webwork2+FreeMarker 制作数据列表显示简单实例

刚刚接触了FreeMarker觉得不错
做了个小例子
首先建立个数据表里面有username,password两个字段自己随便加几条数据建立一个webwork  action    TestAction.java在xwork.xml里加入如下内容----------------------------------------     <action name="test" class="com.action.TestAction">      <result name="success" type="freemarker">/test.flt</result>    </action> ----------------------------------------TestAction.java代码如下--------------------------------------------------package com.action;
import com.opensymphony.xwork.ActionSupport;import java.util.*;import com.ResultGather;
public class TestAction extends ActionSupport { private List lis; private ResultGather rs; public List getLis() {  return this.lis; } public String execute() throws Exception  {  rs = new ResultGather();  lis = rs.selectRS("select * from userbasedatum");//数据结果我是用List,HashMap封装的,HashMap存的是单条记录  return SUCCESS; }}
-------------------------------------------------------------------------------------------------------------------ResultGather.java代码如下----------------------------------------------------------package com;
import conn.DBConnManager;//数据库连接池import java.sql.*;import java.util.*;
public class ResultGather { private String sql; public ResultGather() {  } public ResultGather(String sqlcom) {  this.sql=sqlcom; } public List selectRS(String sqlStr) {  this.sql = sqlStr;  return selectRS();  } public List selectRS() //数据结果在这里装入List和Map {  List rsall = new ArrayList();  DBConnManager conn = null;  Connection  con = null;  Statement stmt = null;  ResultSet rs = null;  Map rsTree;  try{   conn = DBConnManager.getInstance();   con = conn.getConnection("mssql");   stmt = con.createStatement();   rs = stmt.executeQuery(sql);   ResultSetMetaData rsmd = rs.getMetaData();   int numberOfColumns = rsmd.getColumnCount();   while(rs.next())   {   rsTree = new HashMap(numberOfColumns);    for(int r=1;r<numberOfColumns+1;r++)    {     rsTree.put(rsmd.getColumnName(r),rs.getObject(r));          }    rsall.add(rsTree);   }     }catch(java.lang.Exception ex){   ex.printStackTrace();  }finally{   try{    if(rs!=null)     rs.close();    if(stmt!=null)     stmt.close();    if(conn!=null)     conn.releaseConnection("mssql",con);   }catch(Exception e){    System.out.println(e);   }   }  return rsall; } }-----------------------------------------------------------------------------------------------test.flt代码如下-----------------------------------------------------------------------------------------<#list lis as x>${x.username},${x.password}<br></#list>     //freemarker用法网上有相关介绍-------------------------------------------------------------------------------------
OK 完成了 没有用到jsp<%.....%>和jsptag用这个例子做一点修改就可以具有分页用能了