watch 命令使用 json 格式时，容易出现 java.lang.StackOverflowError: null

[hengyunabc]

原因是 fastjson2 序列化时死循环了：

2025-12-05 16:31:18 [detailAsyncActivityThread-1518] ERROR c.taobao.arthas.core.view.ObjectView -ObjectView draw error, object class: class java.util.ArrayList
java.lang.StackOverflowError: null

2025-12-05 16:53:39 [detailAsyncActivityThread-1518] ERROR c.taobao.arthas.core.view.ObjectView -ObjectView draw error, object class: class com.xxx.SkuV3DisplayReq
java.lang.StackOverflowError: null
        at com.alibaba.arthas.deps.com.alibaba.fastjson2.writer.ObjectWriterAdapter.hasFilter(ObjectWriterAdapter.java:132)
        at com.alibaba.arthas.deps.com.alibaba.fastjson2.writer.ObjectWriter3.write(ObjectWriter3.java:62)
        at com.alibaba.arthas.deps.com.alibaba.fastjson2.writer.OWG_10_3_ForestDataReaderProxy.write(Unknown Source)
        at com.alibaba.arthas.deps.com.alibaba.fastjson2.writer.FieldWriterObject.writeInternal(FieldWriterObject.java:377)
        at com.alibaba.arthas.deps.com.alibaba.fastjson2.writer.FieldWriterObject.write(FieldWriterObject.java:248)
        at com.alibaba.arthas.deps.com.alibaba.fastjson2.writer.ObjectWriter6.write(ObjectWriter6.java:79)
        at com.alibaba.arthas.deps.com.alibaba.fastjson2.writer.OWG_12_6_BasicDomainReadServiceImpl.write(Unknown Source)

[jujn]

方便提供下相关类吗（如 SkuV3DisplayReq）？看起来像是 ObjectView#draw 方法中 JSON.toJSONString 中未开启 ReferenceDetection 特性的问题。

看到这里有一处提交升级了 fastjson 的版本：

而在 fastjson 1.x 中 ReferenceDetection 是默认开启的；在 2.x 中则默认关闭（参见 fastjson2 文档）：

如果可能的话，我可以开一个 pr 协助解决这个问题（以及因升级 fastjson 导致的 ReferenceDetection 相关问题）

[hengyunabc]

这个类比较复杂，即使是开启了ReferenceDetection 也是有问题。

                JSONWriter.Context context = JSONFactory.createWriteContext();
                context.config(JSONWriter.Feature.FieldBased, true);
                context.config(JSONWriter.Feature.IgnoreErrorGetter, true);
                context.config(JSONWriter.Feature.ReferenceDetection, true);
                context.config(JSONWriter.Feature.IgnoreNonFieldGetter, true);
                context.config(JSONWriter.Feature.WriteNonStringKeyAsString, true);
                return JSON.toJSONString(object, context);