Spring-mybtis整合过程详解_spirng-maybtis-优快云博客

本文介绍了如何在Spring Boot项目中整合MyBatis，包括方式1到4的详细步骤，以及每种方式的区别和最终解决方案。通过代码实例展示，助你快速上手并理解哪种整合方式最适合你的项目。

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一、创建完整包下载地址：01MyBatis基础代码.zip-Web开发文档类资源-优快云下载

二、开始整合

1、方式1

step1：导入相关坐标

<dependencies>
<dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.27</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.7</version>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.3.13</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.3.13</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.6</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.2.8</version>
        </dependency>
    </dependencies>

step2:修改daoImpl中代码

修改serviceImpl中代码

step3:创建bean.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">
    <context:property-placeholder location="db.properties"/>
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
    <property name="driverClassName" value="${jdbc.driver}"/>
    <property name="url" value="${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="configLocation" value="classpath:mybatis-config.xml"/>
</bean>
    <bean id="categoryDao" class="com.woniuxy.dao.impl.CategoryDaoImpl">
        <property name="sqlsessionFactory" ref="sqlSessionFactory"/>
    </bean>
    <bean id="categoryService" class="com.woniuxy.service.impl.CategoryServiceImpl">
         <property name="categoryDao" ref="categoryDao"/>
    </bean>

</beans>

step4:编写测试代码

import com.woniuxy.model.Category;
import com.woniuxy.service.CategoryService;
import com.woniuxy.service.impl.CategoryServiceImpl;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.util.List;

public class TestCategoryService {
    private static CategoryService categoryService = new CategoryServiceImpl();

    public static void main(String[] args) {
        testFindAllCategories();
    }

    private static void testFindAllCategories() {
        ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:bean.xml");
        CategoryService categoryService = (CategoryServiceImpl)ac.getBean("categoryService");
        List<Category> categories = categoryService.findAllCategories();
        for(Category category : categories){
            System.out.println(category.getName());
        }
    }
}

step5:测试结果