Package org.miaixz.bus.core.lang.reflect.lookup

Class MethodLookupFactory

java.lang.Object

org.miaixz.bus.core.lang.reflect.lookup.MethodLookupFactory

All Implemented Interfaces:

LookupFactory

public class MethodLookupFactory
extends Object
implements LookupFactory

jdk11中直接调用MethodHandles.lookup()获取到的MethodHandles.Lookup只能对接口类型才会权限获取方法的方法句柄MethodHandle。 如果是普通类型Class,需要使用jdk9开始提供的 MethodHandles#privateLookupIn(java.lang.Class, java.lang.invoke.MethodHandles.Lookup)方法. 参考：https://blog.csdn.net/u013202238/article/details/108687086

Since:

Java 17+

Author:

Kimi Liu

Constructor Summary

Constructors

Constructor	Description
MethodLookupFactory()	构造

Method Summary

Modifier and Type	Method	Description
MethodHandles.Lookup	lookup(Class<?> callerClass)	jdk8中如果直接调用MethodHandles.lookup()获取到的MethodHandles.Lookup在调用findSpecial和unreflectSpecial 时会出现权限不够问题，抛出"no private access for invokespecial"异常，因此针对JDK8及JDK9+分别封装lookup方法。

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

MethodLookupFactory

public MethodLookupFactory()

构造

Method Details

lookup

public MethodHandles.Lookup lookup(Class<?> callerClass)

Description copied from interface: LookupFactory

jdk8中如果直接调用MethodHandles.lookup()获取到的MethodHandles.Lookup在调用findSpecial和unreflectSpecial 时会出现权限不够问题，抛出"no private access for invokespecial"异常，因此针对JDK8及JDK9+分别封装lookup方法。

Specified by:

lookup in interface LookupFactory

Parameters:

callerClass - 被调用的类或接口

Returns:

MethodHandles.Lookup