使用SSM框架 实现登录、注册、分页和增删改操作
1.
applicaltion.xml
2.
db.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssm_db
jdbc.username=root
jdbc.password=123456
jdbc.minIdle=3
jdbc.maxActive=20
jdbc.initialSize=3
jdbc.maxWait=10000
3.
log4j.properties
# Global logging configuration
log4j.rootLogger=ERROR, stdout
# MyBatis logging configuration...
log4j.logger.com.xin=TRACE
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n
4.
mybatis-config.xml
5.
spring-dao.xml
6.
spring-db.xml
7.*
spring-tx.xml
8.
springmvc-config.xml
9.
web.xml
contextConfigLocation
classpath:applicationContext.xml
org.springframework.web.context.ContextLoaderListener
springmvc
org.springframework.web.servlet.DispatcherServlet
contextConfigLocation
classpath:springmvc-config.xml
1
springmvc
/
encodingFilter
org.springframework.web.filter.CharacterEncodingFilter
encoding
utf-8
encodingFilter
/*
10.User实体类
package com.xin.po;
public class User {
private Integer user_id;
private String user_name;
private String password;
private Integer user_age;
public Integer getUser_id() {
return user_id;
}
public void setUser_id(Integer user_id) {
this.user_id = user_id;
}
public String getUser_name() {
return user_name;
}
public void setUser_name(String user_name) {
this.user_name = user_name;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public Integer getUser_age() {
return user_age;
}
public void setUser_age(Integer user_age) {
this.user_age = user_age;
}
@Override
public String toString() {
return "User [user_id=" + user_id + ", user_name=" + user_name
+ ", password=" + password + ", user_age=" + user_age + "]";
}
}
11.page实体类
package com.xin.po;
import java.util.List;
public class page {
private int currPage;//当前页数
private int pageSize;//每页显示的记录数
private int totalCount;//总记录数
private int totalPage;//总页数
private List lists;//每页的显示的数据
public int getCurrPage() {
return currPage;
}
public void setCurrPage(int currPage) {
this.currPage = currPage;
}
public int getPageSize() {
return pageSize;
}
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
public int getTotalCount() {
return totalCount;
}
public void setTotalCount(int totalCount) {
this.totalCount = totalCount;
}
public int getTotalPage() {
return totalPage;
}
public void setTotalPage(int totalPage) {
this.totalPage = totalPage;
}
public List getLists() {
return lists;
}
public void setLists(List lists) {
this.lists = lists;
}
@Override
public String toString() {
return "page [currPage=" + currPage + ", pageSize=" + pageSize
+ ", totalCount=" + totalCount + ", totalPage=" + totalPage
+ ", lists=" + lists + "]";
}
}
12.UserDao接口
package com.xin.dao;
import java.util.HashMap;
import java.util.List;
import com.xin.po.User;
import com.xin.po.page;
public interface UserDao {
/***
* 根据编号查询客户信息
* @param id 用户编号
* @return 客户信息
*/
public List list();//查询所有
public User get(Integer id);//查询单条
public User getLogin(User user);//登录页
public Integer delete(Integer id);// 删除
public Integer update(User user); // 修改
public Integer add(User user);// 添加
// 查询用户记录总数
public int getUserCount(page p);
/**
* 查询用户记录总数
* @return
*/
int selectCount();
//分页操作，调用findByPage limit分页方法
public List findByPage(HashMap map);
//page findByPage(int currentPage);
}
13.UserService接口
package com.xin.service;
import java.util.List;
import com.xin.po.User;
import com.xin.po.page;
public interface UserService {
public List list();//查询所有
public User get(Integer id);//查询单条
public Integer delete(Integer id);// 删除
public Integer update(User user); // 修改
public Integer add(User user);// 添加
public User getLogin(User user);//登录页
public Integer getUserCount(page p);
/**
* 查询用户记录总数
* @return
*/
int selectCount();
//分页操作，调用findByPage limit分页方法
public page findByPage(int currentPage);
//List findByPage(HashMap map);
}
## 14.UserServiceImpl实现接口
package com.xin.service.impl;
import java.util.HashMap;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import com.xin.dao.UserDao;
import com.xin.po.User;
import com.xin.po.page;
import com.xin.service.UserService;
@Service
@Transactional
public class UserServiceImpl implements UserService{
@Autowired
private UserDao userDao;
@Override
public Integer delete(Integer id) {
// TODO Auto-generated method stub
return userDao.delete(id);
}
@Override
public Integer update(User user) {
// TODO Auto-generated method stub
return userDao.update(user);
}
@Override
public Integer add(User user) {
// TODO Auto-generated method stub
return userDao.add(user);
}
@Override
public List list() {
// TODO Auto-generated method stub
return userDao.list();
}
@Override
public User get(Integer id) {
// TODO Auto-generated method stub
return userDao.get(id);
}
@Override
public User getLogin(User user) {
// TODO Auto-generated method stub
return userDao.getLogin(user);
}
@Override
public Integer getUserCount(page p) {
// TODO Auto-generated method stub
return userDao.getUserCount(p);
}
/*@Override
public List findByPage(HashMap map) {
// TODO Auto-generated method stub
return userDao.findByPage(map);
}*/
@Override
public page findByPage(int currentPage) {
HashMap map = new HashMap();
page pageBean = new page();
//封装当前页数
pageBean.setCurrPage(currentPage);
//每页显示的数据
int pageSize=5;
pageBean.setPageSize(pageSize);
//封装总记录数
int totalCount = userDao.selectCount();
pageBean.setTotalCount(totalCount);
//封装总页数
double tc = totalCount;
Double num =Math.ceil(tc/pageSize);//向上取整
pageBean.setTotalPage(num.intValue());
map.put("start",(currentPage-1)*pageSize);
map.put("size", pageBean.getPageSize());
//封装每页显示的数据
List lists = userDao.findByPage(map);
pageBean.setLists(lists);
return pageBean;
}
@Override
public int selectCount() {
// TODO Auto-generated method stub
return userDao.selectCount();
}
}
15.controller控制器
package com.xin.controller;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpSession;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpRequest;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;
import com.xin.po.User;
import com.xin.po.page;
import com.xin.service.UserService;
@Controller
@RequestMapping("/user")
public class CustomerController {
@Autowired
private UserService userService;
@RequestMapping("/setlogin")
public String setFindUserById(){
return "login";
}
//登录页
@RequestMapping("/getlogin")
public ModelAndView getLogin(HttpSession session,User user,Model model){
User u=userService.getLogin(user);
if(u==null){
session.setAttribute("msg", "登录失败,请重新登录");
/*model.addAttribute("msg", );*/
ModelAndView mav=new ModelAndView("redirect:setlogin");
return mav;
}
if (user.getUser_name()!=null&&user.getPassword()!=null&&user.getUser_name().equals(u.getUser_name())&&user.getPassword().equals(u.getPassword())) {
model.addAttribute("msg", "登录成功");
session.setAttribute("msg", user.getUser_name());
ModelAndView mav=new ModelAndView("redirect:getfind");
return mav;
}
model.addAttribute("msg", "登录失败,请重新登录");
ModelAndView mav=new ModelAndView("redirect:setlogin");
return mav;
}
//查询所有的页面
@RequestMapping("getfind")
public ModelAndView list(){
ModelAndView mav = new ModelAndView();
List list = userService.list();
mav.addObject("list", list);
mav.setViewName("main");
return mav;
}
//删除页面
@RequestMapping("/delete")
public ModelAndView delete(Integer id){
userService.delete(id);
ModelAndView mav=new ModelAndView("redirect:getfind");
return mav;
}
// 单条明细修改跳转到修改页面
@RequestMapping("/editgo")
public ModelAndView editgo(Integer id) {
User user = userService.get(id);
ModelAndView mav = new ModelAndView("editgo");
mav.addObject("user", user);
return mav;
}
//修改页面
@RequestMapping("/update")
public ModelAndView update(User user){
userService.update(user);
ModelAndView mav=new ModelAndView("redirect:getfind");
return mav;
}
// 添加 跳转 到添加页面
@RequestMapping("addgo")
public ModelAndView addgo() {
ModelAndView mav = new ModelAndView("add");
return mav;
}
// 添加数据
@ResponseBody
@RequestMapping("toadd")
public ModelAndView add(User user) {
userService.add(user);
ModelAndView mav = new ModelAndView("redirect:getfind");
return mav;
}
@RequestMapping("/main")
public String main(@RequestParam(value="currentPage",defaultValue="1",required=false)int currentPage,Model model){
model.addAttribute("pagemsg", userService.findByPage(currentPage));//回显分页数据
return "main";
}
}
16.LoginInterceptor拦截器
package com.xin.interceptor;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
public class LoginInterceptor implements HandlerInterceptor{
@Override
public void afterCompletion(HttpServletRequest arg0,
HttpServletResponse arg1, Object arg2, Exception arg3)
throws Exception {
// TODO Auto-generated method stub
}
@Override
public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1,
Object arg2, ModelAndView arg3) throws Exception {
// TODO Auto-generated method stub
}
@Override
public boolean preHandle(HttpServletRequest arg0, HttpServletResponse arg1,
Object arg2) throws Exception {
String url=arg0.getRequestURI();
if (url.indexOf("/getlogin")!=0) {
return true;
}
Object name=arg0.getSession().getAttribute("user");
if (name!=null) {
return true;
}
arg0.setAttribute("msg","登录失败");
arg0.getRequestDispatcher("/WEB-INF/jsp/login.jsp").forward(arg0, arg1);
return false;
}
}
17.Mapper.xml
delete from tbl_user where user_id=#{user_id}
update tbl_user set user_name=#{user_name},user_age=#{user_age},password=#{password} where user_id=#{user_id}
insert into tbl_user(user_name,user_age,password) values(#{user_name},#{user_age},#{password})
18.注册页面 add.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
My JSP 'add.jsp' starting page
19.修改界面 editgo.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
My JSP 'editgo.jsp' starting page
20.查询界面 find.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
My JSP 'find.jsp' starting page
21.登录界面 login.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
My JSP 'login.jsp' starting page
${msg }
22.主页面 main.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
My JSP 'main.jsp' starting page
编号:
姓名：
密码：
年龄：
操作：
${user.user_id }
${user.user_name }
${user.password }
${user.user_age }
删除
修改
第${requestScope.pagemsg.currPage }/ ${requestScope.pagemsg.totalPage}页
总记录数：${requestScope.pagemsg.totalCount } 每页显示:${requestScope.pagemsg.pageSize}
[首页]
[上一页]
[下一页]
[尾页]