基于SpringCloud微服务架构nacos整合分布式事务框架seata(原名fescar)

╰+哭是因爲堅強的太久メ 2023-05-30 09:19 4阅读 0赞

###### 1.拉去seata官方的seata-server ######

https://github.com/seata/seata/releases/download/v0.9.0/seata-server-0.9.0.tar.gz

###### 2.解压 seata-server-0.9.0.tar.gz ######

tar -zxvf seata-server-0.9.0.tar.gz

###### 3.进入seata/conf目录修改register.conf配置文件 ######

registry {
    	#基于naocs   serverAdd配置对应的nacos地址 namespace命名空间
    	#另外还可以基于file 、eureka、redis、zk、consul、etcd3、sofa等可以做相关配置，这里就不一一操作了
      type = "nacos"
      nacos {
        serverAddr = "192.168.1.19:8848"
        namespace = "public"
        cluster = "default"
      }
    }
    config {
      type = "nacos"
      nacos {
        serverAddr = "192.168.1.19:8848"
        namespace = "public"
        cluster = "default"
      }
    }

###### 4.修改nacos-config.txt ######

service.vgroup_mapping.vendor-system-fescar-service=default   #vendor-system-fescar-service配置事务组名，跟应用服务上配置一致，后面会提到
    service.vgroup_mapping.vendor-position-fescar-service=default

###### 5.进入bin目录,修改启动脚本seata-server.sh ,防止发生内存泄漏问题 ######

> \-XX:MaxDirectMemorySize=2048m

###### 6.在naocs服务页面添加,值默认default(或者执行nacos-conf.sh脚本) ######

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzI5NTA3OQ_size_16_color_FFFFFF_t_70]

###### 7.启动脚本文件，注意seata默认取的是服务器的内网ip,那么外部服务无法注册到seata-server上。那么就必须在启动参数指定外网ip “-h 47.125.114.58” ######

> sh seata-server.sh -h 47.125.114.58

服务启动成功  
![在这里插入图片描述][20191109105352137.png]

###### 8.可以在nacos服务页面看到，seata服务注册成功 ######

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzI5NTA3OQ_size_16_color_FFFFFF_t_70 1]

###### 9.项目vendor-system配置 添加依赖 ######

<dependency>
    	<groupId>com.alibaba.cloud</groupId>
    	<artifactId>spring-cloud-starter-alibaba-seata</artifactId>
    </dependency>

###### 10.配置事务组 ######

spring:
      cloud:
        alibaba:
          seata:
            tx-service-group: vendor-system-fescar-servic

###### 11.配置代理数据源, ######

@Configuration
    @Import(DataSourcesProperties.class)
    public class DataSourceProxyAutoConfiguration {
    
        private DataSourcesProperties dataSourcesProperties;
    
        public DataSourceProxyAutoConfiguration(DataSourcesProperties dataSourcesProperties) {
            this.dataSourcesProperties = dataSourcesProperties;
        }
    
        /**
         * create proxy datasource
         * @return
         */
        @Primary
        @Bean(name = "dataSource")
        public DataSource getDatasource(){
            HikariDataSource build = DataSourceBuilder.create().url(dataSourcesProperties.getUrl())
                    .password(dataSourcesProperties.getPassword())
                    .username(dataSourcesProperties.getUsername())
                    .type(dataSourcesProperties.getType())
                    .driverClassName(dataSourcesProperties.getDriverClassName()).build();
            return new DataSourceProxy(build);
        }
    
    }

###### 12.配置fegin远程调用时xid的传输 ######

public class FescarRequestInterceptor implements RequestInterceptor {
    
        private static final String FESCAR_HEADER_NAME = "Fescar-Xid";
    
        @Override
        public void apply(RequestTemplate requestTemplate) {
            String xid = RootContext.getXID();
            if(StringUtils.isNoneBlank(xid)){
                requestTemplate.header(FESCAR_HEADER_NAME,xid);
            }
        }
    }

###### 13.复制上面的registry.conf文件到应用的resources目录，并且将seata\\conf中的db\_uodo\_log.sql中的表初始化到每个应用的数据库中，做回滚的日志表 ######

###### 14.测试在需要配置事务的方法上加@GlobalTransactional注解就可以了 ######

###### 15.启动应用，控制台 ######

![在这里插入图片描述][20191109105950609.png]

###### 16.seata-server服务端控制台RM注册成功 ######

![在这里插入图片描述][20191109105813595.png]

> 记住：牛逼的技术虽然不是你的，但是你会了，就是你的

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[20191109105352137.png]: https://img-blog.csdnimg.cn/20191109105352137.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzI5NTA3OQ_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20191109105254678.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzI5NTA3OQ==,size_16,color_FFFFFF,t_70
[20191109105950609.png]: https://img-blog.csdnimg.cn/20191109105950609.png
[20191109105813595.png]: https://img-blog.csdnimg.cn/20191109105813595.png