[BUG]序列化对象中含有 File 对象就会抛 StackOverflowError 异常

[lyhu]

问题描述

序列化对象中含有 File 对象就会抛 StackOverflowError 异常

环境信息

请填写以下信息：

• OS信息： [e.g.：CentOS 8.4.2105 4Core 3.10GHz 16 GB]
• JDK信息： [e.g.：Openjdk 1.8.0_312]
• 版本信息：[e.g.：Fastjson2 2.0.3]

重现步骤

如何操作可以重现该问题：

1. 使用 SON.toJSONString 方法
2. 序列化对象中含有 File 对象就会抛 StackOverflowError 异常，

    public static void main(String[] args) {

        File file = new File("/User/xxx/JsonTest.java");
        Map<String, Object> map = new HashMap<>();
        map.put("file", file);
        System.out.println(JSON.toJSONString(map));
}

期待的正确结果

fastjson1 可以序列化

相关日志输出

Exception in thread "main" java.lang.StackOverflowError
at com.alibaba.fastjson2.writer.ObjectWriterProvider.getObjectWriter(ObjectWriterProvider.java:100)
at com.alibaba.fastjson2.JSONWriter.getObjectWriter(JSONWriter.java:379)
at com.alibaba.fastjson2.writer.FieldWriterObject.getObjectWriter(FieldWriterObject.java:49)
at com.alibaba.fastjson2.writer.ObjectWriter_1.write(Unknown Source)
at com.alibaba.fastjson2.writer.ObjectWriter_1.write(Unknown Source)
at com.alibaba.fastjson2.writer.ObjectWriter_1.write(Unknown Source)
at com.alibaba.fastjson2.writer.ObjectWriter_1.write(Unknown Source)
at com.alibaba.fastjson2.writer.ObjectWriter_1.write(Unknown Source)
at com.alibaba.fastjson2.writer.ObjectWriter_1.write(Unknown Source)
....

[wenshao]

https://github.com/alibaba/fastjson2/releases/tag/2.0.5
问题已修复，请用新版本

[lyhu]

3ks