pagetag.java

自已个人写的一款比较好的分页java+javabean+struts标签完成的自定义分页

package cn.com.thinkbank.tags;

import java.io.IOException;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.TagSupport;

import cn.com.thinkbank.bean.PageBean;

public class PageTag extends TagSupport {
	private String uri;

	public void setUri(String uri) {
		this.uri = uri;
	}

	public int doEndTag() throws JspException {

		JspWriter out = pageContext.getOut();

		HttpServletRequest request = (HttpServletRequest) pageContext
				.getRequest();
		HttpServletResponse response = (HttpServletResponse) pageContext
				.getResponse();
		pageContext.getServletContext();
		PageBean pageBean = (PageBean) request.getAttribute("pageBean");

		try {

			//out.println(uri);
			out.println("总记录数：" + pageBean.getTotalResults());
			out.println("当前页/总页：" + pageBean.getCurrentPage() + "/"
					+ pageBean.getTotalPages());
			out.println("<a href=\"" + request.getContextPath()
					+ uri+"?page=1\">首页</a>");

			if (pageBean.hasPreviousPage()) {
				out.println("<a href=\"" + request.getContextPath()
						+ uri+"?page="
						+ (pageBean.getCurrentPage() - 1) + "\">上一页</a>");
			} else {
				out.println("上一页");
			}

			if (pageBean.hasNextPage()) {
				out.println("<a href=\"" + request.getContextPath()
						+ uri+"?page="
						+ (pageBean.getCurrentPage() + 1) + "\">下一页</a>");
			} else {
				out.println("下一页");
			}

			out.println("<a href=\"" + request.getContextPath()
					+ uri+"?page=" + pageBean.getTotalPages()
					+ "\">末页</a>");
			out
					.println("转到<select onchange=\"self.location='?page='+this.options[this.selectedIndex].value;\">");
			for (int i = 1; i <= pageBean.getTotalPages(); i++) {
				out.println("<option value=\"" + i + "\""
						+ (i == pageBean.getCurrentPage() ? " selected" : "")
						+ ">第" + i + "页</option>");
			}
			out.println("</select>页");
		} catch (IOException e) {
			e.printStackTrace();
		}

		return EVAL_PAGE;
	}
}