Hi,
In my project I need to access methods from third party C++ DLL using JNI.
For that I will have to write a JNI Wrapper DLL.
I am a java programmer and have no idea about C++ programming and creating DLLs.
Is there any tool available that can generate wrapper DLL for me out of that third party DLL?
Thanks
-Pragati
Usually we have to write a class which do 4 basic steps.
1> Locate the Dll which consist of function.
2> Load the dll into memory,
3> Load the address of the functions into memory and push all the arguments into stack.
4> Transfer the control to these functions.
try this.... Good Luck....
With
http://www.simtel.net/product.php[id]93174[SiteID]simtel.net
http://www.simtel.net/product.php[id]94368[SiteID]simtel.net
I developed a project with 140 Java classes. I also built JNI wrappers for all classes in rt.jar (for testing only). The tool above for MS VS6.0 has option to implement Java interface in JNI code for accepting notifications from Java code in JNI. Both tools can filter methods in Java classes to be wrapped in JNI code.
These tool do not use any JVM for generating JNI wrappers. The generation algorithms are based on C++ code made with ANTLR.
Hi
Please help me out to solve the fo0llowing issue:
I am generating the JNI classes without using the tool.And I am using VC++ for generating the DLL.
After generating the header file using javah command i am trying to create a C file implementing the jni methods((ikmp2lib1.c) ) which in turn calls the C functions in the native C file(ikmp_lib).JNI implemented C file (ikmp2lib1.c) is compiled fine but when I tried to generate the DLL it is giving the following errors.
method names in ikmp2lib1.c are like ikmp2lib_IKMP2Obj_IKMPCambioDeClave
project name is ikmp2lib
Linking...
Creating library Debug/ikmp2lib.lib and object Debug/ikmp2lib.exp
ikmp2Lib1.obj : error LNK2001: unresolved external symbol _IKMP_cambio_de_clave
ikmp2Lib1.obj : error LNK2001: unresolved external symbol _IKMP_common_name
ikmp2Lib1.obj : error LNK2001: unresolved external symbol _IKMP_existe_lector
ikmp2Lib1.obj : error LNK2001: unresolved external symbol _IKMP_inserta_tarjeta
etc.
Hi
I am working on JNI Implementaion.
Please help me out in generating the DLL file using VC++.
I am able to successfully compile the file and able to generate the lib files but it is not generating the DLL file.
Can you please check this once.
Displaying the following message.
--Configuration: ikmp2lib - Win32 Release--
Compiling...
ikmp2Lib1.c
IKMP_lib.c
Linking...
Microsoft (R) Incremental Linker Version 6.00.8168
Copyright (C) Microsoft Corp 1992-1998. All rights reserved.
kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib D:\DecevalJNI\ikmp2lib\Release\ikmp2Lib1.obj D:\DecevalJNI\ikmp2lib\Release\IKMP_lib.obj D:\DecevalJNI\ikmp2
lib\Release\IKMP_callback.obj c:\forte\install\lib\qqsm.lib c:\forte\install\lib\qqfo.lib c:\forte\install\lib\qqdo.lib c:\forte\install\lib\qqcm.lib c:\forte\install\lib\qqkn.lib kmpapi32.lib OLDNAMES.LIB OLDNAMES.LIB KERNEL32.LIB USER32.LIB GDI32.
LIB WINSPOOL.LIB COMDLG32.LIB SHELL32.LIB WSOCK32.LIB NETAPI32.LIB WINMM.LIB ADVAPI32.LIB
Creating library ikmp2Lib1.lib and object ikmp2Lib1.exp
ikmp2lib.dll - 0 error(s), 0 warning(s)
Thanks and Regards
Chatrapathi
