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LitJson报错记录 - 小紫苏
source link: https://www.cnblogs.com/littleperilla/p/16548598.html
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1.float转double报错
报错类型:
Max allowed object depth reached while trying to export from type System.Collections.Generic.List
序列化时候会遇到float和double互转问题;
注意这里double转float会导致精度丢失;
解决办法:
JsonMapper.cs中添加几行代码;
![image-20220803133006688](https://picsheet.oss-cn-hangzhou.aliyuncs.com/image-20220803133006688.png)
![image-20220803133027396](https://picsheet.oss-cn-hangzhou.aliyuncs.com/image-20220803133027396.png)
2.Dictionary中key为int时报错
报错类型:
InvalidCastException: Specified cast is not valid
原方法中Dictionary的key只支持(string)强转,int强转为string失败,会报错;
解决办法:
JsonMapper.cs中WriteValue方法修改
![image-20220803133402347](https://picsheet.oss-cn-hangzhou.aliyuncs.com/image-20220803133402347.png)
3.Dictionary中key为enum时报错
LitJson的字典不支持Key为枚举;
序列化不会出错,反序列化会报错,无法读取枚举类型;
解决办法:
修改JsonMapper.cs中ReadValue方法:
原本reader.Value被强转为string,无法识别出枚举;
下面将reader.Value转为Object;
![image-20220803200954674](https://picsheet.oss-cn-hangzhou.aliyuncs.com/image-20220803200954674.png)
4.Unity中LitJson类型扩展
添加向量Vector2、Vector3、Vector4;
添加四元素Quaternion、Color、Color32;
添加Bounds、Rect、RectOffset;
项目中加入UnityTypeBridge.cs类和JsonExtension.cs类;
public static class UnityTypeBindings
{
static bool registerd;
static UnityTypeBindings()
{
Register();
}
public static void Register()
{
if (registerd) return;
registerd = true;
// 注册Type类型的Exporter
JsonMapper.RegisterExporter<Type>((v, w) => { w.Write(v.Ful
JsonMapper.RegisterImporter<string, Type>((s) => { return T
// 注册Vector2类型的Exporter
Action<Vector2, JsonWriter> writeVector2 = (v, w) =>
{
w.WriteObjectStart();
w.WriteProperty("x", v.x);
w.WriteProperty("y", v.y);
w.WriteObjectEnd();
};
JsonMapper.RegisterExporter<Vector2>((v, w) => { writeVecto
// 注册Vector3类型的Exporter
Action<Vector3, JsonWriter> writeVector3 = (v, w) =>
{
w.WriteObjectStart();
w.WriteProperty("x", v.x);
w.WriteProperty("y", v.y);
w.WriteProperty("z", v.z);
w.WriteObjectEnd();
};
JsonMapper.RegisterExporter<Vector3>((v, w) => { writeVecto
// 注册Vector4类型的Exporter
JsonMapper.RegisterExporter<Vector4>((v, w) =>
{
w.WriteObjectStart();
w.WriteProperty("x", v.x);
w.WriteProperty("y", v.y);
w.WriteProperty("z", v.z);
w.WriteProperty("w", v.w);
w.WriteObjectEnd();
});
// 注册Quaternion类型的Exporter
JsonMapper.RegisterExporter<Quaternion>((v, w) =>
{
w.WriteObjectStart();
w.WriteProperty("x", v.x);
w.WriteProperty("y", v.y);
w.WriteProperty("z", v.z);
w.WriteProperty("w", v.w);
w.WriteObjectEnd();
});
// 注册Color类型的Exporter
JsonMapper.RegisterExporter<Color>((v, w) =>
{
w.WriteObjectStart();
w.WriteProperty("r", v.r);
w.WriteProperty("g", v.g);
w.WriteProperty("b", v.b);
w.WriteProperty("a", v.a);
w.WriteObjectEnd();
});
// 注册Color32类型的Exporter
JsonMapper.RegisterExporter<Color32>((v, w) =>
{
w.WriteObjectStart();
w.WriteProperty("r", v.r);
w.WriteProperty("g", v.g);
w.WriteProperty("b", v.b);
w.WriteProperty("a", v.a);
w.WriteObjectEnd();
});
// 注册Bounds类型的Exporter
JsonMapper.RegisterExporter<Bounds>((v, w) =>
{
w.WriteObjectStart();
w.WritePropertyName("center");
writeVector3(v.center, w);
w.WritePropertyName("size");
writeVector3(v.size, w);
w.WriteObjectEnd();
});
// 注册Rect类型的Exporter
JsonMapper.RegisterExporter<Rect>((v, w) =>
{
w.WriteObjectStart();
w.WriteProperty("x", v.x);
w.WriteProperty("y", v.y);
w.WriteProperty("width", v.width);
w.WriteProperty("height", v.height);
w.WriteObjectEnd();
});
// 注册RectOffset类型的Exporter
JsonMapper.RegisterExporter<RectOffset>((v, w) =>
{
w.WriteObjectStart();
w.WriteProperty("top", v.top);
w.WriteProperty("left", v.left);
w.WriteProperty("bottom", v.bottom);
w.WriteProperty("right", v.right);
w.WriteObjectEnd();
});
}
}
public static class JsonExtensions
{
public static void WriteProperty(this JsonWriter w, string name, long value)
{
w.WritePropertyName(name);
w.Write(value);
}
public static void WriteProperty(this JsonWriter w, string name, string value)
{
w.WritePropertyName(name);
w.Write(value);
}
public static void WriteProperty(this JsonWriter w, string name, bool value)
{
w.WritePropertyName(name);
w.Write(value);
}
public static void WriteProperty(this JsonWriter w, string name, double value)
{
w.WritePropertyName(name);
w.Write(value);
}
public static void WriteProperty(this JsonWriter w, string name, float value)
{
w.WritePropertyName(name);
w.Write(value);
}
}
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