升级jdk11后出现告警信息解决方案，An illegal reflective access operation has occurred

最新推荐文章于 2024-03-26 09:24:44 发布

原创最新推荐文章于 2024-03-26 09:24:44 发布 · 2.6k 阅读

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#java #spring

本文介绍了解决Java应用程序中出现的非法反射警告的方法。通过在启动类中加入特定代码，可以禁用这些警告，确保使用Java 11及更高版本运行程序时不会受到非法反射操作的影响。

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告警信息：

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.springframework.cglib.core.ReflectUtils (file:/D:/dev/m2/org/springframework/spring-core/5.1.9.RELEASE/spring-core-5.1.9.RELEASE.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)
WARNING: Please consider reporting this to the maintainers of org.springframework.cglib.core.ReflectUtils
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

解决方案：

启动类增加忽略非法反射告警：

package com.xxx.xxxx;

import java.lang.reflect.Field;
import java.lang.reflect.Method;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class XxxxApplication {

    public static void main(String[] args) {
        // 调用方法
        disableAccessWarnings(); // 忽略非法反射警告
        SpringApplication.run(XxxxApplication .class, args);
    }

    /**
     * 忽略非法反射警告 适用于jdk11
     */
    @SuppressWarnings("unchecked")
    public static void disableAccessWarnings() {
        try {
            Class unsafeClass = Class.forName("sun.misc.Unsafe");
            Field field = unsafeClass.getDeclaredField("theUnsafe");
            field.setAccessible(true);
            Object unsafe = field.get(null);

            Method putObjectVolatile =
                unsafeClass.getDeclaredMethod("putObjectVolatile", Object.class, long.class, Object.class);
            Method staticFieldOffset = unsafeClass.getDeclaredMethod("staticFieldOffset", Field.class);

            Class loggerClass = Class.forName("jdk.internal.module.IllegalAccessLogger");
            Field loggerField = loggerClass.getDeclaredField("logger");
            Long offset = (Long)staticFieldOffset.invoke(unsafe, loggerField);
            putObjectVolatile.invoke(unsafe, loggerClass, offset, null);
        } catch (Exception ignored) {
        }
    }
}

参考：忽略非法反射警告 An illegal reflective access operation has occurred_彦楠的博客-优快云博客