JSP自定义标签_控制标签体重复执行

什么也不说,直接上代码:

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.IterationTag;
import javax.servlet.jsp.tagext.Tag;
import javax.servlet.jsp.tagext.TagSupport;

//控制标签体重复执行
public class TagDemo3 extends TagSupport {

    int x = 5;
    @Override
    public int doStartTag() throws JspException {
        return Tag.EVAL_BODY_INCLUDE;
    }
    
    @Override
    public int doAfterBody() throws JspException {
        x--;
        if(x>0){
            return IterationTag.EVAL_BODY_AGAIN;
        }else{
            return IterationTag.SKIP_BODY;
        }
    }

    

    
    
    
    
}

<%@taglib uri="/itcast" prefix="itcast" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>控制页面内容重复执行5次</title>
  </head>
  
  <body>
   
   <itcast:demo3>
       xxxxx
   </itcast:demo3>
  </body>
</html>

<tag>
        <name>demo3</name>
        <tag-class>cn.itcast.web.tag.TagDemo3</tag-class>
        <body-content>JSP</body-content>
 </tag>