如何在 .NET Core 3.1 或 .NET Standard (C#) 中反序列化 x-www-form-urlencoded 编码字符串?
我知道这个问题的答案。但是,FormDataCollection 在 .NET Core 3.1 中似乎不可用。 见这里。
编辑:我被另一个外部系统传回了这个编码数据。我不是在编写 ASP.NET Core 网站/API。
所以我从来没有找到这个问题的简洁答案。所以我敲了自己的粗略序列化器。在这里张贴,以防有人从中得到任何用处。我仍然欢迎更好的答案!:-)
using System;
using System.Net.Http;
using System.Threading.Tasks;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Reflection;
public static class FormUrlEncodedSerializer
{
public static async Task<string> SerializeAsync(object obj)
{
if (obj == null)
throw new ArgumentNullException(nameof(obj));
var keyValues = obj.GetPropertiesAsDictionary();
var formUrlEncodedContent = new FormUrlEncodedContent(keyValues);
return await formUrlEncodedContent.ReadAsStringAsync();
}
public static T Deserialize<T>(string formUrlEncodedText) where T : new()
{
if (string.IsNullOrEmpty(formUrlEncodedText))
throw new ArgumentException("Form URL Encoded text was null or empty.", nameof(formUrlEncodedText));
var pairs = formUrlEncodedText.Split('&');
var obj = new T();
foreach (var pair in pairs)
{
var nameValue = pair.Split('=');
if (HasValue(nameValue))
{
obj.SetProperty(nameValue[0], nameValue[1]);
}
}
return obj;
}
private static bool HasValue(string[] nameValue)
{
return nameValue.Length == 2 && nameValue[1] != string.Empty;
}
}
public static class ObjectExtensions
{
public static void SetProperty(this object source, string propertyName, object propertyValue)
{
var pi = source.GetProperty(propertyName);
if (pi != null && pi.CanWrite)
{
pi.SetValue(source, propertyValue, null);
}
}
public static PropertyInfo GetProperty(this object source, string propertyName)
{
BindingFlags bindingFlags = BindingFlags.Public | BindingFlags.Instance;
return source.GetType().GetProperty(propertyName, bindingFlags);
}
public static IDictionary<string, string> GetPropertiesAsDictionary(this object source)
{
var dict = new Dictionary<string, string>();
if (source == null)
return dict;
var properties = source.GetType().GetProperties(BindingFlags.Instance | BindingFlags.Public);
foreach (var property in properties)
{
var value = property.GetValue(source);
if (value == null)
continue;
dict.Add(property.Name, value.ToString());
}
return dict;
}
}
编辑:用 GetPropertiesAsDictionary 替换 ToKeyValues。
您可以使用Microsoft.AspNetCore.WebUtilities.FormReader
将x-www-form-urlencoded
内容反序列化为字典,如下所示:
static Dictionary<string, StringValues> DeserializeForm(string content) {
using var reader = new FormReader(content);
return reader.ReadForm();
}
为此,一个班轮 linq 是:
Dictionary<string,string> ParamsDict = ReceivedData.Split('&').Select(x => x.Split('=')).ToDictionary(key => key[0].Trim(), value => value[1].Trim());