Spring Boot 集成Seata

Seata的集成方式有：

1. Seata-All

2. Seata-Spring-Boot-Starter

3. Spring-Cloud-Starter-Seata

本案例使用Seata-Spring-Boot-Starter演示：

第一步：下载Seata

第二步：为了更好看到效果，我们将Seata的数据存储改为db

将seata\script\server\db\mysql.sql语句在mysql中执行，创建相关表

然后修改seata配置文件，相关配置可以参考application.example.yml，此处修改mode为db并且配置db相关配置

启动seata：

第三步：Spring Boot集成Seata

1.pom.xml导包：

<!--seata-->
<dependency>
    <groupId>io.seata</groupId>
    <artifactId>seata-spring-boot-starter</artifactId>
    <version>1.4.2</version>
</dependency>
<dependency>
    <groupId>com.esotericsoftware</groupId>
    <artifactId>kryo</artifactId>
</dependency>
<dependency>
    <groupId>de.javakaffee</groupId>
    <artifactId>kryo-serializers</artifactId>
</dependency>
        

2.application.properties添加seata配置

#env
spring.profiles.active=dev

spring.application.name=coupon-service-provider
#dubbo.application.id=coupon-service
dubbo.application.name=coupon-service
dubbo.protocol.port=-1
dubbo.protocol.name=dubbo
#is simplified url
#dubbo.registry.simplified=true

#registry
#dubbo.registry.id=zk-registry
#dubbo.registry.address=zookeeper://192.168.1.105:2181?timeout=20000
#dubbo.config-center.address=zookeeper://192.168.1.105:2181?timeout=20000
#dubbo.metadata-report.address=zookeeper://192.168.1.105:2181?timeout=20000

#multi registries
#dubbo.registries.zk-registry.id=zk-registry
#dubbo.registries.zk-registry.address=zookeeper://192.168.1.105:2181?timeout=20000&blockUntilConnectedWait=30
dubbo.registries.nacos-registry.id=nacos-registry
dubbo.registries.nacos-registry.address=nacos://192.168.1.105:8848
#dubbo.registries.nacos-registry.address=nacos://192.168.1.105:8848?namespace=2e73933a-34d4-4fba-b21e-f08cd9b8adc9
dubbo.registry.use-as-config-center=false
dubbo.registry.use-as-metadata-center=false

#nacos config
nacos.config.server-addr=192.168.1.105:8848

#mybatis
mybatis.mapper-locations= classpath*:com/lee/demo/dubbo/demo/dao/*Mapper.xml
mybatis.type-aliases-package=com.lee.demo.dubbo.demo.entity

#datasource
spring.datasource.url=jdbc:mysql://localhost:3308/coupon-platform?useUnicode=true&characterEncoding=utf8&useOldAliasMetadataBehavior=true&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true&serverTimezone=UTC
spring.datasource.username=root
spring.datasource.password=Aa1225102411
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource

#========== seata config =============
seata.data-source-proxy-mode=AT
#tx group
seata.tx-service-group=demo-tx-default-group
seata.service.vgroup-mapping.demo-tx-default-group=default
#tx group cluster
seata.service.grouplist.default=192.168.1.105:8091
seata.client.undo.log-serialization=kryo

就两步完成Spring Boot集成Seata

测试：

1.首先在portal标明分布式事务

2.postman调用

打断点调试

异常触发前，看到数据插入成功，且undo_log有两条数据

断点继续往下走，触发异常，，已插入的数据被回滚，且undo_log被清空，分布式事务回滚正常。

至此，Spring Boot集成Seata演示完毕