
    public boolean updatePwd(int id, int pwd);

public boolean updatePwd(int id, int pwd) {
        Connection connection = null;
        boolean flag = false;

        //修改密码
        try {
            connection = baseDao.getConnection();
            if (userDao.updatePwd(connection,id,pwd)>0){
                flag = true;
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }finally {
            baseDao.closeResource(connection,null,null);
        }
        return flag;
    }
}

package com.yang.servlet.user;

import com.mysql.jdbc.StringUtils;
import com.yang.pojo.User;
import com.yang.service.user.UserService;
import com.yang.service.user.UserServiceImpl;
import com.yang.util.Constants;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

//实现servlet复用
public class UserServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        String method = req.getParameter("method");
        if (method.equals("savepwd")&&method!=null){
            this.updatePwd(req,resp);
        }
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req, resp);
    }
    public void updatePwd(HttpServletRequest req, HttpServletResponse resp){
        //从session里面拿ID;
        Object o = req.getSession().getAttribute(Constants.USER_SESSION);
        String newpassword = req.getParameter("newpassword");

        boolean flag = false;

        if (o!=null&& !StringUtils.isNullOrEmpty(newpassword)){
            UserService userService = new UserServiceImpl();
            flag = userService.updatePwd(((User) o).getId(), newpassword);
            if (flag){
                req.setAttribute("message","修改密码成功，请退出，使用新密码登录");
                //密码修改成功，移除当前session
                req.getSession().removeAttribute(Constants.USER_SESSION);
            }else {
                req.setAttribute("message","密码修改失败");

            }
        }else {
            req.setAttribute("message","新密码有问题");
        }
        req.getRequestDispatcher("pwdmodify.jsp").forward(req,resp);
    }
}