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Spring整合MyBatis

SSM简介及整合思路

SSM简介

(上图来自百度图片)

SSM全称Spring+SpringMVC+MyBatis,是目前比较主流的Java EE企业级框架,适用于搭建各种大型的企业级应用系统

SSM框架中:

  Spring:是一个轻量级的控制反转(IoC)和面向切面(AOP)的容器框架。

  SpringMVC:Spring MVC属于Spring Framework的后续产品,已经融合在Spring Web Flow里面,它原生支持的Spring特性,让开发变得非常简单规范。Spring MVC分离了控制器、模型对象、分派器以及处理程序对象的角色,这种分离让它们更容易进行定制。

  MyBatis:是一个基于Java的持久层框架,使用简单的XML或注解用于配置,将接口和Java的POJOs(Plain Old Java Objects,普通的Java对象)映射成数据库中的记录。

整合思路

通过上图我们可以看出,spring将各层进行整合,类似于一个大管家,将MyBatis和SpringMVC揉合在一起:

  通过spring管理持久层的mapper(相当于dao接口),使用mapper的扫描器自动扫描mapper接口在spring中进行注册;

  通常由Spring来管理service接口,使用xml配置的方式来将service接口配置到spring配置文件中;另外,事务控制一般也是在service层进行配置;

  Controller层由SpringMVC来控制,而SpringMVC是Spring的一个模块,所以不需要整合

准备测试数据

SET FOREIGN_KEY_CHECKS=0;
DROP TABLE IF EXISTS `user`;
CREATE TABLE `user` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `username` varchar(20) NOT NULL COMMENT '用户名',
  `password` varchar(255) NOT NULL COMMENT '密码',
  `real_name` varchar(255) NOT NULL COMMENT '真实名',
  `sex` varchar(255) DEFAULT NULL COMMENT '性别',
  `birthday` date DEFAULT NULL COMMENT '生日',
  `phone` varchar(255) NOT NULL COMMENT '电话',
  `utype` tinyint(1) DEFAULT NULL COMMENT '用户类型',
  `addtime` datetime DEFAULT NULL COMMENT '添加时间',
  `adduser` varchar(255) DEFAULT NULL COMMENT '添加者',
  PRIMARY KEY (`id`),
  UNIQUE KEY `phone` (`phone`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
    
insert into `user` values(1,'qzcsbj1','62f7f5673e94eca261b8fce7ae7863a4','qzcsbj1','男','2018-09-06','13800000001',0,now(),'qzcsbj');
insert into `user` values(2,'qzcsbj2','62f7f5673e94eca261b8fce7ae7863a4','qzcsbj2','女','2018-09-07','13800000002',1,now(),'qzcsbj');
insert into `user` values(3,'qzcsbj3','62f7f5673e94eca261b8fce7ae7863a4','qzcsbj3','男','2018-09-08','13800000003',0,now(),'qzcsbj');
insert into `user` values(4,'qzcsbj4','62f7f5673e94eca261b8fce7ae7863a4','qzcsbj4','女','2018-09-09','13800000004',1,now(),'qzcsbj');
insert into `user` values(5,'qzcsbj5','62f7f5673e94eca261b8fce7ae7863a4','qzcsbj5','女','2018-09-10','13800000005',0,now(),'qzcsbj');

创建实体类

创建实体类的包

连接数据库

逆向生成

实体类

package com.qzcsbj.bean;
 
import java.util.Date;
 
/**
 * @公众号 : 全栈测试笔记
 * @博客 : www.cnblogs.com/uncleyong
 * @微信 : ren168632201
 * @描述 : <>
 */
 
public class User {
  private Integer id;
  private String username;
  private String password;
  private String realName;
  private String sex;
  private Date birthday;
  private String phone;
  private String utype;
  private String addtime;
  private String adduser;
 
  public User() {
  }
 
  public User(String username, String password, String realName, String sex, Date birthday, String phone, String utype,String adduser, String addtime) {
    this.username = username;
    this.password = password;
    this.realName = realName;
    this.sex = sex;
    this.birthday = birthday;
    this.phone = phone;
    this.utype = utype;
    this.adduser = adduser;
    this.addtime = addtime;
  }
 
  public Integer getId() {
    return id;
  }
 
  public void setId(Integer 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;
  }
 
 
  public String getRealName() {
    return realName;
  }
 
  public void setRealName(String realName) {
    this.realName = realName;
  }
 
 
  public String getSex() {
    return sex;
  }
 
  public void setSex(String sex) {
    this.sex = sex;
  }
 
 
  public Date getBirthday() {
    return birthday;
  }
 
  public void setBirthday(Date birthday) {
    this.birthday = birthday;
  }
 
 
  public String getPhone() {
    return phone;
  }
 
  public void setPhone(String phone) {
    this.phone = phone;
  }
 
 
  public String getUtype() {
    return utype;
  }
 
  public void setUtype(String utype) {
    this.utype = utype;
  }
 
 
  public String getAddtime() {
    return addtime;
  }
 
  public void setAddtime(String addtime) {
    this.addtime = addtime;
  }
 
 
  public String getAdduser() {
    return adduser;
  }
 
  public void setAdduser(String adduser) {
    this.adduser = adduser;
  }
 
  @Override
  public String toString() {
    return "User{" +
            "id=" + id +
            ", username='" + username + '\'' +
            ", password='" + password + '\'' +
            ", realName='" + realName + '\'' +
            ", sex='" + sex + '\'' +
            ", birthday=" + birthday +
            ", phone='" + phone + '\'' +
            ", utype='" + utype + '\'' +
            ", addtime=" + addtime +
            ", adduser='" + adduser + '\'' +
            '}';
  }
}

pom依赖

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.qzcsbj.spring-mybatis</groupId>
    <artifactId>spring-mybatis</artifactId>
    <version>1.0-SNAPSHOT</version>

    <!--集中定义版本号-->
    <properties>
        <spring.version>4.3.14.RELEASE</spring.version>
        <mybatis.version>3.4.6</mybatis.version>
        <mybatis.spring.version>1.3.1</mybatis.spring.version>
        <mysql.version>5.1.47</mysql.version>
        <druid.version>1.1.10</druid.version>
        <junit.version>4.12</junit.version>
        <log4j.version>1.2.17</log4j.version>
    </properties>

    <dependencies>
        <!-- spring需要的jar包 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!--<dependency>-->
        <!--<groupId>org.springframework</groupId>-->
        <!--<artifactId>spring-context-support</artifactId>-->
        <!--<version>${spring.version}</version>-->
        <!--</dependency>-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-expression</artifactId>
            <version>${spring.version}</version>
        </dependency>


        <!--Spring测试模块-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <!--aop相关-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <!-- Mybatis -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>${mybatis.version}</version>
        </dependency>

        <!--Spring和MyBatis整合包-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>${mybatis.spring.version}</version>
        </dependency>

        <!--spring-jdbc-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <!-- MySql驱动 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql.version}</version>
        </dependency>

        <!--阿里的数据库连接池工具包-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>${druid.version}</version>
        </dependency>

        <!--单元测试-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>${junit.version}</version>
            <scope>test</scope>
        </dependency>

        <!--日志-->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>${log4j.version}</version>
        </dependency>
    </dependencies>

    <build>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
            </resource>
        </resources>
    </build>
</project>

添加jdbc.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://192.168.117.180:3306/gift?useUnicode=true&characterEncoding=utf-8&useSSL=true
jdbc.username=root
jdbc.password=qzcsbj

添加log4j.properties

### 根logger 设置###
log4j.rootLogger = INFO,console

log4j.appender.console = org.apache.log4j.ConsoleAppender
log4j.appender.console.Target = System.out
log4j.appender.console.layout = org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern = %d{**:mm:ss SSS} [%t] %-5p method: %l----%m%n

log4j.logger.java.sql.ResultSet=INFO
log4j.logger.org.apache=INFO
log4j.logger.java.sql.Connection=DEBUG
log4j.logger.java.sql.Statement=DEBUG
log4j.logger.java.sql.PreparedStatement=DEBUG

创建Mapper层

package com.qzcsbj.mapper;

import com.qzcsbj.bean.User;

import java.util.List;

/**
 * @公众号 : 全栈测试笔记
 * @博客 : www.cnblogs.com/uncleyong
 * @微信 : ren168632201
 * @描述 : <>
 */
public interface UserMapper {
    public List<User> getUsers();
}

创建映射文件

<?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.qzcsbj.mapper.UserMapper">
    <select id="getUsers" resultType="com.qzcsbj.bean.User">
        select * from user
    </select>
</mapper>

创建业务逻辑层

接口层

package com.qzcsbj.service;

import com.qzcsbj.bean.User;

import java.util.List;

/**
 * @公众号 : 全栈测试笔记
 * @博客 : www.cnblogs.com/uncleyong
 * @微信 : ren168632201
 * @描述 : <>
 */
public interface UserService {
    public List<User> getUsers();
} 

接口实现层

package com.qzcsbj.service.impl;

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

import java.util.List;

/**
 * @公众号 : 全栈测试笔记
 * @博客 : www.cnblogs.com/uncleyong
 * @微信 : ren168632201
 * @描述 : <>
 */
@Service
public class UserServiceImlp implements UserService {
    @Autowired
    UserMapper userMapper;

    public List<User> getUsers() {
        return userMapper.getUsers();
    }
}

创建applicationContext.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"
       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.xsd">

    <!--Spring扫描程序中的包-->
    <context:component-scan base-package="com.qzcsbj.*"/>

    <!--加载数据库属性文件-->
    <context:property-placeholder location="classpath:jdbc.properties"/>

    <!--配置数据源-->
    <bean id="ds" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="driverClassName" value="${jdbc.driver}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
        <property name="url" value="${jdbc.url}"/>
    </bean>

    <!--配置MyBatis的sqlSession工厂SqlSessionFactory(Spring框架管理了session,所以也不需要mybatis工具类了)-->
    <bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--指定数据库连接对象dataSource-->
        <property name="dataSource" ref="ds"/>
        <!--指定Mapper的映射文件位置-->
        <property name="mapperLocations" value="classpath:com/qzcsbj/mapper/*.xml"/>
        <!--指定实体类的别名-->
        <property name="typeAliasesPackage" value="com.qzcsbj.bean"/>
    </bean>

    <!--Spring框架扫描Mapper层接口,自动给Mapper层接口生成代理对象-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.qzcsbj.mapper"/>
    </bean>
</beans>

测试类

package com.qzcsbj.test;

import com.qzcsbj.bean.User;
import com.qzcsbj.service.UserService;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import java.util.List;


/**
 * @公众号 : 全栈测试笔记
 * @博客 : www.cnblogs.com/uncleyong
 * @微信 : ren168632201
 * @描述 : <>
 */
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext.xml")
public class TestSpringMyBatis {
    @Autowired
    UserService userService;

    @Test
    public void test(){
        List<User> users = userService.getUsers();
        for (User user : users) {
            System.out.println(user);
        }
    }
}

结果,成功查询到数据

 

【bak】

原文会持续更新,原文地址:https://www.cnblogs.com/uncleyong/p/17026215.html

 

posted @ 2023-01-04 22:36  全栈测试笔记  阅读(183)  评论(0编辑  收藏  举报
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