dwr简介--一个例子(续二)

页面部分有几个重要的文件：
login.jsp -- 登陆画面
showtable.jsp -- 显示table的画面
showtable.js -- 显示table页用到的javascript
下面是login.jsp

< body >
<!--  
    下面是要用到了js，UserLogic.js是自己的，是有dwr根据你编写的dwr.xml文件的内容生成的
    另外两个是dwr自带的。
  -->
< script  type ='text/javascript'  src ='dwr/interface/UserLogic.js'></script>
<script type ='text/javascript'  src ='dwr/engine.js'></script>
<script type ='text/javascript'  src ='dwr/util.js'></script>
<script type ='text/javascript'>
function init() {
      DWRUtil.useLoadingMessage();
}

<!-- 
    在按钮提交时调用这个方法。注意这里的username,password,loginBean在这个jsp页面中
    是没有显示的写出来的。这三个东西是Username输入框，Password输入框和Form。
    他们的名字是Struts自己生成的，所以你必须知道struts生成html的命名规则
 -- >
function  sumbit(){
     return  UserLogic.validate(show,$( " username " ).value,$( " password " ).value);
}

function  show(flag){
     if (flag == false ){
         alert( " Invalid Username and Password! " );
    }  else  {
        $( " loginBean " ).submit();
    }
}
</ script >
< html:form  action ="/login" >
     < table  border ="0"  width ="100%"  id ="table1"  cellspacing ="0"  cellpadding ="0" >
         < tr >
             < td  align ="right" > Username: </ td >
             < td >< html:text   property ="username"  size ="30" /></ td >
         </ tr >
         < tr >
             < td  align ="right" > Password: </ td >
             < td >< html:password  property ="password"  value ="password"  size ="30" /></ td >
         </ tr >
     </ table >
     < div  align ="center" >
         < input  type ="button"  value ="Submit"  name ="button1"  onclick ="sumbit()" >
     </ div >
</ html:form >

</ body >

下面是showtable.jsp

< body  onload ="init()" >
< script  type ='text/javascript'  src ='dwr/interface/TableModel.js'></script>
<script type ='text/javascript'  src ='dwr/engine.js'></script>
<script type ='text/javascript'  src ='dwr/util.js'></script>
<script type ='text/javascript'  src ='showtable.js'></script>
<script type ='text/javascript'  src ='mm_script.js'></script>
<script type ='text/javascript'  src ='wz_tooltip.js'></script>

<!--这是显示表格的层-- >
< div align = " center "  id = " base "  class = " base " >
< table width = " 80% "  cellspacing = " 0 "  cellpadding = " 0 "  border = " 1 "
    bordercolor = " #6699FF "  class = " body " >
     < tr >
         < th class = " header1 " >< a href = " # "  onclick = " sort(0) "   >  column1  </ a >< span id = " arrow0 "  class = " arrow " ></ span ></ th >
         < th class = " header1 " >< a href = " # "  onclick = " sort(1) "   >  column2  </ a >< span id = " arrow1 "  class = " arrow " ></ span ></ th >
         < th class = " header1 " >< a href = " # "  onclick = " sort(2) "   >  column3  </ a >< span id = " arrow2 "  class = " arrow " ></ span ></ th >
         < th class = " header1 " > Operation </ th >
     </ tr >
     < tbody id = " rows " >
     < logic:iterate id = " row "  name = " tableRows " >
         < tr >
             < td >< p align = " center " >< bean:write name = " row "  property = " col1Value "   /></ td >
             < td >< p align = " center " >< bean:write name = " row "  property = " col2Value "   /></ td >
             < td >< p align = " center " >< bean:write name = " row "  property = " col3Value "   /></ td >
             < td >< p align = " center " >
                 < a href = " # "  onclick = " showUpdateLayer(<bean:write name= " row "  property= " col1Value "  />) " >
                     < img src = " edit.gif "  border = " 0 " />
                 </ a >
                 |
                 < a href = " # "  onclick = " deleteRow(<bean:write name= " row "  property= " col1Value "  />) " >
                     < img src = " remove.gif "  border = " 0 " />
                 </ a >
             </ td >
         </ tr >
     </ logic:iterate >
     </ tbody >
</ table >
< table >
     < tr >
         < td id = " addbutton " >
             < a href = " # "  onclick = " showAddLayer() " >< img src = " add.gif "  border = " 0 "   /></ a >
         </ td >
         < td id = " pager " >
         <!-- 这是分页 -->
             < table >
                 < tr >
                     < td > [ </ td >
                     < logic:iterate id = " pager "  name = " pagers " >
                         < td >< a href = " # "  onclick = " changePage(<bean:write name= " pager "  />) " >< bean:write name = " pager "   /></ a ></ td >
                     </ logic:iterate >
                     < td > ] </ td >
                 </ tr >
             </ table >
         </ td >
     </ tr >
</ table >
</ div >
<!-- 这是显示更改记录的对话框的层 -->
< div align = " center "  id = " dialog "  class = " dialog " >
     < form name = " addForm " >
         < table border = " 0 "  width = " 100% "  height = " 100% "  cellspacing = " 0 "  cellpadding = " 0 " >
             < tr >
                 < td align = " right "  height = " 25 "  background = " header.gif "  colspan = " 2 " >
                     < img border = " 0 "  src = " close.gif "  width = " 14 "  height = " 15 "  onmouseover = " this.src='close_over.gif' "  onmouseout = " this.src='close.gif' "  onclick = " showBase() "  
                    onMouseDown = " MM_dragLayer('dialog','',0,0,0,0,true,false,-1,-1,-1,-1,545,105,100,'',false,'') " >
                 </ td >
             </ tr >
             < tr >
                 < td align = " right "  width = " 70 " > PK: </ td >
                 < td >< span id = " col1Value "  class = " pk " ></ span ></ td >
             </ tr >
             < tr >
                 < td align = " right " > Col2: </ td >
                 < td >< input type = " text "  name = " col2Value "  size = " 20 "  class = " text " ></ td >
             </ tr >
             < tr >
                 < td align = " right " > Col3: </ td >
                 < td >< input type = " text "  name = " col3Value "  size = " 20 "  class = " text " ></ td >
             </ tr >
             < tr >
                 < td colspan = " 2 "  align = " center " >
                     < input type = " button "  value = " save "  name = " addButton "  class = " button "  onclick = " saveRow() " >
                     < input type = " button "  class = " button "  value = " cancel "  name = " kickAddButton "  onclick = " showBase() " >
                 </ td >
             </ tr >
         </ table >
     </ form >
</ div >
<!-- 这是显示等待loading的层 -->
< div id = " loading "  class = " loading " >
     < table border = " 0 "  width = " 100% "  height = " 100% "  cellspacing = " 0 "  cellpadding = " 0 " >
         < tr >
             < td class = " loading " > Loading </ td >
         </ tr >
     </ table >
</ div >
</ body >

我这里用了另外两个js库，一个是mm_script.js：Macromedia的拖动层功能。另一个是wz_tooltip.js：toolTip库。不过这两个库在我的程序中不起作用。我也不知道怎么回事。
至于showtable.js。太长了，不贴在这里了。在原程序中有的。我也写了不少注释。
对了别忘了下载源程序。为了减少体积，我把Struts的jar都拿走了，这个东西大家一般都有。现在里面都dwr和jdts的jar包。所以你要想运行的话需要把struts的jar包放到WEB-INF\lib下。
ant和db的东西也都有。需要在ModelOneDAO.java中把jdbc的url，user ，password改一下。
我这个程序还有一些bug，但是现在我没有时间改了。大家将就一下吧。
http://www.blogjava.net/Files/mstar/StrutsAjax-min.rar