使用Qt设置http get请求参数 [英] Setting http get request parameters using Qt

问题描述

我正在开发一个基本的应用程序在Qt使用REST API从Parse.com检索数据。我经历了一些类引用和cURL手册，但它仍然不清楚如何设置请求参数。例如，我想要验证用户。下面是Parse提供的curl示例：

  curl -X GET \ 
 -HX-Parse- -Id：myappid\ 
 -HX-Parse-REST-API-Key：myapikey\ 
 -G \ 
 --data-urlencode'username = test' \ 
 --data-urlencode'password = test'\ 
 https://api.parse.com/1/login 
  

我设置的url和头像这样

  QUrl url https://api.parse.com/1/login）; 
 QNetworkRequest request（url）; 
 
 request.setRawHeader（X-Parse-Application-Id，myappid）; 
 request.setRawHeader（X-Parse-REST-API-Key，myapikey）; 
 
 nam-> get（request）; 
  

当没有参数的时候工作得很好，但是我应该使用什么来实现和curl一样

解决方案

使用--data-urlencode切换？

<不幸的是，QUrl :: addQueryItem（）在qt5中被弃用，但是从那里开始我发现了QUrlQuery类，它有一个addQueryItem（）方法，并且可以产生一个查询字符串，它是QUrl的setQuery（）方法可以接受的，所以它现在看起来像这样和工作正常：

  QUrl url（https://api.parse.com/1/login）; 
 QUrlQuery查询; 
 
 query.addQueryItem（username，test）; 
 query.addQueryItem（password，test）; 
 
 url.setQuery（query.query（））; 
 
 QNetworkRequest request（url）; 
 
 request.setRawHeader（X-Parse-Application-Id，myappid）; 
 request.setRawHeader（X-Parse-REST-API-Key，myapikey）; 
 
 nam-> get（request）; 
  

感谢Chris的提示。

I'm developing a basic application in Qt that retrieves data from Parse.com using the REST API. I went through some class references and the cURL manual but it's still not clear how you set the request parameters. For example, I'd like to authenticate a user. Here's the curl example provided by Parse:

curl -X GET \
-H "X-Parse-Application-Id: myappid" \
-H "X-Parse-REST-API-Key: myapikey" \
-G \
--data-urlencode 'username=test' \
--data-urlencode 'password=test' \
https://api.parse.com/1/login

I set the url and the headers like this

QUrl url("https://api.parse.com/1/login");
QNetworkRequest request(url);

request.setRawHeader("X-Parse-Application-Id", "myappid");
request.setRawHeader("X-Parse-REST-API-Key", "myapikey");

nam->get(request);

which worked fine when there were no parameters, but what should I use to achieve the same as curl does with the --data-urlencode switch?

Thanks for your time

解决方案

Unfortunately, QUrl::addQueryItem() is deprecated in qt5 but starting from there I found the QUrlQuery class which has an addQueryItem() method and can produce a query string that is acceptable for QUrl's setQuery() method so it now looks like this and works fine:

QUrl url("https://api.parse.com/1/login");
QUrlQuery query;

query.addQueryItem("username", "test");
query.addQueryItem("password", "test");

url.setQuery(query.query());

QNetworkRequest request(url);

request.setRawHeader("X-Parse-Application-Id", "myappid");
request.setRawHeader("X-Parse-REST-API-Key", "myapikey");

nam->get(request);

Thanks for the tip Chris.

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