[BUG] ContextAutoTypeBeforeHandler 跨 ClassLoader 使用时 classCache 缓存会导致类转换异常

[AlbumenJ]

问题描述

ContextAutoTypeBeforeHandler 跨 ClassLoader 使用时 classCache 缓存会导致类转换异常

重现步骤

部分代码省略

public class ContextAutoTypeBeforeHandler
        implements JSONReader.AutoTypeBeforeHandler {
    final Map<String, Class> classCache = new ConcurrentHashMap<>(16, 0.75f, 1);

    @Override
    public Class<?> apply(String typeName, Class<?> expectClass, long features) {
        
            if (Arrays.binarySearch(acceptHashCodes, hash) >= 0) {
                Class clazz = classCache.get(typeName);

                if (clazz == null) {
                    clazz = loadClass(typeName);
                    if (clazz != null) {
                        Class origin = classCache.putIfAbsent(typeName, clazz);
                        if (origin != null) {
                            clazz = origin;
                        }
                    }
                }

                if (clazz != null) {
                    return clazz;
                }
            }
        }
    }
}

[wenshao]

https://github.com/alibaba/fastjson2/releases/tag/2.0.14
问题已修复，请用新版本