我试图联系一个简单的登录web服务,以确定JSON请求是否成功。目前,在C#程序中,我遇到了一个错误,说缺少一个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);
}
}
}
}发布于 2015-06-22 02:42:17
看起来,示例URL将JSON作为查询字符串传递--它是一个简单的GET请求。
您正在尝试发布JSON --这是在查询字符串中传递JSON的一种更好的方法--也就是说,由于长度限制和需要转义简单字符(例如空格)。但是它不会像您的示例URL那样工作。
如果您能够修改服务器,我建议修改PHP以便使用$_ C#‘’action‘来使用数据,并使用以下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--无需发布。
https://stackoverflow.com/questions/30969910
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