SpringBoot使用Atomikos技术整合多数据源的实现
作者：架构师_迦叶
这篇文章主要介绍了SpringBoot使用Atomikos技术整合多数据源的实现，文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值，需要的朋友们下面随着小编来一起学习学习吧
Atomikos是一个为Java平台提供增值服务的并且开源类事务管理器，如果将事务统一注册到Atomikos中，则可以统一管理。常用于后台管理系统的多数据库操作。
多数据源的划分方式
方式： a、按包名 b、按注解区分
Springboot默认集成事务,只主要在方法上加上@Transactional即可，不需要开启@EnableTransactionManagement注解
如果多个数据库，则每个方法都需要单独设置事务管理器@Transactional(transactionManager = "test2TransactionManager")，如果事务中含多数据源则无效。
Atomikos使用
1.依赖引入
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jta-atomikos</artifactId> </dependency>
2.多数据源配置文件
# Mysql 1 mysql.datasource.test1.url = jdbc:mysql://localhost:3306/test01?useUnicode=true&characterEncoding=utf-8 mysql.datasource.test1.username = root mysql.datasource.test1.password = root mysql.datasource.test1.minPoolSize = 3 mysql.datasource.test1.maxPoolSize = 25 mysql.datasource.test1.maxLifetime = 20000 mysql.datasource.test1.borrowConnectionTimeout = 30 mysql.datasource.test1.loginTimeout = 30 mysql.datasource.test1.maintenanceInterval = 60 mysql.datasource.test1.maxIdleTime = 60 # Mysql 2 mysql.datasource.test2.url =jdbc:mysql://localhost:3306/test02?useUnicode=true&characterEncoding=utf-8 mysql.datasource.test2.username =root mysql.datasource.test2.password =root mysql.datasource.test2.minPoolSize = 3 mysql.datasource.test2.maxPoolSize = 25 mysql.datasource.test2.maxLifetime = 20000 mysql.datasource.test2.borrowConnectionTimeout = 30 mysql.datasource.test2.loginTimeout = 30 mysql.datasource.test2.maintenanceInterval = 60 mysql.datasource.test2.maxIdleTime = 60
3.配置代码
@Data
@ConfigurationProperties(prefix = "mysql.datasource.test1")
public class DBConfig1 {
private String url;
private String username;
private String password;
private int minPoolSize;
private int maxPoolSize;
private int maxLifetime;
private int borrowConnectionTimeout;
private int loginTimeout;
private int maintenanceInterval;
private int maxIdleTime;
private String testQuery;
}
@Data
@ConfigurationProperties(prefix = "mysql.datasource.test2")
public class DBConfig2 {
private String url;
private String username;
private String password;
private int minPoolSize;
private int maxPoolSize;
private int maxLifetime;
private int borrowConnectionTimeout;
private int loginTimeout;
private int maintenanceInterval;
private int maxIdleTime;
private String testQuery;
}
@Configuration
// basePackages 最好分开配置 如果放在同一个文件夹可能会报错
@MapperScan(basePackages = "com.itmayiedu.test01", sqlSessionTemplateRef = "testSqlSessionTemplate")
public class MyBatisConfig1 {
// 配置数据源
@Primary
@Bean(name = "testDataSource")
public DataSource testDataSource(DBConfig1 testConfig) throws SQLException {
MysqlXADataSource mysqlXaDataSource = new MysqlXADataSource();
mysqlXaDataSource.setUrl(testConfig.getUrl());
mysqlXaDataSource.setPinGlobalTxToPhysicalConnection(true);
mysqlXaDataSource.setPassword(testConfig.getPassword());
mysqlXaDataSource.setUser(testConfig.getUsername());
mysqlXaDataSource.setPinGlobalTxToPhysicalConnection(true);
AtomikosDataSourceBean xaDataSource = new AtomikosDataSourceBean();
xaDataSource.setXaDataSource(mysqlXaDataSource);
xaDataSource.setUniqueResourceName("testDataSource");
xaDataSource.setMinPoolSize(testConfig.getMinPoolSize());
xaDataSource.setMaxPoolSize(testConfig.getMaxPoolSize());
xaDataSource.setMaxLifetime(testConfig.getMaxLifetime());
xaDataSource.setBorrowConnectionTimeout(testConfig.getBorrowConnectionTimeout());
xaDataSource.setLoginTimeout(testConfig.getLoginTimeout());
xaDataSource.setMaintenanceInterval(testConfig.getMaintenanceInterval());
xaDataSource.setMaxIdleTime(testConfig.getMaxIdleTime());
xaDataSource.setTestQuery(testConfig.getTestQuery());
return xaDataSource;
}
@Primary
@Bean(name = "testSqlSessionFactory")
public SqlSessionFactory testSqlSessionFactory(@Qualifier("testDataSource") DataSource dataSource)
throws Exception {
SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
bean.setDataSource(dataSource);
return bean.getObject();
}
@Primary
@Bean(name = "testSqlSessionTemplate")
public SqlSessionTemplate testSqlSessionTemplate(
@Qualifier("testSqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
return new SqlSessionTemplate(sqlSessionFactory);
}
}
@Configuration
@MapperScan(basePackages = "com.itmayiedu.test02", sqlSessionTemplateRef = "test2SqlSessionTemplate")
public class MyBatisConfig2 {
// 配置数据源
@Bean(name = "test2DataSource")
public DataSource testDataSource(DBConfig2 testConfig) throws SQLException {
MysqlXADataSource mysqlXaDataSource = new MysqlXADataSource();
mysqlXaDataSource.setUrl(testConfig.getUrl());
mysqlXaDataSource.setPinGlobalTxToPhysicalConnection(true);
mysqlXaDataSource.setPassword(testConfig.getPassword());
mysqlXaDataSource.setUser(testConfig.getUsername());
mysqlXaDataSource.setPinGlobalTxToPhysicalConnection(true);
AtomikosDataSourceBean xaDataSource = new AtomikosDataSourceBean();
xaDataSource.setXaDataSource(mysqlXaDataSource);
xaDataSource.setUniqueResourceName("test2DataSource");
xaDataSource.setMinPoolSize(testConfig.getMinPoolSize());
xaDataSource.setMaxPoolSize(testConfig.getMaxPoolSize());
xaDataSource.setMaxLifetime(testConfig.getMaxLifetime());
xaDataSource.setBorrowConnectionTimeout(testConfig.getBorrowConnectionTimeout());
xaDataSource.setLoginTimeout(testConfig.getLoginTimeout());
xaDataSource.setMaintenanceInterval(testConfig.getMaintenanceInterval());
xaDataSource.setMaxIdleTime(testConfig.getMaxIdleTime());
xaDataSource.setTestQuery(testConfig.getTestQuery());
return xaDataSource;
}
@Bean(name = "test2SqlSessionFactory")
public SqlSessionFactory testSqlSessionFactory(@Qualifier("test2DataSource") DataSource dataSource)
throws Exception {
SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
bean.setDataSource(dataSource);
return bean.getObject();
}
@Bean(name = "test2SqlSessionTemplate")
public SqlSessionTemplate testSqlSessionTemplate(
@Qualifier("test2SqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
return new SqlSessionTemplate(sqlSessionFactory);
}
}
4.启动加载配置
@EnableConfigurationProperties(value = { DBConfig1.class, DBConfig2.class })
使用还是正常使用@Transactional方式
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