JSP自定义标签_简单标签修改标签体内容小写改为大写

什么也不说,直接上代码:

import java.io.IOException;
import java.io.StringWriter;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.PageContext;
import javax.servlet.jsp.tagext.JspFragment;
import javax.servlet.jsp.tagext.SimpleTagSupport;
//用简单标签修改标签体内容小写变大写
public class SimpleTagDemo3 extends SimpleTagSupport {

    @Override
    public void doTag() throws JspException, IOException {
        
        JspFragment jf = this.getJspBody();
        StringWriter sw = new StringWriter();
        jf.invoke(sw);
        
        String content = sw.getBuffer().toString();
        
        content = content.toUpperCase();
        
        PageContext pageContent = (PageContext) this.getJspContext();
        pageContent.getOut().write(content);
        
        
        
    }

    
    
}
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib uri="/simpleitcast" prefix="itcast"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>修改标签体</title>
  </head>
  
  <body>
   
   <itcast:demo3>
       xxx
   </itcast:demo3>
   
  </body>
</html>
<tag>
        <name>demo3</name>  <!-- 为标签处理器类配一个标签名 -->
        <tag-class>cn.itcast.web.simpletag.SimpleTagDemo3</tag-class>
        <body-content>scriptless</body-content>
    </tag>

 

posted @ 2013-06-20 21:54  亂舞春秋  阅读(862)  评论(0)  编辑  收藏  举报