我具有以下JSON，必须将其转换为GET请求的URL参数。
example is given here，但是由于此对象的复杂性，可能会有多个line_items_attributes，每个都有所示的给定值，我很难传递正确的值。
我还尝试过序列化JSON对象并传递该值，但这也不能解决问题。
{
"purchase_invoice":
{
"date":"14/04/2015",
"due_date":"14/04/2015",
"contact_id":500,
"contact_name":"TestContact",
"reference":"TestReference",
"line_items_attributes":[
{
"unit_price":10.00,
"quantity":1,
"description":"TestLineItemAttDesc",
"tax_code_id":1,
"ledger_account_id":501,
"tax_rate_percentage":19.0,
"tax_amount":1.60
}]
}
}
我已经搜寻了一段时间，但运气不佳。任何见解都将受到赞赏，也非常欢迎！
这正在调用不支持JSON格式的传入数据的API，因此无法在服务器端执行此操作或更改Web服务以支持JSON格式的数据。
听起来您需要x-www-form-urlencoded。
根据您的示例，它看起来像这样：
purchase_invoice%5Bdate%5D=14%2F04%2F2015&purchase_invoice%5Bdue_date%5D=14%2F04%2F2015&purchase_invoice%5Bcontact_id%5D=500&purchase_invoice%5Bcontact_name%5D=TestContact&purchase_invoice%5Breference%5D=TestReference&purchase_invoice%5Bline_items_attributes%5D%5B0%5D%5Bunit_price%5D=10&purchase_invoice%5Bline_items_attributes%5D%5B0%5D%5Bquantity%5D=1&purchase_invoice%5Bline_items_attributes%5D%5B0%5D%5Bdescription%5D=TestLineItemAttDesc&purchase_invoice%5Bline_items_attributes%5D%5B0%5D%5Btax_code_id%5D=1&purchase_invoice%5Bline_items_attributes%5D%5B0%5D%5Bledger_account_id%5D=501&purchase_invoice%5Bline_items_attributes%5D%5B0%5D%5Btax_rate_percentage%5D=19&purchase_invoice%5Bline_items_attributes%5D%5B0%5D%5Btax_amount%5D=1.6
我知道的这种编码的最佳参考是jQuery JavaScript库上未公开的jQuery.param方法。
x-www-form-urlencoded内容本质上是键/值元组的平面序列，并且如x-www-form-urlencoded在this answer至How do I use FormUrlEncodedContent for complex data types?中所解释的那样，没有规范的方法可以转换分层的，嵌套的键/值结构统一。
不过，从Tomalak到这个问题，从Stripe API的accepted answer，以及上面提到的this example，似乎很常见的是通过将复杂的嵌套对象的键括在方括号中并附加来使参数复杂化他们到最上面的键，像这样：
question
如果这是您想要的，则可以使用以下扩展方法通过{
{ "purchase_invoice[date]", "14/04/2015" }
{ "purchase_invoice[due_date]", "14/04/2015" }
{ "purchase_invoice[contact_id]", "500" }
{ "purchase_invoice[contact_name]", "TestContact" }
{ "purchase_invoice[reference]", "TestReference" }
{ "purchase_invoice[line_items_attributes][0][unit_price]", "10" }
{ "purchase_invoice[line_items_attributes][0][quantity]", "1" }
{ "purchase_invoice[line_items_attributes][0][description]", "TestLineItemAttDesc" }
{ "purchase_invoice[line_items_attributes][0][tax_code_id]", "1" }
{ "purchase_invoice[line_items_attributes][0][ledger_account_id]", "501" }
{ "purchase_invoice[line_items_attributes][0][tax_rate_percentage]", "19" }
{ "purchase_invoice[line_items_attributes][0][tax_amount]", "1.6" }
}
生成此类键/值对：
json.net
然后，如果您有JSON字符串，则可以将其解析为public static partial class JsonExtensions
{
public static string ToUrlEncodedQueryString(this JContainer container)
{
return container.ToQueryStringKeyValuePairs().ToUrlEncodedQueryString();
}
public static IEnumerable<KeyValuePair<string, string>> ToQueryStringKeyValuePairs(this JContainer container)
{
return container.Descendants()
.OfType<JValue>()
.Select(v => new KeyValuePair<string, string>(v.ToQueryStringParameterName(), (string)v));
}
public static string ToUrlEncodedQueryString(this IEnumerable<KeyValuePair<string, string>> pairs)
{
return string.Join("&", pairs.Select(p => HttpUtility.UrlEncode(p.Key) + "=" + HttpUtility.UrlEncode(p.Value)));
//The following works but it seems heavy to construct and await a task just to built a string:
//return new System.Net.Http.FormUrlEncodedContent(pairs).ReadAsStringAsync().Result;
//The following works and eliminates allocation of one intermediate string per pair, but requires more code:
//return pairs.Aggregate(new StringBuilder(), (sb, p) => (sb.Length > 0 ? sb.Append("&") : sb).Append(HttpUtility.UrlEncode(p.Key)).Append("=").Append(HttpUtility.UrlEncode(p.Value))).ToString();
//Answers from https://stackoverflow.com/questions/3865975/namevaluecollection-to-url-query that use HttpUtility.ParseQueryString() are wrong because that class doesn't correctly escape the keys names.
}
public static string ToQueryStringParameterName(this JToken token)
{
// Loosely modeled on JToken.Path
// https://github.com/JamesNK/Newtonsoft.Json/blob/master/Src/Newtonsoft.Json/Linq/JToken.cs#L184
// By https://github.com/JamesNK
if (token == null || token.Parent == null)
return string.Empty;
var positions = new List<string>();
for (JToken previous = null, current = token; current != null; previous = current, current = current.Parent)
{
switch (current)
{
case JProperty property:
positions.Add(property.Name);
break;
case JArray array:
case JConstructor constructor:
if (previous != null)
positions.Add(((IList<JToken>)current).IndexOf(previous).ToString(CultureInfo.InvariantCulture)); // Don't localize the indices!
break;
}
}
var sb = new StringBuilder();
for (var i = positions.Count - 1; i >= 0; i--)
{
var name = positions[i];
// TODO: decide what should happen if the name contains the characters `[` or `]`.
if (sb.Length == 0)
sb.Append(name);
else
sb.Append('[').Append(name).Append(']');
}
return sb.ToString();
}
}
LINQ-to-JSON并生成查询字符串，如下所示：
JObject或者，如果您有一些分层数据模型POCO，则可以使用JObject从模型中生成var obj = JObject.Parse(jsonString);
var queryString = obj.ToUrlEncodedQueryString();
：
JObject演示小提琴JObject.FromObject()。
因此最终网址将很容易使用任何JObject.FromObject()进行计算。在C＃中，我们可以执行以下操作：
var obj = JObject.FromObject(myModel);
var queryString = obj.ToUrlEncodedQueryString();
您是否可以通过任何方式发布数据或发送请求正文？似乎更容易/更干净。