springmvc+mybatis登录功能

我就是我 2022-08-02 05:55 31阅读 0赞

1.数据库设计

create database userDB  default charset=utf8;
    use userDB;
    create table user (
        id int(20) primary key auto_increment,
        username varchar(20) not null,
        password varchar(20) not null)
        engine=InnoDB default charset=utf8;
    insert into user values(1,"xiao","123456");
    commit;

2.引入jar包

![Center][]  
3.web.xml

<?xml version="1.0" encoding="UTF-8"?>
    <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
    	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
    	http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
    	
    	<servlet>
    		<servlet-name>spring</servlet-name>
    		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    		<init-param>
    			<param-name>contextConfigLocation</param-name>
    			<param-value>classpath:spring*.xml</param-value>
    		</init-param>
    		<load-on-startup>1</load-on-startup>
    	</servlet>
    
    	<servlet-mapping>
    		<servlet-name>spring</servlet-name>
    		<url-pattern>/</url-pattern>
    	</servlet-mapping>
    
    
    	<filter>
    		<filter-name>Character Encoding</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>Character Encoding</filter-name>
    		<url-pattern>/*</url-pattern>
    	</filter-mapping>
    
    	<welcome-file-list>
    		<welcome-file>login.jsp</welcome-file>
    	</welcome-file-list>
    </web-app>

4.spring.xml

5.spring-mybatis.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:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="
    http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
    http://www.springframework.org/schema/tx 
    http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
    http://www.springframework.org/schema/aop 
    http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
    ">
    
    	
    
    	
    	<bean name="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
    		<property name="url" value="${jdbc_url}" />
    		<property name="username" value="${jdbc_username}" />
    		<property name="password" value="${jdbc_password}" />
    	</bean>
    
    	
    	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    		<property name="dataSource" ref="dataSource" />
    		
    		<property name="mapperLocations" value="classpath:dao/mapping/*.xml" />
    	</bean>
    
    	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    		<property name="basePackage" value="dao" />
    		<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
    	</bean>
    
    	
    	<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    		<property name="dataSource" ref="dataSource" />
    	</bean>
    
    
    	
    	<tx:advice id="transactionAdvice" transaction-manager="transactionManager">
    		<tx:attributes>
    			<tx:method name="login" propagation="SUPPORTS" />
    		</tx:attributes>
    	</tx:advice>
    	<aop:config>
    		<aop:pointcut id="transactionPointcut" expression="execution(* service.impl.*.*(..))" />
    		<aop:advisor pointcut-ref="transactionPointcut" advice-ref="transactionAdvice" />
    	</aop:config>
    
    
    	
    	<bean id="druid-stat-interceptor" class="com.alibaba.druid.support.spring.stat.DruidStatInterceptor">
    	</bean>
    	<bean id="druid-stat-pointcut" class="org.springframework.aop.support.JdkRegexpMethodPointcut" scope="prototype">
    		<property name="patterns">
    			<list>
    				<value>service.*</value>
    			</list>
    		</property>
    	</bean>
    	<aop:config>
    		<aop:advisor advice-ref="druid-stat-interceptor" pointcut-ref="druid-stat-pointcut" />
    	</aop:config>
    
    </beans>

6.spring-mvc.xml

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context-3.0.xsd 
    http://www.springframework.org/schema/mvc 
    http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
    
    	
    	<context:component-scan base-package="controller" />
    
    	
    	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:prefix="/" p:suffix=".jsp" />
    
    	<mvc:annotation-driven/>
    	<mvc:default-servlet-handler/>
    
    </beans>

7.database.properties

jdbc_url=jdbc:mysql://localhost:3306/userDB?useUnicode=true&characterEncoding=UTF-8
    jdbc_username=root
    jdbc_password=

8.实体类

package entity;
    
    public class User {
    	
    	private Integer id;
    	private String username;
    	private String password;
    	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;
    	}
    	public Integer getId() {
    		return id;
    	}
    	public void setId(Integer id) {
    		this.id = id;
    	}
    	
    
    }

9.数据访问层接口

package dao;
    
    import entity.User;
    
    public interface IUserDao {
    	
    	public User selectUser(User user);
    	
    
    }

10.数据访问层mapper(包名：dao.mapping)

<?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="dao.IUserDao">
    
    	<select id="selectUser" resultType="entity.User" parameterType="entity.User">
    		select
    		id,username,password
    		from user
    		where username=#{username}  and password=#{password}
    	</select>
    	
    
    </mapper>

11.业务层接口

package service;
    
    import entity.User;
    
    public interface IUserService {
    	
    	public boolean login(User user);
    
    }

12.业务层实现类

package service.impl;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;
    
    import service.IUserService;
    import dao.IUserDao;
    import entity.User;
    
    @Service
    public class UserServiceImpl implements IUserService{
    
    	@Autowired
    	private IUserDao  userDao;
    
    	@Override
    	public boolean login(User user) {
    		return userDao.selectUser(user)==null?false:true;
    	}
    
    }

13.控制器

package controller;
    
    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.ResponseBody;
    
    import service.IUserService;
    import entity.User;
    
    @Controller
    @RequestMapping("/user")
    public class UserController {
    	
    	@Autowired
    	private IUserService userService;
    	
    	@ResponseBody
    	@RequestMapping(value="/ret")
        public String login(User user){
        	return String.valueOf(userService.login(user));
        }
    }

14.登录界面（主意引入jquery.js）

<%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>登录</title>
    <script type="text/javascript" src="js/jquery.js"></script>
    <script type="text/javascript">
    function doLogin(){
    	$.post("user/ret",$("#loginForm").serialize(),function(data){
    		
    		if(data=="true"){
    		  alert("登录成功!");
    		  location="success.jsp";
    		}else{
    		  alert("登录失败!");
    		}
    	});
    }
    </script>
    </head>
    <body>
    <form action="" method="post" id="loginForm">
    <table>
    <tbody>
    <tr>
    <th>用户名：</th><td><input name="username"  /></td>
    </tr>
    <tr>
    <th>密码：</th><td><input name="password"  type="password"/></td>
    </tr>
    <tr>
    <td colspan="2"><input type="button" value="登录" οnclick="doLogin()"/><input type="reset" value="重置"/></td>
    </tr>
    </tbody>
    </table>
    </form>
    </body>
    </html>

15.成功页面

[Center]: /images/20220731/dd2e12f3c5094e0e8c1475bf9448f7a2.png