summaryformtag.java

一个用struts tiles的在线影院web系统

package com.eline.common.taglib;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.TagSupport;
import javax.servlet.jsp.JspTagException;
import java.io.IOException;
import javax.servlet.jsp.*;

public class SummaryFormTag extends TagSupport {

	private static final long serialVersionUID = -3257059150178305198L;

	private ListTag listTag;

	public SummaryFormTag() {
		listTag = null;
	}

	public int doEndTag() throws JspException {
		return EVAL_PAGE;
	}

	public int doStartTag() throws JspException {
		listTag = (ListTag) TagSupport.findAncestorWithClass(this, ListTag.class);
        if(listTag == null)
            throw new JspTagException("产生列表摘要信息标记失败(没有相应列表标记)!");
        
        try {
        	JspWriter jspWriter = pageContext.getOut();
        	jspWriter.print("页数:" + (listTag.pageIndex + 1) + "/" + listTag.totalPages + " (" + listTag.totalRecords + "项)");
        	// jspWriter.print("共" + listTag.totalRecords + "条记录,共" + listTag.totalPages + "页;第" + (listTag.pageIndex + 1) + "页");
        } catch (IOException e) {
        	throw new JspException("SummaryTag: error printing.");
        }
        return SKIP_BODY;
	}
}