大连市中考满分作文-struts2自定义标签实现翻页查询

int pageNumber = Integer.parseInt(pageNumberStr);
while (pageNumber > pageCount) {
pageNumber--;
}
page.setCurrentPage("" + pageNumber);
<taglib>
<tlib-version>1.0</tlib-version>
<jsp-version>1.2</jsp-version>
<short-name>basetag</short-name>
<!-- 分页标签定义 -->
<tag>
<name>getRequestParam</name>
HttpServletRequest request = (HttpServletRequest) pageContext.getRequest();
request.getSession().setAttribute("pageTagId", id);
return super.doStartTag();
List<ComplaintView> complaintViewList = new ArrayList<ComplaintView>();
copyProperties(complaintViewList, cl);
request.setAttribute("complaintViewList", complaintViewList);
<tag-class>tag.GetRequestParam</tag-class> <======自定义标签类
<body-content>empty</body-content>
<attribute>
<name>name</name>
<required>true</required>
<rtexprvalue>false</rtexprvalue>
<description>The name of the Request Param.</description>
</attribute>
<attribute>
<name>id</name>
<required>false</required>
//step3,执行分页查询 传入开始索引和页面记录条数***************************
List<Complaint> cl = complaintService.findComplaints(
page.getStartRow(), page.getPageSize());
* @param request 请求
* @param count 记录总数
* @param pageSize 每页记录数
* @return
*/
public Page paging(HttpServletRequest request, int count, int pageSize) {
}
public String getName() {
return name;
}
public void setName(String name) {
= name;
}
public String getId() {
return id;
}
private static final long serialVersionUID = 1L;
private String name;
private String id;
public GetRequestParam() {
}
public int doStartTag() throws JspException {
} else {
page = (Page) request.getSession().getAttribute("sp_list_sp" + request.getServletPath());
page.reInit(count);
int pageCount = page.getPageCount();
String pageTagId = (String) request.getSession().getAttribute("pageTagId");
// System.out.println("pageTagId:"+pageTagId);
Page page;//分页对象
import java.util.Enumeration;
import javax.servlet.http.HttpServletRequest;
import ng.StringUtils;
/**
* 分页工具类
* @author xin
}
return page;
}
======================================================
6，分页工具类 Page
======================================================
package util;
String pageNumberStr = request.getParameter("pageNumber");
if (StringUtils.isBlank(pageNumberStr)) {
page = new Page(count,pageSize);
request.getSession().setAttribute("sp_list_sp" + request.getServletPath(), page);
import javax.servlet.jsp.JspTagException;
import javax.servlet.jsp.tagext.BodyTagSupport;
/**
* 自定义标签类
*/
public class GetRequestParam extends BodyTagSupport {
2，在jsp页面引入 base.tld
<%@ taglib prefix="b" uri="/WEB-INF/tld/base.tld" %>
=========================================================
3,在需要翻页处使用
<b:getRequestParam name="navbar" />
=========================================================
4，自定义标签类tag.GetRequestParam
=========================================================
package tag;
*/
public class Page {
private static int DEFAULT_PAGESIZE = 10; // 默认页面大小
private static int DEFAULT_PAGE = 1; // 默认第一页
private int currentpage = 1;
import java.io.IOException;
import javax.servlet.ServletRequest;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.jsp.JspException;
//step4,获得分页标签内容***************************
String bar = page.getNavBar(request); //关键方法
request.setAttribute("navbar", bar);
}
/**
* 分页方法 计算页面参数，被分页查询调用， 存在于BaseAction中
pageContext.getOut().write(request.getAttribute(name) + "");
} catch (IOException ex) {
throw new JspTagException("GetRequestParam 异常");
}
return super.doEndTag();
<rtexprvalue>false</rtexprvalue>
<description>Unique identifier.</description>
</attribute>