我正在尝试联系一个简单的登录Web服务,该服务将确定JSON请求是否成功。目前,在C#程序中,我发现一个错误,说缺少JSON参数。在Web浏览器中请求的正确URL是:
https://devcloud.fulgentcorp.com/bifrost/ws.php?json=[{"action":"login"},{"login":"demouser"},{"password":"xxxx"},{"checksum":"xxxx"}]
我现在在C#中实现的代码是:
using System;
using System.IO;
using System.Net;
using System.Text;
using System.Web.Script.Serialization;
namespace request
{
class MainClass
{
public static void Main (string[] args)
{
var httpWebRequest = (HttpWebRequest)WebRequest.Create("https://devcloud.fulgentcorp.com/bifrost/ws.php?");
httpWebRequest.ContentType = "application/json";
httpWebRequest.Method = "POST";
using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
{
string json = new JavaScriptSerializer().Serialize(new
{
action = "login",
login = "demouser",
password = "xxxx",
checksum = "xxxx"
});
Console.WriteLine ("\n\n"+json+"\n\n");
streamWriter.Write(json);
}
var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
var result = streamReader.ReadToEnd();
Console.WriteLine (result);
}
}
}
}
答案 0 :(得分:1)
示例URL看起来像是将JSON作为查询字符串传递 - 这是一个简单的GET请求。
您正在尝试POST JSON - 这是一种在查询字符串中传递JSON的更好方法 - 即由于长度限制以及需要转义简单字符(如空格)。但它不会像您的示例网址那样有效。
如果您能够修改服务器,我建议修改PHP以使用$ _REQUEST [' action']来使用数据,以及以下C#代码:
Public static void Main (string[] args)
{
using (var client = new WebClient())
{
var Parameters = new NameValueCollection {
{action = "login"},
{login = "demouser"},
{password = "xxxx"},
{checksum = "xxxx"}
httpResponse = client.UploadValues( "https://devcloud.fulgentcorp.com/bifrost/ws.php", Parameters);
Console.WriteLine (httpResponse);
}
}
如果必须将JSON作为查询字符串传递,则可以使用UriBuilder安全地创建完整的URL +查询字符串,然后发出GET请求 - 无需POST。