csaimembertag.java

来自「JavaWeb标签应用开发（随书光盘）为方便读者阅读本书和调试程序」· Java 代码 · 共 55 行

package csai;

import java.util.ArrayList;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.DynamicAttributes;
import javax.servlet.jsp.tagext.TagSupport;

/**
 * @author dengziyun
 * csaiMember标签的实现类
 */
public class csaiMemberTag extends TagSupport  
	implements DynamicAttributes {
	private String fontColor="#000000";//字体颜色,默认黑色
	//用来接收动态属性
	private ArrayList keys = new ArrayList();
	private ArrayList values = new ArrayList();
    //----标签开始时调用此方法-------
    public int doStartTag(){
        try{
            JspWriter out=pageContext.getOut();
            out.print("<font color=\""+fontColor +
            		   "\" size=\"3\">中国系统分析员顾问团会员名册</font>");
            out.print("<br>");
            for (int i = 0 ; i < keys.size() ; i++) {
            	out.print("接收到动态属性，属性名为："+keys.get(i));
            	out.print(",值为："+values.get(i)+"<br>");
            }
        }catch(Exception e){
            System.out.println(e);
        }
        return EVAL_BODY_INCLUDE;
    }
	//----标签结束时调用此方法------
	public int doEndTag() throws JspException {
		keys.clear();
		values.clear();
		return super.doEndTag();
	}
    public String getFontColor() {
        return fontColor;
    }
    public void setFontColor(String fontColor) {
        this.fontColor = fontColor;
    }
	//------ 设置动态属性------
	public void setDynamicAttribute(String uri, String name, Object value)
		throws JspException {
		keys.add(name);
		values.add(value);		
	}
}