java - 动态加载类并获取带注释的类

Question

import com.this.class.Factory;
      public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {

        // Itearate over all @Factory annotated elements
        for (Element annotatedElement : roundEnv.getElementsAnnotatedWith(Factory.class)) {
            ...
        }
      }

当我在注释处理器中导入注释类时，这会起作用。但是动态加载注解类时就不行了

Class<?> Factorry = class.forName("com.this.class.Factory")
 public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {

        // Itearate over all @Factory annotated elements
        for (Element annotatedElement : roundEnv.getElementsAnnotatedWith(Factory.class)) {
            ...
        }
      }

当使用class.forName()加载类时如何将带注释的Factory.class传递给getElementsAnnotatedWith

Answer 1

您需要更改两件事:

1. 工厂变量应转换为注释:

   Class<Annotation> Factorry = (Class<Annotation>)class.forName("com.this.class.Factory")

2. 使用 Factory 变量而不是 Factory.class:

   roundEnv.getElementsAnnotatedWith(Factorry)