Seata 是一款开源的分布式事务解决方案,致力于提供高性能和简单易用的分布式事务服务。Seata 将为用户提供了 AT、TCC、SAGA 和 XA 事务模式,为用户打造一站式的分布式解决方案。
Seata Docker 安装 查看Docker 安装 文档
- Docker 起seata 服务的话,本地的项目可能无法使用seata。因为docker起的seata服务注册到nacos使用的是容器ip,而本地起的服务注册的nacos使用的是宿主机ip。两者不互通。所以seata服务 无法访问nacos中的其他的项目。无法使用。会报错。
版本区分
- 1.5.0 以下 版本中的配置文件 在/seata-server/resources 是以conf文件格式存在 file.conf 和 registry.conf
- 1.5.0 以上 版本中的配置文件 在/seata-server/resources 是以yml文件格式存在 application.yml
1.5.0 以下 版本 配置文件 registry.conf
- registry注册模块: 可`选值file 、nacos 、eureka、redis、zk、consul、etcd3、sofa
- config 配置模块: 可选值 file、nacos 、apollo、zk、consul、etcd3。这边如果选择nacos那么需要把配置访达nacos的配置中心去。如果选择file,那么就用到了file.conf这个文件。
1.5.0 以上版本 配置文件 conf/application.yml
registry
注册模块config
配置模块
1. 集成 Seata - 1.5.0 以下版本
2.1. 创建数据库
创建一个新的数据库,例如snack_shop_seata,建下面三张表。
drop table if exists `global_table`; create table `global_table` ( `xid` varchar(128) not null, `transaction_id` bigint, `status` tinyint not null, `application_id` varchar(32), `transaction_service_group` varchar(32), `transaction_name` varchar(128), `timeout` int, `begin_time` bigint, `application_data` varchar(2000), `gmt_create` datetime, `gmt_modified` datetime, primary key (`xid`), key `idx_gmt_modified_status` (`gmt_modified`, `status`), key `idx_transaction_id` (`transaction_id`) ); -- the table to store BranchSession data drop table if exists `branch_table`; create table `branch_table` ( `branch_id` bigint not null, `xid` varchar(128) not null, `transaction_id` bigint , `resource_group_id` varchar(32), `resource_id` varchar(256) , `lock_key` varchar(128) , `branch_type` varchar(8) , `status` tinyint, `client_id` varchar(64), `application_data` varchar(2000), `gmt_create` datetime, `gmt_modified` datetime, primary key (`branch_id`), key `idx_xid` (`xid`) ); -- the table to store lock data drop table if exists `lock_table`; create table `lock_table` ( `row_key` varchar(128) not null, `xid` varchar(96), `transaction_id` long , `branch_id` long, `resource_id` varchar(256) , `table_name` varchar(32) , `pk` varchar(36) , `gmt_create` datetime , `gmt_modified` datetime, primary key(`row_key`) );
另外,在每个业务库中 新增undo_log表
create table undo_log ( id bigint auto_increment primary key, branch_id bigint not null, xid varchar(100) not null, context varchar(128) not null, rollback_info longblob not null, log_status int not null, log_created datetime not null, log_modified datetime not null, ext varchar(100) null, constraint ux_undo_log unique (xid, branch_id) ) charset = utf8;
2.2 修改配置文件
下载seata包,github地址,下载后 修改配置文件 file.conf 和 registry.conf
registry.conf是配置文件,里面需要指定一个注册中心和配置中心。
- 注册中心 : 可选项 file 、nacos 、eureka、redis、zk、consul、etcd3、sofa ,如果选择file,则会在file.conf中配置,如果选择nacos 就会注册到nacos中。
- 配置中心: file、nacos 、apollo、zk、consul、etcd3,如果选择file,则会在file.conf中配置,如果选择nacos 就需要再nacos中配置
file.conf : 如果上面选择的是file,则用的就是 file.conf 这个文件,可选项 file、db、redis,db就选择数据库,填写相关链接信息,redis就填写redis相关链接信息。
1. 使用 nacos 作为注册中心和配置中心
1. 配置seata-server配置文件
这边是修改的seata服务器配置文件,如果是本地下载的则是修改下载的seata服务包的中的registry.conf ,如果是docker启动的 则是修改docker挂载的配置文件。
registry.conf
registry { # file 、nacos 、eureka、redis、zk、consul、etcd3、sofa type = "nacos" nacos { #这个是seata服务注册在 nacos注册中心的名字 application = "seata-server" #naocs 地址 serverAddr = "127.0.0.1:8848" #nacos 注册中心 的分组名称 group = "DEFAULT_GROUP" #nacos 注册中心 的名称空间, 不传则使用的是nacos默认的名称空间 即public namespace = "b3db5211-7532-4372-b55b-feb9a4be9b8b" #集群,默认 cluster = "default" #nacos 账号 username = "nacos" #nacos 密码 password = "nacos" } eureka { serviceUrl = "http://localhost:8761/eureka" application = "default" weight = "1" } redis { serverAddr = "localhost:6379" db = 0 password = "" cluster = "default" timeout = 0 } zk { cluster = "default" serverAddr = "127.0.0.1:2181" sessionTimeout = 6000 connectTimeout = 2000 username = "" password = "" } consul { cluster = "default" serverAddr = "127.0.0.1:8500" aclToken = "" } etcd3 { cluster = "default" serverAddr = "http://localhost:2379" } sofa { serverAddr = "127.0.0.1:9603" application = "default" region = "DEFAULT_ZONE" datacenter = "DefaultDataCenter" cluster = "default" group = "SEATA_GROUP" addressWaitTime = "3000" } file { name = "file.conf" } } config { # file、nacos 、apollo、zk、consul、etcd3 type = "nacos" nacos { #nacos地址 serverAddr = "127.0.0.1:8848" #nacos 配置中心 名称空间,不传则使用的是nacos默认的名称空间 即public namespace = "b3db5211-7532-4372-b55b-feb9a4be9b8b" #nacos 配置中心 分组 group = "DEFAULT_GROUP" #nacos 账号 username = "nacos" #nacos 密码 password = "naocs" #naocs 配置中心 配置文件的 dataId dataId = "seataServer.properties" } consul { serverAddr = "127.0.0.1:8500" aclToken = "" } apollo { appId = "seata-server" ## apolloConfigService will cover apolloMeta apolloMeta = "http://192.168.1.204:8801" apolloConfigService = "http://192.168.1.204:8080" namespace = "application" apolloAccesskeySecret = "" cluster = "seata" } zk { serverAddr = "127.0.0.1:2181" sessionTimeout = 6000 connectTimeout = 2000 username = "" password = "" nodePath = "/seata/seata.properties" } etcd3 { serverAddr = "http://localhost:2379" } file { name = "file.conf" } }
2. 配置nacos中的配置中心文件
这边修改的是 在nacos中的配置文件。
nacos配置git参考 复制config.txt内容,(复制在了该文档的目录下) 创建一个dataId为 seataServer.properties的配置
其中 配置文件需要修改三个地方:
- store.mode=db 默认是file 选择bd
- store.db.url 选择db之后 修改相关db的信息
- 修改 vgroupMappingnacos中 vgroupMapping 需要和项目配置文件中的vgroupMapping统一起来。
nacos中 配置文件
#For details about configuration items, see https://seata.io/zh-cn/docs/user/configurations.html #Transport configuration, for client and server transport.type=TCP transport.server=NIO transport.heartbeat=true transport.enableTmClientBatchSendRequest=false transport.enableRmClientBatchSendRequest=true transport.enableTcServerBatchSendResponse=false transport.rpcRmRequestTimeout=30000 transport.rpcTmRequestTimeout=30000 transport.rpcTcRequestTimeout=30000 transport.threadFactory.bossThreadPrefix=NettyBoss transport.threadFactory.workerThreadPrefix=NettyServerNIOWorker transport.threadFactory.serverExecutorThreadPrefix=NettyServerBizHandler transport.threadFactory.shareBossWorker=false transport.threadFactory.clientSelectorThreadPrefix=NettyClientSelector transport.threadFactory.clientSelectorThreadSize=1 transport.threadFactory.clientWorkerThreadPrefix=NettyClientWorkerThread transport.threadFactory.bossThreadSize=1 transport.threadFactory.workerThreadSize=default transport.shutdown.wait=3 transport.serialization=seata transport.compressor=none #Transaction routing rules configuration, only for the client #注意! 这边配置的vgroupMapping 需要和项目 yaml中统一,如果项目中配置文件使用的是 my_test_tx_group 则nacos中的配置文件也使用my_test_tx_group,如果项目中使用的是application.name命名的,则nacos中也需要这样。即需要和项目中的统一就行。 #service.vgroupMapping.my_test_tx_group=default service.vgroupMapping.shop-product_tx_group=default service.vgroupMapping.shop-ware_tx_group=default #If you use a registry, you can ignore it service.default.grouplist=127.0.0.1:8091 service.enableDegrade=false service.disableGlobalTransaction=false #Transaction rule configuration, only for the client client.rm.asyncCommitBufferLimit=10000 client.rm.lock.retryInterval=10 client.rm.lock.retryTimes=30 client.rm.lock.retryPolicyBranchRollbackOnConflict=true client.rm.reportRetryCount=5 client.rm.tableMetaCheckEnable=true client.rm.tableMetaCheckerInterval=60000 client.rm.sqlParserType=druid client.rm.reportSuccessEnable=false client.rm.sagaBranchRegisterEnable=false client.rm.sagaJsonParser=fastjson client.rm.tccActionInterceptorOrder=-2147482648 client.tm.commitRetryCount=5 client.tm.rollbackRetryCount=5 client.tm.defaultGlobalTransactionTimeout=60000 client.tm.degradeCheck=false client.tm.degradeCheckAllowTimes=10 client.tm.degradeCheckPeriod=2000 client.tm.interceptorOrder=-2147482648 client.undo.dataValidation=true client.undo.logSerialization=jackson client.undo.onlyCareUpdateColumns=true server.undo.logSaveDays=7 server.undo.logDeletePeriod=86400000 client.undo.logTable=undo_log client.undo.compress.enable=true client.undo.compress.type=zip client.undo.compress.threshold=64k #For TCC transaction mode tcc.fence.logTableName=tcc_fence_log tcc.fence.cleanPeriod=1h #Log rule configuration, for client and server log.exceptionRate=100 #Transaction storage configuration, only for the server. The file, db, and redis configuration values are optional. # 修改为db store.mode=db store.lock.mode=db store.session.mode=db #Used for password encryption store.publicKey= #If `store.mode,store.lock.mode,store.session.mode` are not equal to `file`, you can remove the configuration block. store.file.dir=file_store/data store.file.maxBranchSessionSize=16384 store.file.maxGlobalSessionSize=512 store.file.fileWriteBufferCacheSize=16384 store.file.flushDiskMode=async store.file.sessionReloadReadSize=100 #These configurations are required if the `store mode` is `db`. If `store.mode,store.lock.mode,store.session.mode` are not equal to `db`, you can remove the configuration block. #修改db的连接信息 这个库 就是2.1中创建的库 store.db.datasource=druid store.db.dbType=mysql store.db.driverClassName=com.mysql.jdbc.Driver store.db.url=jdbc:mysql://127.0.0.1:3306/snack_shop_seata?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf8 store.db.user=root store.db.password=root store.db.minConn=5 store.db.maxConn=30 store.db.globalTable=global_table store.db.branchTable=branch_table store.db.distributedLockTable=distributed_lock store.db.queryLimit=100 store.db.lockTable=lock_table store.db.maxWait=5000 #These configurations are required if the `store mode` is `redis`. If `store.mode,store.lock.mode,store.session.mode` are not equal to `redis`, you can remove the configuration block. store.redis.mode=single store.redis.single.host=127.0.0.1 store.redis.single.port=6379 store.redis.sentinel.masterName= store.redis.sentinel.sentinelHosts= store.redis.maxConn=10 store.redis.minConn=1 store.redis.maxTotal=100 store.redis.database=0 store.redis.password= store.redis.queryLimit=100 #Transaction rule configuration, only for the server server.recovery.committingRetryPeriod=1000 server.recovery.asynCommittingRetryPeriod=1000 server.recovery.rollbackingRetryPeriod=1000 server.recovery.timeoutRetryPeriod=1000 server.maxCommitRetryTimeout=-1 server.maxRollbackRetryTimeout=-1 server.rollbackRetryTimeoutUnlockEnable=false server.distributedLockExpireTime=10000 server.xaerNotaRetryTimeout=60000 server.session.branchAsyncQueueSize=5000 server.session.enableBranchAsyncRemove=false server.enableParallelRequestHandle=false #Metrics configuration, only for the server metrics.enabled=false metrics.registryType=compact metrics.exporterList=prometheus metrics.exporterPrometheusPort=9898
2.3 项目中配置seata
需要用到分布式事务的 都需要配置。
1. 引入Seata
注意 这边引入的seata版本
<properties> <java.version>1.8</java.version> <spring-cloud.version>2021.0.5</spring-cloud.version> <seata.version>1.4.2</seata.version> </properties> <!-- 引入 seata 作为全局事务 --> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-alibaba-seata</artifactId> <!-- <exclusions> <exclusion> <groupId>io.seata</groupId> <artifactId>seata-all</artifactId> </exclusion> </exclusions> --> </dependency> <dependency> <groupId>io.seata</groupId> <artifactId>seata-all</artifactId> <version>${seata.version}</version> </dependency>
2. 修改配置文件
seata: application-id: ${spring.application.name} enabled: true #事务群组(可以每个应用单独取名,也可以使用相同的名字)但是不管用那种,都需要和服务端在nacos-config配置文件中的保持一致 tx-service-group: shop-product_tx_group # tx-service-group: shop-my_test_tx_group config: type: nacos nacos: #nacos 配置中心 名称空间 不传默认是public保留空间 namespace: b3db5211-7532-4372-b55b-feb9a4be9b8b server-addr: localhost:8848 #nacos 配置中心的组 group: "DEFAULT_GROUP" username: "nacos" password: "nacos" #nacos 配置中心 配置文件的data-id data-id: "seataServer.properties" registry: type: nacos nacos: #需要和server端保持一致,即server注册在nacos中的服务名,默认是seata-server application: seata-server server-addr: localhost:8848 #需要和server端保持一致,即server注册在nacos中的分组名称,默认是SEATA_GROUP group: "DEFAULT_GROUP" #需要和 nacos的配置文件 在同一命名空间 namespace: b3db5211-7532-4372-b55b-feb9a4be9b8b username: "nacos" password: "nacos"
3. 数据源配置
官方demo中配置了这个数据源。但是测试 这个数据源不配置 分布式事务依旧生效
@Configuration public class DataSourceProxyConfig { @Bean @ConfigurationProperties(prefix = "spring.datasource") public DataSource druidDataSource() { DruidDataSource druidDataSource = new DruidDataSource(); return druidDataSource; } //配置数据源 @Primary @Bean public DataSourceProxy dataSourceProxy(DataSource druidDataSource) { return new DataSourceProxy(druidDataSource); } }
2.4 启动Seata
进入bin目录,使用 sh seata-server.sh 启动,启动无报错,并且能在nacos上看到注册上来的服务即启动成功。
异常:
- JDK版本过高: 如果出现下面错误,切换jdk版本即可。
2. 集成 Seata - 1.5.0 以上版本
2.1. 创建数据库
CREATE TABLE IF NOT EXISTS `global_table` ( `xid` VARCHAR(128) NOT NULL, `transaction_id` BIGINT, `status` TINYINT NOT NULL, `application_id` VARCHAR(32), `transaction_service_group` VARCHAR(32), `transaction_name` VARCHAR(128), `timeout` INT, `begin_time` BIGINT, `application_data` VARCHAR(2000), `gmt_create` DATETIME, `gmt_modified` DATETIME, PRIMARY KEY (`xid`), KEY `idx_status_gmt_modified` (`status` , `gmt_modified`), KEY `idx_transaction_id` (`transaction_id`) ) ENGINE = InnoDB DEFAULT CHARSET = utf8mb4; -- the table to store BranchSession data CREATE TABLE IF NOT EXISTS `branch_table` ( `branch_id` BIGINT NOT NULL, `xid` VARCHAR(128) NOT NULL, `transaction_id` BIGINT, `resource_group_id` VARCHAR(32), `resource_id` VARCHAR(256), `branch_type` VARCHAR(8), `status` TINYINT, `client_id` VARCHAR(64), `application_data` VARCHAR(2000), `gmt_create` DATETIME(6), `gmt_modified` DATETIME(6), PRIMARY KEY (`branch_id`), KEY `idx_xid` (`xid`) ) ENGINE = InnoDB DEFAULT CHARSET = utf8mb4; -- the table to store lock data CREATE TABLE IF NOT EXISTS `lock_table` ( `row_key` VARCHAR(128) NOT NULL, `xid` VARCHAR(128), `transaction_id` BIGINT, `branch_id` BIGINT NOT NULL, `resource_id` VARCHAR(256), `table_name` VARCHAR(32), `pk` VARCHAR(36), `status` TINYINT NOT NULL DEFAULT '0' COMMENT '0:locked ,1:rollbacking', `gmt_create` DATETIME, `gmt_modified` DATETIME, PRIMARY KEY (`row_key`), KEY `idx_status` (`status`), KEY `idx_branch_id` (`branch_id`), KEY `idx_xid_and_branch_id` (`xid` , `branch_id`) ) ENGINE = InnoDB DEFAULT CHARSET = utf8mb4; CREATE TABLE IF NOT EXISTS `distributed_lock` ( `lock_key` CHAR(20) NOT NULL, `lock_value` VARCHAR(20) NOT NULL, `expire` BIGINT, primary key (`lock_key`) ) ENGINE = InnoDB DEFAULT CHARSET = utf8mb4; INSERT INTO `distributed_lock` (lock_key, lock_value, expire) VALUES ('AsyncCommitting', ' ', 0); INSERT INTO `distributed_lock` (lock_key, lock_value, expire) VALUES ('RetryCommitting', ' ', 0); INSERT INTO `distributed_lock` (lock_key, lock_value, expire) VALUES ('RetryRollbacking', ' ', 0); INSERT INTO `distributed_lock` (lock_key, lock_value, expire) VALUES ('TxTimeoutCheck', ' ', 0);
2.2. 配置 conf/application.yaml 配置文件
需要修改的配置为 config
模块和 registry
模块
其中配置模块中 data-id 是 nacos 上的配置文件
seata: config: # support: nacos, consul, apollo, zk, etcd3 type: nacos nacos: server-addr: 127.0.0.1:8848 namespace: 15c15b10-ad51-43c8-9c33-0ccf7a996ab8 group: SEATA_GROUP data-id: seataServer.properties #username: nacos #password: nacos context-path: ##if use MSE Nacos with auth, mutex with username/password attribute #access-key: #secret-key: registry: # support: nacos, eureka, redis, zk, consul, etcd3, sofa type: nacos nacos: application: seata-server server-addr: 127.0.0.1:8848 group: SEATA_GROUP namespace: 15c15b10-ad51-43c8-9c33-0ccf7a996ab8 cluster: default #username: nacos #password: nacos context-path: ##if use MSE Nacos with auth, mutex with username/password attribute #access-key: #secret-key:
2.3. 在 nacos 上创建配置文件seataServer.properties
该配置文件名称和上面配置文件中的 data-id 相同 (注意 namespace
和 group
)
需要修改的点
- store.mode=DB 模式改为 db
- 配置store.db.url 等相关数据库连接信息
#For details about configuration items, see https://seata.io/zh-cn/docs/user/configurations.html #Transport configuration, for client and server transport.type=TCP transport.server=NIO transport.heartbeat=true transport.enableTmClientBatchSendRequest=false transport.enableRmClientBatchSendRequest=true transport.enableTcServerBatchSendResponse=false transport.rpcRmRequestTimeout=30000 transport.rpcTmRequestTimeout=30000 transport.rpcTcRequestTimeout=30000 transport.threadFactory.bossThreadPrefix=NettyBoss transport.threadFactory.workerThreadPrefix=NettyServerNIOWorker transport.threadFactory.serverExecutorThreadPrefix=NettyServerBizHandler transport.threadFactory.shareBossWorker=false transport.threadFactory.clientSelectorThreadPrefix=NettyClientSelector transport.threadFactory.clientSelectorThreadSize=1 transport.threadFactory.clientWorkerThreadPrefix=NettyClientWorkerThread transport.threadFactory.bossThreadSize=1 transport.threadFactory.workerThreadSize=default transport.shutdown.wait=3 transport.serialization=seata transport.compressor=none #Transaction routing rules configuration, only for the client service.vgroupMapping.default_tx_group=default #If you use a registry, you can ignore it service.default.grouplist=1127.0.0.1:8091 service.enableDegrade=false service.disableGlobalTransaction=false #Transaction rule configuration, only for the client client.rm.asyncCommitBufferLimit=10000 client.rm.lock.retryInterval=10 client.rm.lock.retryTimes=30 client.rm.lock.retryPolicyBranchRollbackOnConflict=true client.rm.reportRetryCount=5 client.rm.tableMetaCheckEnable=true client.rm.tableMetaCheckerInterval=60000 client.rm.sqlParserType=druid client.rm.reportSuccessEnable=false client.rm.sagaBranchRegisterEnable=false client.rm.sagaJsonParser=fastjson client.rm.tccActionInterceptorOrder=-2147482648 client.tm.commitRetryCount=5 client.tm.rollbackRetryCount=5 client.tm.defaultGlobalTransactionTimeout=60000 client.tm.degradeCheck=false client.tm.degradeCheckAllowTimes=10 client.tm.degradeCheckPeriod=2000 client.tm.interceptorOrder=-2147482648 client.undo.dataValidation=true client.undo.logSerialization=jackson client.undo.onlyCareUpdateColumns=true server.undo.logSaveDays=7 server.undo.logDeletePeriod=86400000 client.undo.logTable=undo_log client.undo.compress.enable=true client.undo.compress.type=zip client.undo.compress.threshold=64k #For TCC transaction mode tcc.fence.logTableName=tcc_fence_log tcc.fence.cleanPeriod=1h #Log rule configuration, for client and server log.exceptionRate=100 #Transaction storage configuration, only for the server. The file, DB, and redis configuration values are optional. store.mode=DB store.lock.mode=DB store.session.mode=DB #Used for password encryption store.publicKey= #If `store.mode,store.lock.mode,store.session.mode` are not equal to `file`, you can remove the configuration block. store.file.dir=file_store/data store.file.maxBranchSessionSize=16384 store.file.maxGlobalSessionSize=512 store.file.fileWriteBufferCacheSize=16384 store.file.flushDiskMode=async store.file.sessionReloadReadSize=100 #These configurations are required if the `store mode` is `db`. If `store.mode,store.lock.mode,store.session.mode` are not equal to `db`, you can remove the configuration block. store.db.datasource=druid store.db.dbType=mysql store.db.driverClassName=com.mysql.jdbc.Driver store.db.url=jdbc:mysql://127.0.0.1:3306/snack_shop_seata?useUnicode=true&characterEncoding=UTF-8&useSSL=false&serverTimezone=UTC store.db.user=root store.db.password=root store.db.minConn=5 store.db.maxConn=30 store.db.globalTable=global_table store.db.branchTable=branch_table store.db.distributedLockTable=distributed_lock store.db.queryLimit=100 store.db.lockTable=lock_table store.db.maxWait=5000 #These configurations are required if the `store mode` is `redis`. If `store.mode,store.lock.mode,store.session.mode` are not equal to `redis`, you can remove the configuration block. store.redis.mode=single store.redis.single.host=192.168.1.10 store.redis.single.port=6379 store.redis.sentinel.masterName= store.redis.sentinel.sentinelHosts= store.redis.maxConn=10 store.redis.minConn=1 store.redis.maxTotal=100 store.redis.database=0 store.redis.password= store.redis.queryLimit=100 #Transaction rule configuration, only for the server server.recovery.committingRetryPeriod=1000 server.recovery.asynCommittingRetryPeriod=1000 server.recovery.rollbackingRetryPeriod=1000 server.recovery.timeoutRetryPeriod=1000 server.maxCommitRetryTimeout=-1 server.maxRollbackRetryTimeout=-1 server.rollbackRetryTimeoutUnlockEnable=false server.distributedLockExpireTime=10000 server.xaerNotaRetryTimeout=60000 server.session.branchAsyncQueueSize=5000 server.session.enableBranchAsyncRemove=false server.enableParallelRequestHandle=false #Metrics configuration, only for the server metrics.enabled=false metrics.registryType=compact metrics.exporterList=prometheus metrics.exporterPrometheusPort=9898
2.4. 修改项目的数据源
package com.z001.snack.common.database.config; import com.alibaba.druid.pool.DruidDataSource; import io.seata.rm.datasource.DataSourceProxy; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.Primary; import javax.sql.DataSource; /** * @author z001 * @Date 2024/1/9 13:19 */ @Configuration public class DataSourceProxyConfig { @Bean @ConfigurationProperties(prefix = "spring.datasource") public DataSource druidDataSource() { DruidDataSource druidDataSource = new DruidDataSource(); return druidDataSource; } //配置数据源 @Primary @Bean public DataSourceProxy dataSourceProxy(DataSource druidDataSource) { return new DataSourceProxy(druidDataSource); } }
2.5. 启动 seata 服务
启动后在 nacos 中就可以看到 seata 的服务。同时在代码中使用
@GlobalTransactional(rollbackFor = Exception.class)
来实现分布式事务
#进入下载的seata安装包的bin目录下 #启动seata sh seata-server.sh ./seata-server.sh start #关闭seata ./seata-server.sh stop