tess4j项目无法加载tessdll.dll

[别拿土豆当地瓜]

最近研究图像识别，去网上下载了tess4j的最新源码，并在此基础上写自己的demo，结果发现不能加载tessdll。我试过将dll放在项目之外的某个绝对路径，这样也加载不了，放在项目classpath下也不行。请问哪位大神能帮帮我？
加载dll的代码如下：
public static final String LIB_NAME = "tessdll";
/**
* An instance of the class library.
*/
public static TessDllAPI INSTANCE = (TessDllAPI) Native.loadLibrary(LIB_NAME, TessDllAPI.class);


运行程序报错如下：

Exception in thread "main" java.lang.UnsatisfiedLinkError: Unable to load library 'tessdll': ???????¨
at com.sun.jna.NativeLibrary.loadLibrary(NativeLibrary.java:163)
at com.sun.jna.NativeLibrary.getInstance(NativeLibrary.java:236)
at com.sun.jna.Library$Handler.<init>(Library.java:140)
at com.sun.jna.Native.loadLibrary(Native.java:379)
at com.sun.jna.Native.loadLibrary(Native.java:364)
at net.sourceforge.tess4j.TessDllAPI.<clinit>(TessDllAPI.java:34)
at net.sourceforge.tess4j.Tesseract.doOCR(Tesseract.java:158)
at net.sourceforge.tess4j.Tesseract.doOCR(Tesseract.java:135)
at net.sourceforge.tess4j.Tesseract.doOCR(Tesseract.java:88)
at net.sourceforge.tess4j.Tesseract.doOCR(Tesseract.java:75)
at net.sourceforge.test.ocrTest.main(ocrTest.java:15)

[别拿土豆当地瓜]

顶起来