Java调用C#

Java调用C#

下载: http://www.codeproject.com/KB/cross-platform/javacsharp/javacsharp_src.zip, 解压到javacsharp_src;

 

打开vs.net 2003, 新建visual c++项目: win32 项目; 在下一个窗口点"应用程序设置", 选中"DLL", "空项目";

设置工程属性: 常规 > "使用托管扩展";

 

copy javacsharp_src\CPPHelloWorld\HelloWorld下的HelloWorld.cpp, Java和MCPP目录到工程;

copy javacsharp_src\CSHelloWorld\HelloWorld的CSharpHelloWorld.cs到工程;

 

在工程目录运行:

csc /debug /t:module CSharpHelloWorld.cs

生成CSharpHelloWorld.netmodule和CSharpHelloWorld.pdb

 

在vs.net中, 加入HelloWorld.cpp到工程"源文件", 生成工程;

copy debug目录下生成的HelloWorld.dll到javacsharp_src\demo;

copy 工程目录下生成的CSharpHelloWorld.netmodule到javacsharp_src\demo;

到javacsharp_src\demo目录运行:

java -jar HelloWorld.jar
输出:

Hello World, from C#!

 

References:

C# method calls within Java Program - http://www.codeproject.com/KB/cross-platform/javacsharp.aspx http://www.dilan.se/development/dotnet.asp

Experience in integrating Java with C# and .NET - http://ww.cs.uvic.ca/~nigelh/Publications/ccpe03.pdf

c:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\csc.exe

"Difference between Netmodule and Assembly file"

程序菜单: "Visual Studio .NET 2003 命令提示"

set PATH=%PATH%;c:\WINDOWS\Microsoft.NET\Framework\v3.5

 

后记: 使用jna直接访问dll

 

HelloWorld.h:
extern "C" __declspec(dllexport) void displayHelloWorld() {

 // Instantiate the MC++ class.
 HelloWorldC* t = new HelloWorldC();

 // The actual call is made. 
 t->callCSharpHelloWorld();
}

 

HelloWorld.java:

import com.sun.jna.Library;
import com.sun.jna.Native;
import com.sun.jna.Platform;

public class HelloWorld {

 public interface MyLibrary extends Library {
  MyLibrary INSTANCE = (MyLibrary) Native.loadLibrary("HelloWorld",
    MyLibrary.class);

  void displayHelloWorld();
 }

 public static void main(String[] args) {
  System.setProperty("jna.library.path", "G:\\javacsharp_src\\demo");
  MyLibrary.INSTANCE.displayHelloWorld();
 }

}