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seata-1.4.0如何在springcloud中使用？很多新手对此不是很清楚，为了帮助大家解决这个难题，下面小编将为大家详细讲解，有这方面需求的人可以来学习下，希望你能有所收获。
1、简介
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。
详见官方文档：https://seata.io/zh-cn/docs/overview/what-is-seata.html
网上的多是0.9.0版本的安装方式，这里记录安装seata-1.4.0版本的方式，在win10环境下安装，centos7与此相同。
需要下载seata-1.4.0.zip 和 seata-server-1.4.0.zip两个安装包
下载地址：https://github.com/seata/seata/releases
解压压缩包，修改conf内的配置文件
我使用的nacos作为配置中心和注册中心，使用将配置文件改为nacos
registry {
# file 、nacos 、eureka、redis、zk、consul、etcd3、sofa
type = "nacos"
loadBalance = "RandomLoadBalance"
loadBalanceVirtualNodes = 10
nacos {
application = "seata-server"
serverAddr = "127.0.0.1:8848"
group = "SEATA_GROUP"
namespace = ""
cluster = "default"
username = "nacos"
password = "nacos"
}
}
config {
# file、nacos 、apollo、zk、consul、etcd3
type = "nacos"
nacos {
serverAddr = "127.0.0.1:8848"
namespace = ""
group = "SEATA_GROUP"
username = "nacos"
password = "nacos"
}
}修改数据库地址，注意mysql5/mysql8驱动不同
store {
## store mode: file、db、redis
mode = "db"
## database store property
db {
## the implement of javax.sql.DataSource, such as DruidDataSource(druid)/BasicDataSource(dbcp)/HikariDataSource(hikari) etc.
datasource = "druid"
## mysql/oracle/postgresql/h3/oceanbase etc.
dbType = "mysql"
driverClassName = "com.mysql.cj.jdbc.Driver"
url = "jdbc:mysql://127.0.0.1:3307/seata?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf8&useSSL=true"
user = "root"
password = "123456"
minConn = 5
maxConn = 100
globalTable = "global_table"
branchTable = "branch_table"
lockTable = "lock_table"
queryLimit = 100
maxWait = 5000
}
}创建数据库seata,并建立下面三张表（branch_table, global_table, lock_table），创建undo_log表放到业务库中 -- the table to store GlobalSession data 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`) ); -- the table to store seata xid data -- 0.7.0+ add context -- you must to init this sql for you business databese. the seata server not need it. -- 此脚本必须初始化在你当前的业务数据库中，用于AT 模式XID记录。与server端无关（注：业务数据库） -- 注意此处0.3.0+ 增加索引 ux_undo_log drop table `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;
seata-1.4\bin目录下：双击 seata-server.bat nacos中查看服务是否注册成功
配置
解压安装包，并修改配置
路径：script\config-center 修改service.vgroupMapping和数据库地址 service.vgroupMapping.system-server-group=default service.vgroupMapping.product-server-group=default store.mode=db store.db.datasource=druid store.db.dbType=mysql store.db.driverClassName=com.mysql.cj.jdbc.Driver store.db.url=jdbc:mysql://192.168.111.130:3307/seata?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf8&useSSL=true store.db.user=root store.db.password=123456 store.db.minConn=5 store.db.maxConn=30 store.db.globalTable=global_table store.db.branchTable=branch_table store.db.queryLimit=100 store.db.lockTable=lock_table store.db.maxWait=5000 注： service.vgroupMapping.system-server-group=default service.vgroupMapping.product-server-group=default #system-server-group、product-server-group 与项目模块中yml配置的seata.tx-service-group内容相同
将配置注入到nacos中
1、在seata-server-1.4.0\script\config-center\nacos目录下，右键 Git Bash Here
2、输入命令：
sh nacos-config.sh -h 127.0.0.1 -p 8848 -g SEATA_GROUP -u nacos -w nacos
返回成功
在nacos配置列表中找到config.txt配置的vgroupMapping，即说明注入成功
![在这里插入图片描述](https://img-blog.csdnimg.cn/20201214150808987.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zNzY5ODMzNg==,size_16,color_FFFFFF,t_70#pic_center
com.alibaba.cloud spring-cloud-starter-alibaba-seata io.seata seata-spring-boot-starter 注：seata-spring-boot-starter的版本与安装版本一致 io.seata seata-spring-boot-starter 1.4.0
seata: enabled: true application-id: product-server tx-service-group: product-server-group enable-auto-data-source-proxy: true config: type: nacos nacos: namespace: server-addr: 127.0.0.1:8848 group: SEATA_GROUP userName: "nacos" password: "nacos" registry: type: nacos nacos: application: seata-server server-addr: 127.0.0.1:8848 namespace: userName: "nacos" password: "nacos"
application启动类上添加： @EnableAutoDataSourceProxy service上添加： @GlobalTransactional(rollbackFor = Exception.class)
控制台输出：
调用方控制台打印
被调用方异常控制台打印：
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