2014-04-17 84 views
3

我在寫幾個測試函數,因爲這是我第一次使用Qt,並試圖瞭解我需要開發我的最終項目的位。下面是功能:閱讀與QJsonObject的JSON

#include "money.h" 
#include "ui_money.h" 
#include <QNetworkAccessManager> 
#include <QUrl> 
#include <QNetworkRequest> 
#include <QString> 
#include <QJsonArray> 
#include <QJsonDocument> 



Money::Money(QWidget *parent) : 
    QMainWindow(parent), 
    ui(new Ui::Money) 
{ 
    ui->setupUi(this); 
} 

Money::~Money() 
{ 
    delete ui; 
} 

void Money::on_getJsonData_clicked() 
{ 
    QNetworkAccessManager *manager = new QNetworkAccessManager(this); 
    connect(manager, SIGNAL(finished(QNetworkReply*)), 
      this, SLOT(replyFinished(QNetworkReply*))); 

    manager->get(QNetworkRequest(QUrl("http://scarjamoney.no-ip.biz"))); 


} 

void Money::replyFinished(QNetworkReply* Reply) 
{ 
    QString string = Reply->readAll(); 
    QJsonDocument document = QJsonDocument::fromJson(string.toUtf8()); 

    if(document.isArray()){ 
     QJsonArray valuesA = document.array(); 

     foreach (const QJsonValue write, valuesA){ 
      //ui->textEdit->setText("dentro"); 
      QString text = QString::number(write.toDouble()); 

      //qDebug() << "ciao" << text; 

      ui->textEdit->append(text); 
     } 
    } 
    else if(document.isObject()){ 
     QJsonObject valuesO = document.object(); 
     foreach (const QJsonValue write, valuesO){ 
      ui->textEdit->append("inside"); 
     } 

     ui->textEdit->append("it's an object"); 
    } 

} 

在陣列形式,例如測試JSON答覆的情況下:

[1,2] 

一切工作中,而不是測試狀物體:

{"firstValue":1,"secondValue":2} 

我得到以下錯誤編譯:

C:\Qt\Tools\QtCreator\bin\Money\money.cpp:53: error: variable 'QJsonObject valuesO' has initializer but incomplete type 
    QJsonObject valuesO = document.object(); 
C:\Qt\Tools\QtCreator\bin\Money\money.cpp:53: error: invalid use of incomplete type 'class QJsonObject' 
    QJsonObject valuesO = document.object(); 

爲什麼它不會將我的測試json文檔轉換爲對象?

由於提前, 詹姆斯

回答

6

你忘了包括QJsonObject

#include <QJsonDocument> 
#include <QJsonValue> 
#include <QJsonArray> 
#include <QJsonObject> 
+0

啊啊啊....有時那麼簡單......可以踢自己,花了大約一個小時看它藏漢! !謝謝 – James