Some problems about JCo >.<

[Former Member]

Hi,everyone.

I try to do some exercise about Jco.

But i got trouble on mu first step.

When i call a Client.connection();

I got a error message:

<i>java.lang.NoClassDefFoundError

at com.sap.mw.jco.MiddlewareJRfc$Client.connect (MiddlewareJRfc.java:831)

at com.sap.mw.jco.JCO$Client.connect (JCO.java:3006)

at JCoTest.main(JCoTest.java:24)

Exception in thread "main"</i>

Follows is my codes:

mConnection=JCO.createClient("107","NW01","6czrbe5s","EN","http://140.115.77.xx","00");

mConnection.connect();

System.out.println(mConnection.getAttributes());

mConnection.disconnect();

Anyone can solve my problem? Thx a lot~~~

[kishorg · Accepted solution]

Hi Louis,

Is this a console application or one in NWDS?.

have u set class path for sapjco.jar?.

just check u have set classpath.

Regards

Kishor Gopinathan

[Former Member · Accepted solution]

Hi Kishor,

It is in NWDS.

I had already set Class Path & Path.

And copied two .dll files to ../system32 .

But it still doesn`t work .

Should i do anything to NWDS?

[former_member184385 · Accepted solution]

Hi Louis,

in NWDS, as it is customized Eclipse 2.11 IDE, the usual procedures apply, how to reference jars in your project.

Either you copy the jars inside your project's dir structure and do a "local jar" reference or you leave the jars, where you installed them and do a "external jar" reference. What did you do?

Regards

Gregor

[kishorg · Accepted solution]

Hi Louis,

i had faced the same problem.

but , could realise that ,

associated with the sapjco.jar, these two dlls (librfc32.dll ,sapjcorfc.dll) will be there, and that combination will work if and only if the entire things(sapjco.jar,and the dlls ) are associated with the same package.(i mean in that zip where jar files and dlls )..

just take the back up of the sapjco.jar file from the NWDS ,

replace with u got from the package,

then copy the dlls into sys32 folder from the zip..

i think it will work.

i tried in this way and worked...

Regards

Kishor Gopinathan

[Former Member · Accepted solution]

Thx~~ everyone

I had already solved my problem.^^

[former_member187444 · Accepted solution]

How did you have solved?

Please can you explain?

[Former Member · Accepted solution]

Hi Eray,

I were wondering whether you have found a solution for this problem. If yes, would you please share it with me?

Thanks,

Van

[Former Member · Accepted solution]

Hi Louis Huang,

Would you please share with us your solution for this problem? I encountered the same problem right now, and looking for a solution.

Your help is very much appreciated.

Thanks,

Van

[former_member188321]

Right, try setting 'sapjco.jar' into your classpath.

Moreover, please comfirm that you have PDK's required DLLs:

librfc32.dll

sapjcorfc.dll

into your <windows>\system32 folder.

If still facing problem, then mention.

Have a great day!