[英]Using Java to access a third party DLL
I am trying to write a Java program for scientific research equipment that uses National Instruments drivers (DLL) that are written in C. I know nothing about these DLLs at the moment. 我正在尝试编写一个用于科研设备的Java程序,该程序使用以C语言编写的National Instruments驱动程序(DLL)。目前我对这些DLL一无所知。 I can contact NI through my client to get details if required. 如果需要,我可以通过客户与NI联系以获取详细信息。
My C/C++ skills are ancient so would prefer avoiding anything that requires writing C/C++ code. 我的C / C ++技能很古老,因此希望避免使用任何需要编写C / C ++代码的东西。
Looking for advice that includes pointing me to tutorials. 寻找建议,包括向我推荐教程。 My Java skills are excellent and current it is just my C/C++ that is like a decade old. 我的Java技能非常出色,目前只有十年的C / C ++。
The simplest option in your case would likely be JNA . 在您的情况下,最简单的选择可能是JNA 。
Here is a simple Hello World example to show you what is involved in mapping the C library's printf
function: 这是一个简单的Hello World示例 ,向您展示映射C库的printf
函数涉及的内容:
package com.sun.jna.examples;
import com.sun.jna.Library;
import com.sun.jna.Native;
import com.sun.jna.Platform;
/** Simple example of JNA interface mapping and usage. */
public class HelloWorld {
// This is the simplest way of mapping, which supports extensive
// customization and mapping of Java to native types.
public interface CLibrary extends Library {
CLibrary INSTANCE = (CLibrary)
Native.loadLibrary((Platform.isWindows() ? "msvcrt" : "c"),
CLibrary.class);
void printf(String format, Object... args);
}
// And this is how you use it
public static void main(String[] args) {
CLibrary.INSTANCE.printf("Hello, World\n");
for (int i=0;i < args.length;i++) {
CLibrary.INSTANCE.printf("Argument %d: %s\n", i, args[i]);
}
}
}
JNA's JavaDoc and github project include examples and tutorials for a wide range of use cases. JNA的JavaDoc和github项目包括适用于各种用例的示例和教程。
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