反射方式读取注解信息

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package com.example.simpleframework.annotation;   import java.lang.annotation.Annotation; import java.lang.reflect.Field; import java.lang.reflect.Method;     public class AnnotationParse {     public static void main(String[] args) throws ClassNotFoundException {         parseTypeAnnotation();         parseFiledAnnotation();         parseMethod();     }       //解析类的注解     public static void parseTypeAnnotation() throws ClassNotFoundException {         Class clazz = Class.forName("com.example.simpleframework.annotation.Course");         //这里只是获取对象的注解，而不是方法和成员变量的注解         Annotation[] annotations = clazz.getAnnotations();         for (Annotation annotation : annotations) {             CourseInfoAnnotation courseInfoAnnotation = (CourseInfoAnnotation) annotation;             System.out.println("名字: " + courseInfoAnnotation.courseName());             System.out.println("标签: " + courseInfoAnnotation.courseTag());             System.out.println("描述: " + courseInfoAnnotation.courseProfile());             System.out.println("序号: " + courseInfoAnnotation.courseIndex());         }     }       //解析成员注解     public static void parseFiledAnnotation() throws ClassNotFoundException {         Class clazz = Class.forName("com.example.simpleframework.annotation.Course");         Field[] fields = clazz.getDeclaredFields();         for (Field field : fields) {             //判断是指定注解             boolean b = field.isAnnotationPresent(PersonInfoAnnotation.class);             if (b) {                 PersonInfoAnnotation personInfoAnnotation = field.getAnnotation(PersonInfoAnnotation.class);                 System.out.println("name=" + personInfoAnnotation.name());                 for (String s : personInfoAnnotation.language()) {                     System.out.println(s);                 }             }         }     }       //解析方法注解     public static void parseMethod() throws ClassNotFoundException {         Class clazz = Class.forName("com.example.simpleframework.annotation.Course");         Method[] methods = clazz.getDeclaredMethods();         for (Method method : methods) {             boolean b = method.isAnnotationPresent(CourseInfoAnnotation.class);             if (b) {                 CourseInfoAnnotation annotation = method.getAnnotation(CourseInfoAnnotation.class);                 System.out.println(annotation.courseName());             }         }     }   }