spring泛形bean注入的2种方式

spring泛形bean注入的2种方式

• 通过类继承的方式自动依赖注入

  • extends 通过调用构造方法注入

  @Service("adminUserService")
  public class AdminUserServiceImpl extends ServiceImpl<AdminUserDao, AdminUser> implements AdminUserService {
      ...
  }
  

• @Configuration和@Bean注解实现注入

  • 配置类

  @Configuration
  public class DeleteCheckConfig {
  
      @Bean(value = "eduHardwareDeleteCheck")
      public DeleteCheck<EduHardware, EduHardwareDao> eduHardwareDeleteCheck() {
          return new DeleteCheck<EduHardware, EduHardwareDao>() {
          };
      }
  
  }
  

  • bean的使用

      @Autowired
      private DeleteCheck<EduCourse,EduCourseDao> deleteCheck;
  ----------------------------------------------------------------------------
      //删除前校验
      deleteCheck.check("course_System_Id", id, "课程体系底下存在未删除的课程!")