在此之前我搞了一天，雖然seata好用，用起來也超級簡單，但是安裝配置是真的麻煩，遇見了各種坑，下面來進入正題。o(???)o

注意：如果版本不匹配也會有各種報錯，可以根據官網匹配版本。

seata：1.3.0alibaba.cloud：2.2.3.RELEASEnacos：2.0.2二. docker安裝搭建seata服務端

2.1 下載seata鏡像

docker pull seataio/seata-server:1.3.0

2.2 在Linux目錄下創建registry.conf，我的路徑在/data/seate/registry.conf，接下來的所有創建都在這個目錄下

cd /datamkdir seatevim registry.conf

2.3 registry.conf中的內容如下

registry { type = 'nacos' nacos { application = 'seata-server' serverAddr = '127.0.0.1:8848' group = 'SEATA_GROUP' namespace = '' cluster = 'default' username = '' password = '' }} config { type = 'nacos' nacos { serverAddr = '127.0.0.1:8848' namespace = '' group = 'SEATA_GROUP' username = '' password = '' }}

注意registry和config需要在同一個組下,注冊中心我用的是nacos，注意nacos的地址要改。

----->>>這里我插一句，需要新建一個數據庫seata，并且新建三張表，

-- -------------------------------- The script used when storeMode is ’db’ ---------------------------------- the table to store GlobalSession dataCREATE 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 dataCREATE 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 dataCREATE 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;

實現分布式每個業務庫都要加一張表undo_log，不然會報錯，

CREATE TABLE `undo_log` ( `id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT ’主鍵’, `branch_id` bigint(20) NOT NULL COMMENT ’branch transaction id’, `xid` varchar(100) 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’, PRIMARY KEY (`id`), UNIQUE KEY `ux_undo_log` (`xid`,`branch_id`)) ENGINE=InnoDB AUTO_INCREMENT=9 DEFAULT CHARSET=utf8 COMMENT=’AT transaction mode undo table’;

2.4 創建推送配置文件 vim config.txt，是將文件中的配置推送到nacos中去。

vim config.txt

service.vgroupMapping.btb_tx_group=defaultstore.mode=dbstore.db.datasource=druidstore.db.dbType=mysqlstore.db.driverClassName=com.mysql.cj.jdbc.Driverstore.db.url=jdbc:mysql://172.0.0.1:3306/seata?useUnicode=truestore.db.user=rootstore.db.password=rootstore.db.minConn=5store.db.maxConn=30store.db.globalTable=global_tablestore.db.branchTable=branch_tablestore.db.queryLimit=100store.db.lockTable=lock_tablestore.db.maxWait=5000

注意btb_tx_group需要與客戶端保持一致,順便注意數據庫驅動，如果是8以上用我的這個驅動，5.7的用com.mysql.jdbc.Driver

2.5 創建推送腳本，因為執行腳本要在config.txt的下一層，所有加一層目錄

mkdir shcd shvim nacos-config.sh

內容如下：最好不要有任何的修改

#!/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:' optdo 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 ;; esacdone if [[ -z ${host} ]]; then host=localhostfiif [[ -z ${port} ]]; then port=8848fiif [[ -z ${group} ]]; then group='SEATA_GROUP'fiif [[ -z ${tenant} ]]; then tenant=''fiif [[ -z ${username} ]]; then username=''fiif [[ -z ${password} ]]; then password=''fi nacosAddr=$host:$portcontentType='content-type:application/json;charset=UTF-8' echo 'set nacosAddr=$nacosAddr'echo 'set group=$group' failCount=0tempLog=$(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=0for 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 ]]; thenecho ' Init nacos config finished, please start seata-server. 'elseecho ' init nacos config fail. 'fi

2.6 執行推送腳本，后面是nacos的ip地址，如果端口不是8848還需要加一個-p 8884你的端口

bash nacos-config.sh -h 127.0.0.1

2.7 創建容器，注意SEATA_IP如果是阿里云服務器需要寫外網ip

docker run -d --restart always --name seata-server -p 8091:8091 -e SEATA_IP=172.0.0.1 -e SEATA_CONFIG_NAME=file:/data/seata/registry -v /data/seata:/data/seata seataio/seata-server:1.3.0三 . 客戶端（也就是微服務，項目中使用seata）

3.1 pom.xml 引入依賴

<!-- seata分布式事務--><dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-alibaba-seata</artifactId> <exclusions><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>1.3.0</version></dependency>

注意這里一定要剔除原來自帶的 io.seata包，并且服務端和客戶端的包版本要一致。

3.2 配置項目配置文件

#seataseata.application-id=${spring.application.name}seata.tx-service-group=btb_tx_groupseata.config.type=nacosseata.config.nacos.server-addr=172.0.0.1:8848seata.config.nacos.group=SEATA_GROUPseata.registry.type=nacosseata.registry.nacos.application=seata-serverseata.registry.nacos.server-addr=172.0.0.1:8848seata.registry.nacos.group=SEATA_GROUP

注意：這里的btb_tx_group要跟服務端的vgroupMapping后面的key保持一致，

如：service.vgroupMapping.btb_tx_group=default

3.3 加入注解使用

@GlobalTransactional

擴展： 我用的是一個數據庫，執行報錯，說我缺少主鍵，于是我在表undo_log加了一個增的主鍵id，上面的創建undo_log表的sql是我加了id的，官方給的是沒有id的。請知曉?。。?！

問題：單數源是有報錯的，原因是因為我是一個數據庫，需要設置代理配置如下 ，根據自己實際情況是指配置文件，不然會報錯

#單數據源seata.enable-auto-data-source-proxy=true#多數據源seata.enable-auto-data-source-proxy=false

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