JSP Tag

1package demo;
2
3import javax.servlet.jsp.JspException;
4import javax.servlet.jsp.tagext.JspFragment;
5import javax.servlet.jsp.tagext.SimpleTagSupport;
6import java.io.IOException;
7import java.io.StringWriter;
8
9/**
10 * Created by Administrator on 2016/12/8.
11 */
12public class TagDemo extends SimpleTagSupport{
13	private String color;
14
15	public String getColor() {
16		return color;
17	}
18
19	public void setColor(String color) {
20		this.color = color;
21	}
22
23	@Override
24	public void doTag() throws JspException, IOException {
25		JspFragment jf =  this.getJspBody();
26		StringWriter sw = new StringWriter();//开启缓存区
27		jf.invoke(sw);
28		String str = "<font color='"+this.color+"'>"+sw.toString()+"</font>";
29		this.getJspContext().getOut().print(str);
30	}
31}