版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/u013776188/article/details/78615490
//写数据
void MainWindow::on_pushButton_clicked()
{
if(dataMap.size()<=0){
QMessageBox::information(this,"","请先进行读数据操作！",NULL);
return;
}
QFile file("C:/20171114.csv");
QTextStream textStream;
if(!file.open(QFile::WriteOnly | QFile::Truncate | QFile::Text)){
QMessageBox::information(this,"","无生成盘符，应生成在C:/20171114.csv",NULL);
}else{
textStream.setDevice(&file);
textStream.setCodec("GB2312");
QMap<QString,int>dataNumMap;
for(auto it = dataMap.begin();it != dataMap.end();++it){
dataNumMap.insert(it.key(),it.value().size());
}
int maxNum = dataNumMap[dataNumMap.firstKey()];
for(auto it = dataMap.begin();it != dataMap.end();++it){
int temp = dataNumMap[it.key()];
if(maxNum <= temp)
maxNum = temp;
}
QString headerStr = "SevRNP,Number";
for(int i=1;i<=maxNum;i++){
headerStr = headerStr + ",TagRNP" + QString::number(i);
}
textStream << headerStr +"\n";
//写数据
QString dataStr;
for(auto it = dataMap.begin();it != dataMap.end();++it){
dataStr = it.key()+","+QString::number(it.value().size());
for(int i=0;i<it.value().size();++i){
QStringList value = it.value();
dataStr += ","+value.at(i);
}
textStream << dataStr +"\n";
dataStr.clear();
}
}
file.close();
this->close();
QMessageBox::information(this,"","文件生成在C:/20171114.csv",NULL);
}
//读取数据
void MainWindow::on_pushButton_2_clicked()
{
QFile file("C:/20171113.csv");
if(!file.open(QIODevice::ReadOnly | QIODevice::Text)){
QMessageBox::information(this,"","文件放错位置，应放置C:/20171113.csv",NULL);
}else{
QTextStream textStream(&file);
textStream.setCodec("GB2312");
textStream.readLine();
//读数据
QStringList firstData = textStream.readLine().split(",");
SevRNP = firstData.at(0);
TagRNPList.append(firstData.at(1));
while(!textStream.atEnd()){
QStringList tempData = textStream.readLine().split(",");
if(tempData.at(0) == SevRNP){
TagRNPList.append(tempData.at(1));
continue;
}
dataMap.insert(SevRNP,TagRNPList);
SevRNP = tempData.at(0);
TagRNPList.clear();
TagRNPList.append(tempData.at(1));
}
QMessageBox::information(this,"","数据读取完成，请写数据生成文件！",NULL);
}
file.close();
// QString len ;
// for(auto it = dataMap.begin();it != dataMap.end();++it){
// len += QString::number(it.value().size())+",";
// }
}