java 用 jawin 调用 dll

问题描述

我要用java 调用jawin 读取 dll 来实现读取硬盘编号目的以下是原代码package com.ywda.util;import org.jawin.COMException;import org.jawin.FuncPtr;import org.jawin.ReturnFlags;public class nativeDll {public static void main(String[] args) throws Exception {int result1,result2;FuncPtr test1 = null;FuncPtr test2 = null;try {test1 = new FuncPtr("demo.dll", "test1");test2 = new FuncPtr("demo.dll", "test2");result1 = test1.invoke_I(5, 6, ReturnFlags.CHECK_NONE);result2 = test2.invoke_I(5, 6, ReturnFlags.CHECK_NONE);System.out.println("5 plus 6 is " + result1);System.out.println("5 multiply 6 is " + result2);} catch (COMException e) {e.printStackTrace();} finally {if (test1 != null) {try {test1.close();} catch (COMException e) {e.printStackTrace();}}if (test2 != null) {try {test2.close();} catch (COMException e) {e.printStackTrace();}}}}}这段代码是我从网上找的，不好使，我也不知道该怎么改，还有救市dll 文件到底要放在什么地方，有没有人知道怎么写。这是错误代码org.jawin.COMException: 8007007e: ???????¨at org.jawin.Bootstrap.loadLibrary(Native Method)at org.jawin.FuncPtr.<init>(FuncPtr.java:79)at com.ywda.util.nativeDll.main(nativeDll.java:18)

解决方案

dll代码可以放到自己指定的目录下。你再去读哪个目录。你先去看看jni的再做就会了。