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seata分布式事务Windows本地搭建+AT模式

夜. 2022-09-20 03:32:47

1.seata 数据源配置

下载seata程序包，此处版本为1.4.2
https://github.com/seata/seata/releases/tag/v1.4.2
图片alt

修改配置文件E:\APP\seata\seata-server-1.4.2\seata\seata-server-1.4.2\conf\file.conf
此处修改默认配置为：seata数据源类型为db，并配置mysql数据源

## transaction log store, only used in seata-server
store {
  ## store mode: file、db、redis
  mode = "db"
  ## rsa decryption public key
  publicKey = ""
  ## file store property
  file {
    ## store location dir
    dir = "sessionStore"
    # branch session size , if exceeded first try compress lockkey, still exceeded throws exceptions
    maxBranchSessionSize = 16384
    # globe session size , if exceeded throws exceptions
    maxGlobalSessionSize = 512
    # file buffer size , if exceeded allocate new buffer
    fileWriteBufferCacheSize = 16384
    # when recover batch read size
    sessionReloadReadSize = 100
    # async, sync
    flushDiskMode = async
  }
  ## database store property
  db {
    ## the implement of javax.sql.DataSource, such as DruidDataSource(druid)/BasicDataSource(dbcp)/HikariDataSource(hikari) etc.
    datasource = "druid"
    ## mysql/oracle/postgresql/h2/oceanbase etc.
    dbType = "mysql"
    driverClassName = "com.mysql.cj.jdbc.Driver"
    ## if using mysql to store the data, recommend add rewriteBatchedStatements=true in jdbc connection param
    url = "jdbc:mysql://127.0.0.1:3306/seata?characterEncoding=UTF-8&useUnicode=true&useSSL=false&tinyInt1isBit=false&allowPublicKeyRetrieval=true&serverTimezone=Asia/Shanghai""
    user = "root"
    password = "root"
    minConn = 5
    maxConn = 100
    globalTable = "global_table"
    branchTable = "branch_table"
    lockTable = "lock_table"
    queryLimit = 100
    maxWait = 5000
  }

  ## redis store property
  redis {
    ## redis mode: single、sentinel
    mode = "single"
    ## single mode property
    single {
      host = "127.0.0.1"
      port = "6379"
    }
    ## sentinel mode property
    sentinel {
      masterName = ""
      ## such as "10.28.235.65:26379,10.28.235.65:26380,10.28.235.65:26381"
      sentinelHosts = ""
    }
    password = ""
    database = "0"
    minConn = 1
    maxConn = 10
    maxTotal = 100
    queryLimit = 100
  }
}

如果用mysql作为数据源，需要初始化SQL建表，下面贴出：
图片alt

DROP TABLE IF EXISTS `branch_table`;
CREATE TABLE `branch_table`  (
  `branch_id` bigint(20) NOT NULL,
  `xid` varchar(128) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
  `transaction_id` bigint(20) NULL DEFAULT NULL,
  `resource_group_id` varchar(32) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `resource_id` varchar(256) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `branch_type` varchar(8) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `status` tinyint(4) NULL DEFAULT NULL,
  `client_id` varchar(64) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `application_data` varchar(2000) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `gmt_create` datetime(0) NULL DEFAULT NULL,
  `gmt_modified` datetime(0) NULL DEFAULT NULL,
  PRIMARY KEY (`branch_id`) USING BTREE,
  INDEX `idx_xid`(`xid`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
 
-- ----------------------------
-- Table structure for global_table
-- ----------------------------
DROP TABLE IF EXISTS `global_table`;
CREATE TABLE `global_table`  (
  `xid` varchar(128) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
  `transaction_id` bigint(20) NULL DEFAULT NULL,
  `status` tinyint(4) NOT NULL,
  `application_id` varchar(32) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `transaction_service_group` varchar(32) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `transaction_name` varchar(128) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `timeout` int(11) NULL DEFAULT NULL,
  `begin_time` bigint(20) NULL DEFAULT NULL,
  `application_data` varchar(2000) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `gmt_create` datetime(0) NULL DEFAULT NULL,
  `gmt_modified` datetime(0) NULL DEFAULT NULL,
  PRIMARY KEY (`xid`) USING BTREE,
  INDEX `idx_gmt_modified_status`(`gmt_modified`, `status`) USING BTREE,
  INDEX `idx_transaction_id`(`transaction_id`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
 
-- ----------------------------
-- Table structure for lock_table
-- ----------------------------
DROP TABLE IF EXISTS `lock_table`;
CREATE TABLE `lock_table`  (
  `row_key` varchar(128) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
  `xid` varchar(96) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `transaction_id` bigint(20) NULL DEFAULT NULL,
  `branch_id` bigint(20) NOT NULL,
  `resource_id` varchar(256) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `table_name` varchar(32) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `pk` varchar(36) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `gmt_create` datetime(0) NULL DEFAULT NULL,
  `gmt_modified` datetime(0) NULL DEFAULT NULL,
  PRIMARY KEY (`row_key`) USING BTREE,
  INDEX `idx_branch_id`(`branch_id`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;

2.seata 注册配置

编辑E:\soft\seata\seata\conf\registory.conf

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

  nacos {
    application = "seata-server"
    serverAddr = "127.0.0.1:8848"
    group = "SEATA_GROUP"
    namespace = "public"
    cluster = "default"
    username = "nacos"
    password = "nacos"
  }
  eureka {
    serviceUrl = "http://localhost:8761/eureka"
    application = "default"
    weight = "1"
  }
  redis {
    serverAddr = "localhost:6379"
    db = 0
    password = ""
    cluster = "default"
    timeout = 0
  }
  zk {
    cluster = "default"
    serverAddr = "127.0.0.1:2181"
    sessionTimeout = 6000
    connectTimeout = 2000
    username = ""
    password = ""
  }
  consul {
    cluster = "default"
    serverAddr = "127.0.0.1:8500"
    aclToken = ""
  }
  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 = "nacos"

  nacos {
    serverAddr = "127.0.0.1:8848"
    namespace = "public"
    group = "SEATA_GROUP"
    username = "nacos"
    password = "nacos"
    # dataId = "seataServer.properties"
  }
  consul {
    serverAddr = "127.0.0.1:8500"
    aclToken = ""
  }
  apollo {
    appId = "seata-server"
    ## apolloConfigService will cover apolloMeta
    apolloMeta = "http://192.168.1.204:8801"
    apolloConfigService = "http://192.168.1.204:8080"
    namespace = "application"
    apolloAccesskeySecret = ""
    cluster = "seata"
  }
  zk {
    serverAddr = "127.0.0.1:2181"
    sessionTimeout = 6000
    connectTimeout = 2000
    username = ""
    password = ""
    nodePath = "/seata/seata.properties"
  }
  etcd3 {
    serverAddr = "http://localhost:2379"
  }
  file {
    name = "file.conf"
  }
}

3.推送详细配置到nacos

进入nacos项目地址，下载配置文件，或复制粘贴到本地

https://github.com/seata/seata/tree/1.3.0/script/config-center

在seata/script/config-center/中找到config.txt文件
在seata/script/config-center/nacos/中找到nacos-config.sh脚本

下载完成后config.txt放在bin同级目录下，bin同级目录下新建script文件夹，将sh脚本放入其中

进入script目录，cmd：启动脚本

nacos-config.sh -h localhost -p 8848 -g  STATE_GROUP -u nacos -w nacos

-h: nacos地址
-p: nacos端口
-t: 命名空间id
-g: 组名
-u -w: nacos账户名密码

图片alt
修改config.txt内容

验证在nacos上对应命名空间查看配置文件是否上传成功

4.启动seata

进入目录 E:\soft\seata\seata\bin 启动seata-server.bat，如遇闪退，可以在cmd命令行中执行bat启动程序，这种方式可以查看错误日志

报错问题解决

仔细看还有个报错：
receive invalid redirect request from peer
启动seata时报错。
我是将seata与nacos配置在同一个云服务器上。
但是我registry.conf中配置的ip是公网ip。改为私网ip就好了。

第二节 SEATA AT模式+单机模式

1、建库建表

SEATA AT 模式需要 UNDO_LOG 表

增加undo_log表

在每一个微服务数据库中增加undo_log表

-- for AT mode you must to init this sql for you business database. the seata server not need it.
CREATE TABLE IF NOT EXISTS `undo_log`
(
`branch_id`     BIGINT       NOT NULL COMMENT 'branch transaction id',
`xid`           VARCHAR(128) NOT NULL COMMENT 'global transaction id',
`context`       VARCHAR(128) NOT NULL COMMENT 'undo_log context,such as serialization',
`rollback_info` LONGBLOB     NOT NULL COMMENT 'rollback info',
`log_status`    INT(11)      NOT NULL COMMENT '0:normal status,1:defense status',
`log_created`   DATETIME(6)  NOT NULL COMMENT 'create datetime',
`log_modified`  DATETIME(6)  NOT NULL COMMENT 'modify datetime',
UNIQUE KEY `ux_undo_log` (`xid`, `branch_id`)
) ENGINE = InnoDB
  AUTO_INCREMENT = 1
  DEFAULT CHARSET = utf8 COMMENT ='AT transaction mode undo table';

业务表
两个不同的数据库db_money_bj和db_money_sh，创建两个相同的表

CREATE TABLE `tb_money` (
  `user_id` int(11) NOT NULL AUTO_INCREMENT COMMENT '用户ID',
  `user_name` varchar(255) DEFAULT NULL COMMENT '用户姓名',
  `user_money` int(11) NOT NULL DEFAULT '0' COMMENT '账户余额：单位分',
  `create_time` datetime DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
  `update_time` datetime DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
  PRIMARY KEY (`user_id`) USING BTREE
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8mb4 ROW_FORMAT=DYNAMIC;

2、引入依赖

<dependency>
        <groupId>io.seata</groupId>
        <artifactId>seata-spring-boot-starter</artifactId>
        <version>1.4.2</version>
    </dependency>
    <dependency>
        <groupId>com.alibaba.cloud</groupId>
        <artifactId>spring-cloud-starter-alibaba-seata</artifactId>
        <version>2021.1</version>
        <exclusions>
            <exclusion>
                <groupId>io.seata</groupId>
                <artifactId>seata-spring-boot-starter</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

3、配置文件

每个微服务都需要添加依赖和修改配置文件

## seata配置
seata.enabled=true
seata.application-id=server-seata-sh
seata.registry.type=file
seata.config.type=file
seata.service.grouplist.default=127.0.0.1:8091
seata.service.vgroup-mapping.server-seata-money=default
seata.tx-service-group=server-seata-money
seata.client.undo.log-table=undo_log

4、2个转账微服务接口

两个微服务接口代码相同、表名相同、数据库不同

package com.shenmazong.controller;

import com.shenmazong.mapper.TbMoneyMapper;
import com.shenmazong.pojo.TbMoney;
import io.seata.spring.annotation.GlobalTransactional;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

/**
 * @author 军哥
 * @version 1.0
 * @description: MoneyController
 * @date 2022/7/12 11:25
 */

@RestController
@Slf4j
@RequestMapping(value = "/money")
public class MoneyController {

    @Autowired
    TbMoneyMapper tbMoneyMapper;

    @GlobalTransactional
    @PostMapping(value = "/pay")
    public Object pay(@RequestParam("userId") Integer userId, @RequestParam("money") Integer money) {

        TbMoney tbMoney = tbMoneyMapper.selectById(userId);
        tbMoney.setUserMoney(tbMoney.getUserMoney()+money);

        tbMoneyMapper.updateById(tbMoney);
        return tbMoney;
    }
}

5、协同转账服务器

controller代码

package com.shenmazong.controller;

import com.shenmazong.service.BjMoneyService;
import com.shenmazong.service.ShMoneyService;
import io.seata.spring.annotation.GlobalTransactional;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @author 军哥
 * @version 1.0
 * @description: MoneyController
 * @date 2022/7/12 11:52
 */

@RestController
@Slf4j
@RequestMapping(value = "/money")
public class MoneyController {

    @Autowired
    BjMoneyService bjMoneyService;

    @Autowired
    ShMoneyService shMoneyService;

    @GlobalTransactional
    @GetMapping(value = "/turn/{fromId}/{toId}/{money}")
    public Object turn(@PathVariable("fromId") Integer fromId,
                       @PathVariable("toId") Integer toId,
                       @PathVariable("money") Integer money) throws Exception {

        bjMoneyService.pay(fromId, money*(-1));
        shMoneyService.pay(toId, money);

        return "OK";
    }
}

service接口代码

package com.shenmazong.service;

import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;

@Component
@FeignClient(name = "server-seata-bj")
public interface BjMoneyService {

    @PostMapping(value = "/money/pay")
    public Object pay(@RequestParam("userId") Integer userId, @RequestParam("money") Integer money);
}

package com.shenmazong.service;

import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;

@Component
@FeignClient(name = "server-seata-sh")
public interface ShMoneyService {
    @PostMapping(value = "/money/pay")
    public Object pay(@RequestParam("userId") Integer userId, @RequestParam("money") Integer money);
}

6、运行测试

这里没有进行异常拦截，但是不影响测试
图片alt

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