仓库地址

• reflections: https://github.com/ronmamo/reflections

      <dependency>
        <groupId>org.reflections</groupId>
        <artifactId>reflections</artifactId>
      </dependency>

如何扫描指定包下包含指定注解的类？

假设扫描@Mapper

Reflections reflections = new Reflections(
    new ConfigurationBuilder().setParallel(true).forPackages("packageName")
        .setScanners(Scanners.TypesAnnotated));
Set<Class<?>> classes = reflections.getTypesAnnotatedWith(Mapper.class);

如何扫描指定包下包含指定注解的方法？

假设扫描@Transaction

Reflections reflections = new Reflections(
    new ConfigurationBuilder().setParallel(true).forPackages("packageName")
        .setScanners(Scanners.MethodsAnnotated));
Set<Method> methods = reflections.getMethodsAnnotatedWith(Transaction.class);

如何扫描指定包下继承/实现某个类的子类？

假设扫描 ServiceImpl 子类

Reflections reflections = new Reflections(
    new ConfigurationBuilder().setParallel(true).forPackages("packageName")
        .setScanners(Scanners.SubTypes));
Set<Class<? extends ServiceImpl>> classes = reflections.getSubTypesOf(ServiceImpl.class);