springboot druid多数据源并实现分布式事务

可以通过以下步骤来实现Spring Boot Druid多数据源并实现分布式事务：

1. 引入相关依赖

在pom.xml文件中引入以下依赖：

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid-spring-boot-starter</artifactId>
    <version>1.1.10</version>
</dependency>

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

<dependency>
    <groupId>org.mybatis.spring.boot</groupId>
    <artifactId>mybatis-spring-boot-starter</artifactId>
    <version>2.1.3</version>
</dependency>

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

<dependency>
    <groupId>org.springframework.retry</groupId>
    <artifactId>spring-retry</artifactId>
    <version>1.3.1</version>
</dependency>

2. 配置Druid数据源

在application.yml文件中配置Druid数据源，例如：

spring:
  datasource:
    druid:
      default:
        url: jdbc:mysql://localhost:3306/db1
        username: root
        password: root
        driver-class-name: com.mysql.jdbc.Driver
      second:
        url: jdbc:mysql://localhost:3306/db2
        username: root
        password: root
        driver-class-name: com.mysql.jdbc.Driver

3. 配置MyBatis

在application.yml文件中配置MyBatis，例如：

mybatis:
  configuration:
    map-underscore-to-camel-case: true
  mapper-locations: classpath*:mapper/*.xml

4. 配置分布式事务

使用Spring Boot的事务管理器来管理分布式事务。在配置类中添加注解@EnableTransactionManagement来启用事务管理器，并使用注解@Transaction来标记需要进行事务管理的方法，例如：

@Configuration
@EnableTransactionManagement
public class MyBatisConfig {
    @Autowired
    private DataSource dataSource;

    @Bean
    public SqlSessionFactory sqlSessionFactory() throws Exception {
        SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
        sessionFactory.setDataSource(dataSource);
        sessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver()
                .getResources("classpath*:mapper/*.xml"));
        return sessionFactory.getObject();
    }

    @Bean
    public PlatformTransactionManager platformTransactionManager() {
        return new DataSourceTransactionManager(dataSource);
    }

    @Bean
    public RetryTemplate retryTemplate() {
        RetryTemplate retryTemplate = new RetryTemplate();

        SimpleRetryPolicy retryPolicy = new SimpleRetryPolicy();
        retryPolicy.setMaxAttempts(3);

        FixedBackOffPolicy backOffPolicy = new FixedBackOffPolicy();
        backOffPolicy.setBackOffPeriod(1000L);

        retryTemplate.setRetryPolicy(retryPolicy);
        retryTemplate.setBackOffPolicy(backOffPolicy);

        return retryTemplate;
    }
}

以上是Spring Boot Druid多数据源并实现分布式事务的步骤，希望能对你有所帮助！