一、按字符分割

多字符

[ ]内填入的字符将会作为切割字符串的标记，可输入\t\，tab键，空格键等。

QString str = "/home|cyfeng/mycpp/ FinalAUI3/mainwindows.cpp";
    QStringList list = str.split(QRegExp("[/. \t|]"));
    QString splitstr;
    for(int i=0;i<list.size();i++){
        splitstr = list[i];
        cout<<i<<" "<<splitstr.toStdString()<<endl;
    }

输出：
0
1 home
2 cyfeng
3 mycpp
4
5 FinalAUI3
6 mainwindows
7 cpp

单字符

    QString str = "/home/cyfeng/mycpp/FinalAUI3/mainwindows.cpp";
    QStringList list = str.split("/");
    QString splitstr;
    for(int i=0;i<list.size();i++){
        splitstr = list[i];
        cout<<i<<" "<<splitstr.toStdString()<<endl;
    }

输出：
0
1 home
2 cyfeng
3 mycpp
4 FinalAUI3
5 mainwindows.cpp

获取

QString str = "/home/cyfeng/mycpp/FinalAUI3/mainwindows.cpp";
QStringList list = str.split("/");
QString splitstr;
splitstr = list.first();
cout<<"first\t"<<splitstr.toStdString()<<endl;
splitstr = list.last();
cout<<"last\t"<<splitstr.toStdString()<<endl;
splitstr = list.at(3);
cout<<"at(3)\t"<<splitstr.toStdString()<<endl;
splitstr = list[4];
cout<<"[4]\t"<<splitstr.toStdString()<<endl;

输出：
first
last mainwindows.cpp
at(3) mycpp
[4] FinalAUI3

二、按位置分割

QString str = "1234567890abcdefghijkl";
QString splitstr;
splitstr = str.mid(4,3);
cout<<"mid\t"<<splitstr.toStdString()<<endl;
splitstr = str.left(5);
cout<<"left\t"<<splitstr.toStdString()<<endl;
splitstr = str.right(6);
cout<<"right\t"<<splitstr.toStdString()<<endl;

输出：
mid 567
left 12345
right ghijkl