第一步：搭建Nacos
参考官网：https://nacos.io/zh-cn/docs/quick-start.html
windows环境：
1.下载nacos
下载地址：https://github.com/alibaba/nacos/releases
我选择的是1.4.0版本
2.启动服务
以单机模式模式启动：startup.cmd -m standalone
当然也可以修改startup.cmd文件直接点击启动
这样便显示启动nacos成功。
访问：http://localhost:8848/nacos/
出现下图：
nacos的默认账号密码是：nacos/nacos
第二步：搭建seata环境
1.下载seata
下载地址：https://github.com/seata/seata/releases
我下载的是1.4.0版本
2.搭建数据库
seata-server
搭建seata应用前，需要创建一个数据库。数据库名为: seata
但是从seata1.0.0版本(好像是这个)开始，不再自带数据库脚本。因此需要下载source文件，或者到github上找。
数据库脚本地址：https://github.com/seata/seata/blob/develop/script/server/db/mysql.sql。
-- -------------------------------- 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;
seata-server的数据库最终是这样：
seata-client
seata-client为自己测试的服务，可自由发挥。但是每个事务的数据库中都要添加一张undo_log表。
脚本地址是：https://github.com/seata/seata/blob/develop/script/client/at/db/mysql.sql
-- 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(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', UNIQUE KEY `ux_undo_log` (`xid`, `branch_id`) ) ENGINE = InnoDB AUTO_INCREMENT = 1 DEFAULT CHARSET = utf8 COMMENT ='AT transaction mode undo table';
业务表参考：
# 订单库 create database seata_order; # 订单表 CREATE TABLE t_order( `id` bigint(11) NOT NULL AUTO_INCREMENT PRIMARY KEY, `user_id` bigint(20) DEFAULT NULL COMMENT '用户id', `product_id` bigint(11) DEFAULT NULL COMMENT '产品id', `count` int(11) DEFAULT NULL COMMENT '数量', `money` decimal(11,0) DEFAULT NULL COMMENT '金额', `status` int(1) DEFAULT NULL COMMENT '订单状态：0：创建中1：已完结' )ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARACTER SET=utf8; #库存库 create database seata_storage; CREATE TABLE t_storage( `id` bigint(11) NOT NULL AUTO_INCREMENT PRIMARY KEY, `product_id` bigint(11) DEFAULT NULL COMMENT '产品id', `total` int(11) DEFAULT NULL COMMENT '总库存', `used` int(11) DEFAULT NULL COMMENT '已用库存', `residue` int(11) DEFAULT NULL COMMENT '剩余库存' )ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARACTER SET=utf8; insert into seata_storage.t_storage(`id`,`product_id`,`total`,`used`,`residue`) values('1','1','100','0','100'); #账户库 create database seata_account; CREATE TABLE t_account( `id` bigint(11) NOT NULL AUTO_INCREMENT PRIMARY KEY COMMENT 'id', `user_id` bigint(11) DEFAULT NULL COMMENT '用户id', `total` DECIMAL(10,0) DEFAULT NULL COMMENT '总额度', `used` DECIMAL(10,0) DEFAULT NULL COMMENT '已用余额', `residue` DECIMAL(10,0) DEFAULT NULL COMMENT '剩余可用额度' )ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARACTER SET=utf8; insert into seata_account.t_account(`id`,`user_id`,`total`,`used`,`residue`) values('1','1','1000','0','1000');
执行完脚本的效果图：
3.修改文件配置
config.txt
下载地址：https://github.com/seata/seata/blob/develop/script/config-center/config.txt
修改
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.my_test_tx_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.tableMetaCheckerInterval=60000 client.rm.sqlParserType=druid client.rm.reportSuccessEnable=false client.rm.sagaBranchRegisterEnable=false client.tm.commitRetryCount=5 client.tm.rollbackRetryCount=5 client.tm.defaultGlobalTransactionTimeout=60000 client.tm.degradeCheck=false client.tm.degradeCheckAllowTimes=10 client.tm.degradeCheckPeriod=2000 store.mode=file store.publicKey= 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.jdbc.Driver store.db.url=jdbc:mysql://127.0.0.1:3306/seata?useUnicode=true&rewriteBatchedStatements=true store.db.user=username store.db.password=password 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 store.redis.mode=single store.redis.single.host=127.0.0.1 store.redis.single.port=6379 store.redis.maxConn=10 store.redis.minConn=1 store.redis.maxTotal=100 store.redis.database=0 store.redis.password= store.redis.queryLimit=100 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 client.undo.onlyCareUpdateColumns=true server.undo.logSaveDays=7 server.undo.logDeletePeriod=86400000 client.undo.logTable=undo_log client.undo.compress.enable=true client.undo.compress.type=zip client.undo.compress.threshold=64k log.exceptionRate=100 transport.serialization=seata transport.compressor=none metrics.enabled=false metrics.registryType=compact metrics.exporterList=prometheus metrics.exporterPrometheusPort=9898
将本文件复制到seata根目录下：
nacos-config.sh
下载地址：https://github.com/seata/seata/blob/develop/script/config-center/nacos/nacos-config.sh
#!/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 urlencode() { for ((i=0; i < ${#1}; i++)) do char="${1:$i:1}" case $char in [a-zA-Z0-9.~_-]) printf $char ;; *) printf '%%%02X' "'$char" ;; 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 if [[ -z ${username} ]]; then username="" fi if [[ -z ${password} ]]; then password="" fi nacosAddr=$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=$(urlencode $1)&group=$group&content=$(urlencode $2)&tenant=$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
将该文件复制到seata/conf文件夹下面：
添加config.txt的配置到nacos
注意这里要将config.txt的配置添加到nacos上面，打开git bash here
执行命令：sh nacos-config.sh -h 127.0.0.1
刷新nacos，可以看到config.txt的配置注册到nacos上面了：
file.conf:
找到D:developserverseataseata-server-1.4.0seataconf位置下的file.conf文件修改。必须修改的地方有：
store.mode="db"
store.db.url= "jdbc:mysql://127.0.0.1:3306/seata"
store.db.user = "root"
store.db.password = "123456"
## transaction log store, only used in seata-server store { ## store mode: file、db、redis mode = "db" ## 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.jdbc.Driver" url = "jdbc:mysql://127.0.0.1:3306/seata" user = "root" password = "123456" minConn = 5 maxConn = 100 globalTable = "global_table" branchTable = "branch_table" lockTable = "lock_table" queryLimit = 100 maxWait = 5000 } ## redis store property redis { host = "127.0.0.1" port = "6379" password = "" database = "0" minConn = 1 maxConn = 10 maxTotal = 100 queryLimit = 100 } }
registry.conf
同样找到D:developserverseataseata-server-1.4.0seataconf位置下的file.conf文件修改。必须修改的地方有：
registry.type="nacos" #因为我用的注册中心是nacos，所以改为nacos
registry.nacos.username= "nacos"
registry.nacos.password= "nacos"
registry.config.type= "nacos"
registry { # file 、nacos 、eureka、redis、zk、consul、etcd3、sofa type = "nacos" loadBalance = "RandomLoadBalance" loadBalanceVirtualNodes = 10 nacos { application = "seata-server" serverAddr = "127.0.0.1:8848" group = "DEFAULT_GROUP" namespace = "" 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" } 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 = "" group = "SEATA_GROUP" username = "" password = "" } consul { serverAddr = "127.0.0.1:8500" } apollo { appId = "seata-server" apolloMeta = "http://192.168.1.204:8801" namespace = "application" apolloAccesskeySecret = "" } zk { serverAddr = "127.0.0.1:2181" sessionTimeout = 6000 connectTimeout = 2000 username = "" password = "" } etcd3 { serverAddr = "http://localhost:2379" } file { name = "file.conf" } }
4.启动服务
windows:
直接双击seata-server.bat：
成功启动后，可以在nacos上面看到：
第三步：搭建客户端服务
关于服务端的代码太多，就贴出关键部分的。要想知道全部代码，可以参考我的github: https://github.com/BestLmc/maomao/tree/master/seata-orader-service2001
OrderService
pom:
<dependencies> <!--nacos--> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId> </dependency> <dependency> <groupId>com.alibaba.nacos</groupId> <artifactId>nacos-client</artifactId> <version>1.3.2</version> </dependency> <!--seata--> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-alibaba-seata</artifactId> <exclusions> <exclusion> <artifactId>seata-all</artifactId> <groupId>io.seata</groupId> </exclusion> </exclusions> </dependency> <dependency> <groupId>io.seata</groupId> <artifactId>seata-all</artifactId> <version>1.4.0</version> </dependency> <!--feign--> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-openfeign</artifactId> </dependency> <!--web-actuator--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> <!--mysql-druid--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.37</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>2.0.0</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency> </dependencies>
application.yml
server: port: 2001 spring: application: name: seata-order-service cloud: # alibaba: # seata: # #自定义事务组名称需要与seata-server中的对应 # tx-service-group: default nacos: discovery: server-addr: localhost:8848 datasource: driver-class-name: com.mysql.jdbc.Driver url: jdbc:mysql://localhost:3306/seata_order username: root password: 123456 seata: enabled: true application-id: ${spring.application.name} enable-auto-data-source-proxy: false tx-service-group: SEATA_GROUP service: vgroupMapping: SEATA_GROUP: default config: type: nacos nacos: server-addr: 127.0.0.1:8848 group : "SEATA_GROUP" namespace: "" username: "nacos" password: "nacos" registry: type: nacos nacos: server-addr: 127.0.0.1:8848 namespace: "" group: SEATA_GROUP cluster: default feign: hystrix: enabled: false logging: level: io: seata: info mybatis: mapperLocations: classpath:mapper/*.xml
OrderServiceImpl
/** * 创建订单->调用库存服务扣减库存->调用账户服务扣减账户余额->修改订单状态 * 简单说：下订单->扣库存->减余额->改状态 */ @Override @GlobalTransactional(name = "fsp-create-order",rollbackFor = Exception.class) public void create(Order order) { log.info("----->开始新建订单"); //1 新建订单 orderDao.create(order); //2 扣减库存 log.info("----->订单微服务开始调用库存，做扣减Count"); storageService.decrease(order.getProductId(),order.getCount()); log.info("----->订单微服务开始调用库存，做扣减end"); //3 扣减账户 log.info("----->订单微服务开始调用账户，做扣减Money"); accountService.decrease(order.getUserId(),order.getMoney()); log.info("----->订单微服务开始调用账户，做扣减end"); //4 修改订单状态，从零到1,1代表已经完成 log.info("----->修改订单状态开始"); orderDao.update(order.getUserId(),0); log.info("----->修改订单状态结束"); log.info("----->下订单结束了，O(∩_∩)O哈哈~"); }
启动服务
启动相关服务，如图：
注意：由于测试的时候2002和2003的端口被占用了，因此就改为其他的端口测试。
接下来就可以进行seata的事务测试了！