SpringBoot集成mybatis实例

一、使用mybatis-spring-boot-starter

1、添加依赖

<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.0.0</version>
</dependency>

2、启动时导入指定的sql(

application.properties

spring.datasource.schema=import.sql

3、annotation形式

@SpringBootApplication
@MapperScan("sample.mybatis.mapper")
public class SampleMybatisApplication implements CommandLineRunner {
@Autowired
private CityMapper cityMapper;
public static void main(String[] args) {
SpringApplication.run(SampleMybatisApplication.class, args);
}
@Override
public void run(String... args) throws Exception {
System.out.println(this.cityMapper.findByState("CA"));
}
}

4、xml方式

mybatis-config.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<typeAliases>
<package name="sample.mybatis.domain"/>
</typeAliases>
<mappers>
<mapper resource="sample/mybatis/mapper/CityMapper.xml"/>
</mappers>
</configuration>

application.properties

spring.datasource.schema=import.sql
mybatis.config=mybatis-config.xml

mapper

@Component
public class CityMapper {
@Autowired
private SqlSessionTemplate sqlSessionTemplate;
public City selectCityById(long id) {
return this.sqlSessionTemplate.selectOne("selectCityById", id);
}
}

二、手工集成

1、annotation方式

@Configuration
@MapperScan("com.xixicat.modules.dao")
@PropertySources({ @PropertySource(value = "classpath:application.properties", ignoreResourceNotFound = true), @PropertySource(value = "file:./application.properties", ignoreResourceNotFound = true) })
public class MybatisConfig {
@Value("${name:}")
private String name;
@Value("${database.driverClassName}")
private String driverClass;
@Value("${database.url}")
private String jdbcUrl;
@Value("${database.username}")
private String dbUser;
@Value("${database.password}")
private String dbPwd;
@Value("${pool.minPoolSize}")
private int minPoolSize;
@Value("${pool.maxPoolSize}")
private int maxPoolSize;
@Bean
public Filter characterEncodingFilter() {
CharacterEncodingFilter characterEncodingFilter = new CharacterEncodingFilter();
characterEncodingFilter.setEncoding("UTF-8");
characterEncodingFilter.setForceEncoding(true);
return characterEncodingFilter;
}
@Bean(destroyMethod = "close")
public DataSource dataSource(){
HikariConfig hikariConfig = new HikariConfig();
hikariConfig.setDriverClassName(driverClass);
hikariConfig.setJdbcUrl(jdbcUrl);
hikariConfig.setUsername(dbUser);
hikariConfig.setPassword(dbPwd);
hikariConfig.setPoolName("springHikariCP");
hikariConfig.setAutoCommit(false);
hikariConfig.addDataSourceProperty("cachePrepStmts", "true");
hikariConfig.addDataSourceProperty("prepStmtCacheSize", "250");
hikariConfig.addDataSourceProperty("prepStmtCacheSqlLimit", "2048");
hikariConfig.addDataSourceProperty("useServerPrepStmts", "true");
hikariConfig.setMinimumIdle(minPoolSize);
hikariConfig.setMaximumPoolSize(maxPoolSize);
hikariConfig.setConnectionInitSql("SELECT 1");
HikariDataSource dataSource = new HikariDataSource(hikariConfig);
return dataSource;
}
@Bean
public PlatformTransactionManager transactionManager() {
return new DataSourceTransactionManager(dataSource());
}
@Bean
public SqlSessionFactory sqlSessionFactory() throws Exception {
SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
sessionFactory.setDataSource(dataSource());
sessionFactory.setFailFast(true);
sessionFactory.setConfigLocation(new ClassPathResource("mybatis-config.xml"));
return sessionFactory.getObject();
}
}

点评

这种方式有点别扭，而且配置不了拦截式事务拦截，只能采用注解声明，有些冗余

2、xml方式

数据源

<?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:p="http://www.springframework.org/schema/p"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">
<context:property-placeholder ignore-unresolvable="true" />
<bean id="hikariConfig" class="com.zaxxer.hikari.HikariConfig">
<property name="poolName" value="springHikariCP" />
<property name="connectionTestQuery" value="SELECT 1" />
<property name="dataSourceClassName" value="${database.dataSourceClassName}" />
<property name="maximumPoolSize" value="${pool.maxPoolSize}" />
<property name="idleTimeout" value="${pool.idleTimeout}" />
<property name="dataSourceProperties">
<props>
<prop key="url">${database.url}</prop>
<prop key="user">${database.username}</prop>
<prop key="password">${database.password}</prop>
</props>
</property>
</bean>
<!-- HikariCP configuration -->
<bean id="dataSource" class="com.zaxxer.hikari.HikariDataSource" destroy-method="close">
<constructor-arg ref="hikariConfig" />
</bean>
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<!-- 配置mybatis配置文件的位置 -->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
<property name="typeAliasesPackage" value="com.xixicat.domain"/>
<!-- 配置扫描Mapper XML的位置 -->
<property name="mapperLocations" value="classpath:com/xixicat/modules/dao/*.xml"/>
</bean>
<!-- 配置扫描Mapper接口的包路径 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<property name="basePackage" value="com.xixicat.repository.mapper"/>
</bean>
<bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
<constructor-arg ref="sqlSessionFactory"/>
</bean>
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager"
p:dataSource-ref="dataSource"/>
<aop:aspectj-autoproxy expose-proxy="true" proxy-target-class="true" />
<tx:advice id="txAdvice" transaction-manager="transactionManager" >
<tx:attributes>
<tx:method name="start*" propagation="REQUIRED"/>
<tx:method name="submit*" propagation="REQUIRED"/>
<tx:method name="clear*" propagation="REQUIRED"/>
<tx:method name="create*" propagation="REQUIRED"/>
<tx:method name="activate*" propagation="REQUIRED"/>
<tx:method name="save*" propagation="REQUIRED"/>
<tx:method name="insert*" propagation="REQUIRED"/>
<tx:method name="add*" propagation="REQUIRED"/>
<tx:method name="update*" propagation="REQUIRED"/>
<tx:method name="delete*" propagation="REQUIRED"/>
<tx:method name="remove*" propagation="REQUIRED"/>
<tx:method name="execute*" propagation="REQUIRED"/>
<tx:method name="del*" propagation="REQUIRED"/>
<tx:method name="*" read-only="true"/>
</tx:attributes>
</tx:advice>
<aop:config proxy-target-class="true" expose-proxy="true">
<aop:pointcut id="pt" expression="execution(public * com.xixicat.service.*.*(..))" />
<aop:advisor order="200" pointcut-ref="pt" advice-ref="txAdvice"/>
</aop:config>
</beans>

aop依赖

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
</dependency>

mybatis-spring等依赖

<!-- boot dependency mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.3.0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.2</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
<!--<dependency>-->
<!--<groupId>org.hsqldb</groupId>-->
<!--<artifactId>hsqldb</artifactId>-->
<!--<scope>runtime</scope>-->
<!--</dependency>-->
<dependency>
<groupId>com.zaxxer</groupId>
<artifactId>HikariCP-java6</artifactId>
<version>2.3.8</version>
</dependency>

指定xml配置文件

@Configuration
@ComponentScan( basePackages = {"com.xixicat"} )
@ImportResource("classpath:applicationContext-mybatis.xml")
@EnableAutoConfiguration
public class AppMain {
// 用于处理编码问题
@Bean
public Filter characterEncodingFilter() {
CharacterEncodingFilter characterEncodingFilter = new CharacterEncodingFilter();
characterEncodingFilter.setEncoding("UTF-8");
characterEncodingFilter.setForceEncoding(true);
return characterEncodingFilter;
}
//文件下载
@Bean
public HttpMessageConverters restFileDownloadSupport() {
ByteArrayHttpMessageConverter arrayHttpMessageConverter = new ByteArrayHttpMessageConverter();
return new HttpMessageConverters(arrayHttpMessageConverter);
}
public static void main(String[] args) throws Exception {
SpringApplication.run(AppMain.class, args);
}
}

点评

跟传统的方式集成最为直接，而且事务配置也比较容易上手

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。

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