1. 测试代码

public class TesseractExample {
 public static void main(String[] args) throws Exception {
    //1.本地
    //File imageFile = new File("C:\\wangl\\eurotext.tif");
	//InputStream is = new FileInputStream(imageFile);; 
	//2.url http
    //InputStream is = downLoadFromUrl("http://s1.sinaimg.cn/mw690/003bsgbmgy6R6ekxkl2e0"); 
	//3.url https
	InputStream is = downLoadFromUrl("https://login.10333.com/dotoyo//captchacode");
	    
	BufferedImage bi = ImageIO.read(is);
    ITesseract instance = new Tesseract();  // JNA Interface Mapping

        //设置datapath
    instance.setDatapath("C:\\wangl\\soft\\tess4j\\tessdata");  

        //设置语言包

        instance.setLanguage("eng+chi_sim");
    try {
        String result = instance.doOCR(bi);
        System.out.println(result);
    } catch (TesseractException e) {
        System.err.println(e.getMessage());
    }
    if(is != null){
       is.close();
    }
 }
 
 public static InputStream downLoadFromUrl(String urlStr) throws Exception{

             //指定证书文件
	System.setProperty("javax.net.ssl.trustStore","C:\\wangl\\soft\\Java\\jdk1.7.0_79\\jre\\lib\\security\\jssecacerts");
        URL url = new URL(urlStr);  
        HttpURLConnection conn = (HttpURLConnection)url.openConnection();  
        //信任所有的https证书
        trustAllHttpsCertificates();
        HttpsURLConnection.setDefaultHostnameVerifier(hv);
        //设置超时间为3秒
        conn.setConnectTimeout(3*1000);
        //防止屏蔽程序抓取而返回403错误
        conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");
        //得到输入流
        InputStream inputStream = conn.getInputStream();  
        return inputStream;
}
 
public static HostnameVerifier hv = new HostnameVerifier() {
        public boolean verify(String urlHostName, SSLSession session) {
            System.out.println("Warning: URL Host: " + urlHostName + " vs. "
                               + session.getPeerHost());
            return true;
        }
};
	
private static void trustAllHttpsCertificates() throws Exception {
	javax.net.ssl.TrustManager[] trustAllCerts = new javax.net.ssl.TrustManager[1];
	javax.net.ssl.TrustManager tm = new miTM();
	trustAllCerts[0] = tm;
	javax.net.ssl.SSLContext sc = javax.net.ssl.SSLContext
			.getInstance("SSL");
	sc.init(null, trustAllCerts, null);
	javax.net.ssl.HttpsURLConnection.setDefaultSSLSocketFactory(sc
			.getSocketFactory());
}


static class miTM implements javax.net.ssl.TrustManager,
		javax.net.ssl.X509TrustManager {
	public java.security.cert.X509Certificate[] getAcceptedIssuers() {
		return null;
	}


	public boolean isServerTrusted(
			java.security.cert.X509Certificate[] certs) {
		return true;
	}


	public boolean isClientTrusted(
			java.security.cert.X509Certificate[] certs) {
		return true;
	}


	public void checkServerTrusted(
			java.security.cert.X509Certificate[] certs, String authType)
			throws java.security.cert.CertificateException {
		return;
	}


	public void checkClientTrusted(
			java.security.cert.X509Certificate[] certs, String authType)
			throws java.security.cert.CertificateException {
		return;
	}
}

}

2. 设置datapath,设置语言包中英文

3. 注意如果https证书不被信任,那么需要导出证书(填写host port 路径,运行InstallCert

导出证书)

public class InstallCert {


public static void main(String[] args) throws Exception {

//		

//		int port;

//		char[] passphrase;

//		if ((args.length == 1) || (args.length == 2)) {

//			String[] c = args[0].split(":");

//			host = c[0];

//			port = (c.length == 1) ? 443 : Integer.parseInt(c[1]);

//			String p = (args.length == 1) ? "changeit" : args[1];

//			passphrase = p.toCharArray();

//		} else {

//			System.out

//					.println("Usage: java InstallCert [:port] [passphrase]");

//			return;

//		}
	String host = "14.17.69.168";
	int port = 443;
	String p =  "changeit" ;
	char[] passphrase = p.toCharArray();
	


	File file = new File("jssecacerts");
	if (file.isFile() == false) {
		char SEP = File.separatorChar;
		File dir = new File(System.getProperty("java.home") + SEP + "lib"
				+ SEP + "security");
		file = new File(dir, "jssecacerts");
		if (file.isFile() == false) {
			file = new File(dir, "cacerts");
		}
	}
	System.out.println("Loading KeyStore " + file + "...");
	InputStream in = new FileInputStream(file);
	KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
	ks.load(in, passphrase);
	in.close();


	SSLContext context = SSLContext.getInstance("TLS");
	TrustManagerFactory tmf = TrustManagerFactory
			.getInstance(TrustManagerFactory.getDefaultAlgorithm());
	tmf.init(ks);
	X509TrustManager defaultTrustManager = (X509TrustManager) tmf
			.getTrustManagers()[0];
	SavingTrustManager tm = new SavingTrustManager(defaultTrustManager);
	context.init(null, new TrustManager[] { tm }, null);
	SSLSocketFactory factory = context.getSocketFactory();


	System.out
			.println("Opening connection to " + host + ":" + port + "...");
	SSLSocket socket = (SSLSocket) factory.createSocket(host, port);
	socket.setSoTimeout(10000);
	try {
		System.out.println("Starting SSL handshake...");
		socket.startHandshake();
		socket.close();
		System.out.println();
		System.out.println("No errors, certificate is already trusted");
	} catch (SSLException e) {
		System.out.println();
		e.printStackTrace(System.out);
	}


	X509Certificate[] chain = tm.chain;
	if (chain == null) {
		System.out.println("Could not obtain server certificate chain");
		return;
	}

 
	System.out.println();
	System.out.println("Server sent " + chain.length + " certificate(s):");
	System.out.println();
	MessageDigest sha1 = MessageDigest.getInstance("SHA1");
	MessageDigest md5 = MessageDigest.getInstance("MD5");
	for (int i = 0; i < chain.length; i++) {
		X509Certificate cert = chain[i];
		System.out.println(" " + (i + 1) + " Subject "
				+ cert.getSubjectDN());
		System.out.println("   Issuer  " + cert.getIssuerDN());
		sha1.update(cert.getEncoded());
		System.out.println("   sha1    " + toHexString(sha1.digest()));
		md5.update(cert.getEncoded());
		System.out.println("   md5     " + toHexString(md5.digest()));
		System.out.println();
	}


	System.out
			.println("Enter certificate to add to trusted keystore or 'q' to quit: [1]");
	String line = "1";
	int k;
	try {
		k = (line.length() == 0) ? 0 : Integer.parseInt(line) - 1;
	} catch (NumberFormatException e) {
		System.out.println("KeyStore not changed");
		return;
	}


	X509Certificate cert = chain[k];
	String alias = host + "-" + (k + 1);
	ks.setCertificateEntry(alias, cert);


	OutputStream out = new FileOutputStream("c://wangl//https//jssecacerts");
	ks.store(out, passphrase);
	out.close();


	System.out.println();
	System.out.println(cert);
	System.out.println();
	System.out
			.println("Added certificate to keystore 'jssecacerts' using alias '"
					+ alias + "'");
}


private static final char[] HEXDIGITS = "0123456789abcdef".toCharArray();


private static String toHexString(byte[] bytes) {
	StringBuilder sb = new StringBuilder(bytes.length * 3);
	for (int b : bytes) {
		b &= 0xff; 
		sb.append(HEXDIGITS[b >> 4]);
		sb.append(HEXDIGITS[b & 15]);
		sb.append(' ');
	}
	return sb.toString();
}


private static class SavingTrustManager implements X509TrustManager {


	private final X509TrustManager tm;
	private X509Certificate[] chain;


	SavingTrustManager(X509TrustManager tm) {
		this.tm = tm;
	}


	public X509Certificate[] getAcceptedIssuers() {
		throw new UnsupportedOperationException();
	}


	public void checkClientTrusted(X509Certificate[] chain, String authType)
			throws CertificateException {
		throw new UnsupportedOperationException();
	}


	public void checkServerTrusted(X509Certificate[] chain, String authType)
			throws CertificateException {
		this.chain = chain;
		tm.checkServerTrusted(chain, authType);
	}
}



}

4.https需要在代码1中指定证书文件.

5.图片信息为: 汉字验证码–demo分享

最终结果显示: 汉字验证码汴demo分享

OK,识别率还可以,但存在提升的空间!

6.如果追求高识别率,可以考虑付费的国外泰比和国内的汉王.