Jsp custom Tab

It took me a morning to study the custom tags. A custom page tag is created. The code is not carefully optimized. Post it first ,:)

1. Implementation class NumenTag. java of labels

Import java. util. ArrayList;
Import java. util. HashMap;
Import java. util. List;
Import java. util. Map;

Import javax. servlet. jsp (preferred for SUN Enterprise Applications). jsp (preferred for SUN Enterprise Applications) Exception;
Import javax. servlet. jsp (preferred for SUN Enterprise Applications). jsp (preferred for SUN Enterprise Applications) Writer;
Import javax. servlet. jsp (preferred for SUN Enterprise Applications). tagext. TagSupport;

/***//**
* Custom tab pages
*
* @ Author ma Wanlin
*
*/
Public class NumenTag extends TagSupport {

Private String url = null;

Private Result result;

Private String page = null;

Private String [] p;

Private Map kv = new HashMap ();

Private List key = null;

/***//**
* Separation Parameters
* @ Param params
*/
Public void setParams (String params ){
Key = new ArrayList ();
P = params. split (";");
For (int I = 0; p. length> 1 & I <p. length; I ++ ){
Kv. put (p [I]. split (":") [0], p [I]. split (":") [1]);
Key. add (p [I]. split (":") [0]);
}
}

/***//**
* Paging results
* @ Param result
*/
Public void setResult (String result ){
This. result = (Result) pageContext. getRequest (). getAttribute ("result ");
This. page = (String) pageContext. getRequest (). getAttribute ("page ");
}

Public void setUrl (String url ){
This. url = url;
}

Public int doStartTag () throws jsp (preferred for SUN Enterprise Applications) Exception {
StringBuffer sb = null;
If (result! = Null & result. getContent ()! = Null
& Result. getContent (). size ()> 0 ){
Sb = new StringBuffer ("Paging :");
If (result. getPage (). getHasPrePage ()){
Sb. append ("<a href ="). append (url );
If (url. indexOf ("? ") =-1)
Sb. append ("? Page = 1 ");
Else
Sb. append ("& page = 1 ");
LinkParams (sb );
Sb. append (">"). append ("Homepage"). append ("</a>"). append ("| ");
Sb. append ("<a href ="). append (url );
If (url. indexOf ("? ") =-1)
Sb. append ("? Page = "). append (
Result. getPage (). getPreviousPage ());
Else
Sb. append ("& page ="). append (
Result. getPage (). getPreviousPage ());
LinkParams (sb );
Sb. append (">"). append ("Previous Page"). append ("</a>"). append ("| ");
}
If (result. getPage (). getHasNextPage ()){
Sb. append ("<a href ="). append (url );
If (url. indexOf ("? ") =-1)
Sb. append ("? Page = "). append (result. getPage (). getNextPage ());
Else
Sb. append ("& page ="). append (result. getPage (). getNextPage ());
LinkParams (sb );
Sb. append (">"). append ("next page"). append ("</a>"). append ("| ");
Sb. append ("<a href ="). append (url );
If (url. indexOf ("? ") =-1)
Sb. append ("? Page = "). append (result. getPage (). getTotalPage ());
Else
Sb. append ("& page ="). append (result. getPage (). getTotalPage ());
LinkParams (sb );
Sb. append (">"). append ("last page"). append ("</a> ");
}
Sb
. Append ("Jump to: <select name = goToPage onchange = javascript: goPage (this. value)> ");
Int s = result. getPage (). getTo