如何通过COM调用Java方法

Question

I have a classic ASP/VBScript application that needs to call methods in a Java class. I discovered two products that apparently can do this: Java2COM and Java COM Bridge . Can you recommend one from experience, or is there yet another mechanism by which we can do this which is better? I'd rather avoid having to write C++ code if possible, although we could certainly create a COM DLL in VB6 that could in turn call low level APIs as necessary.

Answer 1

To do this you basically need to have a COM Server that then uses JNI to create a JVM and make Java calls. It is a bit tricky and examples are scarce, which may make the products you have listed helpful. I can't vouch for either of them.

Alternatively, you may want to consider a web service based approach and get to the Java classes that way, depending on what they are and how you're using them.

Answer 2

Agree with Bert. You could try jpype or jni4net for the jni part.
Making a com server with pywin32 in python is a cake thanks to mark hammond .
Making a com server in csharp example at codeproject .

Answer 3

I've used JACOB in the (distant) past, and it seemed to get the job done. The price is right, but the documentation is somewhat lacking so that's something to consider.