Spring 集成 MyBatis

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记录一次 Java 类配置集成的方式

自动的配置 DispatcherServlet 和 Spring 应用上下文

public class WebAppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {

    @Override
    protected Class<?>[] getRootConfigClasses() {
        return new Class<?>[]{RootConfig.class };
    } //其他 bean 的配置类

    @Override
    protected Class<?>[] getServletConfigClasses() {
        return new Class<?>[] {WebConfig.class};
    }//包含 Web 组件的 bean

    @Override
    protected String[] getServletMappings() {
        return new String[] {"/"};
    }//将 DispatcherServlet 映射到"/"

}

RootConfig 的内容

:配置了 mybatis 的SqlSessionBean 和 MapperScannerConfigurer ，其中前者我配置在了 XML 中，用 ImportResource导入。

@ImportResource("classpath:mybatis-config.xml")
@Configuration
public class RootConfig {



    @Bean
    public MapperScannerConfigurer mapperScanner() {
        MapperScannerConfigurer mapperScanner = 
                new MapperScannerConfigurer();

        mapperScanner.setBasePackage("cn.iunote.web.mapper");
        return mapperScanner;

    }
}

<?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-4.3.xsd">


<bean id="datasource" class="org.apache.ibatis.datasource.pooled.PooledDataSource" >
        <property name="driver" value="com.mysql.cj.jdbc.Driver" />
        <property name="url" value="jdbc:mysql://localhost:3306/mybatis?useSSL=false&amp;serverTimezone=UTC" />
        <property name="username" value="root" />
        <property name="password" value="52wmssdr" />
    </bean>

<bean class="org.mybatis.spring.SqlSessionFactoryBean">
    <property name="dataSource" ref="datasource"></property>
    <property name="mapperLocations">
        <array>
            <value>classpath:cn/iunote/web/mapper/bookMapper.xml</value>
        </array>
    </property>
</bean>


</beans>

WebConfig 的内容

@Configuration
@EnableWebMvc //等同于在 XML 中配置<mvc:annotation-driven/>启用注解驱动的 SpringMVC
@ComponentScan(basePackages= {"cn.iunote.web.controller","cn.iunote.web.DAO"})
public class WebConfig {

    @Bean
    public ViewResolver viewResolver() {
        InternalResourceViewResolver resolver =
                new InternalResourceViewResolver();
        resolver.setPrefix("/WEB-INF/jsp/");
        resolver.setSuffix(".jsp");
        return resolver;
    }
}