Qt----[字符串分割，提取]

1.获取（"C:/Users/test/Desktop/app"）

QString appPathAndName= "C:/Users/test/Desktop/app/test.exe";

• 方法一：

  qDebug()<<appPathAndName.left(appPathAndName.lastIndexOf("/"));

   

• 方法二：

  QString exeName=appPathAndName.section('/', -1);
  int index = appPathAndName.lastIndexOf(exeName);
  appPath = appPathAndName.section("",0,index-2,flag);
  
  #appPath===="C:/Users/test/Desktop/app"
  #exeName===="test.exe"

   

2.去掉file:///

QString appPathAndName= "file:///C:/Users/test/Desktop/app/test.exe";

QString absoluteFilePath = filepath.remove(0,8); //去掉 "file:///"

3.时间日期提取

QString _year = "2015年";
int year = _year.left(_year.length-1);