zbb20181224 java,annotation 注解，自定义注解解析2

Java注解实践：自动初始化字段

最新推荐文章于 2025-09-12 18:08:49 发布

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最新推荐文章于 2025-09-12 18:08:49 发布

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文章标签： java runtime

原文链接：http://www.cnblogs.com/super-admin/p/10167208.html

InitField.java

package com.zbb.app.annotation;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Inherited;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@Documented
@Inherited
@Target({ ElementType.FIELD, ElementType.METHOD })
@Retention(RetentionPolicy.RUNTIME)
public @interface InitField {
public String value() default "";
}

Test.java

package com.zbb.app.annotation;

import java.lang.reflect.InvocationTargetException;

public class Test {
     public static void main(String[] args)
             throws IllegalAccessException, IllegalArgumentException, InvocationTargetException {
         User user = UserFactory.create();

//        User user = new User();
         System.out.println(user.getName());
         System.out.println(user.getAge());
     }
}

User.java

package com.zbb.app.annotation;

public class User {
private String name;
private String age;

    public String getName() {
         return name;
     }

    @InitField(value = "zbb")
     public void setName(String name) {
         this.name = name;
     }

    public String getAge() {
         return age;
     }

    @InitField(value = "123")
     public void setAge(String age) {
         this.age = age;
     }
}

转载于:https://www.cnblogs.com/super-admin/p/10167208.html