springcloud-nacos-seata 实现分布式事务

缺乏、安全感 2023-06-21 03:56 21阅读 0赞

**附：**

**[nacos官方文档][nacos]，[seata官方文档][seata]**

##  1.预备环境准备 ##

![20200618110106405.png][]

**注：如果没有安装64位的jdk1.8或者以上版本，在启动nacos,会报错。**

[root@localhost bin]# sh startup.sh -m standalone
    which: no javac in (/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin)
    readlink: 缺少操作数
    Try 'readlink --help' for more information.
    dirname: 缺少操作数
    Try 'dirname --help' for more information.
    ERROR: Please set the JAVA_HOME variable in your environment, We need java(x64)! jdk8 or later is better! !!

### ** 1.1 解压jdk、nacos、seata：** ###

[root@localhost software]# tar -zxvf jdk-8u241-linux-x64.tar.gz && tar -zxvf nacos-server-1.3.0.tar.gz && tar -zxvf seata-server-1.2.0.tar.gz
    jdk1.8.0_241/

###  1.2 配置jdk环境 ###

**附：[安装配置jdk][jdk]**

##  2. nacos ##

[root@localhost software]# cd nacos
    [root@localhost nacos]# cd bin
    [root@localhost bin]# sh startup.sh -m standalone
    /software/jdk1.8.0_241/bin/java  -Xms512m -Xmx512m -Xmn256m -Dnacos.standalone=true -Dnacos.member.list= -Djava.ext.dirs=/software/jdk1.8.0_241/jre/lib/ext:/software/jdk1.8.0_241/lib/ext -Xloggc:/software/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Dloader.path=/software/nacos/plugins/health,/software/nacos/plugins/cmdb,/software/nacos/plugins/mysql -Dnacos.home=/software/nacos -jar /software/nacos/target/nacos-server.jar  --spring.config.location=classpath:/,classpath:/config/,file:./,file:./config/,file:/software/nacos/conf/ --logging.config=/software/nacos/conf/nacos-logback.xml --server.max-http-header-size=524288
    nacos is starting with standalone
    nacos is starting，you can check the /software/nacos/logs/start.out

**附： **

1.Linux/Unix/Mac
    	启动命令(standalone代表着单机模式运行，非集群模式):
    	sh startup.sh -m standalone
    2.如果您使用的是ubuntu系统，或者运行脚本报错提示[[符号找不到，可尝试如下运行：
    	bash startup.sh -m standalone
    3.Windows
    	启动命令：
    	cmd startup.cmd
    	或者双击startup.cmd运行文件。

**查看nacos启动日志： **

[root@localhost bin]# cat /software/nacos/logs/start.out

**日志内容：**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70][]

**日志内容最后一行： 代表启动成功了。**

2020-06-18 11:06:01,926 INFO Nacos started successfully in stand alone mode. use embedded storage

**访问浏览器[http://192.168.24.140:8848/nacos/index.html][http_192.168.24.140_8848_nacos_index.html]，使用账号/密码：nacos/nacos登录。**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70 1][]

**注：使用宿主机去远程访问虚拟机，需要开放端口，或者关闭虚拟机防火墙：**

[root@localhost bin]# systemctl stop firewalld.service
    [root@localhost bin]# systemctl disable firewalld.service
    Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.
    Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.

## 3. seata ##

### ** 3.1 file.conf:(这里其实不用配，我这里用不到)** ###

### ** 3.2 registy.conf:** ###

registry {
      # file 、nacos 、eureka、redis、zk、consul、etcd3、sofa
      type = "nacos"
    
      nacos {
        application = "seata-server"
        serverAddr = "localhost"
        namespace = ""
        cluster = "default"
        username = ""
        password = ""
      }
    }
    
    config {
      # file、nacos 、apollo、zk、consul、etcd3
      type = "nacos"
    
      nacos {
        serverAddr = "localhost"
        namespace = ""
        group = "SEATA_GROUP"
        username = ""
        password = ""
      }
    
    }

### **3.3 创建seata数据库，并创建三张表：** ###

-- -------------------------------- The script used when storeMode is 'db' --------------------------------
    -- the table to store GlobalSession data
    CREATE TABLE IF NOT EXISTS `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`)
    ) ENGINE = InnoDB
      DEFAULT CHARSET = utf8;
    
    -- the table to store BranchSession data
    CREATE TABLE IF NOT EXISTS `branch_table`
    (
        `branch_id`         BIGINT       NOT NULL,
        `xid`               VARCHAR(128) NOT NULL,
        `transaction_id`    BIGINT,
        `resource_group_id` VARCHAR(32),
        `resource_id`       VARCHAR(256),
        `branch_type`       VARCHAR(8),
        `status`            TINYINT,
        `client_id`         VARCHAR(64),
        `application_data`  VARCHAR(2000),
        `gmt_create`        DATETIME(6),
        `gmt_modified`      DATETIME(6),
        PRIMARY KEY (`branch_id`),
        KEY `idx_xid` (`xid`)
    ) ENGINE = InnoDB
      DEFAULT CHARSET = utf8;
    
    -- the table to store lock data
    CREATE TABLE IF NOT EXISTS `lock_table`
    (
        `row_key`        VARCHAR(128) NOT NULL,
        `xid`            VARCHAR(96),
        `transaction_id` BIGINT,
        `branch_id`      BIGINT       NOT NULL,
        `resource_id`    VARCHAR(256),
        `table_name`     VARCHAR(32),
        `pk`             VARCHAR(36),
        `gmt_create`     DATETIME,
        `gmt_modified`   DATETIME,
        PRIMARY KEY (`row_key`),
        KEY `idx_branch_id` (`branch_id`)
    ) ENGINE = InnoDB
      DEFAULT CHARSET = utf8;

### **3.3  将seata配置推送到nacos** ###

**在1.2版本已经不在给我们的包中提供这些文件了 ：（1）nacos-config.sh   (2)config.txt**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70 2][]![20200618215052399.png][]

** 可以在seata的GitHub项目中找到对应的文件：[https://github.com/seata/seata/tree/1.2.0/script/config-center][https_github.com_seata_seata_tree_1.2.0_script_config-center]**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70 3][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70 4][]

**config.txt:（根据自己需要修改，跟file.conf内容其实一样）**

transport.type=TCP
    transport.server=NIO
    transport.heartbeat=true
    transport.enableClientBatchSendRequest=false
    transport.threadFactory.bossThreadPrefix=NettyBoss
    transport.threadFactory.workerThreadPrefix=NettyServerNIOWorker
    transport.threadFactory.serverExecutorThreadPrefix=NettyServerBizHandler
    transport.threadFactory.shareBossWorker=false
    transport.threadFactory.clientSelectorThreadPrefix=NettyClientSelector
    transport.threadFactory.clientSelectorThreadSize=1
    transport.threadFactory.clientWorkerThreadPrefix=NettyClientWorkerThread
    transport.threadFactory.bossThreadSize=1
    transport.threadFactory.workerThreadSize=default
    transport.shutdown.wait=3
    service.vgroupMapping.storage-service-group=default
    service.vgroupMapping.order-service-group=default
    service.default.grouplist=127.0.0.1:8091
    service.enableDegrade=false
    service.disableGlobalTransaction=false
    client.rm.asyncCommitBufferLimit=10000
    client.rm.lock.retryInterval=10
    client.rm.lock.retryTimes=30
    client.rm.lock.retryPolicyBranchRollbackOnConflict=true
    client.rm.reportRetryCount=5
    client.rm.tableMetaCheckEnable=false
    client.rm.sqlParserType=druid
    client.rm.reportSuccessEnable=false
    client.rm.sagaBranchRegisterEnable=false
    client.tm.commitRetryCount=5
    client.tm.rollbackRetryCount=5
    store.mode=db
    store.file.dir=file_store/data
    store.file.maxBranchSessionSize=16384
    store.file.maxGlobalSessionSize=512
    store.file.fileWriteBufferCacheSize=16384
    store.file.flushDiskMode=async
    store.file.sessionReloadReadSize=100
    store.db.datasource=druid
    store.db.dbType=mysql
    store.db.driverClassName=com.mysql.cj.jdbc.Driver
    store.db.url=jdbc:mysql://127.0.0.1:3306/seata?useUnicode=true
    store.db.user=root
    store.db.password=123456
    store.db.minConn=5
    store.db.maxConn=30
    store.db.globalTable=global_table
    store.db.branchTable=branch_table
    store.db.queryLimit=100
    store.db.lockTable=lock_table
    store.db.maxWait=5000
    server.recovery.committingRetryPeriod=1000
    server.recovery.asynCommittingRetryPeriod=1000
    server.recovery.rollbackingRetryPeriod=1000
    server.recovery.timeoutRetryPeriod=1000
    server.maxCommitRetryTimeout=-1
    server.maxRollbackRetryTimeout=-1
    server.rollbackRetryTimeoutUnlockEnable=false
    client.undo.dataValidation=true
    client.undo.logSerialization=jackson
    server.undo.logSaveDays=7
    server.undo.logDeletePeriod=86400000
    client.undo.logTable=undo_log
    client.log.exceptionRate=100
    transport.serialization=seata
    transport.compressor=none
    metrics.enabled=false
    metrics.registryType=compact
    metrics.exporterList=prometheus
    metrics.exporterPrometheusPort=9898

**ps:这里因为是mysql8.0.因此这里用的是com.mysql.cj.jdbc.Driver，否则在启动seata时，会报空指针，获取连接失败。**

**nacos-config.sh：（直接从GitHub上seata项目中拷贝即可）**

#!/usr/bin/env bash
    # Copyright 1999-2019 Seata.io Group.
    #
    # Licensed under the Apache License, Version 2.0 (the "License");
    # you may not use this file except in compliance with the License.
    # You may obtain a copy of the License at、
    #
    #      http://www.apache.org/licenses/LICENSE-2.0
    #
    # Unless required by applicable law or agreed to in writing, software
    # distributed under the License is distributed on an "AS IS" BASIS,
    # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    # See the License for the specific language governing permissions and
    # limitations under the License.
    
    while getopts ":h:p:g:t:" opt
    do
      case $opt in
      h)
        host=$OPTARG
        ;;
      p)
        port=$OPTARG
        ;;
      g)
        group=$OPTARG
        ;;
      t)
        tenant=$OPTARG
        ;;
      ?)
        echo " USAGE OPTION: $0 [-h host] [-p port] [-g group] [-t tenant] "
        exit 1
        ;;
      esac
    done
    
    if [[ -z ${host} ]]; then
        host=localhost
    fi
    if [[ -z ${port} ]]; then
        port=8848
    fi
    if [[ -z ${group} ]]; then
        group="SEATA_GROUP"
    fi
    if [[ -z ${tenant} ]]; then
        tenant=""
    fi
    
    nacosAddr=$host:$port
    contentType="content-type:application/json;charset=UTF-8"
    
    echo "set nacosAddr=$nacosAddr"
    echo "set group=$group"
    
    failCount=0
    tempLog=$(mktemp -u)
    function addConfig() {
      curl -X POST -H "${1}" "http://$2/nacos/v1/cs/configs?dataId=$3&group=$group&content=$4&tenant=$tenant" >"${tempLog}" 2>/dev/null
      if [[ -z $(cat "${tempLog}") ]]; then
        echo " Please check the cluster status. "
        exit 1
      fi
      if [[ $(cat "${tempLog}") =~ "true" ]]; then
        echo "Set $3=$4 successfully "
      else
        echo "Set $3=$4 failure "
        (( failCount++ ))
      fi
    }
    
    count=0
    for line in $(cat $(dirname "$PWD")/config.txt | sed s/[[:space:]]//g); do
      (( count++ ))
    	key=${line%%=*}
      value=${line#*=}
    	addConfig "${contentType}" "${nacosAddr}" "${key}" "${value}"
    done
    
    echo "========================================================================="
    echo " Complete initialization parameters,  total-count:$count ,  failure-count:$failCount "
    echo "========================================================================="
    
    if [[ ${failCount} -eq 0 ]]; then
    	echo " Init nacos config finished, please start seata-server. "
    else
    	echo " init nacos config fail. "
    fi

**注：store.db.driverClassName这个配置如果是mysql8.0，这里需要改成com.mysql.cj.jdbc.Driver，刚开始我使用默认的com.mysql.jdbc.Driver，导致seata无法启动，连接不上。**

**使用脚本，将seata的配置推送到nacos中： **

[root@localhost conf]# sh nacos-config.sh localhost

**注：如果这一步推送服务出错，而你确实是从seata的GitHub中拷贝下来的，确保没有问题，却提示语法错误，首先看下文件是否是utf-8。**

**参数说明：**

**-h: host，默认值 localhost**

**-p: port，默认值 8848**

**-g: 配置分组，默认值为 'SEATA\_GROUP'**

**-t: 租户信息，对应 Nacos 的命名空间ID字段, 默认值为空 ''**

**执行脚本后，控制台打印：**

=========================================================================
     Complete initialization parameters,  total-count:68 ,  failure-count:0
    =========================================================================
     Init nacos config finished, please start seata-server.

**再次访问浏览器[http://192.168.24.140:8848/nacos/index.html][http_192.168.24.140_8848_nacos_index.html]，使用账号/密码：nacos/nacos登录**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70 5][]

**       会看到大量的配置加载到了nacos当中，这里我根据Data Id为service.vgroupMapping.$\{your-service-gruop\}，，可以看到storage-service-group和order-service-group配置也被加载到了nacos中。**

**ps: 当然也可以使用如下命令将seata的配置推送到nacos：(这里选其中一种即可，我就直接使用上面那种，用默认的命名空间public了)**

**创建命名空间：**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70 6][]

[root@localhost conf]# sh nacos-config.sh -h localhost -p 8848 -g SEATA_GROUP -t eadf9fc7-4f4b-4134-81a0-e82e06268965

**访问浏览器[http://192.168.24.140:8848/nacos/index.html][http_192.168.24.140_8848_nacos_index.html]，使用账号/密码：nacos/nacos登录**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70 7][]

### **3.4 启动seata** ###

[root@localhost seata]# cd bin
    [root@localhost bin]# sh seata-server.sh -p 8091 -h 192.168.24.140 -m db
    
    
    #下面两种启动命令参考：
    cd bin
    sh seata-server.sh -p 8091 -m db
    #or 
    sh seata-server.sh

**控制台： **

![20200618223355303.png][]

**注：如果seata服务端的registy.conf文件没有配置，启动seata会提示无法创建mysql连接，并一直空指针异常，假如你想使用nacos做为配置中心，里面存放seata的配置，****那么就是从nacos中读取你的配置，你不配置registy.conf，seata就读不到。**

**再次访问nacos：查看服务列表seata-server被注册进去了**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70 8][]

** 点击详情查看：**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70 9][]

**注：seata 1.2的服务名是seata-server，1.2版本以前不是叫这个名字，另外这个ip地址查看是否是虚拟机ip,我原先启动seata直接使用`sh seata-server.sh，``并没有指定ip,启动项目后:`**

**`问题：`**

**`  报`**io.seata.common.exception.FrameworkException: can not register RM,err:can not connect to services-server.

**解决：**

**   参考：(1)[https://github.com/seata/seata/issues/2522][https_github.com_seata_seata_issues_2522]  （2）[https://seata.io/zh-cn/docs/overview/faq.html][https_seata.io_zh-cn_docs_overview_faq.html]**

**使用jps查看： 除了jps本身之外，server是seata的，nacos-server.jar是nacos:**

[root@localhost ~]# jps
    16803 Server
    16220 nacos-server.jar
    16879 Jps

## 4. 代码 ##

### 4.1 order-service ###

<dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-seata</artifactId>
                <version>2.1.1.RELEASE</version>
                <exclusions>
                    <exclusion>
                        <groupId>io.seata</groupId>
                        <artifactId>seata-all</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>
            <dependency>
                <groupId>io.seata</groupId>
                <artifactId>seata-all</artifactId>
                <version>1.2.0</version>
            </dependency>

**application.yml: （registry.conf中内容挪到了application.yml中，因此不需要registry.conf文件，只要一个application.yml即可）**

server:
      port: 8080
    
    spring:
      application:
        name: order-service
      datasource:
        druid:
          url: jdbc:mysql://192.168.24.140:3306/seata_order?allowMultiQueries=true&useSSL=false
          username: root
          password: 123456
          driver-class-name: com.mysql.cj.jdbc.Driver
      cloud:
        nacos:   # Nacos 注册中心地址
          discovery:
            server-addr: 192.168.24.140:8848
    seata:
      enabled: true
      application-id: ${spring.application.name}
      tx-service-group: ${spring.application.name}-group
      enable-auto-data-source-proxy: true
      config:
        type: nacos
        nacos:
          namespace:
          serverAddr: 192.168.24.140:8848
          group: SEATA_GROUP
          userName: "nacos"
          password: "nacos"
      registry:
        type: nacos
        nacos:
          application: seata-server
          server-addr: 192.168.24.140:8848
          namespace:
          userName: "nacos"
          password: "nacos"
    
    logging:
      level:
        io.seata: debug

### 4.2 storage-service  ###

**ps:**

**       pom.xml中引入seata包一致，application.yml中大部分一致，数据库名改成storage-service自己的库，应用名改成storage-service即可。**

### 4.3 测试 ###

**启动成功：控制台也并无报错：**

**postman测试：**

**（1）成功提交：localhost:8080/order/placeOrder/commit**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70 10][]

**数据库中：订单表已经有一条数据，库存表商品库存数量减1**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70 11][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70 12][]

**（2）失败回滚：localhost:8080/order/placeOrder/rollback**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70 13][]

**order-service服务远程调用storage-service服务：**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70 14][]

**在****storage-service服务中，模拟异常：**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70 15][]

**order-service: 控制台打印信息**

2020-07-01 14:22:51.129  INFO 23884 --- [nio-8080-exec-3] i.seata.tm.api.DefaultGlobalTransaction  : [192.168.24.140:8091:2015773465] rollback status: Rollbacked
    2020-07-01 14:22:51.145 ERROR 23884 --- [nio-8080-exec-3] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is feign.FeignException: status 500 reading StorageFeignClient#deduct(String,Integer); content:
    {"timestamp":"2020-07-01T06:22:51.001+0000","status":500,"error":"Internal Server Error","message":"异常:模拟业务异常:Storage branch exception","path":"/storage/deduct"}] with root cause
    
    feign.FeignException: status 500 reading StorageFeignClient#deduct(String,Integer); content:
    {"timestamp":"2020-07-01T06:22:51.001+0000","status":500,"error":"Internal Server Error","message":"异常:模拟业务异常:Storage branch exception","path":"/storage/deduct"}
    	at feign.FeignException.errorStatus(FeignException.java:62) ~[feign-core-9.5.1.jar:na]

**storage-service:控制台打印信息**

2020-07-01 14:22:50.986  WARN 15036 --- [nio-9080-exec-3] c.a.c.seata.web.SeataHandlerInterceptor  : xid in change during RPC from 192.168.24.140:8091:2015773465 to null
    2020-07-01 14:22:50.994 ERROR 15036 --- [nio-9080-exec-3] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.RuntimeException: 异常:模拟业务异常:Storage branch exception] with root cause
    
    java.lang.RuntimeException: 异常:模拟业务异常:Storage branch exception
    	at com.work.storage.service.StorageService.deduct(StorageService.java:37) ~[classes/:na]
    	at com.work.storage.service.StorageService$$FastClassBySpringCGLIB$$1fc49d96.invoke(<generated>) ~[classes/:na]
    	at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) ~[spring-core-5.0.10.RELEASE.jar:5.0.10.RELEASE]

**ps:**

**在启动order-service和****storage-service服务后，用postman测试接口提示如下问题：**

Could not commit JDBC transaction; nested exception is io.seata.rm.datasource.exec.LockConflictException: get global lock fail

** 我发现seata表中有数据，于是我将seata表中的数据都删了，重启seata，然后再启动项目，问题没有再出现了。**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70 16][]

### 注： ###

**当我删掉service.vgroupMapping.storage-service-group和service.vgroupMapping.order-service-group这两个配置。**![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70 17][]

**控制台立马报错：i.s.c.r.netty.NettyClientChannelManager  : no available service 'null' found, please make sure registry config correct**

![20200701193918982.png][]

**因此这个错误可能是：**

**（1）是不是将seata的配置推送到了nacos当中（上面有推送的方法）。**

**（2）首先检查客户端代码配置的seata.tx-service-group: $\{spring.application.name\}\-group与nacos中的配置service.vgroupMapping.$\{spring.application.name\}\-group的$\{spring.application.name\}是不是一致。**

![20200701201436792.png][]

**参考：[springcloud-nacos-seata官方demo][springcloud-nacos-seata_demo]**

[nacos]: https://nacos.io/zh-cn/docs/what-is-nacos.html
[seata]: https://seata.io/zh-cn/docs/user/configurations100.html
[20200618110106405.png]: https://img-blog.csdnimg.cn/20200618110106405.png
[jdk]: https://blog.csdn.net/qq_37495786/article/details/81944895
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[http_192.168.24.140_8848_nacos_index.html]: http://192.168.24.140:8848/nacos/index.html
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20200618112212538.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2,size_16,color_FFFFFF,t_70
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[20200618215052399.png]: https://img-blog.csdnimg.cn/20200618215052399.png
[https_github.com_seata_seata_tree_1.2.0_script_config-center]: https://github.com/seata/seata/tree/1.2.0/script/config-center
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70 3]: https://img-blog.csdnimg.cn/20200618215927742.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2,size_16,color_FFFFFF,t_70
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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70 6]: https://img-blog.csdnimg.cn/20200618222034191.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2,size_16,color_FFFFFF,t_70
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[20200618223355303.png]: https://img-blog.csdnimg.cn/20200618223355303.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70 8]: https://img-blog.csdnimg.cn/20200619233531509.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70 9]: https://img-blog.csdnimg.cn/20200619233559288.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2,size_16,color_FFFFFF,t_70
[https_github.com_seata_seata_issues_2522]: https://github.com/seata/seata/issues/2522
[https_seata.io_zh-cn_docs_overview_faq.html]: https://seata.io/zh-cn/docs/overview/faq.html
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70 10]: https://img-blog.csdnimg.cn/20200701134640340.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2,size_16,color_FFFFFF,t_70
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[20200701193918982.png]: https://img-blog.csdnimg.cn/20200701193918982.png
[20200701201436792.png]: https://img-blog.csdnimg.cn/20200701201436792.png
[springcloud-nacos-seata_demo]: https://github.com/seata/seata-samples/tree/master/springcloud-nacos-seata