SSM框架整合实现用户注册+登录+退出登录功能

SSM框架整合实现用户注册+登录+退出登录功能

整合MyBatis、Spring、SpringMVC框架集成SSM，整个过程给出配置文件内容以及源代码，具体可看注释

创建数据库

create table user(
	uid int primary key auto_increment,
	name varchar(15) not null unique,
	password varchar(15) not null,
	regtime datetime not null
) charset utf8;

一、引入maven

<dependencies>
        <!-- 基础依赖 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.32</version>
        </dependency>

        <!-- c3p0数据源 -->
        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.5.2</version>
        </dependency>

        <!-- mybatis -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.0</version>
        </dependency>

        <!-- spring -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>5.1.5.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.1.5.RELEASE</version>
        </dependency>

        <!-- springMVC -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.1.5.RELEASE</version>
        </dependency>

        <!-- servlet api -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
        </dependency>

        <!-- mybatis-spring -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.0</version>
        </dependency>

        <!-- jstl -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
    </dependencies>

二、配置web.xml文件

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">
    <!-- 配置分发器 -->
    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

</web-app>

三、配置web.xml对应的spring配置文件spring文件名称为servletName + “-servlet.xml”

dispatcher-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
                           http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
                           http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
                           ">
        <!-- spring -->
        <!-- 配置扫描 -->
        <context:component-scan base-package="top.it1002.SSM.controller,top.it1002.SSM.service,top.it1002.SSM.dao"/>

        <!-- springMVC -->
        <!-- 注解驱动 -->
        <mvc:annotation-driven />

        <!-- 视图解析器 -->
        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
            <property name="prefix" value="/" />
            <property name="suffix" value=".jsp" />
        </bean>

        <!-- mybatis -->
        <!-- c3p0数据源 -->
        <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
            <property name="driverClass" value="com.mysql.jdbc.Driver" />
            <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/test" />
            <property name="user" value="root" />
            <property name="password" value="root" />
            <property name="maxPoolSize" value="10" />
            <property name="minPoolSize" value="2" />
            <property name="initialPoolSize" value="3" />
        </bean>

        <bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
            <property name="dataSource" ref="dataSource" />
            <property name="configLocation" value="classpath:mybatis-conf.xml" />
        </bean>
</beans>

四、创建编辑mybatis配置文件

mybatis-conf.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <typeAliases>
        <typeAlias type="top.it1002.SSM.domain.User" alias="_user"/>
    </typeAliases>
    <mappers>
        <mapper resource="UserMapper.xml"/>
    </mappers>
</configuration>

五、编写用户bean对应的数据操作mapper

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="user">
    <!-- 查 -->
    <select id="select" parameterType="int" resultType="_user">
      select * from user where uid = #{uid}
    </select>

    <select id="selectAll" resultType="_user">
        select * from user
    </select>

    <select id="loginSelect" parameterType="_user" resultType="_user">
        select * from user where name = #{name} and password = #{password}
    </select>

    <!-- 改 -->
    <update id="update" parameterType="_user">
        update user
        <set>
            <if test="password != null">password = #{password},</if>
            <if test="name != null">name = #{name}</if>
            <if test="regtime != null">regtime = #{regtime}</if>
        </set>
        where uid = #{uid}
    </update>

    <!-- 增 -->
    <insert id="insert">
        insert user(name, password, regtime) values(#{name}, #{password}, #{regtime})
    </insert>

    <!-- 删 -->
    <delete id="delete" parameterType="int">
        delete from user where uid = #{uid}
    </delete>

    <delete id="deleteAll">
        delete from user;
    </delete>

</mapper>

六、创建相关包，以下为项目结构

七、编写相关代码

1、User.java

package top.it1002.SSM.domain;

import org.springframework.stereotype.Repository;

@Repository
public class User {
    private int uid;
    private String name;
    private String password;
    private String regtime;

    public int getUid() {
        return uid;
    }

    public void setUid(int uid) {
        this.uid = uid;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getRegtime() {
        return regtime;
    }

    public void setRegtime(String regtime) {
        this.regtime = regtime;
    }
}

2、BaseDao.java

package top.it1002.SSM.dao;

import java.util.List;

public interface BaseDao<T> {
    public int insert(T t);

    public void deleteOne(int id);

    public void update(T t);

    public T selectOne(int id);

    public List<T> selectAll();
}

3、UserDao.java

package top.it1002.SSM.dao;

import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.support.SqlSessionDaoSupport;
import org.springframework.stereotype.Repository;
import top.it1002.SSM.domain.User;

import javax.annotation.Resource;
import java.util.List;

@Repository
public class UserDao extends SqlSessionDaoSupport implements BaseDao<User>{

    @Resource(name = "sqlSessionFactoryBean")
    public void setSqlSessionFactory(SqlSessionFactory sqlSessionFactory) {
        super.setSqlSessionFactory(sqlSessionFactory);
    }

    public int insert(User user) {
        return getSqlSession().insert("user.insert", user);
    }

    public void deleteOne(int uid) {
        getSqlSession().delete("user.delete", uid);
    }

    public void update(User user) {
        getSqlSession().update("user.update", user);
    }

    public User selectOne(int id) {
        return getSqlSession().selectOne("user.select", id);
    }

    public List<User> selectAll() {
        return getSqlSession().selectList("user.selectAll");
    }

    public User loginSelect(User user){
        return getSqlSession().selectOne("user.loginSelect", user);
    }
}

4、BaseService.java

package top.it1002.SSM.service;

import java.util.List;

public interface BaseService<T> {
    public int insert(T t);

    public void delete(int id);

    public void update(T t);

    public T select(int id);

    public List<T> selectAll();

}

5、UserService.java

package top.it1002.SSM.service;

import top.it1002.SSM.domain.User;

public interface UserService extends BaseService<User>{
    public User loginCheck(User user);
}

6、UserServiceImpl.java

package top.it1002.SSM.service.impl;

import org.springframework.stereotype.Service;
import top.it1002.SSM.dao.UserDao;
import top.it1002.SSM.domain.User;
import top.it1002.SSM.service.UserService;

import javax.annotation.Resource;
import java.util.List;

@Service
public class UserServiceImpl implements UserService {

    @Resource(name = "userDao")
    private UserDao userDao;

    public int insert(User user) {
        return userDao.insert(user);
    }

    public void delete(int id) {
        userDao.deleteOne(id);
    }

    public void update(User user) {
        userDao.update(user);
    }

    public User select(int id) {
        return userDao.selectOne(id);
    }

    public List<User> selectAll() {
        return userDao.selectAll();
    }

    public User loginCheck(User user) {
        return userDao.loginSelect(user);
    }
}

7、IndexController.java

package top.it1002.SSM.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import top.it1002.SSM.domain.User;
import top.it1002.SSM.service.impl.UserServiceImpl;
import top.it1002.SSM.util.SSMUtil;

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

@Controller
public class IndexController {
    /**
     * 主页展示
     * @return
     */
    @RequestMapping("/index")
    public String index(){
        return "redirect:/index.jsp";
    }

    /**
     * 前往注册界面
     * @return
     */
    @RequestMapping("/toReg")
    public String toReg(){
        return "redirect:/reg.jsp";
    }

    /**
     * 登录功能
     * @param user
     * @param sess
     * @return
     */
    @RequestMapping("/doLogin")
    public String doLogin(User user, HttpSession sess){
        String name = user.getName();
        String password = user.getPassword();
        if(!name.equals("") && !password.equals("")){
            UserServiceImpl userService = (UserServiceImpl)SSMUtil.getAC().getBean("userServiceImpl");
            User user1 = userService.loginCheck(user);
            if(user1 != null){
                sess.setAttribute("user", user1);
                return "redirect:/admin.jsp";
            }else{
                sess.setAttribute("warn", "账号或者密码错误！");
                return "redirect:/index.jsp";
            }
        }
        sess.setAttribute("warn", "账号或者密码为空！请输入完整！");
        return "redirect:/index";
    }

    /**
     * 注册功能
     * @param user
     * @param sess
     * @return
     */
    @RequestMapping("/doReg")
    public String doReg(User user, HttpSession sess){
        user.setRegtime(new Date().toLocaleString());
        UserServiceImpl userService = (UserServiceImpl)SSMUtil.getAC().getBean("userServiceImpl");
        try{
            userService.insert(user);
            sess.setAttribute("user", user);
            return "redirect:/admin.jsp";
        }catch (Exception e){
            sess.setAttribute("warn", "账号" + user.getName() + "已存在！请选择其他用户名！");
            return "redirect:/reg.jsp";
        }
    }

    /**
     * 退出登录
     * @param sess
     * @return
     */
    @RequestMapping("/doLogout")
    public String doLogout(HttpSession sess){
        try {
            sess.removeAttribute("user");
        }catch (Exception e){
        }
        try {
            sess.removeAttribute("warn");

        }catch (Exception e){
        }
        return "redirect:/index.jsp";
    }
}

8、index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<html>
  <head>
    <meta content="text/html" charset="utf-8">
    <title>登录测试</title>
  </head>
  <body>
    <table style="margin:20% auto;border:1px solid red;">
      <c:if test="${sessionScope.warn != null}">
        <h2 color="red" align="center"><c:out value="${sessionScope.warn}" /></h2>
      </c:if>
      <form action='' method="post">
        <tr>
          <td>用户名</td>
          <td><input type="text" name="name"></td>
        </tr>

        <tr>
          <td>密码</td>
          <td><input type="password" name="password"></td>
        </tr>

        <tr>
          <td><input type="submit" value="登录"></td>
          <td><a style="text-decoration:none;border:1px solid red;background-color: aqua;color:red;" href=''>前往注册</a></td>
        </tr>
      </form>
    </table>
  </body>
</html>

9、reg.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<html>
  <head>
    <meta content="text/html" charset="utf-8">
    <title>注册测试</title>
  </head>
  <body>
    <table style="margin:20% auto;border:1px solid red;">
      <form action='' method="post">
        <tr>
          <td>用户名</td>
          <td><input type="text" name="name"></td>
        </tr>

        <tr>
          <td>密码</td>
          <td><input type="password" name="password"></td>
        </tr>

        <tr>
          <td><input type="submit" value="注册"></td>
          <td><a style="text-decoration:none;border:1px solid red;background-color: aqua;color:red;" href=''>前往登录</a></td>
        </tr>
      </form>
    </table>
  </body>
</html>

10、admin.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<html>
  <head>
    <meta content="text/html" charset="utf-8">
    <title>成功登录后台系统</title>
    <style>
        td{
            border: 1px solid red;
        }
    </style>
  </head>
  <body>
    <c:if test="${sessionScope.user != null}">
      <table style="margin:20% auto;border:1px solid red;">
          <caption>欢迎用户<c:out value="${sessionScope.user.name}" /></caption>
          <tr>
            <td>用户名</td>
            <td><c:out value="${sessionScope.user.name}" /></td>
          </tr>

          <tr>
            <td>密码</td>
            <td><c:out value="${sessionScope.user.password}" /></td>
          </tr>

          <tr border="1px">
            <td>注册时间</td>
            <td><c:out value="${sessionScope.user.regtime}" /></td>
          </tr>
          <tr>
              <td><a href=''>退出登录</a></td>
          </tr>
      </table>
    </c:if>
    <c:if test="${sessionScope.user == null}">
      <h1 align="center" color="red">你尚未登录，点击<a href=''>此处</a>进行登录!</h1>
    </c:if>
  </body>
</html>

11、SSMUtil.java

package top.it1002.SSM.util;


import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class SSMUtil {
    public static ApplicationContext getAC(){
        return new ClassPathXmlApplicationContext("dispatcher-servlet.xml");
    }
}

后续会持续更新大数据相关组件方面的demo，欢迎关注

以上为SSM整合demo，如有问题欢迎探讨