Extjs File Upload

Functional requirements:

Add a button on the mastplan page to upload an excel file and save the file content to the database before saving it.

 

Specific implementation:

 

Pai_^ first.

 
 

 

 
 

Jsp page code:

Add a button in the tbar toolbar: click this button to bring up a file upload window.

 

[Java]
, {Id: "upload_excel", xtype: "button", cls: "x-btn-icon", icon: "/_ static/icon/upload_excel.png", tooltip: "upload", scope: this, handler: function () {win_upload.show ();}}
 
 
Var win_upload = new Ext. Window ({
Title: 'uploadfile ',
Width: 450,
Height: 180,
Modal: true,
X: 100,
Y: 50,
Layout: 'form ',
AutoScroll: true,
Constrain: true,
BodyStyle: 'padding: 10px 10px 10px 10px ;',
Items: form,
Buttons :[{
Text: 'Confirm upgrade ',
Handler: function (){
If (form. form. isValid ()){
If (Ext. getCmp ('userfile'). getValue () = ''){
Ext. Msg. alert ('xin Xin hint ', 'select the file to be upgrade ');
Return;
}
Ext. MessageBox. show ({
Title: 'Please wait ....',
Msg: 'file in progress ....',
ProgressText :'',
Width: 300,
Progress: true,
Closable: false,
AnimEl: 'loding'
});
Form. getForm (). submit ({
Url: 'upload ',
Method: 'post ',
Success: function (form, action ){
Ext. Msg. alert ('success', 'Congratulations! File success! '+ Action. result. success );
Win_upload.hide ();
},
Failure: function (form, action ){
Ext. Msg. alert ('token failed', "the token is missing in the file. Please try again! ");
}
})
}
}
},{
Text: 'close ',
Handler: function (){
Win_upload.hide ();
}
}],
Closable: false,
Draggable: false,
Resizable: false
});
 
 
Java code:
Obtain and read the stream information before saving the file.
Obtain excel content
 
Package javaservlets. production. uploadexcel;
 
Import java. io. IOException;
Import java. io. InputStream;
Import java. util. List;
 
Import javax. servlet. ServletException;
Import javax. servlet. http. HttpServlet;
Import javax. servlet. http. HttpServletRequest;
Import javax. servlet. http. HttpServletResponse;
 
Import jxl. Cell;
Import jxl. Sheet;
Import jxl. Workbook;
Import jxl. read. biff. BiffException;
 
Import org. apache. commons. fileupload. FileItem;
Import org. apache. commons. fileupload. FileUploadException;
Import org. apache. commons. fileupload. disk. DiskFileItemFactory;
Import org. apache. commons. fileupload. servlet. ServletFileUpload;
Import org. json. JSONException;
Import org. json. JSONObject;
 
Public class Upload extends HttpServlet {
 
Private static final long serialVersionUID = 6777910910008132796l;
 
@ Override
Protected void doGet (HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
Super. doGet (req, resp );
System. out. println ("doGet ");
Resp. sendRedirect ("/upload/index. jsp ");
}

@ Override
Protected void doPost (HttpServletRequest req, HttpServletResponse resp ){

System. out. println ("----------------------------------- upload ---------------------------------------------------");

InputStream is = null;
Workbook workbook = null;

Try {
List <FileItem> items = new ServletFileUpload (new DiskFileItemFactory (). parseRequest (req );
For (FileItem item: items ){
If (item. isFormField ()){
System. out. println (item. getFieldName ());
System. out. println (item. getString ());
} Else {
System. out. println (item. getFieldName ());
Is = item. getInputStream ();
Workbook = Workbook. getWorkbook (is );
}
}

Sheet [] sheetNum = workbook. getSheets ();
System. out. println ("---------------------------------- print sheet data:" + sheetNum. length + "----------------------------");
Sheet sheet = workbook. getSheet (0 );
Cell cell = null;
 
Int columnCount = sheet. getColumns ();
Int rowCount = sheet. getRows ();
For (int I = 0; I <rowCount; I ++ ){
For (int j = 0; j <columnCount; j ++ ){
Cell = sheet. getCell (j, I );
System. out. print (cell. getContents ());
}
System. out. println ("\ n ");
}
Resp. setContentType ("text/html ");
JSONObject jObject = new JSONObject ();
Try {
JObject. put ("success", "true ");
} Catch (JSONException e ){
E. printStackTrace ();
Try {
JObject. put ("success", "false ");
} Catch (JSONException e1 ){
E1.printStackTrace ();
}
}
Resp. getWriter (). print (jObject. toString ());
// Resp. sendRedirect ("/upload/index. jsp ");
Workbook. close ();
} Catch (FileUploadException e ){
E. printStackTrace ();
} Catch (BiffException e ){
E. printStackTrace ();
} Catch (IOException e ){
E. printStackTrace ();
}

}
}