STRUTS2 Operating Database

Struts2 operation database is a difficult point for beginners is also a focus, and now I explain to you struts2 operation database, using STRUTS2 to the database to increase, delete, change, check and paging query, see the following code:

User class

public class Useraction extends actionsupport{
List<user> userlist;
Userdao userdao=new Userdao ();
User user;
User2 User2;
Public User2 GetUser2 () {
return user2;
}








public void SetUser2 (User2 user2) {
This.user2 = User2;
}








Public User GetUser () {

return user;
}








public void SetUser (user user) {
This.user = user;
}








public int Getfirstrecord () {
return Firstrecord;
}








public void Setfirstrecord (int firstrecord) {
This.firstrecord = Firstrecord;
}


private int currentpage = 1;

private int Records;

private int pageSize = 5;

private int pages;

int Firstrecord;



Public list<user> getuserlist () {
return userlist;
}
public void Setuserlist (list<user> userlist) {
This.userlist = userlist;
}
Public Userdao Getuserdao () {
return Userdao;
}
public void Setuserdao (Userdao Userdao) {
This.userdao = Userdao;
}
public int getcurrentpage () {
return currentpage;
}
public void setcurrentpage (int currentpage) {
This.currentpage = CurrentPage;
}
public int getRecords () {
return Records;
}
public void Setrecords (int records) {
Records = Records;
}
public int getpagesize () {
return pageSize;
}
public void setpagesize (int pageSize) {
This.pagesize = pageSize;
}
public int getpages () {
return pages;
}
public void setpages (int pages) {
this.pages = pages;
}
public void pages () {
Records=userdao.getallcount ();


Pages = records/pagesize+ ((records%pagesize==0)? 0:1);
Firstrecord = (currentPage-1) *pagesize;
}
Public String Listall () throws Exception {


This.pages ();
UserList =userdao.dolist (Firstrecord, pageSize);
return SUCCESS;
}
Public String AddUser () {
Userdao.adduser (user);
return SUCCESS;
}
Public String DeleteUser () {
Userdao.deleteuser (user);
return SUCCESS;
}
Public String UpdateUser () {
Userdao.updateuser (user);
return SUCCESS;
}
Public String GetInfo () {

User=userdao.getinfo (USER.UID);

return SUCCESS;
}

Database connection to write their own, and then the action in the configuration can be run, if you need source code can be downloaded to the http://blog.csdn.net/u014626784 resources.