testattributetag.java

JavaWeb高级特性书中源代码

package org.it315;
import java.io.IOException;
import java.text.DateFormat;
import java.util.Date;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.DynamicAttributes;
import javax.servlet.jsp.tagext.TagSupport;
public class TestAttributeTag extends TagSupport
{
	private Date attr;
	public void setAttr(Date attr)
	{
		this.attr = attr;
	}	
	public int doStartTag() throws JspException 
	{
		JspWriter out = pageContext.getOut();

		try 
		{
			out.write("从属性attr中得到当前日期为:" + 
					   DateFormat.getDateInstance().format(attr));
		}
		catch (IOException e) 
		{
			e.printStackTrace();
		}
		return super.doStartTag();
	}
}