<dependency>
<groupId>org.apache.shardingsphere</groupId>
<artifactId>sharding-jdbc-core</artifactId>
<version>${sharding-sphere.version}</version>
</dependency>
<!-- 使用XA事务时,需要引入此模块 -->
<dependency>
<groupId>org.apache.shardingsphere</groupId>
<artifactId>sharding-transaction-xa-core</artifactId>
<version>${shardingsphere.version}</version>
</dependency>
<!-- 使用BASE事务时,需要引入此模块 -->
<dependency>
<groupId>org.apache.shardingsphere</groupId>
<artifactId>sharding-transaction-base-seata-at</artifactId>
<version>${sharding-sphere.version}</version>
</dependency>
TransactionTypeHolder.set(TransactionType.XA); // 支持TransactionType.LOCAL, TransactionType.XA, TransactionType.BASE
try (Connection connection = dataSource.getConnection()) { // dataSource的类型为ShardingDataSource
connection.setAutoCommit(false);
PreparedStatement preparedStatement = connection.prepareStatement("INSERT INTO t_order (user_id, status) VALUES (?, ?)");
preparedStatement.setObject(1, i);
preparedStatement.setObject(2, "init");
preparedStatement.executeUpdate();
connection.commit();
}
<dependency>
<groupId>org.apache.shardingsphere</groupId>
<artifactId>sharding-jdbc-spring-namespace</artifactId>
<version>${shardingsphere.version}</version>
</dependency>
<!-- 使用XA事务时,需要引入此模块 -->
<dependency>
<groupId>org.apache.shardingsphere</groupId>
<artifactId>sharding-transaction-xa-core</artifactId>
<version>${shardingsphere.version}</version>
</dependency>
<!-- 使用BASE事务时,需要引入此模块 -->
<dependency>
<groupId>org.apache.shardingsphere</groupId>
<artifactId>sharding-transaction-base-seata-at</artifactId>
<version>${sharding-sphere.version}</version>
</dependency>
<!-- 进行ShardingDataSource的相关配置 -->
...
<!-- 开启自动扫描@ShardingTransactionType注解,使用Spring原生的AOP在类和方法上进行增强 -->
<sharding:tx-type-annotation-driven />
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="shardingDataSource" />
</bean>
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="shardingDataSource" />
</bean>
<tx:annotation-driven />
@Transactional
@ShardingTransactionType(TransactionType.XA) // 支持TransactionType.LOCAL, TransactionType.XA, TransactionType.BASE
public void insert() {
jdbcTemplate.execute("INSERT INTO t_order (user_id, status) VALUES (?, ?)", (PreparedStatementCallback<Object>) preparedStatement -> {
preparedStatement.setObject(1, i);
preparedStatement.setObject(2, "init");
preparedStatement.executeUpdate();
});
}
<dependency>
<groupId>org.apache.shardingsphere</groupId>
<artifactId>sharding-jdbc-spring-boot-starter</artifactId>
<version>${shardingsphere.version}</version>
</dependency>
<!-- 使用XA事务时,需要引入此模块 -->
<dependency>
<groupId>org.apache.shardingsphere</groupId>
<artifactId>sharding-transaction-xa-core</artifactId>
<version>${shardingsphere.version}</version>
</dependency>
<!-- 使用BASE事务时,需要引入此模块 -->
<dependency>
<groupId>org.apache.shardingsphere</groupId>
<artifactId>sharding-transaction-base-seata-at</artifactId>
<version>${sharding-sphere.version}</version>
</dependency>
@Configuration
@EnableTransactionManagement
public class TransactionConfiguration {
@Bean
public PlatformTransactionManager txManager(final DataSource dataSource) {
return new DataSourceTransactionManager(dataSource);
}
@Bean
public JdbcTemplate jdbcTemplate(final DataSource dataSource) {
return new JdbcTemplate(dataSource);
}
}
@Transactional
@ShardingTransactionType(TransactionType.XA) // 支持TransactionType.LOCAL, TransactionType.XA, TransactionType.BASE
public void insert() {
jdbcTemplate.execute("INSERT INTO t_order (user_id, status) VALUES (?, ?)", (PreparedStatementCallback<Object>) preparedStatement -> {
preparedStatement.setObject(1, i);
preparedStatement.setObject(2, "init");
preparedStatement.executeUpdate();
});
}
ShardingSphere默认的XA事务管理器为Atomikos,在项目的logs目录中会生成xa_tx.log
, 这是XA崩溃恢复时所需的日志,请勿删除。
也可以通过在项目的classpath中添加jta.properties
来定制化Atomikos配置项。具体的配置规则请参考Atomikos的官方文档。
1.按照seata-work-shop中的步骤,下载并启动seata server,参考 Step6 和 Step7即可。
2.在每一个分片数据库实例中执创建undo_log表(以MySQL为例)
CREATE TABLE IF NOT EXISTS `undo_log`
(
`id` BIGINT(20) NOT NULL AUTO_INCREMENT COMMENT 'increment id',
`branch_id` BIGINT(20) NOT NULL COMMENT 'branch transaction id',
`xid` VARCHAR(100) NOT NULL COMMENT 'global transaction id',
`context` VARCHAR(128) NOT NULL COMMENT 'undo_log context,such as serialization',
`rollback_info` LONGBLOB NOT NULL COMMENT 'rollback info',
`log_status` INT(11) NOT NULL COMMENT '0:normal status,1:defense status',
`log_created` DATETIME NOT NULL COMMENT 'create datetime',
`log_modified` DATETIME NOT NULL COMMENT 'modify datetime',
PRIMARY KEY (`id`),
UNIQUE KEY `ux_undo_log` (`xid`, `branch_id`)
) ENGINE = InnoDB
AUTO_INCREMENT = 1
DEFAULT CHARSET = utf8 COMMENT ='AT transaction mode undo table';
3.在classpath中增加seata.conf
client {
application.id = example ## 应用唯一id
transaction.service.group = my_test_tx_group ## 所属事务组
}
4.根据实际场景修改seata的file.conf和registry.conf文件