傳List.class即可,泛型參數在編譯后會被擦除掉，無論List里面是String還是什么別的東西都不會影響獲取到那個method，在invoke的時候傳的參數對不上的話才會產生異常

//Test.java

import java.lang.reflect.InvocationTargetException;

import java.lang.reflect.Method;

import java.util.List;

import java.util.stream.Collectors;

import java.util.stream.Stream;

public class Test {

public static void main(String[] args) throws InterruptedException, NoSuchMethodException, InvocationTargetException, IllegalAccessException {

final Class tmpClass = Tmp.class;

final Method printStrings = tmpClass.getDeclaredMethod("printStrings", List.class);

List strings = Stream.iterate(1, t -> t + 1).limit(10).map(Object::toString).collect(Collectors.toList());

List integers = Stream.iterate(1, t -> t + 1).limit(10).collect(Collectors.toList());

printStrings.invoke(new Tmp(), strings);//正常執行，打出1~10

printStrings.invoke(new Tmp(), integers);//產生異常

}

}

class Tmp {

void printStrings(List strings) {

strings.forEach(System.out::println);

}

}

輸出

1

2

3

4

5

6

7

8

9

10

Exception in thread "main" Disconnected from the target VM, address: '127.0.0.1:56752', transport: 'socket'

java.lang.reflect.InvocationTargetException

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at Test.main(Test.java:17)

Caused by: java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.String

at java.util.ArrayList.forEach(ArrayList.java:1249)

at Tmp.printStrings(Test.java:23)

... 5 more

Process finished with exit code 1

總結

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