增加 seata 示例

examples/seata-example/account-service/src/main/java/com/chinaunicom/mall/ebtp/cloud/account/AccountSeataApplication.java

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+package com.chinaunicom.mall.ebtp.cloud.account;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
+import org.springframework.cloud.openfeign.EnableFeignClients;
+import org.springframework.context.annotation.Import;
+
+import com.chinaunicom.mall.ebtp.cloud.eureka.starter.EurekaStarterConfiguration;
+
+@SpringBootApplication(exclude = DataSourceAutoConfiguration.class)
+@EnableFeignClients
+@Import(EurekaStarterConfiguration.class)
+public class AccountSeataApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(AccountSeataApplication.class, args);
+	}
+
+}

examples/seata-example/account-service/src/main/java/com/chinaunicom/mall/ebtp/cloud/account/config/SeataDatasourceConfiguration.java

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+package com.chinaunicom.mall.ebtp.cloud.account.config;
+
+import javax.sql.DataSource;
+
+import org.apache.ibatis.session.SqlSessionFactory;
+import org.mybatis.spring.SqlSessionFactoryBean;
+import org.mybatis.spring.transaction.SpringManagedTransactionFactory;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Primary;
+
+import com.alibaba.druid.pool.DruidDataSource;
+
+import io.seata.rm.datasource.DataSourceProxy;
+
+@Configuration
+public class SeataDatasourceConfiguration {
+
+	@Bean
+	@ConfigurationProperties(prefix = "spring.datasource")
+	public DataSource druidDataSource() {
+		return new DruidDataSource();
+	}
+
+	@Primary
+	@Bean("dataSource")
+	public DataSourceProxy dataSource(DataSource druidDataSource) {
+		return new DataSourceProxy(druidDataSource);
+	}
+
+	@Bean
+	public SqlSessionFactory sqlSessionFactory(DataSourceProxy dataSourceProxy) throws Exception {
+		SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
+		sqlSessionFactoryBean.setDataSource(dataSourceProxy);
+		sqlSessionFactoryBean.setTransactionFactory(new SpringManagedTransactionFactory());
+
+		return sqlSessionFactoryBean.getObject();
+
+	}
+
+}

examples/seata-example/account-service/src/main/java/com/chinaunicom/mall/ebtp/cloud/account/controller/AccountController.java

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+package com.chinaunicom.mall.ebtp.cloud.account.controller;
+
+import java.math.BigDecimal;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.chinaunicom.mall.ebtp.cloud.account.service.AccountService;
+
+@RestController
+@RequestMapping("account")
+public class AccountController {
+
+	private @Autowired AccountService accountService;
+
+	@RequestMapping("decrease")
+	public String decrease(@RequestParam("userId") Long userId, @RequestParam("money") BigDecimal money) {
+		accountService.decrease(userId, money);
+		return "Account decrease success";
+	}
+
+}

examples/seata-example/account-service/src/main/java/com/chinaunicom/mall/ebtp/cloud/account/entity/Account.java

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+package com.chinaunicom.mall.ebtp.cloud.account.entity;
+
+import java.math.BigDecimal;
+
+import com.baomidou.mybatisplus.annotation.TableName;
+
+import lombok.Data;
+import lombok.experimental.Accessors;
+
+@Data
+@TableName
+@Accessors(chain = true)
+public class Account {
+
+	private Long id;
+	private Long userId;
+	private BigDecimal total;
+	private BigDecimal used;
+	private BigDecimal residue;
+
+}

examples/seata-example/account-service/src/main/java/com/chinaunicom/mall/ebtp/cloud/account/feign/OrderApi.java

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+package com.chinaunicom.mall.ebtp.cloud.account.feign;
+
+import java.math.BigDecimal;
+
+import org.springframework.cloud.openfeign.FeignClient;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+
+@FeignClient(value = "order-service")
+public interface OrderApi {
+
+	@RequestMapping("/order/update")
+	String update(@RequestParam("userId") Long userId, @RequestParam("money") BigDecimal money,
+			@RequestParam("status") Integer status);
+
+}

examples/seata-example/account-service/src/main/java/com/chinaunicom/mall/ebtp/cloud/account/mapper/AccountMapper.java

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+package com.chinaunicom.mall.ebtp.cloud.account.mapper;
+
+import java.math.BigDecimal;
+
+import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Param;
+import org.apache.ibatis.annotations.Update;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.chinaunicom.mall.ebtp.cloud.account.entity.Account;
+
+@Mapper
+public interface AccountMapper extends BaseMapper<Account> {
+
+	@Update("UPDATE account SET residue = residue - #{money}, used = used + #{money} WHERE user_id = #{userId}")
+	void decrease(@Param("userId") Long userId, @Param("money") BigDecimal money);
+
+}

examples/seata-example/account-service/src/main/java/com/chinaunicom/mall/ebtp/cloud/account/service/AccountService.java

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+package com.chinaunicom.mall.ebtp.cloud.account.service;
+
+import java.math.BigDecimal;
+
+public interface AccountService {
+
+	void decrease(Long userId, BigDecimal money);
+
+}

examples/seata-example/account-service/src/main/java/com/chinaunicom/mall/ebtp/cloud/account/service/impl/AccountServiceImpl.java

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+package com.chinaunicom.mall.ebtp.cloud.account.service.impl;
+
+import java.math.BigDecimal;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import com.chinaunicom.mall.ebtp.cloud.account.feign.OrderApi;
+import com.chinaunicom.mall.ebtp.cloud.account.mapper.AccountMapper;
+import com.chinaunicom.mall.ebtp.cloud.account.service.AccountService;
+
+import lombok.extern.slf4j.Slf4j;
+
+@Slf4j
+@Service
+public class AccountServiceImpl implements AccountService {
+
+	private @Autowired AccountMapper accountMapper;
+	private @Autowired OrderApi orderApi;
+
+	@Override
+	public void decrease(Long userId, BigDecimal money) {
+
+		log.info("--------> 扣减账户数据开始");
+
+		accountMapper.decrease(userId, money);
+
+		log.info("------->扣减账户结束account中");
+
+		log.info("修改订单状态开始");
+
+		String mes = orderApi.update(userId, money.multiply(new BigDecimal("0.09")), 0);
+
+		log.info("修改订单状态结束：{}", mes);
+
+	}
+
+}

examples/seata-example/account-service/src/main/reources/application-dev.yml

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+logging:
+  level:
+    com.chinaunicom.mall.ebtp.cloud: info
+      
+server:
+    port: 8672
+    
+spring:
+  cloud:
+    alibaba:
+      seata:
+        tx-service-group: test_tx_group
+  datasource:
+    driver-class-name: com.mysql.cj.jdbc.Driver
+    url: jdbc:mysql://125.32.114.204:13306/ebtp_mall_bid?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull&useSSL=false&allowPublicKeyRetrieval=true
+    username: mall3-ebtp-dev
+    password: mall3-ebtp-dev

examples/seata-example/account-service/src/main/reources/application.yml

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+spring:
+  profiles:
+    active: dev
+  application:
+    name: account-service
+