Comments on: Processing Microsoft Project File in Java using MPXJ

By: Nicolas

Nicolas — Thu, 08 Jul 2010 13:40:54 +0000

Does anybody have an example code for updating an mpp file using task.set ?
I update the task successfully, I can read it using task,get and the update is correct, however when I open the mpp file the updates are not there.
Am I missing something such as commit or close?
Thanks
Nicolas

By: Daniel

Daniel — Wed, 14 Jan 2009 13:14:41 +0000

Ashish,
after I’ve been working with this api a couple days, I found that in fact the properties of the “father task” doesn’t get updated, i’ve to update them manually using for example father.setDuration(), father.setWork() , father.setStart() or father.setFinish(). It would be very good that the father task get his properties updated after a call to remove() or add() method. It seems that the api gives a few classes in net.sf.mpxj.listener package that able to trigger actions when change are performed in some task, resource or project file. Maybe the solution goes in that direction.
Regards.

By: ashish

ashish — Fri, 09 Jan 2009 16:41:22 +0000

Thanks! I don’t have the answer right now, but working on my next post on Task class details. So will take care of your comment. Will try to post it in 2-3 days

By: Daniel

Daniel — Fri, 09 Jan 2009 14:08:49 +0000

ashish,
very good post.
I’am starting using this api and I’ve a question about if the Task classes are live or not. By live I mean that if you remove a subtask from a task, the “father task” gets all his information like cost and duration updated “on line”. Is that what’s happend?, Or you have to update “manually” suchs information about the “father task”?
Regards.

By: Purathani

Purathani — Mon, 10 Nov 2008 06:02:02 +0000

I’ve tried before with the other version of poi jar file. This poi-3.0.2-FINAL-20080204.jar version is okey to parse the file now.
Thanks alot for your help, Basu.

Regards,
Purathani.

By: Basu

Basu — Fri, 07 Nov 2008 11:31:18 +0000

Please download mpxj-2.1.0 after which u need to use the following import statements
import net.sf.mpxj.ProjectFile;
import net.sf.mpxj.Task;
import net.sf.mpxj.mpp.*;

I think u are getting the following import statement
import com.tapsterrock.mpp.*;
import com.tapsterrock.mpx.*;
which are not correct as i was also getting the same error before but bu using the first import statement as specified above solved the issue.

Please see that once again
I hope u will get through tht easily

Also add all the jar files given in tht mpxj-2.1.0.zip file present in the lib directory along with the mpxj.jar and
poi-3.0.2-FINAL-20080204.jar

Regards
Basu

By: Basu

Basu — Fri, 07 Nov 2008 11:27:04 +0000

Please download mpxj-2.1.0 after which u need to use the following import statements
import net.sf.mpxj.ProjectFile;
import net.sf.mpxj.Task;
import net.sf.mpxj.mpp.*;

Please see that once again
I hope u will get through tht easily

Regards
Basu

By: Purathani

Purathani — Fri, 07 Nov 2008 06:14:40 +0000

Hai,
Thanks for your help..
But i’m still getting this exception error.

Exception in thread “main” java.lang.NoSuchMethodError: org.apache.poi.poifs.filesystem.POIFSFileSystem.getRoot()Lorg/apache/poi/poifs/filesystem/DirectoryEntry;
at net.sf.mpxj.mpp.MPPReader.read(MPPReader.java:61)
at net.sf.mpxj.reader.AbstractProjectReader.read(AbstractProjectReader.java:69)
at Mppparser.MppParser.main(MppParser.java:55)

I’m trying to solve this.
If you have any idea, please help me

Purathani.

By: Basu

Basu — Thu, 06 Nov 2008 12:15:35 +0000

This is the code to access the mpp file

File file = new File(“D:\\MMPT_Project\\Project1.mpp”);
MPPReader mppRead = new MPPReader();
System.out.println(“mpp reader : “+ mppRead.toString());
ProjectFile pf = mppRead.read(file);
/*
The above statement can also be write as
ProjectFile pf = mppRead.read(“path of the mpp file”);
*/
System.out.println(“proj file : “+ pf.getMppFileType());

List lstTask = pf.getAllTasks();

System.out.println(“tasks count:: “+ lstTask.size());
for(int i=1;i System.out.println(“tasks one:: “+ lstTask.get(i).getName() + ” —- “+ lstTask.get(i).getUniqueID() +” —– “+lstTask.get(i).getStart() + ” —– “+ lstTask.get(i).getID());
System.out.println(“tasks second :: “+ lstTask.get(i).getText2() + ” —- “+ lstTask.get(i).getFinish() +” —- “+lstTask.get(i).getPercentageComplete());
}

Hope this will solve the problem
set the classpath of mpxj.jar(2.0) and poi-3.0.2-FINAL-20080204.jar
which comes with the mpxj folder when downloaded.

don’t forget the classpath setting

Basu

By: Purathani

Purathani — Thu, 06 Nov 2008 09:07:53 +0000

Ok.. Thanks..
I’ll try and will see them.

Purathani