Spring整合Mybatis实现对数据库的增删改查

以你之姓@ 2022-02-26 19:44 216阅读 0赞

**1.实现架构关系：三层架构**  
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**2.项目类型为Maven，首先在pom.xml项目部署描述文件里配置相关的依赖包：**

<dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
        </dependency>
    
        
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
    
        
        <dependency>
            <groupId>commons-dbcp</groupId>
            <artifactId>commons-dbcp</artifactId>
            <version>1.4</version>
        </dependency>
    
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>4.3.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>4.3.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>4.3.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>4.3.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>4.3.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>4.3.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>4.3.2.RELEASE</version>
        </dependency>
    
        <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.1.1</version>
        </dependency>
    
        
        <dependency>
            <groupId>commons-pool</groupId>
            <artifactId>commons-pool</artifactId>
            <version>1.6</version>
        </dependency>
    
        
        <dependency>
            <groupId>com.oracle</groupId>
            <artifactId>ojdbc14</artifactId>
            <version>10.2.0.3.0</version>
        </dependency>
        
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>3.1.12</version>
        </dependency>
        
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.1</version>
        </dependency>
    </dependencies>

**3.创建spring配置文件：applicationContext.xml**

<bean id="config" class="org.springframework.beans.factory.config.PreferencesPlaceholderConfigurer">
        <property name="locations">
            <value>
                classpath:db.properties
            </value>
        </property>
    </bean>
    
    
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
      <property name="driverClassName" value="${driver}"></property>
        <property name="url" value="${url}"></property>
        <property name="username" value="${user}"></property>
        <property name="password" value="${pass}"></property>
        <property name="maxActive" value="${maxActive}"></property>
        <property name="maxIdle" value="${maxIdle}"></property>
    </bean>
    
    
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <property name="configLocation" value="classpath:mybatis-config.xml"></property>
    </bean>
    
    
    
    <bean id="studentMapper" class="com.zb.mapper.impl.StudentMapperImpl">
        <property name="sqlSessionFactory" ref="sqlSessionFactory"></property>
    </bean>
    
    
    <bean id="studentService" class="com.zb.service.impl.StudentServiceImpl">
        <property name="studentMapper" ref="studentMapper"></property>
    </bean>

**4.创建连接数据库需要的参数配置文件：db.properties**

分别是连接数据库驱动的全类名、连接数据库的地址、数据库用户名称和密码、以及最大连接数和最大闲置数。
    driver=com.mysql.jdbc.Driver 
    url=jdbc:mysql://localhost:3306/springmybatis
    user=root
    pass=xxxxxx
    maxIdle=1000
    maxActive=500

**5.创建mybatis全局配置文件：mybatis-config.xml**  
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**6.创建model层实体类的mybatis映射文件：studentMapper.xml**  
**里面是具体对数据库操作**  
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**7.创建Mapper数据层(mybatis为mapper层，其它为dao层)，并创建相应的对数据库增删改查的方法**  
**和相应的实现类，里面是对Mapper层方法的具体实现。**  
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**8.创建service业务层，并创建service层的实现类以及实现方法**  
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**9.使用单元测试在测试类中进行增删改查的测试**  
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