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spring cloud + mybatis + seate集成

一.客户端

1.引包

<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-alibaba-seata</artifactId>
    <version>2.1.1.RELEASE</version>
</dependency>
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2.编写配置类

@Configuration
public class DataSourceConfig {

    @Bean
    @ConfigurationProperties(prefix = "spring.datasource")
    public DataSource druidDataSource() {
        DruidDataSource druidDataSource = new DruidDataSource();
        return druidDataSource;
    }

    @Primary
    @Bean("dataSource")
    public DataSourceProxy dataSource(DataSource druidDataSource) {
        return new DataSourceProxy(druidDataSource);
    }

    @Bean
    public SqlSessionFactory sqlSessionFactory(DataSourceProxy dataSourceProxy) throws Exception {
        SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean();
        factoryBean.setDataSource(dataSourceProxy);
        factoryBean.setMapperLocations(new PathMatchingResourcePatternResolver()
            .getResources("classpath*:/mapper/*.xml"));
        return factoryBean.getObject();
    }
}
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3.修改启动类

@SpringBootApplication(exclude = DataSourceAutoConfiguration.class)
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4.在需要开启分布式事物的方法上添加注解

@GlobalTransactional
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二.服务端

1.下载seata-server

[seata-server]{ github.com/seata/seata… }

2.修改配置文件（本文以nacos为样例，store记录为mysql）

修改conf下的registry.conf

registry {
  # file 、nacos 、eureka、redis、zk、consul、etcd3、sofa
  type = "nacos"

  nacos {
    serverAddr = "localhost"
    namespace = "piblic"
    cluster = "default"
  }
}

config {
  # file、nacos 、apollo、zk、consul、etcd3
  type = "nacos"

  nacos {
    serverAddr = "localhost"
    #namespace为空，否则后面会报找不到store.db.driver-class-name找不到
    namespace = ""
  }
}
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修改registry下的type为nacos，配置nacos的serverAddr为你nacos服务的地址，不要带http和端口号。它会默认去连你的8858端口，如需修改端口，请修改nacos-config.sh文件中的端口

拷贝registry.conf到每个使用seata服务的resources下

修改conf下nacos-config.txt

store.mode=db
store.db.datasource=dbcp
store.db.db-type=mysql
store.db.driver-class-name=com.mysql.jdbc.Driver
store.db.url=jdbc:mysql://127.0.0.1:3306/seata?useUnicode=true
store.db.user=mysql
store.db.password=mysql
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修改store.mode为db，修改对应db配置文件为你自己的mysql。修改service.vgroup_mapping.my_test_tx_group=default属性 0.9.0.1版本后：my_test_tx_group修改为自己的服务名(spring.application.name)+"-seata-service-group" 0.9.0.1版本前：my_test_tx_group修改为自己的服务名(spring.application.name)+"-fescar-service-group" 可以spring-cloud-alibaba-seata项目下的GlobalTransactionAutoConfiguration累中看到