前言

本文借鉴于:
这篇博文。 原本想集成到项目中, 但因为集成 springboot版本 2.2.2.RELEASE 和springcloud
<spring-cloud.version>Hoxton.RELEASE</spring-cloud.version>
版本失败,再加上还需要 安装Consul 去使用,所以放弃了。 随后自己又集成了一个 eureka 的版本 ,无需 安装Consul
的一个版本。

0、项目源码地址


1、项目结构图:

springboot io任务是什么 springboot lcn_spring


eureka-server: eureka 微服务注册中心。

txlcn-tm :LCN 管理端,用于管理服务事务。

test_a: 微服务 A

test_b: 微服务 B

2、测试服务事务流程:

启动 eureka-server 服务注册与发现。

springboot io任务是什么 springboot lcn_springboot io任务是什么_02

启动 txlcn-tm 事务管理。

springboot io任务是什么 springboot lcn_xml_03

最后启动 test_a 和 test_b 微服务

数据库原始状态:

test_a_tx:

springboot io任务是什么 springboot lcn_xml_04


test_b_tx:

springboot io任务是什么 springboot lcn_spring_05

开始调用test_a 的 controller 接口进行测试

调用 A 服务controller ,在impl实现层 调用 B 服务的接口保存数据,抛异常,然后再调用本服务保存数据。检测是否B服务是否有回滚。

A controller:

springboot io任务是什么 springboot lcn_springboot io任务是什么_06


A impl:

springboot io任务是什么 springboot lcn_spring_07

调用方法:

http://localhost:8080/tx/pay?money=100&user=xiaoming

已经进入我们预期的异常!

springboot io任务是什么 springboot lcn_spring_08


test_a :

springboot io任务是什么 springboot lcn_xml_09


test_b:

springboot io任务是什么 springboot lcn_xml_10


然后看数据库B表(值没有改变,说明事务已经回滚成功!):

test_b_tx

springboot io任务是什么 springboot lcn_spring_11

项目依赖

lcn-demo(父节点):pom.xml

父节点的包主要做版本控制

<!--<?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">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.txlcn.demo</groupId>
    <artifactId>lcn-demo</artifactId>
    <version>1.0.0</version>
    <packaging>pom</packaging>
    <name>lcn-demo</name>

    <modules>
        <module>test_a</module>
        <module>test_b</module>
        <module>txlcn-tm</module>
    </modules>

    <properties>
        <!-- project -setting -->
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>

        <codingapi.txlcn.version>5.0.2.RELEASE</codingapi.txlcn.version>
        <springcloud.version>Greenwich.RELEASE</springcloud.version>
        <lombok.version>1.18.0</lombok.version>
    </properties>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.2.RELEASE</version>
        <relativePath/>
    </parent>

    <dependencies>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>

            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${springcloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>${lombok.version}</version>
            </dependency>


            <dependency>
                <groupId>com.codingapi.txlcn</groupId>
                <artifactId>txlcn-tc</artifactId>
                <version>${codingapi.txlcn.version}</version>
            </dependency>

            <dependency>
                <groupId>com.codingapi.txlcn</groupId>
                <artifactId>txlcn-tm</artifactId>
                <version>${codingapi.txlcn.version}</version>
            </dependency>

            <dependency>
                <groupId>com.codingapi.txlcn</groupId>
                <artifactId>txlcn-txmsg-netty</artifactId>
                <version>${codingapi.txlcn.version}</version>
            </dependency>
        </dependencies>
    </dependencyManagement>

</project>

txlcn-tm(事务管理)关键配置:

启动类加上 事务注解

@EnableTransactionManagerServer

springboot io任务是什么 springboot lcn_xml_12

application.properties:

spring.application.name=tx-manager
server.port=7970

# JDBC 数据库配置
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/tx-manager?characterEncoding=UTF-8&serverTimezone=Asia/Shanghai
spring.datasource.username=root
spring.datasource.password=root

#eureka 地址
eureka.client.service-url.defaultZone=http://127.0.0.1:8761/eureka/
eureka.instance.prefer-ip-address=true

# 数据库方言
spring.jpa.database-platform=org.hibernate.dialect.MySQL5InnoDBDialect

# 第一次运行可以设置为: create, 为TM创建持久化数据库表
spring.jpa.hibernate.ddl-auto=update

# TM监听IP. 默认为 127.0.0.1
tx-lcn.manager.host=127.0.0.1

# TM监听Socket端口. 默认为 ${server.port} - 100
tx-lcn.manager.port=8070

# 心跳检测时间(ms). 默认为 300000
tx-lcn.manager.heart-time=300000

# 分布式事务执行总时间(ms). 默认为36000
tx-lcn.manager.dtx-time=8000

# 参数延迟删除时间单位ms  默认为dtx-time值
tx-lcn.message.netty.attr-delay-time=${tx-lcn.manager.dtx-time}

# 事务处理并发等级. 默认为机器逻辑核心数5倍
tx-lcn.manager.concurrent-level=160

# TM后台登陆密码,默认值为codingapi
tx-lcn.manager.admin-key=jack

# 分布式事务锁超时时间 默认为-1,当-1时会用tx-lcn.manager.dtx-time的时间
tx-lcn.manager.dtx-lock-time=${tx-lcn.manager.dtx-time}

# 雪花算法的sequence位长度,默认为12位.
tx-lcn.manager.seq-len=12

# 异常回调开关。开启时请制定ex-url
tx-lcn.manager.ex-url-enabled=false

# 事务异常通知(任何http协议地址。未指定协议时,为TM提供内置功能接口)。默认是邮件通知
tx-lcn.manager.ex-url=/provider/email-to/***@**.com



# 开启日志,默认为false
tx-lcn.logger.enabled=true
tx-lcn.logger.driver-class-name=${spring.datasource.driver-class-name}
tx-lcn.logger.jdbc-url=${spring.datasource.url}
tx-lcn.logger.username=${spring.datasource.username}
tx-lcn.logger.password=${spring.datasource.password}

# redis 的设置信息. 线上请用Redis Cluster
spring.redis.database=0
# Redis服务器地址
spring.redis.host=localhost
# Redis服务器连接端口
spring.redis.port=7000
# Redis服务器连接密码(默认为空)
spring.redis.password=
# 连接池最大连接数(使用负值表示没有限制)
spring.redis.jedis.pool.max-active=8
# 连接池最大阻塞等待时间(使用负值表示没有限制)
spring.redis.jedis.pool.max-wait=-1
# 连接池中的最大空闲连接
spring.redis.jedis.pool.max-idle=8
# 连接池中的最小空闲连接
spring.redis.jedis.pool.min-idle=0
# 连接超时时间(毫秒)
spring.redis.timeout=20000

pom.xml
关键包:

<dependency>
            <groupId>com.codingapi.txlcn</groupId>
            <artifactId>txlcn-tm</artifactId>
        </dependency>

完整包:

<?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>
        <groupId>org.txlcn.demo</groupId>
        <artifactId>lcn-demo</artifactId>
        <version>1.0.0</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>txlcn-tm</artifactId>

    <name>txlcn-tm</name>

    <dependencies>

        <dependency>
            <groupId>com.codingapi.txlcn</groupId>
            <artifactId>txlcn-tm</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>

    </dependencies>
</project>

test_a(服务A)关键配置:

启动类加上事务注解配置

@EnableDistributedTransaction

springboot io任务是什么 springboot lcn_xml_13


application.yml:

server:
  port: 8080
spring:
  application:
    name: test-a
  datasource:
      url: jdbc:mysql://localhost:3306/txlcn-demo?useUnicode=true&characterEncoding=utf-8&useSSL=false
      username: root
      password: root
      # MySQL 8.x: com.mysql.cj.jdbc.Driver
      driver-class-name: com.mysql.cj.jdbc.Driver
      type: com.alibaba.druid.pool.DruidDataSource
mybatis:
  configuration:
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

#eureka 地址
eureka:
  client:
    service-url:
      defaultZone: http://127.0.0.1:8761/eureka/

pom.xml
关键包:

<dependency>
            <groupId>com.codingapi.txlcn</groupId>
            <artifactId>txlcn-tc</artifactId>
        </dependency>

        <dependency>
            <groupId>com.codingapi.txlcn</groupId>
            <artifactId>txlcn-txmsg-netty</artifactId>
        </dependency>

完整包:

<?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>
        <groupId>org.txlcn.demo</groupId>
        <artifactId>lcn-demo</artifactId>
        <version>1.0.0</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>test_a</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <dependencies>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>com.codingapi.txlcn</groupId>
            <artifactId>txlcn-tc</artifactId>
        </dependency>

        <dependency>
            <groupId>com.codingapi.txlcn</groupId>
            <artifactId>txlcn-txmsg-netty</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.18</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>2.1.0</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
        </dependency>

    </dependencies>

</project>

test_b(服务B)关键配置:

application.yml:

server:
  port: 8081
spring:
  application:
    name: test-b
  datasource:
    url: jdbc:mysql://localhost:3306/txlcn-demo?useUnicode=true&characterEncoding=utf-8&useSSL=false
    username: root
    password: root
    # MySQL 8.x: com.mysql.cj.jdbc.Driver
    driver-class-name: com.mysql.cj.jdbc.Driver
    type: com.alibaba.druid.pool.DruidDataSource
mybatis:
  configuration:
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

#eureka 地址
eureka:
  client:
    service-url:
      defaultZone: http://127.0.0.1:8761/eureka/

pom.xml

关键包:

<dependency>
            <groupId>com.codingapi.txlcn</groupId>
            <artifactId>txlcn-tc</artifactId>
        </dependency>

        <dependency>
            <groupId>com.codingapi.txlcn</groupId>
            <artifactId>txlcn-txmsg-netty</artifactId>
        </dependency>

完整包:

<?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>
        <groupId>org.txlcn.demo</groupId>
        <artifactId>lcn-demo</artifactId>
        <version>1.0.0</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>test_b</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <dependencies>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>com.codingapi.txlcn</groupId>
            <artifactId>txlcn-tc</artifactId>
        </dependency>

        <dependency>
            <groupId>com.codingapi.txlcn</groupId>
            <artifactId>txlcn-txmsg-netty</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.18</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>2.1.0</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
        </dependency>

    </dependencies>


</project>