EXT 上传文件时加上fileUpload: true出错的问题。

Ext做文件上传的时候发现，如果上传成功后从后台取返回信息，出现错误。

Js代码  

1. var importForm = new Ext.FormPanel({   
2.         labelAlign:'right',    
3.         buttonAlign:'right',    
4.         frame:true,   
5.         title: '',   
6.         bodyStyle:'padding:5px 5px',   
7.         width:450,   
8.         url:'importAction.do?method=importAlarmRule',   
9.         fileUpload: true,   
10.         items: [{   
11.              xtype: 'textfield',      
12.              fieldLabel: '<bean:message key="aloes.message.resource.import.file" />',      
13.              name: 'importFile',   
14.              width: 270,   
15.              height:20,    
16.              allowBlank:false,    
17.              blankText: '<bean:message key="aloes.message.resource.import.file.select" />',     
18.              inputType: 'file'//文件类型     
19.            }],    
20.              buttons: [{      
21.                  text: '<bean:message key="button.save" />',                  
22.                  handler: function() {      
23.                      importForm.getForm().submit({      
24.                          success: function(fileform, action){                     
25.                         if(action.result.success == 'true'){   
26.                                 Ext.Msg.alert('<bean:message key="info.header" />', '<bean:message key="aloes.message.resource.import.success" />',function(){   
27.                                     importWin.close();   
28.                                 });                                    
29.                             }else if(action.result.failure == 'formatError'){   
30.                                 Ext.Msg.alert('Error', '<bean:message key="aloes.message.resource.import.failed" />'+action.result.info);   
31.                             }   
32.                          },   
33.                          failure: function(){      
34.                            Ext.Msg.alert('<bean:message key="message.error" />', '<bean:message key="aloes.message.resource.import.failed" />');      
35.                          }      
36.                        });      
37.                  }                                
38.             },{      
39.                  text: '<bean:message key="button.cancel" />',      
40.                  handler: function() {   
41.                        importWin.close();   
42.                  }      
43.             }]   
44.         });   
45.     var importWin = new Ext.Window({   
46.                       id:'import-window',   
47.                           title: '<bean:message key="aloes.message.resource.import" />',      
48.                           closable:true,   
49.                           width:460,   
50.                           maximizable:false,   
51.                           modal:true,   
52.                           plain:true,          
53.               items:[importForm]   
54.                 });   
55.      importWin.show()；  

var importForm = new Ext.FormPanel({        labelAlign:'right',         buttonAlign:'right',         frame:true,        title: '',        bodyStyle:'padding:5px 5px',        width:450,        url:'importAction.do?method=importAlarmRule',        fileUpload: true,    items: [{         xtype: 'textfield',            fieldLabel: '<bean:message key="aloes.message.resource.import.file" />',            name: 'importFile',         width: 270,         height:20,          allowBlank:false,          blankText: '<bean:message key="aloes.message.resource.import.file.select" />',           inputType: 'file'//文件类型          }],      buttons: [{            text: '<bean:message key="button.save" />',                    handler: function() {            importForm.getForm().submit({            success: function(fileform, action){     if(action.result.success == 'true'){            Ext.Msg.alert('<bean:message key="info.header" />', '<bean:message key="aloes.message.resource.import.success" />',function(){            importWin.close();            });                     }else if(action.result.failure == 'formatError'){    Ext.Msg.alert('Error', '<bean:message key="aloes.message.resource.import.failed" />'+action.result.info);        }         },         failure: function(){              Ext.Msg.alert('<bean:message key="message.error" />', '<bean:message key="aloes.message.resource.import.failed" />');            }          });        }           },{            text: '<bean:message key="button.cancel" />',            handler: function() {            importWin.close();     }      }]   });var importWin = new Ext.Window({                  id:'import-window',                          title: '<bean:message key="aloes.message.resource.import" />',                             closable:true,                          width:460,                          maximizable:false,                          modal:true,                          plain:true,         items:[importForm]                }); importWin.show()；

 

后台的java代码往前台送数据的时候：

    resultStr.append("{'failure':'false','success':'true'}");   
    response.setContentType(" text/html;charset=utf-8 ");
    response.getWriter().print(resultStr);

 

contentType必须为：" text/html;charset=utf-8 "

而不能为：" text/xml;charset=utf-8 "

否则前台会报错。