FileUploadField 选择了一个文件，传到struts2的Action中，显示为null, 是什么问题？

我有个formpanel, 里面有个FileUploadField，选择一个文件后，传到struts2的Action中，但是从调试的显示中看到参数没有传过去，响应的结果为null.

我想请大家帮我看看代码怎么改，多谢了

MyDesktop.ScriptWindow = Ext.extend(Ext.app.Module, {
    id:'script-win',
    init : function(){
        this.launcher = {
            text: 'Script Selection',
            iconCls:'tabs',
            handler : this.createWindow,
            scope: this
        }
    },

    createWindow : function(){
        var desktop = this.app.getDesktop();
        var win = desktop.getWindow('script-win');
        if(!win){
            win = desktop.createWindow({
                id: 'script-win',
                title:'Script Selection',
                width:400,
                height:450,
                iconCls: 'tabs',
                shim:false,
                animCollapse:false,
                border:false,
                constrainHeader:true,
                layout: 'fit',
                items: new Ext.FormPanel({
         id:'script',
      labelWidth: 70,
      frame:true,
      bodyStyle:'padding:5px 5px 0',
      width: 350,

      items: [{
       xtype:'fieldset',
       title: 'Script Load',
       collapsible: true,
       autoHeight:true,
       defaults: {width: 210},
       defaultType: 'textfield',
       
       items :[new Ext.ux.form.FileUploadField({
        id: 'upload',
        name: 'upload',
        emptyText: '',
        fieldLabel: 'Script',
        allowBlank:false,
        buttonText: '',
        buttonCfg: {
         iconCls: 'tabs'
        }
       }),
       new Ext.form.ComboBox({
        id: 'mobile',
        name:'mobile',
        triggerAction:'all',
        fieldLabel: 'Phone',
        store: store,
        displayField: 'imsi',
        valueField: 'ip',
        mode:'local',
        allowBlank:false,
        emptyText: 'Select a phone'
       })
       ],
       buttons: [{
        type: 'submit',
        text: 'Associate',
        handler:function(){
         //Ext.Msg.alert("success", Ext.getCmp('upload').getValue());
         
         if(Ext.getCmp('script').getForm().isValid()){
          Ext.getCmp('script').getForm().doAction("submit",{
           url:"scriptLoad.action",
           method:"post",
           success:function(form,action){
            Ext.Msg.alert("Success",action.result.message);
           },
           failure:function(form, action){
            Ext.Msg.alert("Failer",action.result.message);
           }
          })
         }
        }
       },{
        text: 'Cancel',
        handler: function(){
         Ext.getCmp('upload').reset();
         Ext.getCmp('mobile').reset();
        }
       }]
      },
      {
       xtype:'fieldset',
       title: 'Script View',
       collapsible: true,
       height:250,
       labelWidth: 2,
       items : new Ext.form.TextArea({
        xtype:'textarea',
        name: 'script',
        anchor: '100% 100%',
        disabled: true,
        value:'loop->1:100, CALL -> <TO_BE_DEFINED>:5,  SLEEP -> 2000, END LOOP -> ID=1'
       })
      }]  
    })
            });
        }
        win.show();
    }
});

LoadScriptAction.java

public class LoadScriptAction extends ActionSupport{
 private File upload;
 private String uploadContentType;
 private String uploadFileName;
 private String mobile;
 private String message;
 
 public String getMessage() {
  return message;
 }
 public void setMessage(String message) {
  this.message = message;
 }
 public File getUpload() {
  return upload;
 }
 public void setUpload(File upload) {
  this.upload = upload;
 }
 public String getUploadContentType() {
  return uploadContentType;
 }
 public void setUploadContentType(String uploadContentType) {
  this.uploadContentType = uploadContentType;
 }
 public String getUploadFileName() {
  return uploadFileName;
 }
 public void setUploadFileName(String uploadFileName) {
  this.uploadFileName = uploadFileName;
 }
 public String getMobile() {
  return mobile;
 }
 public void setMobile(String mobile) {
  this.mobile = mobile;
 }
 
 public String execute() throws Exception{
  message = this.uploadFileName + " " + this.mobile;
  return SUCCESS;
 }
}

<struts> 
    <include file="struts-default.xml"/>  
        
    <package name="script" extends="json-default"> 
        <action name="scriptLoad" class="android.action.LoadScriptAction"> 
            <result type="json"/> 
        </action>  
    </package>
 
</struts> 

调试显示： (我要传两个参数过去，一个是我选择的文件，一个是mobile的号码。为什么这里只显示传了一个参数过去？）

响应：

{"message":"null 0610550019","mobile":"0610550019","upload":null,"uploadContentType":null,"uploadFileName":null}

你用application/x-www-form-urlencoded
传输FileUpload文件上传时肯定不行啊，你得设置 multipart/form-data, 这样不论是文本还是文件都可以的，不过在Ext中怎么设置成multipart/form-data 你自己找一下。

不懂。。。。是不是因为默认的参数类型是text，所以文件没上传上去
[code="java"]items: [{
xtype:'fieldset',
title: 'Script Load',
collapsible: true,
autoHeight:true,
defaults: {width: 210},
defaultType: 'textfield',[/code]

http://kangsoft.iteye.com/blog/677773

楼主看一下这个

[code="java"]
upload = Ext.extend(Ext.Window,{
title : '批量导入',
width : 350,
height : 80,
autoHeight : true,
modal : true,
collapsible : true,
frame : true,
resizable : false,
buttonAlign : 'center',
initComponent : function(){
Ext.apply(this,{
items : [{
xtype : 'form',
id : 'form',
labelWidth : 70,
labelAlign : 'right',
border : false,
fileUpload : true,
baseCls : 'x-plain',
bodyStyle : 'padding : 5px 5px 0',
defaults : {
anchor : '100%',
magTarget : 'side'
},
items : [{xtype : 'textfield',inputType : 'file',name:'upload',fieldLabel : '文件上传'}]
}]
});
upload.superclass.initComponent.apply(this,arguments);
}
});
[/code]