在 ASP.Net 核心中,所有大写 属性 名称的默认驼峰序列化问题为 JSON
Issue with Default camelCase serialization of All Caps property names to JSON in ASP.Net core
我对 .Net Core 的默认序列化 CamelCasing 行为有疑问,希望看看其他人是否遇到过同样的问题以及他们使用的解决方法。
属性 FOO12 或 FOO1 等名称被错误地序列化为
foO12 或 foO1
事实上,它们可能应该作为 foo12 或 foo1 完成。
我已经使用了添加以下属性的解决方法,但希望有人对此问题有更好的答案:
[Json属性(属性名称="foo12")]
Json.NET's CamelCasePropertyNamesContractResolver
uses a CamelCaseNamingStrategy
to convert the property names to camelcase. Internally it uses StringUtils.ToCamelCase
which doesn't convert a character to lowercase in case it is followed by a number, see link.
CamelCaseNamingStrategy
public class CamelCaseNamingStrategy : NamingStrategy
{
// ...
protected override string ResolvePropertyName(string name)
{
return StringUtils.ToCamelCase(name);
}
}
StringUtils
注意第二个 if
语句,其中没有检查数字。
internal static class StringUtils
{
public static string ToCamelCase(string s)
{
if (!string.IsNullOrEmpty(s) && char.IsUpper(s[0]))
{
char[] array = s.ToCharArray();
for (int i = 0; i < array.Length && (i != 1 || char.IsUpper(array[i])); i++)
{
bool flag = i + 1 < array.Length;
if ((i > 0 & flag) && !char.IsUpper(array[i + 1])) // << Missing check for a number.
{
break;
}
char c = char.ToLower(array[i], CultureInfo.InvariantCulture);
array[i] = c;
}
return new string(array);
}
return s;
}
}
您可以实施 自定义 NamingStrategy
来实施此缺失检查,如下所示。
class CustomCamelCaseNamingStrategy : CamelCaseNamingStrategy
{
protected override String ResolvePropertyName(String propertyName)
{
return this.toCamelCase(propertyName);
}
private string toCamelCase(string s)
{
if (!string.IsNullOrEmpty(s) && char.IsUpper(s[0]))
{
char[] array = s.ToCharArray();
for (int i = 0; i < array.Length && (i != 1 || char.IsUpper(array[i])); i++)
{
bool flag = i + 1 < array.Length;
if ((i > 0 & flag) && !char.IsUpper(array[i + 1]) && !char.IsNumber(array[i + 1]))
{
break;
}
char c = char.ToLower(array[i], CultureInfo.InvariantCulture);
array[i] = c;
}
return new string(array);
}
return s;
}
}
在 ConfigureServices
中,您将此自定义 NamingStrategy
分配给 CamelCasePropertyNamesContractResolver
。
无需实现完整的自定义 ContractResolver
.
(当使用默认值 CamelCaseNamingStrategy
时,CamelCasePropertyNamesContractResolver
将属性 ProcessDictionaryKeys
和 OverrideSpecifiedNames
设置为 True
,因此我们保留此行为。)
services
.AddMvc()
.AddJsonOptions(options =>
options.SerializerSettings.ContractResolver =
new CamelCasePropertyNamesContractResolver() {
NamingStrategy = new CustomCamelCaseNamingStrategy() {
ProcessDictionaryKeys = true,
OverrideSpecifiedNames = true
}});
我对 .Net Core 的默认序列化 CamelCasing 行为有疑问,希望看看其他人是否遇到过同样的问题以及他们使用的解决方法。
属性 FOO12 或 FOO1 等名称被错误地序列化为
foO12 或 foO1
事实上,它们可能应该作为 foo12 或 foo1 完成。
我已经使用了添加以下属性的解决方法,但希望有人对此问题有更好的答案:
[Json属性(属性名称="foo12")]
Json.NET's CamelCasePropertyNamesContractResolver
uses a CamelCaseNamingStrategy
to convert the property names to camelcase. Internally it uses StringUtils.ToCamelCase
which doesn't convert a character to lowercase in case it is followed by a number, see link.
CamelCaseNamingStrategy
public class CamelCaseNamingStrategy : NamingStrategy
{
// ...
protected override string ResolvePropertyName(string name)
{
return StringUtils.ToCamelCase(name);
}
}
StringUtils
注意第二个 if
语句,其中没有检查数字。
internal static class StringUtils
{
public static string ToCamelCase(string s)
{
if (!string.IsNullOrEmpty(s) && char.IsUpper(s[0]))
{
char[] array = s.ToCharArray();
for (int i = 0; i < array.Length && (i != 1 || char.IsUpper(array[i])); i++)
{
bool flag = i + 1 < array.Length;
if ((i > 0 & flag) && !char.IsUpper(array[i + 1])) // << Missing check for a number.
{
break;
}
char c = char.ToLower(array[i], CultureInfo.InvariantCulture);
array[i] = c;
}
return new string(array);
}
return s;
}
}
您可以实施 自定义 NamingStrategy
来实施此缺失检查,如下所示。
class CustomCamelCaseNamingStrategy : CamelCaseNamingStrategy
{
protected override String ResolvePropertyName(String propertyName)
{
return this.toCamelCase(propertyName);
}
private string toCamelCase(string s)
{
if (!string.IsNullOrEmpty(s) && char.IsUpper(s[0]))
{
char[] array = s.ToCharArray();
for (int i = 0; i < array.Length && (i != 1 || char.IsUpper(array[i])); i++)
{
bool flag = i + 1 < array.Length;
if ((i > 0 & flag) && !char.IsUpper(array[i + 1]) && !char.IsNumber(array[i + 1]))
{
break;
}
char c = char.ToLower(array[i], CultureInfo.InvariantCulture);
array[i] = c;
}
return new string(array);
}
return s;
}
}
在 ConfigureServices
中,您将此自定义 NamingStrategy
分配给 CamelCasePropertyNamesContractResolver
。
无需实现完整的自定义 ContractResolver
.
(当使用默认值 CamelCaseNamingStrategy
时,CamelCasePropertyNamesContractResolver
将属性 ProcessDictionaryKeys
和 OverrideSpecifiedNames
设置为 True
,因此我们保留此行为。)
services
.AddMvc()
.AddJsonOptions(options =>
options.SerializerSettings.ContractResolver =
new CamelCasePropertyNamesContractResolver() {
NamingStrategy = new CustomCamelCaseNamingStrategy() {
ProcessDictionaryKeys = true,
OverrideSpecifiedNames = true
}});