guestextra.java

Java Web 开发使用标签的一个综合例子

package zengjsp;

//提供tag  类向pageContext提供的信息

import javax.servlet.jsp.tagext.*;

public class GuestExtra extends TagExtraInfo {

  public VariableInfo[] getVariableInfo(TagData dt){
   VariableInfo name= new    VariableInfo("name","String",true,VariableInfo.NESTED );//仅在tag可用
   VariableInfo gender= new    VariableInfo("gender","String",true,VariableInfo.NESTED );
   VariableInfo tele= new    VariableInfo("tele","String",true,VariableInfo.NESTED );
   VariableInfo mail= new    VariableInfo("mail","String",true,VariableInfo.NESTED );
   VariableInfo vif[]= { name,gender,tele,mail };
   System.err.println("yes extrainfo called!");
   return vif;

 }


}