fragmentdemo.java

JavaWeb高级特性书中源代码

package org.it315;
import java.io.IOException;
import javax.servlet.jsp.tagext.JspFragment;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.SimpleTagSupport;

public class FragmentDemo extends SimpleTagSupport
{
	private JspFragment frag1;
	private JspFragment frag2;	
	public void setFrag1(JspFragment frag1)
	{
		this.frag1 = frag1;
	}
	public void setFrag2(JspFragment frag2)
	{
		this.frag2 = frag2;
	}
	public void doTag() throws JspException, IOException 
	{
		getJspContext().getOut().write("标签第一个属性的执行结果为:");
		frag1.invoke(null);
		getJspContext().getOut().write("标签第二个属性的执行结果为:");
		frag2.invoke(null);
		JspFragment fragment = getJspBody();
		if(fragment != null)
		{
			getJspContext().getOut().write("标签体内容为:");
			getJspBody().invoke(null);
		}
	}
}