seata官網(wǎng)：http://seata.io/zh-cn/index.html
seata-server： https://github.com/seata/seata/releases
SpringCloud整合Seata出現(xiàn)異常數(shù)據(jù)未回滾的解決方案

二. seata-server配置

1.1 下載seater-server

下載指定版本seata-server，本案例使用v1.6.1版本。

1.2 修改seata/conf/application.yml配置文件(已刪除無用配置)

server:
  port: 7091
spring:
  application:
    name: seata-server  # seata-server服務(wù)名
logging:
  config: classpath:logback-spring.xml
  file:
    path: ${user.home}/seata/runlogs  # 指定日志路徑
  extend:
    logstash-appender:
      destination: 127.0.0.1:4560
    kafka-appender:
      bootstrap-servers: 127.0.0.1:9092
      topic: logback_to_logstash

# seata可視化web界面賬號密碼
console:
  user:
    username: seata
    password: seata

seata:
	# 配置中心
  config:
    # support: nacos, consul, apollo, zk, etcd3
    type: nacos # 指定配置中心為nacos
    nacos:
      server-addr: 127.0.0.1:8848  # nacos的ip端口
      group: DEFAULT_GROUP	# 對應(yīng)的組，默認(rèn)為DEFAULT_GROUP
      namespace: a090b021-160c-42fb-98de-b1f9a5619d97 # 對應(yīng)的命名空間，在nacos中配置
      username: nacos
      password: nacos
      data-id: seataServer.properties # nacos中存放seata的配置文件，后面會提該文件的使用方式，相當(dāng)于seata服務(wù)啟動的時(shí)候需要注冊到nacos，并使用nacos中的配置文件
  
  # 注冊中心與上述config同理
  registry:
    # support: nacos, eureka, redis, zk, consul, etcd3, sofa
    type: nacos
    nacos:
      application: seata-server
      server-addr: 127.0.0.1:8848
      namespace: a090b021-160c-42fb-98de-b1f9a5619d97
      group: DEFAULT_GROUP
      cluster: default
      username: nacos
      password: nacos

  security:
    secretKey: SeataSecretKey0c382ef121d778043159209298fd40bf3850a017
    tokenValidityInMilliseconds: 1800000
    ignore:
      urls: /,/**/*.css,/**/*.js,/**/*.html,/**/*.map,/**/*.svg,/**/*.png,/**/*.ico,/console-fe/public/**,/api/v1/auth/login

【注意】

• seata.config.type 與seata.registry.type 都要修改為nacos
• 修改config與registry中nacos的配置，其中namespace與group須提前在nacos中進(jìn)行配置

二. nacos配置

2.1 新建namespace

新建namespace命名空間，需與上述seata-server的application.yml中配置一致

2.2 新建seata的seataServer.properties配置文件

在上述namespace下新建application.yml中seata.config.nacos.data-id提到的配置文件：seataServer.properties

seataServer.properties 已刪除無用配置

#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
# 此處的mygroup名字可以自定義，只修改這個(gè)值即可
service.vgroupMapping.mygroup=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.
# 默認(rèn)為file，一定要改為db，我們自己的服務(wù)啟動會連接不到seata
store.mode=db
store.lock.mode=db
store.session.mode=db
#Used for password encryption

#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mysql的配置
store.db.datasource=druid
store.db.dbType=mysql
store.db.driverClassName=com.mysql.cj.jdbc.Driver
# 指定seata的數(shù)據(jù)庫，下面會提
store.db.url=jdbc:mysql://127.0.0.1:3306/seata?useUnicode=true&rewriteBatchedStatements=true
store.db.user=root
store.db.password=banmajio
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


#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

【注意】

1. 修改service.vgroupMapping.mygroup=default該值，其中mygroup可以自定義，后面我們自己的服務(wù)啟動時(shí)，配置文件中需要指定該group。
2. 修改store.mode store.lock.mode store.session.mode這三個(gè)值為db，才能讓seata連接到下面的數(shù)據(jù)庫中。
3. 修改store.db配置項(xiàng)下的配置，連接到自己的數(shù)據(jù)庫。
4. 該文件參數(shù)的具體作用參考官網(wǎng)：seata配置文件詳解（官網(wǎng)）
5. 該配置源文件存放在seata目錄下：seata/script/config-center/config.txt

三. MySQL配置

3.1 新建seata數(shù)據(jù)庫

數(shù)據(jù)庫的名稱與上述3.2seata配置文件中的store.db.url保持一致。

3.2 新建seata配置表

在上述庫中添加seata的配置表，sql文件存放在：seata/script/server/db/mysql.sql中

-- -------------------------------- The script used when storeMode is 'db' --------------------------------
-- the table to store GlobalSession data
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` (`xid`)
) 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);

3.3 業(yè)務(wù)數(shù)據(jù)庫添加undo_log表

-- 注意此處0.3.0+ 增加唯一索引 ux_undo_log
CREATE TABLE `undo_log` (
  `id` bigint(20) NOT NULL AUTO_INCREMENT,
  `branch_id` bigint(20) NOT NULL,
  `xid` varchar(100) NOT NULL,
  `context` varchar(128) NOT NULL,
  `rollback_info` longblob NOT NULL,
  `log_status` int(11) NOT NULL,
  `log_created` datetime NOT NULL,
  `log_modified` datetime NOT NULL,
  `ext` varchar(100) DEFAULT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `ux_undo_log` (`xid`,`branch_id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

4. seata-server啟動

seata 的 /bin 目錄下 ：/seata/bin 執(zhí)行下面的腳本

sh seata-server.sh -p 8091 -h 127.0.0.1

參數(shù)解釋：
-h： 將地址暴露給注冊中心，其他服務(wù)可以訪問seata服務(wù)器
-p：要偵聽的端口

啟動成功后，即可訪問 http://127.0.0.1:7091/#/login 改地址進(jìn)入seata的webui，用戶名與密碼默認(rèn)為seata，可在上面的1.2章節(jié)中中提到的application.yml配置項(xiàng)：console.user中修改

并且查看nacos中的服務(wù)注冊中心是否可以看到seata-server

至此，seater-server的配置與部署完成

五. SpringCloud整合Seata

5.1 pom.xml依賴引入

		<!-- 注意一定要引入對版本，要引入spring-cloud版本seata，而不是springboot版本的seata-->
	    <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-seata</artifactId>
            <!-- 排除掉springcloud默認(rèn)的seata版本，以免版本不一致出現(xiàn)問題-->
            <exclusions>
                <exclusion>
                    <groupId>io.seata</groupId>
                    <artifactId>seata-spring-boot-starter</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>io.seata</groupId>
                    <artifactId>seata-all</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <!-- 上面排除掉了springcloud默認(rèn)色seata版本，此處引入和seata-server版本對應(yīng)的seata包-->
        <dependency>
            <groupId>io.seata</groupId>
            <artifactId>seata-spring-boot-starter</artifactId>
            <version>1.6.1</version>
        </dependency>

5.2 bootstrap.yml

配置文件中加入以下配置

seata:
  tx-service-group: mygroup # 事務(wù)分組名稱，要和服務(wù)端對應(yīng)
  service:
    vgroup-mapping:
      mygroup: default # key是事務(wù)分組名稱 value要和服務(wù)端的機(jī)房名稱保持一致

其中tx-service-group配置項(xiàng)要與 上述2.3章節(jié)中提到的service.vgroupMapping.mygroup=default中的group保持一致，
seata.service.vgroup-mapping.mygroup 中的mygroup同理。

5.3 啟動服務(wù)

我們自己的服務(wù)要與seata-server服務(wù)在同一個(gè)namespace下
查看服務(wù)是否啟動成功
查看nacos的對應(yīng)的namespace中服務(wù)是否注冊成功

5.4 使用

在外層接口上增加@GlobalTransactional注解

    @GetMapping("/remoteTest")
    @GlobalTransactional
    public String remoteTest(){
        orderService.remoteTest();
        return "order success";
    }

只需要在最外層方法上添加注解即可，子事務(wù)方法上不需要添加@GlobalTransactional與@Transactional注解。文章來源地址http://www.zghlxwxcb.cn/news/detail-435148.html

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