Qt = Cute Great LoveIt 之Json TreeWidget的生成 与QHttpMultiPart
星海
posted @ 2013年4月06日 22:43
in 通用知识
, 4345 阅读
一切都很简单清爽，甚至感觉超过了Python（我不会用PYTHON，但看过相关Python实现）。。。。太爽了。。。呵呵。。。
示例1：Json数据解析并在QTreeWidget中直接显示JSON解析后的树
#include "JsonTree.h"
#include <QtCore>
JsonTree::JsonTree(QTreeWidget *widget, const QJsonObject &object)
{
treeWidget = widget;
responseObject = object;
parseObject(responseObject);
}
void JsonTree::parseObject(const QJsonObject &object, QTreeWidgetItem *parent)
{
QStringList objectKeys = object.keys();
QTreeWidgetItem *child;
for (int i = 0; i < objectKeys.size(); i++) {
if (parent == NULL)
child = new QTreeWidgetItem(treeWidget);
else
child = new QTreeWidgetItem(parent);
child->setText(0, objectKeys[i]);
QJsonValue value = object[objectKeys.at(i)];
parseJsonValue(value, 1, child);
}
}
void JsonTree::parseJsonValue(const QJsonValue &jsonValue, int column, QTreeWidgetItem *node)
{
QString valueStr;
QJsonArray array;
switch (jsonValue.type()) {
case QJsonValue::Bool:
valueStr = jsonValue.toBool() ? "True" : "False";
node->setText(column, valueStr);
break;
case QJsonValue::String:
valueStr = jsonValue.toString();
node->setText(column, valueStr);
break;
case QJsonValue::Double:
valueStr = QString::number(jsonValue.toDouble());
node->setText(column, valueStr);
break;
case QJsonValue::Null:
valueStr = "NULL";
node->setText(column, valueStr);
break;
case QJsonValue::Undefined:
qDebug() << "Undefined Json Value, check your request";
break;
case QJsonValue::Array:
// Array used Key(array.at(i)) ：null
array = jsonValue.toArray();
for (int i = 0; i < array.size(); i++) {
parseJsonValue(array[i], 0, new QTreeWidgetItem(node));
}
break;
case QJsonValue::Object:
parseObject(jsonValue.toObject(), node);
break;
default:
qDebug() << "what's the fucking in parseJsonValue default";
break;
}
}
示例2：当前各种WebService横行，从B2C/B2B到社交网络，普遍要用到POST方法组装参数更新当前数据，Qt提供了强大但方便可操作的QHttpMultiPart。一切都很简单爽快，没有歧义和乱七八糟的Boundary和各种\r\n让你头晕。
QHttpMultiPart picPost;
QHttpPart statusPart;
statusPart.setHeader(QNetworkRequest::ContentTypeHeader, QVariant("text/plain"));
statusPart.setHeader(QNetworkRequest::ContentDispositionHeader, QVariant("form-data; name=\"status\""));
statusPart.setBody("测试QT5-SINA-WEIBO-API, json Formatter");
QHttpPart imagePart;
imagePart.setHeader(QNetworkRequest::ContentTypeHeader, QVariant("image/jpeg"));
imagePart.setHeader(QNetworkRequest::ContentDispositionHeader,
QVariant("form-data; name=\"pic\"; filename=\"test.jpg\""));
QFile *file = new QFile("/home/sd44/test.jpg");
file->open(QIODevice::ReadOnly);
imagePart.setBodyDevice(file);
picPost.append(statusPart);
picPost.append(imagePart);
networkAccessManager->post(sinaUploadApiUrl, picPost);
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