大家好,又见面了,我是你们的朋友全栈君。
Tess4J官方描述:A Java JNA wrapper for Tesseract OCR API.
demo下载
1.先去官网下载:http://tess4j.sourceforge.net/
2.将下载的文件解压后把下面几个文件夹(图片中选中的)复制到新建的项目中
3.将lib下的jar包加到build path 中。注意:lib里面除了jar包还有别的。
4.根据官网的样例在刚建的项目中使用一下:
The following code example shows common usage of the library. Make sure tessdata
folder are in the search path, and the .jar
files are in the classpath.注意在第4步之前确保tessdata
文件夹在项目中,jar包在classpath中。前面的2,3两步已经做了。
[java] view plain copy
- package net.sourceforge.tess4j.example;
- import java.io.File;
- import net.sourceforge.tess4j.*;
- public class TesseractExample {
- public static void main(String[] args) {
- File imageFile = new File(“eurotext.tif”);
- ITesseract instance = new Tesseract(); // JNA Interface Mapping
- // ITesseract instance = new Tesseract1(); // JNA Direct Mapping
- try {
- String result = instance.doOCR(imageFile);
- System.out.println(result);
- } catch (TesseractException e) {
- System.err.println(e.getMessage());
- }
- }
- }
我稍微改了一下,识别指定文件夹下所有验证码
[java] view plain copy
- package blog.csdn.net.dr_guo;
- import java.io.File;
- import net.sourceforge.tess4j.ITesseract;
- import net.sourceforge.tess4j.Tesseract;
- import net.sourceforge.tess4j.TesseractException;
- /**
- * 验证码识别(图片名即为验证码数字)
- * @author drguo
- *
- */
- public class VCR {
- public static void main(String[] args) {
- File root = new File(System.getProperty(“user.dir”) “/imgs”);
- 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:” fileName ” 识别结果:” result);
- }
- } catch (TesseractException e) {
- System.err.println(e.getMessage());
- }
- }
- }
直接运行就行了,但这时可能会报错
[plain] view plain copy
- 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])
注意前面的报错信息,把lib下的win32-x86-64拷到项目中的bin目录下就可以了
准确率还是挺高的。
如果你还觉得麻烦,直接把我的项目下载下来改吧:https://git.oschina.net/drguo/VerificationCodeRecognition.git
注意我的jdk版本是jdk1.8.0_74,如果你的版本低于我的版本可能会报错~
发布者:全栈程序员栈长,转载请注明出处:https://javaforall.cn/132599.html原文链接:https://javaforall.cn