How to call c++ function from Java servlet

[sandyprc78]

I want to add jni code into my servlet,i have used JNI in my desktop application but now i want to add in my java web project.
let me tell you a condition.i have logic code on c++ and i want to add that code with my java web project.so please help me out

[krieg]

You should be able to do it just like you did in normal JRE. You could also try compiling the C++ to a DLL and using JNA which requires a little less work than JNI.

You could also just port the C++ code to Java which might actually be faster if the C++ code is more simple than complex.

[raj.mscking]

Hi!

in Java the JNA is the best solution for using the native code..,

[jalpesh_007]

If you want to call C++ from Java, you'll need to use JNI - Java Native Interface.

Be warned that you lose some of the benefits of the garbage collector, since it can't deal with your C++ objects, and your code won't be portable anymore.

A Java Servlet container is definitely not the most appropriate vehicle to execute C++ code in. You could try to use JNI to make a servlet run the C++ code, but it seems to me that there are much easier and reliable ways, like good old CGI's. Tomcat can do CGI, as explained here, with some limitations and restrictions.

[raj.mscking]

Try to use JNI/JNA ..,