Struts2剔除了Struts中對(duì)于form的應(yīng)用，而action（Strus2）的action則綜合了action，和actionForm的應(yīng)用。但很多的應(yīng)用中，都需要對(duì)輸入進(jìn)行驗(yàn)證，Struts中是將輸入給表單，然后取得表單數(shù)據(jù)進(jìn)行驗(yàn)證。雖然Struts2中取消了form的應(yīng)用，這種方式還可以通過(guò)靈活地轉(zhuǎn)化來(lái)繼續(xù)使用。下面是兩個(gè)Struts2中Form提交的例子，原理是相同的。

例一

< SCRIPT> 
function save(){  
    var url="< c:out value='${cpath}'/>/publication/mydraftupdateAction.action?param=1" 
      document.userForm.action=url;  
   document.userForm.method="post";  
   document.userForm.submit();  
}     
function tosubmit(){  
   
    var url="< c:out value='${cpath}'/>/publication/mydraftupdateAction.action?param=0" 
    document.userForm.action=url;  
   document.userForm.method="post";  
   document.userForm.submit();  
}  
< /SCRIPT> 
   
< form name="userForm" method="post"> 
    < input type="hidden" name="publication.id" id="id" value="${publication.id}" /> 
< table width="95%" align=center cellspacing="1" class="contentTable"> 
    < tr> < td class="low" width="20%"> 
        稿件標(biāo)題  
        < /td> 
        < td class="lowest" width="30%"> 
    < input type="text" name="publication.title"   id="title"value='${publication.title}'> 
        < /td> 
< /tr> 
< /table> 
< table width="95%" border="0" align="center" cellpadding="4"                cellspacing="1"> 
    < tr> 
        < td align="right"> 
    < input name="button" type="button" class="button01" 
        onmouseover="makevisible(this,0)" 
            nmouseout="makevisible(this,1)" onclick="save()" value="保存" 
            style="cursor: hand;"> 
    < input name="button" type="button" class="button01" 
            onmouseover="makevisible(this,0)" 
            onmouseout="makevisible(this,1)" onclick="tosubmit()" value="提交" 
            style="cursor: hand;"> 
    < input name="button" type="button" class="button01" 
            onmouseover="makevisible(this,0)" 
            onmouseout="makevisible(this,1)" onclick="history.back()" 
            value="返回" style="cursor: hand;"> 
        < /td> 
        < /tr> 
    < /table> 

例二

< SCRIPT type="text/javascript"> 
       function addsave()  
       {  
       var name = document.getElementById('subject').value.trim();  
       //  var depName = document.getElementById('depName').value.trim();  
           if(name.length==0)  
           {  
               alert('講話主題不能為空或者為空格！')  
               return false;  
           }  
           if(name.length!=0)  
           {  
               if (name.length< 6||name.length>30)  
               {  
                  alert('講話主題的長(zhǎng)度在6至30之間！')  
                  return false;  
               }  
           }  
           var url="< c:out value='${cpath}'/>/information/speakaddSaveAction.action" 
            document.Form.action=url;  
            document.Form.method="post";  
            document.Form.enctype="multipart/form-data" 
            document.Form.submit();  
       }  
       function back()  
       {  
           var url="< c:out value='${cpath}'/>/information/speaklistAction.action" 
            document.Form.action=url;  
            document.Form.method="post";  
            document.Form.submit();  
       }  
    < /SCRIPT> 
         
...  
   
< form name="Form" method="post" enctype="multipart/form-data"> 
           < table width="95%" border="0" align="center" cellpadding="4" 
              class="resultTable" cellspacing="1"> 
              < tr class="resultHead"> 
                  < td width="25%" class="leftText"> 
                     講話主題  
                  < /td> 
                  < td width="25%" class="lowest"> 
                     < s:textfield id ="subject" name="speak.subject" theme="simple" /> 
                  < /td> 
                    
...  
   
              < /tr> 
           < /table> 
           < /form> 
           < table width="95%" border="0" align="center"> 
              < tr> 
                  < td width="80%">< /td> 
                  < td width="10%" align="right"> 
                     < input name="button" type="button" class="buttonOn" 
                         onmouseover="makevisible(this,0)" 
                         onmouseout="makevisible(this,1)" onclick="addsave()" value="保存" 
                         style="cursor: hand;"> 
                  < /td> 
                  < td width="10%" align="right"> 
                     < input name="button" type="button" class="buttonOn" 
                         onmouseover="makevisible(this,0)" 
                         onmouseout="makevisible(this,1)" onclick="back()" value="返回" 
                         style="cursor: hand;"> 
                  < /td> 
              < /tr> 
           < /table>   

總結(jié)：先給form命名（useform），點(diǎn)擊"保存"觸發(fā)onclick="save()"，save（）方法指定執(zhí)行的action的rul，和將整個(gè)（useform）提交submit。（（將整個(gè)（useform）提交submit）不能少，不然會(huì)不能提交）同理 （onclick="tosubmit()" value="提交"）也一樣。

以上，介紹了Struts2中Form提交的方法兩則。

本文出自 “南湖礦工J2EE技術(shù)博客” 。

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