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[BUG]基本类型在Feature.NotWriteDefaultValue下表现不一致 #3186

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JintaoXie opened this issue Nov 28, 2024 · 3 comments
Open

[BUG]基本类型在Feature.NotWriteDefaultValue下表现不一致 #3186

JintaoXie opened this issue Nov 28, 2024 · 3 comments
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@JintaoXie
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JintaoXie commented Nov 28, 2024

问题描述

简要描述您碰到的问题。
toJSONString()Feature.NotWriteDefaultValue开启的情况下,float/double浮点数基本类型表现与int/long/boolean等类型表现不一致。
具体表现为:
在value等于默认值时,float/double类型会保留field,value为0.0,int/long/boolean不会保留field。

环境信息

请填写以下信息:

  • OS信息: Windows 10 19045.5131 / Intel(R) Core(TM) i5-9500 CPU @ 3.00GHz / 16.0 GB
  • JDK信息: Openjdk 21.0.2
  • 版本信息:Fastjson2 2.0.53

重现步骤

如何操作可以重现该问题:

  1. 使用 toJSONString() 方法
  2. 输入 List<Entry>,其中Entry class包含不同基本类型成员变量
  3. 结果 [{"doubleV":0.0,"floatV":0.0},{"doubleV":0.0,"floatV":0.0}]
public class Example {

    public static class Entry {
        public int intV;
        public long longV;
        public float floatV;
        public double doubleV;
        public boolean booleanV;
    }

    public static void main(String[] args) {
        List<Entry> entryList = List.of(new Entry(), new Entry());
        String msg = JSON.toJSONString(entryList, JSONWriter.Feature.NotWriteDefaultValue);
        System.out.println(msg);
    }
}

期待的正确结果

期望输出空字符串

相关日志输出

实际输出结果:
image

附加信息

如果你还有其他需要提供的信息,可以在这里填写(可以提供截图、视频等)。

@JintaoXie JintaoXie added the bug Something isn't working label Nov 28, 2024
@mek1986
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mek1986 commented Dec 2, 2024

我看看

@JintaoXie
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@oldratlee @tidezyc @wenshao @yang771036958 @m1ngyuan 麻烦大佬们关注下这个问题

@mek1986
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mek1986 commented Dec 12, 2024

@oldratlee @tidezyc @wenshao @yang771036958 @m1ngyuan 麻烦大佬们关注下这个问题

@wenshao 之前看了一下,还没理清逻辑,老大看一下

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