C++使用Jsoncpp源码

#include "jsoncpp.cpp"

void MainWindow::on_pushButton_clicked()
{
    std::string jsonStr;
    Json::Value root, lang, mail;
    Json::StreamWriterBuilder writerBuilder;
    std::ostringstream os;

    root["Name"] = "Liming";
    root["Age"] = 26;

    lang[0] = "C++";
    lang[1] = "Java";
    root["Language"] = lang;

    mail["Netease"] = "lmshao@163.com";
    mail["Hotmail"] = "liming.shao@hotmail.com";
    root["E-mail"] = mail;

    std::unique_ptr<Json::StreamWriter> jsonWriter(writerBuilder.newStreamWriter());
    jsonWriter->write(root, &os);
    jsonStr = os.str();

    std::cout << "Json:\n" << jsonStr << std::endl;
}

void MainWindow::on_pushButton_2_clicked()
{
    std::string strValue = "{\"key\":\"value1\",\"array\":[{\"arraykey\":1},{\"arraykey\":2}]}";

    Json::Reader reader;
    Json::Value root;
    // reader将Json字符串解析到root，root将包含Json里所有子元素
    if (reader.parse(strValue, root))
    {
       if (!root["key"].isNull())
       {
        std::string strValue= root["key"].asString();
        std::cout << strValue<< std::endl;
      }
      Json::Value arrayObj = root["array"];
      for (int i=0; i<arrayObj.size(); i++)
      {
        int iarrayValue = arrayObj[i]["arraykey"].asInt();
        std::cout << iarrayValue << std::endl;
      }
    }
}