让Jacob从当前路径读取dll文件及相关打包方法

独立观察员2013.08.12

Jacob  LibraryLoader.class修改版代码

功能：让jacob可在当前路径下的dll文件夹内读取相关依赖的dll文件，免去复制到系统文件夹的麻烦。

Bug：好像就不会从系统路径读取了，难道catch内代码不执行？期待高手解答。

package com.jacob.com;

import java.util.Enumeration;

import java.util.HashSet;

import java.util.Locale;

import java.util.MissingResourceException;

import java.util.ResourceBundle;

import java.util.Set;

public final class LibraryLoader

{

publicstatic final String JACOB_DLL_PATH = "jacob.dll.path";

publicstatic final String JACOB_DLL_NAME = "jacob.dll.name";

publicstatic final String JACOB_DLL_NAME_X86 = "jacob.dll.name.x86";

publicstatic final String JACOB_DLL_NAME_X64 = "jacob.dll.name.x64";

publicstatic final String DLL_NAME_MODIFIER_32_BIT = "x86";

publicstatic final String DLL_NAME_MODIFIER_64_BIT = "x64";

publicstatic void loadJacobLibrary()

{

ResourceBundleresources = null;

Setkeys = new HashSet();

try{

resources=ResourceBundle.getBundle(LibraryLoader.class.getName(), Locale.getDefault(),LibraryLoader.class.getClassLoader());

Enumerationi = resources.getKeys();

while(i.hasMoreElements()) {

Stringkey = (String)i.nextElement();

keys.add(key);

}

}

catch(MissingResourceException e)

{

}

try {

Stringpath, name, dir;

path= System.getProperty("user.dir") + "\\dll\\";   //先获取当前目录下的dll文件夹路径——dlgcy；

name= getPreferredDLLName();

dir= path + name + ".dll";  //加后缀适应load()方法；

JacobObject.debug("Loadinglibrary " + dir + " using System.loadLibrary ");

System.load(dir);  //使用load()可载入任意绝对路径下的库文件；

System.out.println("载入dll文件成功！");

}catch (Exception e) { //原方法；

Stringpath = System.getProperty("jacob.dll.path");

if ((path == null) && (resources !=null) && (keys.contains("jacob.dll.path"))) {

path =(String)resources.getObject("jacob.dll.path");

}

if (path != null) {

JacobObject.debug("Loading library" + path + " using System.loadLibrary ");

System.loadLibrary(path);

}

else {

String name = null;

if(System.getProperty("jacob.dll.name") != null)

name =System.getProperty("jacob.dll.name");

else if((System.getProperty("jacob.dll.name.x86") != null) &&(shouldLoad32Bit()))

{

name = System.getProperty("jacob.dll.name.x86");

} else if((System.getProperty("jacob.dll.name.x64") != null) &&(!shouldLoad32Bit()))

{

name =System.getProperty("jacob.dll.name.x64");

} else if ((resources != null) &&(keys.contains("jacob.dll.name")))

name =resources.getString("jacob.dll.name");

else if ((resources != null) &&(keys.contains("jacob.dll.name.x86")) && (shouldLoad32Bit()))

{

name =resources.getString("jacob.dll.name.x86");

} else if ((resources != null) &&(keys.contains("jacob.dll.name.x64")) &&(!shouldLoad32Bit()))

{

name =resources.getString("jacob.dll.name.x64");

}

else{

name = getPreferredDLLName();

}

JacobObject.debug("Loading library" + name + " using System.loadLibrary ");

System.loadLibrary(name);

}

e.printStackTrace();

}

}

publicstatic String getPreferredDLLName()

{

if(shouldLoad32Bit()) {

return"jacob-" + JacobReleaseInfo.getBuildVersion() + "-" +"x86";

}

return"jacob-" + JacobReleaseInfo.getBuildVersion() + "-" +"x64";

}

protectedstatic boolean shouldLoad32Bit()

{

Stringbits = System.getProperty("sun.arch.data.model", "?");

if(bits.equals("32"))

returntrue;

if(bits.equals("64")) {

returnfalse;

}

Stringarch = System.getProperty("java.vm.name", "?");

if(arch.toLowerCase().indexOf("64-bit") >= 0) {

returnfalse;

}

returntrue;

}

}

使用j2ewiz打包

首先在Eclipse中这样导出：

出现的是一个jar文件和一个库文件夹：

然后打开j2ewiz：

然后选择“浏览JAR…”或者你用好压将Jar文件提前解压那么这时就可以选择“选择目录…”:

接下来都是相应的选择；

这里还可以隐藏class，就是当你生成exe文件后，你用好压打开也看不见你的class：

(慎重选择隐藏功能，否则可能读取不到某些路径的文件)

最后就可生成exe文件：图标可自己设定。

接着将exe文件、依赖库文件夹、以及其它资源文件打包压缩：