通过反射获取父类泛型的类型

如有以下类:

父类:

public class Person<T> {
	private String name;
	private int age;
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	
}

子类:

public class Student extends Person<Student> {
	private String num;

	public String getNum() {
		return num;
	}

	public void setNum(String num) {
		this.num = num;
	};
	
}

通过反射获取父类泛型的类型方法:

Class <T> entityClass = (Class <T>) ((ParameterizedType) getClass().getGenericSuperclass()).getActualTypeArguments()[0]; 

详细获取方式:

@Test
	@SuppressWarnings("rawtypes")
	public void testGetSuper(){
		Student student = new Student();
		Class clazz = student.getClass();
		//获取该类的父类
		System.out.println("该类的父类:"+clazz.getSuperclass());
		//获得带有泛型的父类
		Type type = clazz.getGenericSuperclass();
		System.out.println("带泛型的父类:"+type);
		// 获取参数化类型(即泛型)
		ParameterizedType p = (ParameterizedType) type;
		//泛型可能是多个,获取自己需要的
		Class clazz2 = (Class) p.getActualTypeArguments()[0];
		System.out.println("父类泛型的类型:"+clazz2);
	}

输出结果为:

该类的父类:class com.test.bean.Person

带泛型的父类:com.test.bean.Person<com.test.bean.Student>

父类泛型的类型:class com.test.bean.Student

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转载自1960370817.iteye.com/blog/2360723
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