初始Seata（三）

目录

1.背景

2.库存服务

1）pom.xml

2）配置文件

1.背景

书接上回初识Seata（二），继续库存服务模块的代码。

2.库存服务

目录结构

java

com.seata.storage

configcontrollerdaoentityserviceresources

mapper（package）application.ymlfile.confregistry.conf

1）pom.xml

这部分与上回中的

@RequestController
@RequestMapping("/storage/")
public class StorageController {
    @Resource
    private StorageService storageService;
 
    @GetMapping("decrease")
    public String decrease(@RequestParam("productId") Long productId, @RequestParam("count") Integer count){
        storageService.decrease(productId, count);
        return "库存扣减成功"
    }
}

服务是一样的，不再赘述。

2）配置文件

*** file.conf 和 registry.conf与上文一致，在此不再赘述

*** application.yml

server:
  port: 8803
spring:
  application:
    name: seata-storage
  cloud:
    alibaba:
     seata:
       # 这里要与file.conf中的值保持一致
       tx-service-group: my_test_tx_group
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    username: root
    password: 123456
    url: jdbc:mysql://locahost:3306/seata_storage?serverTimezone=GMT%2B8&characterEncoding=utf8
 
eureka:
  client:
    service-url:
      dafaultZone: http://localhost:8801/eureka/
  instance:
    hostname: localhost
    prefer-ip-address: true
logging:
  level:
    io:
      seata: info
mybatis:
  mapperLocations: classpath:mapper/*.xml

*** 启动类

@EnableDiscoveryClient
@EnableEurekaClients
public class StorageAppMain8803
{
    public static void main(String[] args){
        SpringApplication.run(StorageAppMain8803.class, args);
    }
}

*** config

**** DataSourceProxyConfig.java

这个文件与前文相同，不再赘述

**** MyBatisConfig.java

@Configuration
@MapperScan({"com.seata.storage.dao"})
public class MyBatisConfig{
}

*** entity

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Storage {
    private Long id;
    private Long productId;
    private Integer total;
    private Integer used;
    private Integer residue;
}

*** controller

@RequestMapping("/storage/")
public class StorageController {
    @Resource
    private StorageService storageService;
 
    @GetMapping("decrease")
    public String decrease(@RequestParam("productId") Long productId, @RequestParam("count") Integer count){
        storageService.decrease(productId, count);
        return "库存扣减成功"
    }
}

*** service & serviceImpl

**** service

public interface StorageService {
    void decrease(Long productId, Integer count);
}

@Service
public class StorageServiceImpl implements StorageService {
    @Resource
    private StorageDao storageDao;
 
    public void decrease(Long productId, Integer count) {
        storageDao.decrease(productId, count);
    }
}

*** dao

@Mapper
public interface StorageDao {
    void decrease(@Param("productId") Long productId, @Param("count") Integer count);
}

*** resources

**** mapper.StorageMapper.xml

 

    
        
        
        
        
        
    
    
        update storage
        set used = used + #{count}, residue = residue - #{count}
        where product_id=#{productId}
    

未完待续~~