使用Java在GWT中上传和读取Excel文件

Question

I am using GWT with java. in my application i should upload excel file and should read the content of excel file and store data in entity. I have multiple columns in my excel sheet and i need to map them with my fields in the entity. please suggest me how to achieve this. for example : I have customer Names in excel sheet i need to save them in database/entity on click of button any help.

Answer 1

For uploading a file you need a multipart upload form.GWT supports this with the FormPanel and the FileUpload widget.

If the server implementation is done in Java, you need an Servlet that handles the upload. Apache Commons Fileupload will help you handling the request. As mentioned above Apache POI can help parsing the Excel document.

Answer 2

You can upload excel file as any file. The detailed gwt example you can find here

http://www.celinio.net/techblog/?p=1207

To read from excel you have to use Apache POI APIs for microsoft docs. https://poi.apache.org/

You can use the following example to make yourself familiar with the excel api's

How to read and write excel file in java