SpringBoot 集成 Mybatis實現雙數據源
Mybatis 常用ORM工具,不過多介紹,與SpringBoot集成實現單數據源可參考:
https://github.com/liaozihong/SpringBoot-Learning/tree/master/SpringBoot-Mybatis
導入jar包,使用druid連接池
compile group: 'com.alibaba', name: 'druid', version: '1.1.10'
compile group: 'mysql', name: 'mysql-connector-java', version: '5.1.46'
compile group: 'org.mybatis.spring.boot', name: 'mybatis-spring-boot-starter', version: '1.3.2'
前景
項目需要用到兩個數據庫,也就是雙數據源Spring數據庫和Test數據庫,Mybatis的配置如下:
配置示例
配置Mybatis,配置兩個DataSource數據源,並表示Bean名
@Configuration
public class MybatisConfiguration {
/**
* spring數據庫配置前綴.
*/
final static String SPRING_PREFIX = "spring.datasource.spring";
/**
* test數據庫配置前綴.
*/
final static String TEST_PREFIX = "spring.datasource.test";
/**
* The constant logger.
*/
final static Logger logger = LoggerFactory.getLogger(MybatisConfiguration.class);
/**
* 配置druid顯示監控統計信息
* 開啓Druid的監控平臺 http://localhost:8080/druid
*
* @return servlet registration bean
*/
@Bean
public ServletRegistrationBean druidServlet() {
logger.info("Init Druid Servlet Configuration ");
ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(), "/druid/*");
// IP白名單,不設默認都可以
// servletRegistrationBean.addInitParameter("allow", "192.168.2.25,127.0.0.1");
// IP黑名單(共同存在時,deny優先於allow)
servletRegistrationBean.addInitParameter("deny", "192.168.1.100");
//控制檯管理用戶
servletRegistrationBean.addInitParameter("loginUsername", "root");
servletRegistrationBean.addInitParameter("loginPassword", "dashuai");
//是否能夠重置數據 禁用HTML頁面上的“Reset All”功能
servletRegistrationBean.addInitParameter("resetEnable", "false");
return servletRegistrationBean;
}
/**
* 註冊一個filterRegistrationBean
*
* @return filter registration bean
*/
@Bean
public FilterRegistrationBean filterRegistrationBean() {
FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter());
//添加過濾規則
filterRegistrationBean.addUrlPatterns("/*");
//添加不需要忽略的格式信息
filterRegistrationBean.addInitParameter("exclusions", "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
return filterRegistrationBean;
}
/**
* Spring data source data source.
*
* @return the data source
*/
@Bean(name = "SpringDataSource")
@ConfigurationProperties(prefix = SPRING_PREFIX) // application.properties中對應屬性的前綴
public DataSource springDataSource() {
return new DruidDataSource();
}
/**
* Test data source data source.
*
* @return the data source
*/
@Bean(name = "TestDataSource")
@ConfigurationProperties(prefix = TEST_PREFIX) // application.properties中對應屬性的前綴
public DataSource testDataSource() {
return new DruidDataSource();
}
}
配置Spring數據庫的數據源
/**
* 注意basePackages 指定掃描Mapper的包路徑,sqlSessionFactoryRef 指定sql session工廠,跟下面的方法名相等
*/
@Configuration
@MapperScan(basePackages = {"com.dashaui.learning.multisource.mapper.spring"}, sqlSessionFactoryRef = "springSqlSessionFactory")
public class SpringDataSourceConfiguration {
/**
* The constant MAPPER_XML_LOCATION.
*/
public static final String MAPPER_XML_LOCATION = "classpath:mapper/spring/*.xml";
/**
* The Open plat form data source.
*/
@Autowired
@Qualifier("SpringDataSource")
DataSource springDataSource;
/**
* 配置Sql Session模板
*
* @return the sql session template
* @throws Exception the exception
*/
@Bean
public SqlSessionTemplate springSqlSessionTemplate() throws Exception {
return new SqlSessionTemplate(springSqlSessionFactory());
}
/**
* 配置SQL Session工廠
*
* @return the sql session factory
* @throws Exception the exception
*/
@Bean
public SqlSessionFactory springSqlSessionFactory() throws Exception {
SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean();
factoryBean.setDataSource(springDataSource);
//指定XML文件路徑
factoryBean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources(MAPPER_XML_LOCATION));
return factoryBean.getObject();
}
}
配置Test數據庫的數據源
@Configuration
@MapperScan(basePackages = {"com.dashaui.learning.multisource.mapper.test"}, sqlSessionFactoryRef = "testSqlSessionFactory")
public class TestDataSourceConfiguration {
/**
* The constant MAPPER_XML_LOCATION.
*/
public static final String MAPPER_XML_LOCATION = "classpath:mapper/test/*.xml";
/**
* The Open plat form data source.
*/
@Autowired
@Qualifier("TestDataSource")
DataSource testDataSource;
/**
* Open plat form sql session template sql session template.
*
* @return the sql session template
* @throws Exception the exception
*/
@Bean
public SqlSessionTemplate testSqlSessionTemplate() throws Exception {
return new SqlSessionTemplate(testSqlSessionFactory());
}
/**
* Open plat form sql session factory sql session factory.
*
* @return the sql session factory
* @throws Exception the exception
*/
@Bean
public SqlSessionFactory testSqlSessionFactory() throws Exception {
SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean();
factoryBean.setDataSource(testDataSource);
factoryBean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources(MAPPER_XML_LOCATION));
return factoryBean.getObject();
}
}
配置成功即可。配置注意掃描包的路徑和DataSource的name,不要混了。個人實驗沒問題。
Github地址:https://github.com/liaozihong/SpringBoot-Learning/tree/master/SpringBoot-Mybatis-Multisource