spring-boot:自动配置事务管理器

Question

好像我遗漏了一些东西:自动注入(inject)数据源有效，但注入(inject) DataSourceTransactionManager 失败。

依赖项:

<parent>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-parent</artifactId>
  <version>1.2.1.RELEASE</version>
</parent>
<dependencies>
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
  </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-jdbc</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <dependency>
        <groupId>com.h2database</groupId>
        <artifactId>h2</artifactId>
    </dependency>
</dependencies>

代码:

@SpringBootApplication
public class MainApplication {

  @Autowired
  private DataSource dataSource;

  // this fails
  @Autowired
  private DataSourceTransactionManager transactionManager;

  public static void main(String... args) {
    SpringApplication.run(MainApplication.class, args);
  }
}

我希望 DataSourceTransactionManagerAutoConfiguration 会处理它，但它没有。有什么线索吗？

示例在 github 上: https://github.com/jangalinski/springboot-playground

Answer 1

Spring Boot 正在注册 PlatformTransactionManager bean，而您正在尝试注入(inject) DataSourceTransactionManager .如果您要更改为适当的类(class)，它将开箱即用:

@Autowired
private PlatformTransactionManager transactionManager;