Map params = actionContext.getContext (). Getparameters ();
It turns out that params is a parameter value in the form of array, and the modified program segment is:
Public Object getModel () {
IF (userdto! = null) Return UserDTo;
Integer PID = NULL;
String Sid = NULL;
Map params = actionContext.getContext (). Getparameters ();
IF (params.get ("id")! = null)
{
SID = (String []) params.get ("ID")) [0];}
IF (SID! = Null &&! Sid.equals ("")) {
Try {
User = userservice.getuserbyid (New Integer (SID));
// PO Convert to DTO
Userdto = New UserDTO (user);
} catch (exception e) {
Log.Error ("This user does not exist", e);
}
} else {
Userdto = new userDTO ();
}
Return Userdto;
}
