So i was wondering if there is a way to save my data into a file ,such as a txt file or excel spreedsheatform? (xml parsing?) Because i want row for date, time ,size etc.
Store your data in CSV format and import the file to Excel whenever you need it in a spreadsheet format.
Related
I have an .xls file which I call it model. Now my probleme is that I want to create over 50 .xls file that have that same format of the model. So properly my question is : how do I create a worksheet (excel file) based on an excel template using java? Is there is any way to do it without copying the style between sheets ??
This example does not use a pre defined template but you can go check out my code and morph it into something worth for you.
https://github.com/ernst223/spread-sheet-exporter
So you can maybe code the style in my class and then use my class for all of your excel files
SpreadSheetExporter spreadSheetExporter = new SpreadSheetExporter(List<Object>, "Filename");
File fileExcel = spreadSheetExporter.getExcel();
as you didn't make any apparent effort before asking i will do the same
excel api
I am trying to read an Excel file using Java.
I did this successfully by using org.apache.poi which is returning all of the data column wise.
But now I want to read the same excel file by column names only which will be given by the user. The twisting part is that I want to accept column names from a property file and only those names, which are in the property file, those column's data should be shown by the program. So any suggestions? How do I do it?
use net.sf.supercsv library for reading EXL file by header/column name
I am trying to read data from a xls which is working fine using
java.io.File f1=new java.io.File("E:/SELENIUM DATA/First_P1/DATA_SHEET.xls");
w = Workbook.getWorkbook(f1);
wworkbook = Workbook.createWorkbook(f1,w);
after some time , if try to open xls , showing file is corrupted. help me.
By looking into your small piece of code it seems you are not following the correct way to read the excel sheet. If you just want to read the excel sheet then there is no need to use createWorkbook(f1,w) or If you want to write something on it then you must be doing something wrong that's why it corrupts your file.
Read/Write Excel sheet
The file should be closed properly once the data read/write from the sheet so that
the mentioned error message will not be prompted.
You can use below commands like
w.write();
w.close();
I am using itextpdf for this. And I got pdf corresponding to the excel file. But the 2nd sheet is formatted using formula. 1000 cells are formatted like this, but only 20 cells have values right now. So when I convert excel file to pdf ,then whole formatted cells are displaying in excel file. How can I avoid these empty cells from pdf?
You could use jexcel to see if the current cell you are accessing has contents present or not..
File xls=new File("url of excel file");
try {
Workbook wb=Workbook.getWorkbook(xls);
for(int shno=0;shno<wb.getNumberOfSheets();shno++)
{ Sheet s=wb.getSheet(shno);
int rows=s.getRows();
for(int i=0;i<rows;i++) {
data=s.getCell(1,i).getContents();
}
Now using data add it to your pdf file...
Hope this helps. :)
First of all thanks for the previous help.
What I want to do is the following.
Is to collect information through a small program that can capture in Java and writes it to a file which I have done.
Then to have this information passed to a preformatted excel spread sheet.
In the spread sheet it reads this data that is written and displays it in different tables and graphs.
Is this possible to automatically code or do I have to write to a csv file, from the csv file manually copy to an excel template?
If anybody has come across a solution to my problem I would appreciate a steer in the right direction
Hey try ths code in servlet or in JSP.
This will convert simple excel sheet on which you can do further operations..
response.setContentType("application/vnd.ms-excel");
PrintWriter out = response.getWriter();
try {
out.println("\tId \tName");
out.println("\t1\tabc");
out.println("\t2\txyz");
out.println("\t3\tpqr");
} finally {
out.close();
}
here ..
response.setContentType("application/vnd.ms-excel");
specify the excel sheet to be generated..
all "\t" separates new cell in the excel sheet.
On your requirement basis you can also change this code with database or any...
It's a duplicate of How to read and write excel file in java
you can use this API: http://poi.apache.org/
Or if you write one text file with tab separation between fields and save with (.XLS) extension, excel should read it. But off course the better solution is to use Apache POI HSSF.