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Demo04.java
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53 lines (46 loc) · 1.59 KB
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package com.zyj.reflect;
import com.zyj.bean.User;
import java.lang.reflect.Method;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.List;
import java.util.Map;
/**
* 版权声明：CopyRight (c) 2018 ucarinc. All Rights Reserved.
*
* @author : 张勇杰
* @date : 2018/11/25 12:34
* @Version : v1.0
* @description
**/
public class Demo04 {
public void test01(Map<String,User> map, List<User> list){
System.out.println("Demo04.test01");
}
public Map<Integer,User> test02(){
System.out.println("Demo04.test02");
return null;
}
public static void main(String[] args) throws NoSuchMethodException {
Method m1 = Demo04.class.getMethod("test01",Map.class,List.class);
Type []types = m1.getGenericParameterTypes();
for(Type paramType:types){
System.out.println("#"+paramType);
if(paramType instanceof ParameterizedType){
Type[] genericTypes = ((ParameterizedType) paramType).getActualTypeArguments();
for(Type genericType:genericTypes){
System.out.println("泛型类型"+genericType);
}
}
}
Method m2 = Demo04.class.getMethod("test02");
Type returnType = m2.getGenericReturnType();
System.out.println(returnType);
if(returnType instanceof ParameterizedType){
Type[] genericTypes = ((ParameterizedType) returnType).getActualTypeArguments();
for(Type t:genericTypes){
System.out.println("--"+t);
}
}
}
}