simpletagdemo.java

来自「JavaWeb高级特性书中源代码」· Java 代码 · 共 27 行

package org.it315;
import java.io.IOException;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.SkipPageException;
import javax.servlet.jsp.tagext.JspFragment;
import javax.servlet.jsp.tagext.SimpleTagSupport;
public class SimpleTagDemo extends SimpleTagSupport 
{
	private String username;
	public void setUsername(String username)
	{
		this.username = username;
	}
	public void doTag() throws JspException, IOException 
	{
		if("zxx".equals(username))
		{
			JspFragment fragment = this.getJspBody();
			fragment.invoke(null);
		}
		else
		{
			getJspContext().getOut().write("用户名不正确");
			throw new SkipPageException();
		}
	}
}