The application of pagination in EXTJS4

Source: Internet
Author: User
Tags json tojson stringbuffer

  This article describes how to use the pagination in the next Extjs4 and combine front and rear, specific examples such as, interested friends can refer to the following

The front section:  code is as follows: Ext.define (' GS.system.role.store.RoleGridStore ',{  extend: ' Ext.data.Store ',  model: ' GS.system.role.model.RoleGridModel ',  ID: ' Rolestoreid ',  pagesize:4,//paging size   proxy:{  type: ' Ajax ',  URL: '/gs_erp/roleaction!getrolelist ',  reader: {  type: ' JSON ',  root: ' Rows ',  Totalproperty: ' Total '  } },  sorters: [{  property: ' ID ',///Sort field   Direction: ' ASC '//default Asc&nbs P }],  autoload:{start:0, Limit:4}//start is starting from the first few, limit is the number of pages per page  });    store.loadpage (1); Load first page   Background section:  code as follows: Private int limit;//The number of bars   private int start;//from which data to check   private int total;// Total number  /**  * Find all roles   */  public void getrolelist ()   {    list<role> rolelist=new A Rraylist<role> ();  stringbuffer tojson=new stringbuffer ()//To put JSON data   SYSTEM.OUT.PRINTLN (start+) "+limit+", "+total";  try  {  rolelist= (list<role>) PAGeserviceimpl.commonpagination (Role.class, "", Start, limit);  Total=pageserviceimpl.gettotalnum (Role.class, " ");  Tojson.append (" {total: "). Append (" +total+ "). Append (", Success:true, "). Append (" Start: ")   Append (" "+start+"). Append (",");  tojson.append ("rows:[");  for (int i=0;i<rolelist.size (); i++)   {  Tojson.append ("{ID:"). Append (""). Append ("" +rolelist.get (i) getId () + ""). Append ("")  . Append (", Name:"). Append (""). Append ("" "+rolelist.get (i) getName () +" ")   Append (" ' "). Append (", desc: "). Append (" ") Rolelist.get (i). GetDesc () + "")   Append ("'"). Append ("}");  if (I<rolelist.size ()-1)   {  Tojson.append (","); } }  tojson.append ("]}"; } catch (Exception E1)   { //TODO Auto-ge Nerated catch block  e1.printstacktrace (); }  try  {  response.setheader ("Cache-Control", " No-cache ");  response.setcontenttype (" Text/json;charset=utf-8 ");  Response.getwriter(). Print (Tojson);  System.out.println (Tojson); } catch (IOException e)   { //TODO auto-generated Catch block  e.printstacktrace (); } }     
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