[计算机]dwr的一个实例.doc

dwr的一个实例第一：新建项目第二:加载dwr.jar包第三:修改web.xml文件- dwr-invoker org.directwebremoting.servlet.DwrServlet debug true activeReverseAjaxEnabled true initApplicationScopeCreatorsAtStartup true maxWaitAfterWrite -1 1 dwr-invoker /dwr/* index.jsp -第四:在WEB-INF目录下 新建dwr.xml文件 配置如下:- -第五:建立后台代码:-bean-package cn.lh.bean.dwr;public class UserInfo private int id; private int areaID; private String name; private int fixFee; public int getId() return id; public void setId(int id) this.id = id; public int getAreaID() return areaID; public void setAreaID(int areaID) this.areaID = areaID; public String getName() return name; public void setName(String name) = name; public int getFixFee() return fixFee; public void setFixFee(int fixFee) this.fixFee = fixFee; /for debug public String toString() return id: +id+ areaID:+areaID+ name:+name+ fixFee:+fixFee; -逻辑代码被dwr暴露的代码-package cn.lh.dwr;import java.util.ArrayList;import java.util.HashMap;import java.util.Iterator;import java.util.List;import java.util.Map;import java.util.Random; import cn.lh.bean.dwr.UserInfo;public class UserManager2 /用于生成用户唯一的ID private static int userID = 0 ; /区域列表在装载类时 初始化 private static Map area = new HashMap() ; static for(int i=0;i4;i+) area.put(1, a) ; area.put(2, b) ; area.put(3, c) ; area.put(4, d) ; /返回区域列表 public Map getArea() return area ; /* * 根据地区代号提取用户列表 */ / 根据地区代号提取用户列表 public List getUserByAreaID(int areaID) System.out.println(AreaID : +areaID); List userList=new ArrayList(); /模拟生成用户列表 int count=new java.util.Random().nextInt(5)+4; for(int i=1;i=count;i+) userID+; UserInfo us=new UserInfo(); us.setId(userID); us.setAreaID(areaID); us.setName(第+userID+个用户); us.setFixFee(100*i); userList.add(us); return userList; /修改用户信息 public boolean updateUser(UserInfo userinfor) return true ; public static void main(String args) -第六: 建立jsp文件和相关js文件 及 添加 dwr 相关js文件-直接看jsp文件- base href=/blog/ My JSP userinfor_manager.jsp starting page /定义一个数组，用以缓存表中的用户信息 var userCach = ; function fill_select_user_area() UserManager2.getArea(callback);function callback(data) DWRUtil.removeAllOptions(select_user_area); DWRUtil.addOptions(select_user_area, data);function displayselectUserArea(sua) UserManager2.getUserByAreaID(sua.value, call_table); function call_table(data) dwr.util.removeAllRows(userTable); var dtable = document.getElementById(userTable); for (var i = 0; i data.length; i+) var theUser = datai; var eltr = dtable.insertRow( -1 ); var userTableRowId = 1000 * i; eltr.setAttribute(id,userTableRowId); var idTd = eltr.insertCell( -1 ); idTd.innerHTML= theUser.id ; var areaTd = eltr.insertCell( -1 ); areaTd.innerHTML=theUser.areaID ; var nameTd = eltr.insertCell( -1 ); nameTd.innerHTML=theU ; var fixFeeTd = eltr.insertCell( -1 ); fixFeeTd.innerHTML=theUser.fixFee ; var editor = eltr.insertCell(-1); var EditorButton = ; var DeleteButton = ; editor.innerHTML = EditorButton+ +DeleteButton ; userCachtheUser.id = theUser ; function deleteRowbyid(userid,rowid) var user = userCachuserid ; if(window.confirm(确定删除++?) var rowToDelete = document.getElementById(rowid); var t_body = document.getElementById(userTable); t_body.removeChild(rowToDelete) ; /把要编辑的先显示出来 function editoruser(userid) document.getElementById(editorID).style.visibility =visible ; var theUser = userCachuserid ; var demoUser = spanuserid:theUser.id ,iptname:theU,iptarea:theUser.areaID,iptfixFee:theUser.fixFee ; dwr.util.setValues(demoUser); /修改用户信息 function updateUser() var userinfor = new Object(); userinfor.id =dwr.util.getValue(spanuserid); = dwr.util.getValue(iptname); userinfor.areaID = dwr.util.getValue(iptarea); userinfor.fixFee = dwr.util.getVa