springcloud整合分布式事务seata

最新推荐文章于 2024-12-30 18:48:08 发布

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#spring cloud #分布式 #java

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该文章介绍了如何在SpringCloud项目中整合Seata1.4.2来实现分布式事务管理。通过添加必要的依赖和配置，包括Nacos作为注册中心和配置中心，以及Feign的使用，展示了Seata的全局事务配置和数据库存储设置。文章还提到了@GlobalTransactional注解的使用来标记需要进行事务管理的方法。

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springcloud整合分布式事务seata

springcloud + seata 1.4.2

项目依赖

<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-openfeign</artifactId>
    <exclusions>
        <exclusion>
            <groupId>io.github.openfeign</groupId>
            <artifactId>feign-core</artifactId>
        </exclusion>
    </exclusions>
</dependency>
<dependency>
    <groupId>io.github.openfeign</groupId>
    <artifactId>feign-core</artifactId>
    <version>10.7.4</version>
</dependency>
<dependency>
    <groupId>io.github.openfeign</groupId>
    <artifactId>feign-httpclient</artifactId>
    <version>10.7.4</version>
</dependency>
<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-alibaba-seata</artifactId>
    <version>2021.1</version>
    <exclusions>
        <exclusion>
            <groupId>io.seata</groupId>
            <artifactId>seata-spring-boot-starter</artifactId>
        </exclusion>
    </exclusions>
</dependency>
<dependency>
    <groupId>io.seata</groupId>
    <artifactId>seata-spring-boot-starter</artifactId>
    <version>1.4.2</version>
    <exclusions>
        <exclusion>
            <artifactId>druid</artifactId>
            <groupId>com.alibaba</groupId>
        </exclusion>
    </exclusions>
</dependency>

<dependency>
    <groupId>io.github.openfeign</groupId>
    <artifactId>feign-hystrix</artifactId>
</dependency>

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-openfeign-core</artifactId>
    <version>2.2.6.RELEASE</version>
</dependency>

<!--      seata序列化    -->
<dependency>
    <groupId>io.seata</groupId>
    <artifactId>seata-serializer-kryo</artifactId>
    <version>1.4.2</version>
</dependency>

项目配置

seata.enabled=true
# 关闭seata数据源代理
seata.enable-auto-data-source-proxy=false
seata.use-jdk-proxy=false
seata.tx-service-group=rp_tx_group
seata.service.vgroup-mapping.rp_tx_group=default
seata.service.disable-global-transaction=false
seata.service.enable-degrade=false

#config seata by nacos
seata.config.type=nacos
seata.config.nacos.serverAddr=127.0.0.1:8848
seata.config.nacos.group=SEATA_GROUP
seata.config.nacos.password=nacos
seata.config.nacos.username=nacos
seata.config.nacos.namespace=bdddefe8-6a4c-4aae-8fb7-b5a248493dfd

# get seata-server by nacos
seata.registry.type=nacos
seata.registry.nacos.application=seata-server
seata.registry.nacos.group=SEATA_GROUP
seata.registry.nacos.username=nacos
seata.registry.nacos.password=nacos
seata.registry.nacos.serverAddr=127.0.0.1:8848
seata.registry.nacos.namespace=bdddefe8-6a4c-4aae-8fb7-b5a248493dfd

seata相关配置

# registry 节点中配置信息主要用于seata服务注册在哪个注册中心上
# 例我这里选择的是nacos，则seata服务配置成狗后会注册到nacos上
registry {
  # file 、nacos 、eureka、redis、zk、consul、etcd3、sofa
  #更改seata服务注册类型，这里我们使用nacos
  type = "nacos"

  nacos {
    # 服务名称，可以随意定义
    application = "seata-server"
    # nacos服务ip
    serverAddr = "127.0.0.1:8848"
    # nacos分组，为空及默认DEFAULT_GROUP
    group = "SEATA_GROUP"
    # nacos命名空间，可为空
    namespace = "bdddefe8-6a4c-4aae-8fb7-b5a248493dfd"
    # nacos集群，保持默认就好
    cluster = "default"
    # nacos 账户
    username = "nacos"
    # nacos 密码
    password = "nacos"
  }
}
# config 节点中配置信息主要用于seata服务相关配置是从哪个注册中心中获取
config {
  # file、nacos 、apollo、zk、consul、etcd3
  # 更改seata服务配置信息类型为nacos
  type = "nacos"

  nacos {
    # 与registry节点下nacos配置信息保持议一致即可
    serverAddr = "127.0.0.1:8848"
    namespace = "bdddefe8-6a4c-4aae-8fb7-b5a248493dfd"
    group = "SEATA_GROUP"
    username = "nacos"
    password = "nacos"
  }
}

store {
  ## store mode: file、db、redis
  mode = "db"
  ## rsa decryption public key
  publicKey = ""
  ## database store property
  db {
    ## the implement of javax.sql.DataSource, such as DruidDataSource(druid)/BasicDataSource(dbcp)/HikariDataSource(hikari) etc.
    datasource = "druid"
    ## mysql/oracle/postgresql/h2/oceanbase etc.
    dbType = "mysql"
    driverClassName = "com.mysql.jdbc.Driver"
    ## if using mysql to store the data, recommend add rewriteBatchedStatements=true in jdbc connection param
    url = "jdbc:mysql://127.0.0.1:3306/seata?rewriteBatchedStatements=true"
    user = "mysql"
    password = "mysql"
    minConn = 5
    maxConn = 100
    globalTable = "global_table"
    branchTable = "branch_table"
    lockTable = "lock_table"
    queryLimit = 100
    maxWait = 5000
  }
}

点击查看seata安装部署及详细配置

使用示例

通常为实现类中，在特定方法上使用 @GlobalTransactional 注解

@Override
@GlobalTransactional
public void save(CouponCreateRequest request) {
	// todo
}

若正常执行完毕且事务提交成功可以在日志中查看到，commit status Commited

事物状态已提交