Java OCR tess4j 图片识别技术（三）

article/2025/6/26 4:51:34

先贴代码段

tess4j整个的代码调用到时是蛮简单的。

1.先去官网下载：http://tess4j.sourceforge.net/

我的是Tess4J-3.4.0版，目录如下:
这里写图片描述

2.新建项目，将lib,tessdata,src复制到新建的项目中

3.将lib下的jar包加到build path 中

项目目录如下：
这里写图片描述

接下来就可以写一写测试了：

import java.io.File;import net.sourceforge.tess4j.ITesseract;
import net.sourceforge.tess4j.Tesseract;
import net.sourceforge.tess4j.TesseractException;public class Tess4j {public static void main(String[] args) {//图片所在文件夹testTess4j("E:\\TestCode");}public static void testTess4j(String filePath){File root = new File(filePath);  ITesseract instance = new Tesseract();  try {  File[] files = root.listFiles();  for (File file : files) {  String result = instance.doOCR(file);  String fileName = file.toString().substring(file.toString().lastIndexOf("\\")+1);  System.out.println("图片名：" + file.toString() +" 识别结果："+result);  }  } catch (TesseractException e) {  System.err.println(e.getMessage());  }  }
}

4.这时候可以运行了，但是会报错，如下：

Exception in thread "main" java.lang.UnsatisfiedLinkError: Unable to load library 'libtesseract304': Native library (win32-x86-64/libtesseract304.dll) not found in resource path ([file:/G:/Eclipse/Demo/bin/, file:/G:/Eclipse/Demo/lib/commons-beanutils-1.9.2.jar, file:/G:/Eclipse/Demo/lib/commons-io-2.4.jar, file:/G:/Eclipse/Demo/lib/commons-logging-1.2.jar, file:/G:/Eclipse/Demo/lib/ghost4j-1.0.1.jar, file:/G:/Eclipse/Demo/lib/hamcrest-core-1.3.jar, file:/G:/Eclipse/Demo/lib/itext-2.1.7.jar, file:/G:/Eclipse/Demo/lib/jai-imageio-core-1.3.1.jar, file:/G:/Eclipse/Demo/lib/jna-4.2.2.jar, file:/G:/Eclipse/Demo/lib/jul-to-slf4j-1.7.19.jar, file:/G:/Eclipse/Demo/lib/junit-4.12.jar, file:/G:/Eclipse/Demo/lib/lept4j-1.1.2.jar, file:/G:/Eclipse/Demo/lib/log4j-1.2.17.jar, file:/G:/Eclipse/Demo/lib/logback-classic-1.1.6.jar, file:/G:/Eclipse/Demo/lib/logback-core-1.1.6.jar, file:/G:/Eclipse/Demo/lib/rococoa-core-0.5.jar, file:/G:/Eclipse/Demo/lib/slf4j-api-1.7.19.jar, file:/G:/Eclipse/Demo/lib/xmlgraphics-commons-1.5.jar])