seata 1.2 版本分布式事务的配置使用_seata yml配置

seata-server-1.2.0.zip  程序（打过报的服务端程序，而非源代码！）解压，放在一个固定目录里，启动包: seata-->conf-->fifile.conf，fifile.conf文件的默认配置是 file 格式，为了方便开发观察我们修改store.mode="db"，然后修改自己的db连接信息，seata在启动的时候会去读取这个配置文件。如同目录：

 内容如下：

 
## transaction log store, only used in seata-server
store {
  ## store mode: file、db
  mode = "db"
 
  ## database store property
  db {
    ## the implement of javax.sql.DataSource, such as DruidDataSource(druid)/BasicDataSource(dbcp) etc.
    datasource = "druid"
    ## mysql/oracle/postgresql/h2/oceanbase etc.
    dbType = "mysql"
    driverClassName = "com.mysql.jdbc.Driver"
    url = "jdbc:mysql://10.130.16.2466:305199/ZIPKIN"
    user = "mysql"
    password = "mysql"
    minConn = 5
    maxConn = 30
    globalTable = "global_table"
    branchTable = "branch_table"
    lockTable = "lock_table"
    queryLimit = 100
    maxWait = 5000
  }
}

3、配置服务注册信息：

如果我们使用nacos做注册中心和配置中心，可以把这些信息放到nacos的配置中心，从而实现动态更新。这时你就需要修改seata-->conf-->registy.conf文件当中的注册中心和配置中心的信息，修改成为nacos；（为什么需要修改config和register呢？因为如果你的seata服务器想要去配置中心读取配置，那么首先要把自己注册到nacos；所以registy.conf当中需要配置注册中心的地址也需要配置配置中心的地址）这样我们后面启动seata就可以看到他是作为了一个nacos的客户端注册到了nacos里，核心配置如下:

registry {
  # file 、nacos 、eureka、redis、zk、consul、etcd3、sofa   这里type 选 nacos类型
  type = "nacos"
 
  nacos {
    application = "seata-server"
    serverAddr = "http://172.21.2.72:8849" 
    namespace = ""   #注册到哪个命名空间，默认public
    cluster = "default"
    username = "nacos"
    password = "nacos"
  }
  
  consul {
    cluster = "default"
    serverAddr = "127.0.0.1:8500"
  }
 
  file {
    name = "file.conf"
  }
}
 
config {
  # file、nacos 、apollo、zk、consul、etcd3  这里type 选 nacos类型
  type = "nacos"
 
  nacos {
    serverAddr = "http://172.21.2.72:8849"
    namespace = "23d0f9d9-096e-4fea-a548-e3ba778a6b83"  #去哪个命名空间取配置信息
    group = "SEATA_GROUP"  #对应的组别
    username = "nacos"
    password = "nacos"
  }
  consul {
    serverAddr = "127.0.0.1:8500"
  }
  
  file {
    name = "file.conf"
  }
}

此时seata已经可以作为客户端注册到nacos了：先启动nacos 在启动Seata :双击bat文件

启动成功页面：

启动后访问nacos页面，看到seata 已经成功注册到 nacos 注册中心了。 

参考官网：seata注册到nacos 

#!/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:u:w:" opt
do
  case $opt in
  h)
    host=$OPTARG
    ;;
  p)
    port=$OPTARG
    ;;
  g)
    group=$OPTARG
    ;;
  t)
    tenant=$OPTARG
    ;;
  u)
    username=$OPTARG
    ;;
  w)
    password=$OPTARG
    ;;
  ?)
    echo " USAGE OPTION: $0 [-h host] [-p port] [-g group] [-t tenant] [-u username] [-w password] "
    exit 1
    ;;
  esac
done
 
if [[ -z ${host} ]]; then
    host=172.21.2.72
fi
if [[ -z ${port} ]]; then
    port=8849
fi
if [[ -z ${group} ]]; then
    group="SEATA_GROUP"
fi
if [[ -z ${tenant} ]]; then
    tenant="23d0f9d9-096e-4fea-a548-e3ba778a6b83"
fi
if [[ -z ${username} ]]; then
    username="nacos"
fi
if [[ -z ${password} ]]; then
    password="nacos"
fi
 
nacosAddr=$host:$port
contentType="content-type:application/json;charset=UTF-8"
 
echo "set nacosAddr=$nacosAddr"
echo "set group=$group"
 
failCount=0
tempLog=$(mktemp -u)
function addConfig() {
  curl -X POST -H "${contentType}" "http://$nacosAddr/nacos/v1/cs/configs?dataId=$1&group=$group&content=$2&tenant=$tenant&username=$username&password=$password" >"${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 $1=$2 successfully "
  else
    echo "Set $1=$2 failure "
    (( failCount++ ))
  fi
}
 
count=0
for line in $(cat $(dirname "$PWD")/config.txt | sed s/[[:space:]]//g); do
  (( count++ ))
	key=${line%%=*}
    value=${line#*=}
	addConfig "${key}" "${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

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

3、yml配置文件信息参考目录  seata-develop\script\client\spring  源码：

spring:
  profiles:
    active: dev
  application:
    name: power
  cloud:
    nacos:
      config:
        #自定义配置
        server-addr: 172.21.2.72:8849
        namespace: 23d0f9d9-096e-4fea-a548-e3ba778a6b83
        group: nmp-power
        file-extension: yml
        prefix: nmp-power
 
      discovery:
        server-addr: 172.21.2.72:8849
        namespace: 23d0f9d9-096e-4fea-a548-e3ba778a6b83
 
 
#seata分布式事务配置，此为精简后的配置，大家可根据实际场景适当选择添加修改等
seata:
  enabled: true
  application-id: power
#  tx-service-group: default
  tx-service-group: my_test_tx_group
  enable-auto-data-source-proxy: true
  use-jdk-proxy: false
  config:
    type: nacos
    nacos:
      namespace: 23d0f9d9-096e-4fea-a548-e3ba778a6b83
      serverAddr: 172.21.2.72:8849
      group: SEATA_GROUP
      userName: "nacos"
      password: "nacos"
  registry:
    type: nacos
    nacos:
      application: seata-server
      server-addr: 172.21.2.72:8849
      namespace: 23d0f9d9-096e-4fea-a548-e3ba778a6b83
      userName: "nacos"
      password: "nacos"

或者把seata的客户端配置和此微服务的其他配置信息一起配置到nacos配置中心里，这也是一种比较可取的方案，如下图：

   //分布式事务注解 
    @GlobalTransactional(name = "default",rollbackFor = Exception.class)
    @Override
    public void saveCatAndDataRelations(ServiceSetCatModel setCatModel) {
        //省略其他业务代码.....
         saveCatAndDataRelation(setCatalogModel);
          //省略其他业务代码.....
        catInfoMapper.insertSelective(catalogInfo);
 
        if(serviceDataRelation.getServiceId()>25){
            throw new RuntimeException("出现异常");
        }
 
    }

5、启动客户端微服务后，调用接口测试分布式事务功能