package demo;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.JspFragment;
import javax.servlet.jsp.tagext.SimpleTagSupport;
import java.io.IOException;
import java.io.StringWriter;

/**
 * Created by Administrator on 2016/12/8.
 */
public class TagDemo extends SimpleTagSupport{
    private String color;

    public String getColor() {
        return color;
    }

    public void setColor(String color) {
        this.color = color;
    }

    @Override
    public void doTag() throws JspException, IOException {
        JspFragment jf =  this.getJspBody();
        StringWriter sw = new StringWriter();//开启缓存区
        jf.invoke(sw);
        String str = "<font color='"+this.color+"'>"+sw.toString()+"</font>";
        this.getJspContext().getOut().print(str);
    }
}