1.4.2 Seata单机启动(以file方式启动)

Posted 2022-12-07 _DiMinisH

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Seata 单机启动

1. 下载Seata 1.4.2
2. 文件方式直接启动seata
3. 测试seata
4. 总结

1. 下载Seata 1.4.2

Seata下载连接

下载完后解压
seata目录如下

2. 文件方式直接启动seata

默认情况下
用jdk1.8直接可以启动seata
其他版本的博主没有试过

进入bin目录
双击.bat文件即可

1. jdk8启动

直接双击.bat文件即可

启动成功

2. jdk17启动

编辑.bat文件, 用记事本打开
修改 %JAVACMD%

将原来的替换为

%JAVACMD% %JAVA_OPTS% -server --add-opens=java.base/java.lang=ALL-UNNAMED -Xmx2048m -Xms2048m -Xmn1024m -Xss512k -XX:SurvivorRatio=10 -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=256m -XX:MaxDirectMemorySize=1024m -XX:-OmitStackTraceInFastThrow -XX:-UseAdaptiveSizePolicy -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath="%BASEDIR%"/logs/java_heapdump.hprof -XX:+DisableExplicitGC  -Xlog:gc:"%BASEDIR%"/logs/seata_gc.log -verbose:gc -Dio.netty.leakDetectionLevel=advanced -Dlogback.color.disable-for-bat=true -classpath %CLASSPATH% -Dapp.name="seata-server" -Dapp.repo="%REPO%" -Dapp.home="%BASEDIR%" -Dbasedir="%BASEDIR%" io.seata.server.Server %CMD_LINE_ARGS%

双击启动

3. 闪退问题

如果出现闪退, 可能是jdk版本不对, 检查一下jdk版本, jdk17启动要改配置

4. 其他配置

见下面的测试

3. 测试seata

订单服务
库存服务
订单服务通过open-feign调用库存服务
在订单服务抛出异常, 检查能不能进行回滚操作

1. 版本

父工程pom文件

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

    <artifactId>seata-sample</artifactId>
    <groupId>org.example</groupId>
    <version>1.0-SNAPSHOT</version>
    <modelVersion>4.0.0</modelVersion>

    <properties>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
        <spring.boot.version>2.6.6</spring.boot.version>
        <spring.framework.version>5.3.18</spring.framework.version>
        <spring.cloud.version>2021.0.2-SNAPSHOT</spring.cloud.version>
        <spring.cloud.alibaba.version>2021.0.1.0</spring.cloud.alibaba.version>
        <spring.data.version>2021.0.2-SNAPSHOT</spring.data.version>
    </properties>


    <dependencyManagement>
        <!--        Spring Boot-->
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>$spring.boot.version</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-framework-bom</artifactId>
                <version>$spring.framework.version</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <!--        Spring Cloud-->
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>$spring.cloud.version</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <!--        Spring Cloud Alibaba-->
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>$spring.cloud.alibaba.version</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <!--        Spring Data-->
            <dependency>
                <groupId>org.springframework.data</groupId>
                <artifactId>spring-data-bom</artifactId>
                <version>$spring.data.version</version>
                <scope>import</scope>
                <type>pom</type>
            </dependency>

        </dependencies>
    </dependencyManagement>

    <repositories>
        <repository>
            <id>spring-milestone</id>
            <name>Spring Milestone Repository</name>
            <url>https://repo.spring.io/milestone</url>
        </repository>

        <repository>
            <id>spring-snapshot</id>
            <name>Spring Snapshot Repository</name>
            <url>https://repo.spring.io/snapshot</url>
        </repository>
    </repositories>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>$spring.boot.version</version>
            </plugin>
        </plugins>
    </build>

</project>

2. 总体目录

目录
子工程依赖

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>seata-sample</artifactId>
        <groupId>org.example</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>seata-stock</artifactId>

    <properties>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
    </properties>

    <dependencies>

        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-jpa</artifactId>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!--        nacos注册中心服务发现-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>

        <!--        feign-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-loadbalancer</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>

        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-seata</artifactId>
        </dependency>

        <dependency>
            <groupId>io.seata</groupId>
            <artifactId>seata-spring-boot-starter</artifactId>
            <version>1.4.2</version>
        </dependency>


    </dependencies>

</project>

3. 配置

(1). application.properties配置

在每一个服务中, 对配置seata所需要的信息

订单服务的配置

server.port=8001
spring.application.name=order

spring.cloud.nacos.discovery.server-addr=localhost:8848
spring.cloud.nacos.discovery.namespace=public
spring.cloud.nacos.discovery.service=$spring.application.name
spring.cloud.nacos.discovery.group=DEFAULT_GROUP

spring.jpa.hibernate.ddl-auto=update
spring.datasource.url=jdbc:mysql://localhost:3306/seata_order?useUnicode=true&characterEncoding=utf8
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.jpa.show-sql=true
spring.jpa.open-in-view=true

# seata 配置
seata.tx-service-group=my-tx-group
seata.service.vgroup-mapping.my-tx-group=seata-server
seata.service.grouplist.seata-server=127.0.0.1:8091
seata.enabled=true

库存服务配置

server.port=8003
spring.application.name=stock

spring.cloud.nacos.discovery.server-addr=localhost:8848
spring.cloud.nacos.discovery.namespace=public
spring.cloud.nacos.discovery.service=$spring.application.name
spring.cloud.nacos.discovery.group=DEFAULT_GROUP

spring.jpa.hibernate.ddl-auto=update
spring.datasource.url=jdbc:mysql://localhost:3306/seata_storage?useUnicode=true&characterEncoding=utf8
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.jpa.show-sql=true

# seata 配置
seata.tx-service-group=my-tx-group
seata.service.vgroup-mapping.my-tx-group=seata-server
seata.service.grouplist.seata-server=127.0.0.1:8091
seata.enabled=true

(2). 添加注解@EnableAutoDataSourceProxy

在两个服务的启动类似添加@EnableAutoDataSourceProxy注解

(3). 添加启动参数

打开启动配置
添加参数

--add-opens=java.base/java.lang.reflect=ALL-UNNAMED --add-opens=java.base/java.lang=ALL-UNNAMED

如果不添加会出现如下错误

2022-04-10 20:20:22.049  WARN 22636 --- [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'globalTransactionScanner' defined in class path resource [io/seata/spring/boot/autoconfigure/SeataAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [io.seata.spring.annotation.GlobalTransactionScanner]: Factory method 'globalTransactionScanner' threw exception; nested exception is java.lang.ExceptionInInitializerError
2022-04-10 20:20:22.057  INFO 22636 --- [           main] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2022-04-10 20:20:22.075 ERROR 22636 --- [           main] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'globalTransactionScanner' defined in class path resource [io/seata/spring/boot/autoconfigure/SeataAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [io.seata.spring.annotation.GlobalTransactionScanner]: Factory method 'globalTransactionScanner' threw exception; nested exception is java.lang.ExceptionInInitializerError
	at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:658) ~[spring-beans-5.3.18.jar:5.3.18]
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:638) ~[spring-beans-5.3.18.jar:5.3.18]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352) ~[spring-beans-5.3.18.jar:以上是关于1.4.2 Seata单机启动(以file方式启动)的主要内容，如果未能解决你的问题，请参考以下文章 
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