Java

Example: Http.HttpJson method - Send a POST with JSON Body

See more HTTP Examples

Demonstrates how to call the HttpJson method, which sends an HTTP POST with a JSON body. This example sends the following request:

POST /echo_request_body.asp HTTP/1.1
Host: chilkatsoft.com
Accept: */*
Accept-Encoding: gzip
Content-Type: application/json
Content-Length: 26

{"greeting":"Hello World"}

Also see: Chilkat Http Default and Auto-Filled Headers

Java

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success = false;

    CkHttp http = new CkHttp();
    success = false;

    CkJsonObject json = new CkJsonObject();

    //  Build the following JSON:  {"greeting":"Hello World"}
    json.UpdateString("greeting","Hello World");

    //  This URL echoes the contents of the request body, letting us view it.
    String url = "https://chilkatsoft.com/echo_request_body.asp";

    //  Send a POST with the JSON in the HTTP request body.
    CkHttpResponse resp = new CkHttpResponse();
    success = http.HttpJson("POST",url,json,"application/json",resp);
    if (success == false) {
        System.out.println(http.lastErrorText());
        return;
        }

    System.out.println("Response Status Code: " + resp.get_StatusCode());

    //  Examine the request we sent.
    //  The LastHeader property stores the HTTP request header of the most recent request sent,
    //  and in this instance, the response body mirrors the request body.
    System.out.println(http.lastHeader());
    System.out.println(resp.bodyStr());

    //  Output:

    //  POST /echo_request_body.asp HTTP/1.1
    //  Host: chilkatsoft.com
    //  Accept: */*
    //  Accept-Encoding: gzip
    //  Content-Type: application/json
    //  Content-Length: 26
    //  
    //  {"greeting":"Hello World"}
  }
}