使用QNetworkRequest更正HTTP POST的格式 [英] Correct format for HTTP POST using QNetworkRequest
问题描述
我尝试向网络服务发送JSON查询，并继续获得内部服务器错误，作为对查询的响应。
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.
这里是我尝试发送：
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":"username@domain.com","password":"mypass"}
这应该发送到 https://www.superService.com/api/1.7/ssapi.asmx
在准备QNetworkRequest时，使用什么方法用于插入行
In preparing the QNetworkRequest, what method is used to insert the line
POST /api/1.7/webservice.asmx HTTP / 1.1 ？
QNetworkRequest对象中是否包含完整的标题？
如果JSON数据位于QNetworkRequest对象中，或者是作为QNetworkAccessManager :: post中的第二个参数添加到帖子中）方法？
Is the complete header contained in the QNetworkRequest object?
Should the JSON data be in the QNetworkRequest object or is that added to the post as the second argument in the QNetworkAccessManager::post() method?
这是我当前在on_btnLogin_clicked（）插槽中的代码：
Here is my current code in the on_btnLogin_clicked() slot:
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("\"username@domain.com\"");
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());
推荐答案
这不是编写HTTP请求的正确方法。以下代码段更正确：
This is not the right way to write your HTTP request. The following piece of code is more correct :
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\":\"username@domain.com\",\"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);
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