jacob-无法共同创建对象

Question

My environment is Java 7, on Windows 7 - 64 bit. So here's my requirement and procedures I followed

1. I wanted to execute a library called test.dll from Java
2. I first downloaded the latest version of jacob , and put them within a folder, which is included in the Windows environment variable PATH .
3. I registered the test.dll using regsvr32.exe under C:\\Windows\\SysWOW64 (it was successful!)
4. I am running jacob from a webapp, so I made sure that WEB-INF/lib has jacob.jar in it.
5. I also set a java System property - -Djava.library.path=c:/dev/jacob/jacob-1.17-x64.dll (This is where I have kept the jacob-1.17-x64.dll )

still I am facing

com.jacob.com.ComFailException: Can't co-create object
    at com.jacob.com.Dispatch.createInstanceNative(Native Method)
    at com.jacob.com.Dispatch.<init>(Dispatch.java:99)

I have gone through many of the SO posts but none of them have helped me so far

can anyone please guide me to the solution?

Answer 1

通过将jdk从64位更改为32位，解决了我一个类似的问题。

Answer 2

Looking at the source code of Jacob Dispatch, line 99 ( http://jacob-project.cvs.sourceforge.net/viewvc/jacob-project/jacob/src/com/jacob/com/Dispatch.java?revision=1.18&view=markup ), the error is not within Jacob (at least not the Java code). Before digging into the Jacob native code, I would try to create this COM object in another container, say an Excel macro or Windows Scripting Host. I believe you will find the same error, or at least will be able to determine if Jacob is the culprit or not. I suspect not.