ssm增删改查

ssm增删改查
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LoginController

package com.web.controller;

import com.web.pojo.User;
import com.web.service.UserService;
import org.apache.ibatis.session.SqlSession;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpSession;
import java.util.List;

@Controller
public class LoginController {

    @Autowired
    private UserService userService;


    /**登录
     * @param model
     * @param uPwd
     * @param uName
     * @param session
     * @return {@link String}
     */
    @RequestMapping("/toLogin")
    public String toLogin(Model model, String uPwd, String uName, HttpSession session){
        User user1 = userService.login(uPwd, uName);
        if (user1!=null){

            List<User> list = userService.findAll();
            //增删改查需要的参数
            session.setAttribute("user1",user1);
            //列表参数
            model.addAttribute("list",list);
            //登录成功跳转到首页
            return "index";
        }else {
            //登录失败跳转回登录页面
            return "cwlogin";
        }
    }

    /**返回列表
     * @param model
     * @return {@link String}
     */
    @RequestMapping("/flush")
    public String flush(Model model){
        List<User> list = userService.findAll();
        model.addAttribute("list",list);
        return "index";
    }


    /**删除功能
     * @param uCode
     * @return {@link String}
     */
    @RequestMapping("/toDel")
    public String toDel(int uCode){
        int id = userService.delete(uCode);
        if (id>0){
            System.out.println("删除成功");
        }
        return "redirect:flush";
    }


    /**查看详情
     * @param uCode
     * @param model
     * @return {@link String}
     */
    @RequestMapping("/toLook")
    public String toLook(int uCode,Model model){
        User user = userService.findById(uCode);
        model.addAttribute("user",user);
        return "userOne";
        }

    /**添加页面
     * @return {@link String}
     */
    @RequestMapping("/toAdd")
    public String toAdd(){
        return "addUser";
    }

    /**实现添加功能
     * @param user
     * @return {@link String}
     */
    @RequestMapping("/doAdd")
    public String doAdd(User user){
        int i = userService.add(user);
        if (i>0){
            System.out.println("添加成功");
        }
        return "redirect:flush";
    }

    /**修改页面
     * @param uCode
     * @param model
     * @return {@link String}
     */
    @RequestMapping("/toUpdate")
    public String toUpdate(int uCode,Model model){
        User user = userService.findById(uCode);
        model.addAttribute("user",user);
        return "update";
    }

    /**实现修改功能
     * @param user
     * @return {@link String}
     */
    @RequestMapping("/doUpdate")
    public String doUpdate(User user){
        int i = userService.updateUser(user);
        if (i>0){
            System.out.println("修改成功");
        }
        return "redirect:flush";
    }

}

LoginFilter

package com.web.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.web.pojo.User;

public class LoginFilter implements Filter{



    @Override
    public void doFilter(ServletRequest request, ServletResponse response,
                         FilterChain arg2) throws IOException, ServletException {
        // TODO Auto-generated method stub
        //通过过滤器进行登录过滤，不是进行合法用户名密码登录的，不可以跳转到下一页面，防止通过路径直接访问网页
        HttpServletRequest requ=(HttpServletRequest)request;
        HttpServletResponse res=(HttpServletResponse)response;
        User userSession=(User)requ.getSession().getAttribute("userSession");
        if(userSession==null){
            res.sendRedirect("/tset1_war_exploded/");
        }else{
            arg2.doFilter(request, response);
        }
    }

    @Override
    public void destroy() {
        // TODO Auto-generated method stub

    }

    @Override
    public void init(FilterConfig arg0) throws ServletException {
        // TODO Auto-generated method stub

    }



}

UserMapper

package com.web.mapper;

import com.web.pojo.User;
import org.apache.ibatis.annotations.Param;

import java.util.List;

public interface UserMapper {
    List<User> findAll();

    User login(@Param("uPwd") String uPwd,@Param("uName") String uName);

    User findById(int uCode);

    int delete(int uCode);

    int addUser(User user);

    int updateUser(User user);
}

UserMapper.xml

<?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.web.mapper.UserMapper">
    <select id="findAll" resultType="com.web.pojo.User">
    select * from user
    </select>

    <select id="login" resultType="com.web.pojo.User">
        select * from user where uPwd=#{uPwd} and uName=#{uName}
    </select>

    <select id="findById" resultType="com.web.pojo.User">
        select * from user where uCode=#{uCode}
    </select>

    <delete id="delete" parameterType="int">
        delete from user where uCode=#{uName}
    </delete>

    <insert id="addUser" parameterType="com.web.pojo.User">
         insert into user(uName,uPwd,uType,uMemo) values(#{uName},#{uPwd},#{uType},#{uMemo});
    </insert>

<!--    <update id="updateUser" parameterType="com.web.pojo.User">-->
<!--       update user set username=#{username},password=#{password},role=#{role},remark=#{remark} where id=#{id};-->
<!--    </update>-->

    <update id="updateUser" parameterType="com.web.pojo.User">
        update user set uName=#{uName},uPwd=#{uPwd},uType=#{uType},uMemo=#{uMemo} where uCode=#{uCode};
    </update>
</mapper>

User

package com.web.pojo;

public class User {
    private int uCode;
    private String uName;
    private String uPwd;
    private int uType;
    private String uMemo;

    public User() {
    }

    public int getuCode() {
        return uCode;
    }

    public void setuCode(int uCode) {
        this.uCode = uCode;
    }

    public String getuName() {
        return uName;
    }

    public void setuName(String uName) {
        this.uName = uName;
    }

    public String getuPwd() {
        return uPwd;
    }

    public void setuPwd(String uPwd) {
        this.uPwd = uPwd;
    }

    public int getuType() {
        return uType;
    }

    public void setuType(int uType) {
        this.uType = uType;
    }

    public String getuMemo() {
        return uMemo;
    }

    public void setuMemo(String uMemo) {
        this.uMemo = uMemo;
    }

    @Override
    public String toString() {
        return "User{" +
                "uCode=" + uCode +
                ", uName='" + uName + '\'' +
                ", uPwd='" + uPwd + '\'' +
                ", uType=" + uType +
                ", uMemo='" + uMemo + '\'' +
                '}';
    }

}

UserService

package com.web.service;

import com.web.pojo.User;

import java.util.List;

public interface UserService {

    public List<User> findAll();

    User login(String uPwd,String uName);

    User findById(int uCode);

    int delete(int uCode);

    int add(User user);

    int updateUser(User user);
}

UserImpl

package com.web.service.Impl;

import com.web.mapper.UserMapper;
import com.web.pojo.User;
import com.web.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class UserImpl implements UserService {

    @Autowired
    private UserMapper userMapper;

    @Override
    public List<User> findAll() {
        return userMapper.findAll();
    }

    @Override
    public User login(String uPwd, String uName) {
        return userMapper.login(uPwd,uName);
    }

    @Override
    public User findById(int uCode) {
        return userMapper.findById(uCode);
    }

    @Override
    public int delete(int uCode) {
        int i = userMapper.delete(uCode);
        return i;
    }

    @Override
    public int add(User user) {
        int i = userMapper.addUser(user);
        return i;
    }

    @Override
    public int updateUser(User user) {
        int i = userMapper.updateUser(user);
        return i;
    }
}

ssm增删改查

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