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(Unicode C) Creating an application/json HTTP POST RequestDemonstrates how to create an HTTP POST request having the Content-Type application/json, where the body of the HTTP request is the following JSON: { "username" : "my_username", "password" : "my_password", "validation-factors" : { "validationFactors" : [ { "name" : "remote_address", "value" : "127.0.0.1" } ] } } The generated HTTP request looks like this: POST /something HTTP/1.1 Content-Type: application/json Accept: application/json Host: domain Content-Length: 216 { "username": "my_username", "password": "my_password", "validation-factors": { "validationFactors": [ { "name": "remote_address", "value": "127.0.0.1" } ] } }
#include <C_CkHttpRequestW.h> #include <C_CkJsonObjectW.h> #include <C_CkJsonArrayW.h> void ChilkatSample(void) { HCkHttpRequestW req; HCkJsonObjectW json; HCkJsonObjectW vFactors; HCkJsonArrayW vArray; HCkJsonObjectW factorObj; const wchar_t *requestMime; // This example demonstrates building an application/json request. req = CkHttpRequestW_Create(); // The ContentType, HttpVerb, and Path properties should // always be explicitly set. CkHttpRequestW_putHttpVerb(req,L"POST"); CkHttpRequestW_putPath(req,L"/something"); CkHttpRequestW_putContentType(req,L"application/json"); // We may wish to add an "Accept" header to the request. // This tells the server we'll accept an application/json response. CkHttpRequestW_AddHeader(req,L"Accept",L"application/json"); // We'll use Chilkat's JSON API to create the JSON body of the HTTP request. json = CkJsonObjectW_Create(); CkJsonObjectW_AppendString(json,L"username",L"my_username"); CkJsonObjectW_AppendString(json,L"password",L"my_password"); vFactors = CkJsonObjectW_AppendObject(json,L"validation-factors"); vArray = CkJsonObjectW_AppendArray(vFactors,L"validationFactors"); CkJsonArrayW_AddObjectAt(vArray,0); factorObj = CkJsonArrayW_ObjectAt(vArray,0); CkJsonObjectW_AppendString(factorObj,L"name",L"remote_address"); CkJsonObjectW_AppendString(factorObj,L"value",L"127.0.0.1"); CkJsonObjectW_Dispose(factorObj); CkJsonArrayW_Dispose(vArray); CkJsonObjectW_Dispose(vFactors); // Use the JSON for the HTTP request body // By default, the Emit method will output compact JSON. // This is best for generating the smallest size request. // To generate a more human-readable (pretty-printed) JSON request body, // set the EmitCompact property to FALSE CkJsonObjectW_putEmitCompact(json,FALSE); CkHttpRequestW_LoadBodyFromString(req,CkJsonObjectW_emit(json),L"utf-8"); // View the request that would be sent if SynchronousRequest was called: requestMime = CkHttpRequestW_generateRequestText(req); wprintf(L"%s\n",requestMime); // A few important comments about the HTTP request that is generated: // // 1) The Content-Length header is automatically generated based on the actual length of the MIME message // that follows the intial (topmost) MIME header. // 2) The HOST header will automatically get filled in with the actual domain when SynchronousRequest // is called CkHttpRequestW_Dispose(req); CkJsonObjectW_Dispose(json); } |
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