package com.zhongruan.bean;
import java.util.List;
public class PageInfo<T> {
private List<T> list;
private int totalPage;
private int size;
private int totalCount;
private int currentPage;
public List<T> getList() {
return list;
}
public void setList(List<T> list) {
this.list = list;
}
public int getTotalPage() {
return totalPage;
}
public void setTotalPage(int totalPage) {
this.totalPage = totalPage;
}
public int getSize() {
return size;
}
public void setSize(int size) {
this.size = size;
}
public int getTotalCount() {
return totalCount;
}
public void setTotalCount(int totalCount) {
this.totalCount = totalCount;
}
public int getCurrentPage() {
return currentPage;
}
public void setCurrentPage(int currentPage) {
this.currentPage = currentPage;
}
@Override
public String toString() {
return "PageInfo{" +
"list=" + list +
", totalPage=" + totalPage +
", size=" + size +
", totalCount=" + totalCount +
", currentPage=" + currentPage +
'}';
}
}
package com.zhongruan.bean;
public class User {
public User() {
}
public User(int id, String username, String password) {
this.id = id;
this.username = username;
this.password = password;
}
public User(String username, String password) {
this.username = username;
this.password = password;
}
private int id;
private String username;
private String password;
public int getId() {
return id;
}
public void setId(int id) {
this.id = 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;
}
@Override
public String toString() {
return "User{" +
"id=" + id +
", username='" + username + '\'' +
", password='" + password + '\'' +
'}';
}
}
package com.zhongruan.controller;
import com.zhongruan.bean.PageInfo;
import com.zhongruan.bean.User;
import com.zhongruan.service.IUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpSession;
import java.util.List;
@Controller
@RequestMapping("/user")
public class UserController {
@Autowired
private IUserService userService;
@RequestMapping("/login.do")
public ModelAndView login(User user, HttpSession session){
boolean flag = userService.login(user.getUsername(), user.getPassword());
ModelAndView modelAndView = new ModelAndView();
if (flag){
session.setAttribute("user",user);
modelAndView.setViewName("main");
}else {
modelAndView.setViewName("../failer");
}
return modelAndView;
}
@RequestMapping("/findAll.do")
public ModelAndView findAll(@RequestParam(defaultValue = "1") int currentPage){
PageInfo<User> pageInfo= userService.findAll(currentPage);
ModelAndView modelAndView = new ModelAndView();
modelAndView.addObject("pageInfo",pageInfo);
modelAndView.setViewName("user-list");
return modelAndView;
}
@RequestMapping("/deleteById.do")
public String delete(int id){
userService.deleteById(id);
return "redirect:findAll.do";
}
@RequestMapping("/add.do")
public String add(User user){
userService.add(user);
return "redirect:findAll.do";
}
@RequestMapping("/toUpdate.do")
public ModelAndView toUpdate(int id){
User user = userService.selectUserById(id);
ModelAndView modelAndView = new ModelAndView();
modelAndView.setViewName("user-update");
modelAndView.addObject("user",user);
return modelAndView;
}
@RequestMapping("/update.do")
public String update(User user){
userService.update(user);
return "redirect:findAll.do";
}
}
package com.zhongruan.dao;
import com.zhongruan.bean.User;
import java.util.List;
public interface UserDao {
User findUserByUserName(String username);
List<User> findAll(int start);
void deleteById(int id);
void add(User user);
User selectUserId(int id);
void update(User user);
int getTotalCount();
}
package com.zhongruan.filter;
import com.zhongruan.bean.User;
import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
public class LoginFilter implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
HttpServletRequest request=(HttpServletRequest) servletRequest;
HttpServletResponse response=(HttpServletResponse)servletResponse;
HttpSession session=request.getSession();
User user=(User)session.getAttribute("user");
String uri=request.getRequestURI();
if (user==null&&uri.indexOf("login.do")==-1){
response.sendRedirect(request.getContextPath()+"../login.jsp");
}else{
filterChain.doFilter(request,response);
}
}
@Override
public void destroy() {
}
}
package com.zhongruan.service.impl;
import com.zhongruan.bean.PageInfo;
import com.zhongruan.bean.User;
import com.zhongruan.dao.UserDao;
import com.zhongruan.service.IUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class UserService implements IUserService {
@Autowired
private UserDao userDao;
@Override
public boolean login(String username, String password) {
User user = userDao.findUserByUserName(username);
if (user!= null && user.getPassword().equals(password)){
return true;
}else{
return false;
}
}
@Override
public PageInfo<User> findAll(int currentPage) {
PageInfo<User> pageInfo = new PageInfo<>();
pageInfo.setSize(5);
int tc=userDao.getTotalCount();
pageInfo.setTotalCount(tc);
int tp=(int)Math.ceil(tc/5.0);
pageInfo.setTotalPage(tp);
if(currentPage<1){
pageInfo.setCurrentPage(1);
}else if (currentPage>tp){
pageInfo.setCurrentPage(tp);
}else {
pageInfo.setCurrentPage(currentPage);
}
int start=(pageInfo.getCurrentPage()-1)*5;
List<User> userList = userDao.findAll(start);
pageInfo.setList(userList);
return pageInfo;
}
@Override
public void deleteById(int id) {
userDao.deleteById(id);
}
@Override
public void add(User user) {
userDao.add(user);
}
@Override
public User selectUserById(int id) {
return userDao.selectUserId(id);
}
@Override
public void update(User user) {
userDao.update(user);
}
}
package com.zhongruan.service;
import com.zhongruan.bean.PageInfo;
import com.zhongruan.bean.User;
import java.util.List;
public interface IUserService {
boolean login(String username, String password);
PageInfo<User> findAll(int currentPage);
void deleteById(int id);
void add(User user);
User selectUserById(int id);
void update(User user);
}
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.zhongruan.dao.UserDao" >
<select id="findUserByUserName" parameterType="string" resultType="com.zhongruan.bean.User">
select * from tb_user where username=#{username}
</select>
<select id="findAll" resultType="com.zhongruan.bean.User" parameterType="int">
select * from tb_user limit #{start},5
</select>
<delete id="deleteById" parameterType="int">
delete from tb_user where id = #{id}
</delete>
<insert id="add" parameterType="user">
insert into tb_user(username,password) values(#{username},#{password})
</insert>
<select id="selectUserId" parameterType="int" resultType="com.zhongruan.bean.User">
select * from tb_user where id=#{id}
</select>
<update id="update" parameterType="user">
update tb_user set username=#{username}, password=#{password} where id=#{id}
</update>
<select id="getTotalCount" resultType="int">
select count(*) from tb_user
</select>
</mapper>
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1">
<!-- 配置加载类路径的配置文件 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:applicationContext.xml</param-value>
</context-param>
<!-- 配置监听器 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<listener>
<listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
</listener>
<!-- 解决中文乱码过滤器 -->
<filter>
<filter-name>characterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>characterEncodingFilter</filter-name>
<url-pattern>
Processed:
0.010, SQL:
9
