display table外部分页，支持外部排序

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display table外部分页，支持外部排序

操作步骤:

第一部:

web.xml

<!--引入标签-->

 

<jsp-config>
  <taglib>

   <taglib-uri>http://jsptags.com/tags/navigation/pager</taglib-uri>

   <taglib-location>/WEB-INF/displaytag-11.tld</taglib-location>

   </taglib>

 </jsp-config>

 

<!--配置，分页后台业务处理servlet-->

<servlet-mapping>
  <servlet-name>CustomerServlet</servlet-name>
  <url-pattern>/servlet/CustomerServlet</url-pattern>
 </servlet-mapping>

<!--欢迎页面-->
 <welcome-file-list>
  <welcome-file>index.jsp</welcome-file>
 </welcome-file-list>

欢迎页面 index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'index.jsp' starting page</title>
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">

  </head>
  
  <body>
    <h1><a href="<%=request.getContextPath()%>/servlet/CustomerServlet"><%=request.getContextPath()%>/servlet/CustomerServlet</a></h1>
  </body>
</html>

result.jsp

result.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib  prefix="display" uri="http://displaytag.sf.net" %> 
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'index.jsp' starting page</title>
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->

			<link rel="stylesheet" href="<%=request.getContextPath()%>/css/print.css" type="text/css" media="print" />
		<link rel="stylesheet" href="<%=request.getContextPath()%>/css/screen.css" type="text/css" media="screen,print" />  
  </head>
  
  <body>

    	<display:table name="list" 
				class="its" id="item" name="list" sort="external"  pagesize="${pageSize}" partialList="true" size="resultSize"  requestURI="/displaypagination/servlet/CustomerServlet">  
			  
			    <display:column property="id"  title="I"  ></display:column>
				<display:column property="numcuguid"  title="ID" sortable="true" ></display:column>
                <display:column property="vc2cuname"  title="vc2cuname" sortable="true"></display:column>
				<display:column property="vc2cucode" title="vc2cucode"  sortable="true"></display:column>
			</display:table>	
    
  </body>
</html>

servlet

com.tht.customer.servlet.CustomerServlet.java

package com.tht.customer.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.displaytag.pagination.Pagination;
import org.displaytag.tags.TableTagParameters;
import org.displaytag.util.ParamEncoder;

import com.tht.common.db.base.BaseDao;
import com.tht.common.oracle.paging.PageTools;
import com.tht.customer.dao.CustomerDao;
import com.tht.customer.vo.CustomerVO;

public class CustomerServlet extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public CustomerServlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		
		//int resultSize=100;//总页数
		int pageSize=5;//每页显示的记录数
		
		//得到当前页的字符串
		String strP=request.getParameter((new ParamEncoder("item").encodeParameterName(TableTagParameters.PARAMETER_PAGE)));
	
		//请求的需要显示的页码数
		int currentPage=0;
	    if(strP==null){
	    	currentPage=1;
	    }else{
	    	currentPage=Integer.parseInt(strP);
	    }
		//当前页
		System.out.println("currentPage:"+currentPage);
		
		
		//排序功能
		int sortIndex=-1;//排序索引列,第一列为0
		int orderIndex=-1;//1为升序，2为降序

		
		String strSort= request.getParameter((new ParamEncoder("item").encodeParameterName(TableTagParameters.PARAMETER_SORT)));
		if(strSort==null){
			 sortIndex=-1;
		}else{
			sortIndex=Integer.parseInt(strSort);
		}
		System.out.println("sortIndex:"+sortIndex);
		
		String strOrder= request.getParameter((new ParamEncoder("item").encodeParameterName(TableTagParameters.PARAMETER_ORDER)));
		
		if(strOrder==null){
			orderIndex=-1;
		}else{
			orderIndex=Integer.parseInt(strOrder);
		}
		System.out.println("orderIndex:"+orderIndex);
		
		
		
		//总记录数
        int totalCount=new BaseDao<CustomerServlet>().getTotalCount("select count(*) from ct_cuinfo");
	
        PageTools pagination=new PageTools(currentPage,pageSize,totalCount);
		
        pagination.setSortIndex(sortIndex);
        pagination.setOrderIndex(orderIndex);

      
	
		
		
		CustomerDao customerDao=new CustomerDao();
		List<CustomerVO> list=customerDao.getList(pagination);
		System.out.println("==============servlet============");
		for(CustomerVO vo:list){
			System.out.println(vo.getId());
		}
		request.setAttribute("list", list);

		
		request.setAttribute( "pageSize" , pageSize); // 每页显示的条数
		request.setAttribute( "resultSize" , totalCount); // 将总记录数保存成Intger实例保存在request中
		request.getRequestDispatcher("/result.jsp").forward(request, response); 
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html");
		PrintWriter out = response.getWriter();
		out
				.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
		out.println("<HTML>");
		out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");
		out.println("  <BODY>");
		out.print("    This is ");
		out.print(this.getClass());
		out.println(", using the POST method");
		out.println("  </BODY>");
		out.println("</HTML>");
		out.flush();
		out.close();
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}