POST Requests

JumpKick.HttpLib — POST Requests

1. Overview of Available Request Methods (Http Static Class)

// All methods return a RequestBuilder fluent object
Http.Get(url);
Http.Post(url);
Http.Put(url);
Http.Delete(url);
Http.Patch(url);
Http.Head(url);Code language: JavaScript (javascript)

Unified fluent structure: RequestMethod().ParameterConfig().OnSuccess().OnFail().Go();

2. Two Parameter‑Passing Modes for POST

1. .Form(): Form submission Content‑Type: application/x‑www‑form‑urlencoded (web‑form format)
2. .Body(): Raw payload for custom JSON / XML / SOAP messages

3. Example 1: Form Submission

using System;
using JumpKick.HttpLib;

class Program
{
    static void Main(string[] args)
    {
        Http.Post("https://httpbin.org/post")
        .Form(new
        {
            name = "James",
            username = "j6mes"
        })
        .OnSuccess(result =>
        {
            Console.WriteLine("==== POST Form Request Succeeded ====");
            Console.WriteLine(result);
        })
        .OnFail(webexception =>
        {
            Console.WriteLine("==== Request Exception ====");
            Console.WriteLine(webexception.Message);
        })
        .Go();

        Console.ReadKey();
    }
}Code language: JavaScript (javascript)

4. Example 2: Submit JSON via Body

using System;
using JumpKick.HttpLib;

class Program
{
    static void Main(string[] args)
    {
        string jsonStr = "{\"account\":\"test\",\"pwd\":\"123456\"}";

        Http.Post("https://httpbin.org/post")
        .Body(jsonStr, "application/json") // Payload content + media‑type specification
        .OnSuccess(result =>
        {
            Console.WriteLine("==== POST‑JSON Request Succeeded ====");
            Console.WriteLine(result);
        })
        .OnFail(webexception =>
        {
            Console.WriteLine("==== Request Exception ====");
            Console.WriteLine(webexception.Message);
        })
        .Go();

        Console.ReadKey();
    }
}Code language: JavaScript (javascript)

5. Example 3: Handling a Failed POST

Intentionally target an endpoint that rejects POST to catch 405 and verify OnFail triggers

using System;
using JumpKick.HttpLib;

class Program
{
    static void Main(string[] args)
    {
        // httpbin.org/get only accepts GET; POST yields status 405
        Http.Post("https://httpbin.org/get")
        .Form(new
        {
            test = "demo"
        })
        .OnSuccess(result =>
        {
            Console.WriteLine("==== Request Succeeded ====");
            Console.WriteLine(result);
        })
        .OnFail(webexception =>
        {
            Console.WriteLine("==== Request Exception (405 caught) ====");
            Console.WriteLine(webexception.Message);
        })
        .Go();

        Console.ReadKey();
    }
}Code language: JavaScript (javascript)

6. Common Error Interpretation

Error: The remote server returned an error: (405) Method Not Allowed.

Cause: The target endpoint accepts GET only and rejects POST.

Solutions:

1. Switch to a POST‑capable test endpoint (httpbin.org/post recommended)
2. Verify allowed HTTP methods for your target API

7. GET / POST Key Comparison Summary

Method	Function	Parameter Style	Typical Use‑Case
GET	Http.Get()	URL query parameters	Data querying
POST Form	Http.Post().Form()	Form key‑value pairs	Web login, form submission
POST JSON	Http.Post().Body()	Raw string payload	Backend‑frontend API communication

POST Requests