timetag.java

<Java网络程序设计 J2EE>随书源码

package jwadbook.taglib;


import java.io.*;
import java.util.*;
import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;
import java.text.*;

public class TimeTag implements Tag {
   private PageContext pageContext;
   private Tag parent;
   private java.util.Calendar calendar;

   public TimeTag() {
      super();
   }

   public int doStartTag() throws JspException {
      try {
         calendar = Calendar.getInstance(); 
         pageContext.getOut().print(
         DateFormat.getDateInstance().format(calendar.getTime())+" "+
         DateFormat.getTimeInstance().format(calendar.getTime())
         );
      } catch (IOException tage) {
         throw new JspException("TimeTag Error: "+ tage.getMessage());
      }
      return SKIP_BODY;
   }

   public int doEndTag() throws JspException {
      return SKIP_PAGE;
   }

   public void release() {
   }

   public void setPageContext(PageContext 
   pageContext) {
      this.pageContext = pageContext;
   }

   public void setParent(Tag parent) {
      this.parent = parent;
   }

   public Tag getParent() {
      return parent;
   }
}