C++ 使用 QNetworkRequest 的 HTTP POST 正确格式
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Correct format for HTTP POST using QNetworkRequest
提问by DarwinIcesurfer
I'm trying to send a JSON query to a web service and I continue to get internal server errors as a response to the query.
我正在尝试向 Web 服务发送 JSON 查询，但作为对查询的响应，我继续收到内部服务器错误。
Here is what I'm trying to send:
这是我要发送的内容：
POST /api/1.7/webservice.asmx HTTP/1.1
Host: www.superService.com
User-Agent: My app name v0.1
X-Custom-User-Agent: My app name v0.1
Content-Type: application/json
Content-Length:81
{"method":"AuthenticatePlain","loginName":"[email protected]","password":"mypass"}
This is supposed to be sent to https://www.superService.com/api/1.7/ssapi.asmx
这应该发送到 https://www.superService.com/api/1.7/ssapi.asmx
In preparing the QNetworkRequest, what method is used to insert the line
在准备中QNetworkRequest，用什么方法插入行
POST /api/1.7/webservice.asmx HTTP/1.1?
POST /api/1.7/webservice.asmx HTTP/1.1？
Is the complete header contained in the QNetworkRequestobject?
Should the JSON data be in the QNetworkRequestobject or is that added to the post as the second argument in the QNetworkAccessManager::post()method?
QNetworkRequest对象中是否包含完整的标头？
JSON 数据应该在QNetworkRequest对象中还是作为方法中的第二个参数添加到帖子中QNetworkAccessManager::post()？
Here is my current code in the on_btnLogin_clicked()slot:
这是我当前在on_btnLogin_clicked()插槽中的代码：
connect(m_qnam, SIGNAL(finished(QNetworkReply*)),
this, SLOT(handleNetworkData(QNetworkReply*)));
connect(m_qnam,SIGNAL(sslErrors(QNetworkReply*,QList<QSslError>)),
this, SLOT(handleSSLErrors(QNetworkReply*)));
QString baseString = "";
baseString.append(QString("POST /api/1.7/webservice.asmx HTTP/1.1\r\n").toUtf8());
baseString.append(QString("www.superService.com\r\n").toUtf8());
baseString.append(QString("User-Agent: My app name v0.1\r\n").toUtf8());
baseString.append(QString("X-Custom-User-Agent: My app name v0.1\r\n").toUtf8());
baseString.append(QString("Content-Type: application/json\r\n").toUtf8());
QString jsonString = QString("{");
jsonString.append("\"method\":");
jsonString.append("\"AuthenticatePlain\"");
jsonString.append(",\"loginName\":");
jsonString.append("\"[email protected]\"");
jsonString.append(",\"password\":");
jsonString.append("\"mypass\"");
jsonString.append("}");
QByteArray json = jsonString.toUtf8();
baseString.append(QString("Content-Length:").toUtf8());
baseString.append(QString::number(json.length()));
baseString.append("\r\n").toUtf8();
baseString.append(QString("\r\n").toUtf8());
baseString.append(json);
request = QNetworkRequest(QUrl("https://www.superService.com/api/1.7/ssapi.asmx"));
request.setRawHeader()
qDebug() << "Base String: "<< baseString;
m_qnam->post(request,baseString.toUtf8());
回答by air-dex
This is not the right way to write your HTTP request. The following piece of code is more correct :
这不是编写 HTTP 请求的正确方法。下面的一段代码更正确：
connect(m_qnam, SIGNAL(finished(QNetworkReply*)), this, SLOT(handleNetworkData(QNetworkReply*)));
connect(m_qnam,SIGNAL(sslErrors(QNetworkReply*,QList<QSslError>)), this, SLOT(handleSSLErrors(QNetworkReply*)));
// Build your JSON string as usual
QByteArray jsonString = "{\"method\":\"AuthenticatePlain\",\"loginName\":\"[email protected]\",\"password\":\"mypass\"}";
// For your "Content-Length" header
QByteArray postDataSize = QByteArray::number(jsonString.size());
// Time for building your request
QUrl serviceURL("https://www.superService.com/api/1.7/ssapi.asmx");
QNetworkRequest request(serviceURL);
// Add the headers specifying their names and their values with the following method : void QNetworkRequest::setRawHeader(const QByteArray & headerName, const QByteArray & headerValue);
request.setRawHeader("User-Agent", "My app name v0.1");
request.setRawHeader("X-Custom-User-Agent", "My app name v0.1");
request.setRawHeader("Content-Type", "application/json");
request.setRawHeader("Content-Length", postDataSize);
// Use QNetworkReply * QNetworkAccessManager::post(const QNetworkRequest & request, const QByteArray & data); to send your request. Qt will rearrange everything correctly.
QNetworkReply * reply = m_qnam->post(request, jsonString);
