SpringCloud Alibaba Seata處理分佈式事務

一、分佈式事務問題

1.1 分佈式前

單機單庫沒這個問題

從1：1 -> 1:N -> N: N

1.2 分佈式之後

 一句話，一次業務操作需要跨多個數據源或需要跨多個系統進行遠程調用，就會產生分佈式事務問題。

二、Seata簡介

2.1 是什麼

Seata是一款開源的分佈式事務解決方案，致力於在微服務架構下提供高性能和簡單易用的分佈式事務服務。

2.1.1 官網地址

http://seata.io/zh-cn/

2.2 能幹嘛

2.2.1 一個典型的分佈式事務過程

分佈式事務處理過程的-ID+三組件模型

• Transaction ID XID 全局唯一的事務ID

3組件概念

• Transaction Coordinator(TC)：事務協調器，維護全局事務的運行狀態，負責協調並驅動全局事務的提交或回滾。
• Transaction Manager(TM): 控制全局事務的邊界，負責開啓一個全局事務，並最終發起全局提交或全局回滾的決議。
• Resource Manager(RM): 控制分支事務，負責分支註冊，狀態彙報，並接收事務協調器的指令，驅動分支(本地)事務的提交和回滾。

2.2.2 處理過程

2.3 去哪下

發佈說明:https://github.com/seata/seata/releases

2.4 怎麼玩

本地@Transactional

全局@GlobalTransactinal

2.4.1 Seata的分佈式交易解決方案

三、Seata-Server安裝

3.1 官網地址

http://seata.io/zh-cn/

3.2 下載版本

seata-server-0.9.0.zip

3.3 seata-server-0.9.0.zip解壓到指定目錄並修改conf目錄下的file.conf配置文件

先備份原始file.conf文件

主要修改：自定義事務組名稱+事務日誌存儲模式爲db+數據庫連接信息

file.conf

service模塊: 

vgroup_mapping.my_test_tx_group = "fsp_tx_group"

store模塊: 

mode = "db"
  url = "jdbc:mysql://localhost:3306/seata"
  user = "root"
  password = "root"

3.4 mysql5.7數據庫新建庫seata

3.5 在seata庫裏建表

建表db_store.sql在\seata-server-0.9.0\seata\conf目錄裏面 db_store.sql

-- the table to store GlobalSession data
drop table if exists `global_table`;
create table `global_table` (
  `xid` varchar(128)  not null,
  `transaction_id` bigint,
  `status` tinyint not null,
  `application_id` varchar(32),
  `transaction_service_group` varchar(32),
  `transaction_name` varchar(128),
  `timeout` int,
  `begin_time` bigint,
  `application_data` varchar(2000),
  `gmt_create` datetime,
  `gmt_modified` datetime,
  primary key (`xid`),
  key `idx_gmt_modified_status` (`gmt_modified`, `status`),
  key `idx_transaction_id` (`transaction_id`)
);

-- the table to store BranchSession data
drop table if exists `branch_table`;
create table `branch_table` (
  `branch_id` bigint not null,
  `xid` varchar(128) not null,
  `transaction_id` bigint ,
  `resource_group_id` varchar(32),
  `resource_id` varchar(256) ,
  `lock_key` varchar(128) ,
  `branch_type` varchar(8) ,
  `status` tinyint,
  `client_id` varchar(64),
  `application_data` varchar(2000),
  `gmt_create` datetime,
  `gmt_modified` datetime,
  primary key (`branch_id`),
  key `idx_xid` (`xid`)
);

-- the table to store lock data
drop table if exists `lock_table`;
create table `lock_table` (
  `row_key` varchar(128) not null,
  `xid` varchar(96),
  `transaction_id` long ,
  `branch_id` long,
  `resource_id` varchar(256) ,
  `table_name` varchar(32) ,
  `pk` varchar(36) ,
  `gmt_create` datetime ,
  `gmt_modified` datetime,
  primary key(`row_key`)
);

3.6 修改seata-server-0.9.0\seata\conf目錄下的registry.conf配置文件

目的是：指明註冊中心爲nacos，及修改nacos連接信息

3.7 先啓動Nacos端口號8848

http://localhost:8848/nacos

3.8 再啓動seata-server

安裝成功

四、訂單/庫存/賬戶業務數據庫準備

以下演示都需要先啓動Nacos後啓動Seata，保證兩個都OK

Seata沒啓動報錯no available server to connect

4.1 分佈式事務業務說明

4.1.1 業務說明

下訂單-->扣庫存-->減賬戶（餘額）

4.2 創建業務數據庫

• seata_order：存儲訂單的數據庫
• seata_storage：存儲庫存的數據庫
• seata_account：存儲賬戶信息的數據庫

4.2.1 建庫SQL

CREATE DATABASE seata_order；
CREATE DATABASE seata_storage；
CREATE DATABASE seata_account；

4.3 安裝上述3庫分別建對應業務表

4.3.1 seata_order庫下建t_order表

CREATE TABLE t_order(
    id BIGINT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
    user_id BIGINT(11) DEFAULT NULL COMMENT '用戶id',
    product_id BIGINT(11) DEFAULT NULL COMMENT '產品id',
    count INT(11) DEFAULT NULL COMMENT '數量',
    money DECIMAL(11,0) DEFAULT NULL COMMENT '金額',
    status INT(1) DEFAULT NULL COMMENT '訂單狀態：0：創建中; 1：已完結'
) ENGINE=INNODB AUTO_INCREMENT=7 DEFAULT CHARSET=utf8;
 
SELECT * FROM t_order;

4.3.2 seata_storage庫下建t_storage表

CREATE TABLE t_storage(
    id BIGINT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
    product_id BIGINT(11) DEFAULT NULL COMMENT '產品id',
    total INT(11) DEFAULT NULL COMMENT '總庫存',
    used INT(11) DEFAULT NULL COMMENT '已用庫存',
    residue INT(11) DEFAULT NULL COMMENT '剩餘庫存'
) ENGINE=INNODB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;
 
INSERT INTO seata_storage.t_storage(id,product_id,total,used,residue)
VALUES('1','1','100','0','100');
 
 
SELECT * FROM t_storage;

4.3.3 seata_account庫下建t_account表

CREATE TABLE t_account(
    id BIGINT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY COMMENT 'id',
    user_id BIGINT(11) DEFAULT NULL COMMENT '用戶id',
    total DECIMAL(10,0) DEFAULT NULL COMMENT '總額度',
    used DECIMAL(10,0) DEFAULT NULL COMMENT '已用餘額',
    residue DECIMAL(10,0) DEFAULT '0' COMMENT '剩餘可用額度'
) ENGINE=INNODB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;
 
INSERT INTO seata_account.t_account(id,user_id,total,used,residue) VALUES('1','1','1000','0','1000');
 
 
SELECT * FROM t_account;

4.4 按照上述3庫分別建對應的回滾日誌表

4.4.1 訂單-庫存-賬戶3個庫下都需要建各自的回滾日誌表

-- the table to store seata xid data
-- 0.7.0+ add context
-- you must to init this sql for you business databese. the seata server not need it.
-- 此腳本必須初始化在你當前的業務數據庫中，用於AT 模式XID記錄。與server端無關（注：業務數據庫）
-- 注意此處0.3.0+ 增加唯一索引 ux_undo_log
drop table `undo_log`;
CREATE TABLE `undo_log` (
  `id` bigint(20) NOT NULL AUTO_INCREMENT,
  `branch_id` bigint(20) NOT NULL,
  `xid` varchar(100) NOT NULL,
  `context` varchar(128) NOT NULL,
  `rollback_info` longblob NOT NULL,
  `log_status` int(11) NOT NULL,
  `log_created` datetime NOT NULL,
  `log_modified` datetime NOT NULL,
  `ext` varchar(100) DEFAULT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `ux_undo_log` (`xid`,`branch_id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

4.4.2 最終效果

五、訂單/庫存/賬戶業務微服務準備

5.1 業務需求

下訂單->減庫存->扣餘額->改訂單狀態

5.2 新建訂單Order-Module

5.2.1 建Module

seata-order-service2001

 

5.2.2 POM

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>cloud2020</artifactId>
        <groupId>com.atguigu.springcloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>seata-order-service2001</artifactId>

    <dependencies>
        <!--nacos-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>
        <!--seata-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-seata</artifactId>
            <exclusions>
                <exclusion>
                    <artifactId>seata-all</artifactId>
                    <groupId>io.seata</groupId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>io.seata</groupId>
            <artifactId>seata-all</artifactId>
            <version>0.9.0</version>
        </dependency>
        <!--feign-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>
        <!--web-actuator-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <!--mysql-druid-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.37</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.10</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.0.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
    </dependencies>
</project>

5.2.3 YML

server:
  port: 2001

spring:
  application:
    name: seata-order-service
  cloud:
    alibaba:
      seata:
        #自定義事務組名稱需要與seata-server中的對應
        tx-service-group: fsp_tx_group
    nacos:
      discovery:
        server-addr: localhost:8848
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql://localhost:3306/seata_order
    username: root
    password: root

feign:
  hystrix:
    enabled: false

logging:
  level:
    io:
      seata: info

mybatis:
  mapperLocations: classpath:mapper/*.xml

5.2.4  file.conf

transport {
  # tcp udt unix-domain-socket
  type = "TCP"
  #NIO NATIVE
  server = "NIO"
  #enable heartbeat
  heartbeat = true
  #thread factory for netty
  thread-factory {
    boss-thread-prefix = "NettyBoss"
    worker-thread-prefix = "NettyServerNIOWorker"
    server-executor-thread-prefix = "NettyServerBizHandler"
    share-boss-worker = false
    client-selector-thread-prefix = "NettyClientSelector"
    client-selector-thread-size = 1
    client-worker-thread-prefix = "NettyClientWorkerThread"
    # netty boss thread size,will not be used for UDT
    boss-thread-size = 1
    #auto default pin or 8
    worker-thread-size = 8
  }
  shutdown {
    # when destroy server, wait seconds
    wait = 3
  }
  serialization = "seata"
  compressor = "none"
}
 
service {
 
  vgroup_mapping.fsp_tx_group = "default" 
 
  default.grouplist = "127.0.0.1:8091"
  enableDegrade = false
  disable = false
  max.commit.retry.timeout = "-1"
  max.rollback.retry.timeout = "-1"
  disableGlobalTransaction = false
}
 
 
client {
  async.commit.buffer.limit = 10000
  lock {
    retry.internal = 10
    retry.times = 30
  }
  report.retry.count = 5
  tm.commit.retry.count = 1
  tm.rollback.retry.count = 1
}
 
## transaction log store
store {
  ## store mode: file、db
  mode = "db"
 
  ## file store
  file {
    dir = "sessionStore"
 
    # branch session size , if exceeded first try compress lockkey, still exceeded throws exceptions
    max-branch-session-size = 16384
    # globe session size , if exceeded throws exceptions
    max-global-session-size = 512
    # file buffer size , if exceeded allocate new buffer
    file-write-buffer-cache-size = 16384
    # when recover batch read size
    session.reload.read_size = 100
    # async, sync
    flush-disk-mode = async
  }
 
  ## database store
  db {
    ## the implement of javax.sql.DataSource, such as DruidDataSource(druid)/BasicDataSource(dbcp) etc.
    datasource = "dbcp"
    ## mysql/oracle/h2/oceanbase etc.
    db-type = "mysql"
    driver-class-name = "com.mysql.jdbc.Driver"
    url = "jdbc:mysql://local:3306/seata"
    user = "root"
    password = "root"
    min-conn = 1
    max-conn = 3
    global.table = "global_table"
    branch.table = "branch_table"
    lock-table = "lock_table"
    query-limit = 100
  }
}
lock {
  ## the lock store mode: local、remote
  mode = "remote"
 
  local {
    ## store locks in user's database
  }
 
  remote {
    ## store locks in the seata's server
  }
}
recovery {
  #schedule committing retry period in milliseconds
  committing-retry-period = 1000
  #schedule asyn committing retry period in milliseconds
  asyn-committing-retry-period = 1000
  #schedule rollbacking retry period in milliseconds
  rollbacking-retry-period = 1000
  #schedule timeout retry period in milliseconds
  timeout-retry-period = 1000
}
 
transaction {
  undo.data.validation = true
  undo.log.serialization = "jackson"
  undo.log.save.days = 7
  #schedule delete expired undo_log in milliseconds
  undo.log.delete.period = 86400000
  undo.log.table = "undo_log"
}
 
## metrics settings
metrics {
  enabled = false
  registry-type = "compact"
  # multi exporters use comma divided
  exporter-list = "prometheus"
  exporter-prometheus-port = 9898
}
 
support {
  ## spring
  spring {
    # auto proxy the DataSource bean
    datasource.autoproxy = false
  }
}
 
 

5.2.5 registry.conf

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

  nacos {
    serverAddr = "localhost:8848"
    namespace = ""
    cluster = "default"
  }
  eureka {
    serviceUrl = "http://localhost:8761/eureka"
    application = "default"
    weight = "1"
  }
  redis {
    serverAddr = "localhost:6379"
    db = "0"
  }
  zk {
    cluster = "default"
    serverAddr = "127.0.0.1:2181"
    session.timeout = 6000
    connect.timeout = 2000
  }
  consul {
    cluster = "default"
    serverAddr = "127.0.0.1:8500"
  }
  etcd3 {
    cluster = "default"
    serverAddr = "http://localhost:2379"
  }
  sofa {
    serverAddr = "127.0.0.1:9603"
    application = "default"
    region = "DEFAULT_ZONE"
    datacenter = "DefaultDataCenter"
    cluster = "default"
    group = "SEATA_GROUP"
    addressWaitTime = "3000"
  }
  file {
    name = "file.conf"
  }
}

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

  nacos {
    serverAddr = "localhost"
    namespace = ""
  }
  consul {
    serverAddr = "127.0.0.1:8500"
  }
  apollo {
    app.id = "seata-server"
    apollo.meta = "http://192.168.1.204:8801"
  }
  zk {
    serverAddr = "127.0.0.1:2181"
    session.timeout = 6000
    connect.timeout = 2000
  }
  etcd3 {
    serverAddr = "http://localhost:2379"
  }
  file {
    name = "file.conf"
  }
}

5.2.6 domain

package com.atguigu.springcloud.alibaba.domain;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

/**
 * @author by Jak
 * @date 2020/7/3
 */
@Data
@AllArgsConstructor
@NoArgsConstructor
public class CommonResult<T> {
    private Integer code;
    private String message;
    private T data;

    public CommonResult(Integer code, String message) {
        this(code, message, null);
    }
}

package com.atguigu.springcloud.alibaba.domain;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.math.BigDecimal;


@Data
@AllArgsConstructor
@NoArgsConstructor
public class Order
{
    private Long id;

    private Long userId;

    private Long productId;

    private Integer count;

    private BigDecimal money;

    private Integer status; //訂單狀態：0：創建中；1：已完結
}

5.2.7 Dao接口及實現

package com.atguigu.springcloud.alibaba.dao;

import com.atguigu.springcloud.alibaba.domain.Order;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;

/**
 * @author by Jak
 * @date 2020/7/3
 */
@Mapper
public interface OrderDao {

    //1 新建訂單
    void create(Order order);

    //2 修改訂單狀態，從零改爲1
    void update(@Param("userId") Long userId, @Param("status") Integer status);

}

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >

<mapper namespace="com.atguigu.springcloud.alibaba.dao.OrderDao">

    <resultMap id="BaseResultMap" type="com.atguigu.springcloud.alibaba.domain.Order">
        <id column="id" property="id" jdbcType="BIGINT"/>
        <result column="user_id" property="userId" jdbcType="BIGINT"/>
        <result column="product_id" property="productId" jdbcType="BIGINT"/>
        <result column="count" property="count" jdbcType="INTEGER"/>
        <result column="money" property="money" jdbcType="DECIMAL"/>
        <result column="status" property="status" jdbcType="INTEGER"/>
    </resultMap>

    <insert id="create">
        insert into t_order (id,user_id,product_id,count,money,status)
        values (null,#{userId},#{productId},#{count},#{money},0);
    </insert>


    <update id="update">
        update t_order set status = 1
        where user_id=#{userId} and status = #{status};
    </update>

</mapper>

5.2.8 Service接口及實現

package com.atguigu.springcloud.alibaba.service;

import com.atguigu.springcloud.alibaba.domain.Order;

/**
 * @author by Jak
 * @date 2020/7/3
 */
public interface OrderService {
    void create(Order order);
}
 
 

package com.atguigu.springcloud.alibaba.service.impl;

import com.atguigu.springcloud.alibaba.dao.OrderDao;
import com.atguigu.springcloud.alibaba.domain.Order;
import com.atguigu.springcloud.alibaba.service.AccountService;
import com.atguigu.springcloud.alibaba.service.OrderService;
import com.atguigu.springcloud.alibaba.service.StorageService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;

/**
 * @author by Jak
 * @date 2020/7/3
 */

@Service
@Slf4j
public class OrderServiceImpl implements OrderService {

    @Resource
    private OrderDao orderDao;

    @Resource
    private StorageService storageService;

    @Resource
    private AccountService accountService;


    /**
     * 創建訂單->調用庫存服務扣減庫存->調用賬戶服務扣減賬戶餘額->修改訂單狀態
     * 簡單說：
     * 下訂單->減庫存->減餘額->該狀態
     * @param order
     */
    @Override
    public void create(Order order) {
        //1 新建訂單
        log.info("----->開始新建訂單");
        orderDao.create(order);

        //2 扣減庫存
        log.info("----->訂單微服務開始調用庫存，做扣減Count");
        storageService.decrease(order.getProductId(), order.getCount());
        log.info("----->訂單微服務開始調用庫存，做扣減end");

        //3 扣減賬戶
        log.info("----->訂單微服務開始調用賬戶，做扣減Money");
        accountService.decrease(order.getUserId(), order.getMoney());
        log.info("----->訂單微服務開始調用賬戶，做扣減end");

        //4 修改訂單狀態，從零到1代表已經完成
        log.info("----->修改訂單狀態開始");
        orderDao.update(order.getUserId(), 0);
        log.info("----->修改訂單狀態結束");

        log.info("----->下訂單結束了");

    }
}

package com.atguigu.springcloud.alibaba.service;

import com.atguigu.springcloud.alibaba.domain.CommonResult;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;

/**
 * @author by Jak
 * @date 2020/7/3
 */

@FeignClient(value = "seata-storage-service")
public interface StorageService {

    @PostMapping(value = "/storage/decrease")
    CommonResult decrease(@RequestParam("productId") Long productId, @RequestParam("count") Integer count);

}
 
 

package com.atguigu.springcloud.alibaba.service;

import com.atguigu.springcloud.alibaba.domain.CommonResult;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;

import java.math.BigDecimal;

/**
 * @author by Jak
 * @date 2020/7/3
 */
@FeignClient(value = "seata-account-service")
public interface AccountService {

    @PostMapping(value = "/account/decrease")
    CommonResult decrease(@RequestParam("userId") Long userId, @RequestParam("money")BigDecimal money);
}
 
 

5.2.9 Controller

package com.atguigu.springcloud.alibaba.controller;

import com.atguigu.springcloud.alibaba.domain.CommonResult;
import com.atguigu.springcloud.alibaba.domain.Order;
import com.atguigu.springcloud.alibaba.service.OrderService;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;

/**
 * @author by Jak
 * @date 2020/7/4
 */
@RestController
public class OrderController {

    @Resource
    private OrderService orderService;

    @GetMapping("/order/create")
    public CommonResult create(Order order) {
        orderService.create(order);
        return new CommonResult(200, "訂單創建成功");
    }
}

5.2.10 Config配置

package com.atguigu.springcloud.alibaba.config;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Configuration;


@Configuration
@MapperScan({"com.atguigu.springcloud.alibaba.dao"})
public class MyBatisConfig {

}

package com.atguigu.springcloud.alibaba.config;

import com.alibaba.druid.pool.DruidDataSource;
import io.seata.rm.datasource.DataSourceProxy;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.transaction.SpringManagedTransactionFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import javax.sql.DataSource;


@Configuration
public class DataSourceProxyConfig {


    @Value("${mybatis.mapperLocations}")
    private String mapperLocations;


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


    @Bean
    public DataSourceProxy dataSourceProxy(DataSource dataSource) {
        return new DataSourceProxy(dataSource);
    }


    @Bean
    public SqlSessionFactory sqlSessionFactoryBean(DataSourceProxy dataSourceProxy) throws Exception {
        SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
        sqlSessionFactoryBean.setDataSource(dataSourceProxy);
        sqlSessionFactoryBean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources(mapperLocations));
        sqlSessionFactoryBean.setTransactionFactory(new SpringManagedTransactionFactory());
        return sqlSessionFactoryBean.getObject();
    }

}

5.2.11 主啓動

package com.atguigu.springcloud.alibaba;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.openfeign.EnableFeignClients;

@EnableDiscoveryClient
@EnableFeignClients
@SpringBootApplication(exclude = DataSourceAutoConfiguration.class)//取消數據源自動創建的配置
public class SeataOrderMainApp2001{

    public static void main(String[] args)
    {
        SpringApplication.run(SeataOrderMainApp2001.class, args);
    }
}

 

 

 

 

 

 

 

 

 

 

 

5.3 新建庫存Storage-Module

5.3.1 seata-order-service2002

5.3.2 POM

5.3.3 YML

5.4 新建賬戶Account-Module

5.4.1 seata-order-service2003

5.4.2 POM

5.4.3 YML