seata-spring-boot-start 1.3.0升级1.4.2全局事务失效解决版本现象解决原因源码

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我是靠谱客的博主文艺胡萝卜，最近开发中收集的这篇文章主要介绍seata-spring-boot-start 1.3.0升级1.4.2全局事务失效解决版本现象解决原因源码，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

版本

io.seata:seata-spring-boot-starter 1.3.0 升级1.4.2

现象

全局事务失效

解决

方案1. 添加注解@EnableAutoDataSourceProxy
方案2. 通过代码而非自动配置Datasource

原因

1.3.0中seata自动配置数据源代理没有检查是否存在Datasource bean
1.4.2中seata数据源自动配置需要检查存在datasource bean，如果datasource通过springboot自动配置机制注册，不能保证datasource在seata数据源自动配置之前完成配置。

源码

1.3.0

package io.seata.spring.boot.autoconfigure.SeataAutoConfiguration

@ComponentScan(basePackages = "io.seata.spring.boot.autoconfigure.properties")
@ConditionalOnProperty(prefix = StarterConstants.SEATA_PREFIX, name = "enabled", havingValue = "true", matchIfMissing = true)
@Configuration
@EnableConfigurationProperties({SeataProperties.class})
public class SeataAutoConfiguration {
    private static final Logger LOGGER = LoggerFactory.getLogger(SeataAutoConfiguration.class);

    @Bean(BEAN_NAME_SPRING_APPLICATION_CONTEXT_PROVIDER)
    @ConditionalOnMissingBean(name = {BEAN_NAME_SPRING_APPLICATION_CONTEXT_PROVIDER})
    public SpringApplicationContextProvider springApplicationContextProvider() {
        return new SpringApplicationContextProvider();
    }

    @Bean(BEAN_NAME_FAILURE_HANDLER)
    @ConditionalOnMissingBean(FailureHandler.class)
    public FailureHandler failureHandler() {
        return new DefaultFailureHandlerImpl();
    }

    @Bean
    @DependsOn({BEAN_NAME_SPRING_APPLICATION_CONTEXT_PROVIDER, BEAN_NAME_FAILURE_HANDLER})
    @ConditionalOnMissingBean(GlobalTransactionScanner.class)
    public GlobalTransactionScanner globalTransactionScanner(SeataProperties seataProperties, FailureHandler failureHandler) {
        if (LOGGER.isInfoEnabled()) {
            LOGGER.info("Automatically configure Seata");
        }
        return new GlobalTransactionScanner(seataProperties.getApplicationId(), seataProperties.getTxServiceGroup(), failureHandler);
    }

    @Bean(BEAN_NAME_SEATA_AUTO_DATA_SOURCE_PROXY_CREATOR)
    @ConditionalOnProperty(prefix = StarterConstants.SEATA_PREFIX, name = {"enableAutoDataSourceProxy", "enable-auto-data-source-proxy"}, havingValue = "true", matchIfMissing = true)
    @ConditionalOnMissingBean(SeataAutoDataSourceProxyCreator.class)
    public SeataAutoDataSourceProxyCreator seataAutoDataSourceProxyCreator(SeataProperties seataProperties) {
        return new SeataAutoDataSourceProxyCreator(seataProperties.isUseJdkProxy(),seataProperties.getExcludesForAutoProxying());
    }
}

1.4.2

io.seata.spring.boot.autoconfigure.SeataDataSourceAutoConfiguration

@ConditionalOnBean(DataSource.class)
@ConditionalOnExpression("${seata.enable:true} && ${seata.enableAutoDataSourceProxy:true} && ${seata.enable-auto-data-source-proxy:true}")
public class SeataDataSourceAutoConfiguration {

    /**
     * The bean seataDataSourceBeanPostProcessor.
     */
    @Bean(BEAN_NAME_SEATA_DATA_SOURCE_BEAN_POST_PROCESSOR)
    @ConditionalOnMissingBean(SeataDataSourceBeanPostProcessor.class)
    public SeataDataSourceBeanPostProcessor seataDataSourceBeanPostProcessor(SeataProperties seataProperties) {
        return new SeataDataSourceBeanPostProcessor(seataProperties.getExcludesForAutoProxying(), seataProperties.getDataSourceProxyMode());
    }

    /**
     * The bean seataAutoDataSourceProxyCreator.
     */
    @Bean(BEAN_NAME_SEATA_AUTO_DATA_SOURCE_PROXY_CREATOR)
    @ConditionalOnMissingBean(SeataAutoDataSourceProxyCreator.class)
    public SeataAutoDataSourceProxyCreator seataAutoDataSourceProxyCreator(SeataProperties seataProperties) {
        return new SeataAutoDataSourceProxyCreator(seataProperties.isUseJdkProxy(),
            seataProperties.getExcludesForAutoProxying(), seataProperties.getDataSourceProxyMode());
    }
}