所需資源下載連接(資源免費,重在分享)html
Tesseract:http://download.csdn.net/detail/chenyangqi/9190667java
jai_imageio-1.1-alpha,swingx-1.0:http://download.csdn.net/detail/chenyangqi/9190683ios
HttpWatch Professional:http://download.csdn.net/detail/chenyangqi/9208339app
項目簡介:eclipse
咱們學校使用的是校園銳捷客戶端上網,本人因長時間不用密碼,早已忘記密碼,只記得是六位純數字,又不想去服務中心換密碼,就想用Http模擬一下銳捷網頁版實現登錄,遍歷一下000000-999999的密碼。也順便學習一下。廢話不說了,直接進入主題,登錄頁面以下中規中矩,用戶名密碼驗證碼:學習
要實現模擬登錄難點有兩個,一個是Http請求中Cookie的管理,一個是驗證碼識別,改篇文章講解如何識別驗證碼,至於模擬登錄請看本人後期的博文(博文鏈接:http://www.cnblogs.com/chenyangqi/p/4906376.html)ui
1:下載安裝Tesseractspa
本人已提供下載連接(文章開頭處提供下載連接),下載好安裝便可,壓縮包內還提供了漢語語言包的,Tesseract是一款支持漢語識別的OCR,這也是我選擇他的緣由,至於安裝和驗證安裝是否成功,可自行百度,我就不廢話了。.net
我安裝的位置爲:D:\Program Files (x86)\Tesseract-OCR,該目錄下的結構以下(其中tessdata就是存放語言包的位置)code
二:驗證碼獲取
下載HttpWatch(文章開頭處提供下載連接),安裝,並在IE中使用,對登錄頁面進行抓包,找到驗證碼的URL,以下圖(HttpWatch安裝使用方法,自行百度);
得到URL後鍵驗證碼圖片下載到本地。好比:D://verifycode.jpg
下載圖片到本地代碼以下:
private static void getImage(String name_get, String password_get) { GetMethod get = new GetMethod( "你的驗證碼URL"); try { client.executeMethod(get); File storeFile = new File("D:/verifycode.jpg"); //保存在本地的路徑 FileOutputStream output = new FileOutputStream(storeFile); InputStream is = get.getResponseBodyAsStream(); FileOutputStream fos = new FileOutputStream(storeFile); byte[] b = new byte[1024]; while ((is.read(b)) != -1) { fos.write(b); } is.close(); fos.close(); } catch (IOException e) { e.printStackTrace(); } }
三:Java實現驗證碼識別
代碼以下,eclipse新建一個java項目,引入jai_imageio-1.1-alpha.jar,swingx-1.0.jar這兩個包(文章開頭處提供下載連接),導入到項目中。OK,準備寫代碼吧,共兩個類ORC.class ImageIOhelper.class(只需修改一下你安裝Tesseract的路徑,可直接引入你的項目使用)。
OCR.class代碼以下:recognizeText(File imageFile, String imageFormat)方法的參數,就是上一步下載的驗證碼圖片在本地的位置。D://verifycode.jpg
package com.cyq.request; import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.InputStreamReader; import java.util.ArrayList; import java.util.List; import org.jdesktop.swingx.util.OS; public class OCR { private final String LANG_OPTION = "-l"; // 英文字母小寫l,並不是數字1 private final String EOL = System.getProperty("line.separator"); private String tessPath = "D://Program Files (x86)//Tesseract-OCR";//Tesseract安裝路徑 public String recognizeText(File imageFile, String imageFormat) throws Exception { File tempImage = ImageIOHelper.createImage(imageFile, imageFormat); File outputFile = new File(imageFile.getParentFile(), "output"); StringBuffer strB = new StringBuffer(); List<String> cmd = new ArrayList<String>(); if (OS.isWindowsXP()) { cmd.add(tessPath + "//tesseract"); } else if (OS.isLinux()) { cmd.add("tesseract"); } else { cmd.add(tessPath + "//tesseract"); } cmd.add(""); cmd.add(outputFile.getName()); ProcessBuilder pb = new ProcessBuilder(); pb.directory(imageFile.getParentFile()); cmd.set(1, tempImage.getName()); pb.command(cmd); pb.redirectErrorStream(true); Process process = pb.start(); int w = process.waitFor(); // 刪除臨時正在工做文件 tempImage.delete(); if (w == 0) { BufferedReader in = new BufferedReader(new InputStreamReader( new FileInputStream(outputFile.getAbsolutePath() + ".txt"), "UTF-8")); String str; while ((str = in.readLine()) != null) { strB.append(str).append(EOL); } in.close(); } else { String msg; switch (w) { case 1: msg = "Errors accessing files.There may be spaces in your image's filename."; break; case 29: msg = "Cannot recongnize the image or its selected region."; break; case 31: msg = "Unsupported image format."; break; default: msg = "Errors occurred."; } tempImage.delete(); } new File(outputFile.getAbsolutePath() + ".txt").delete(); return strB.toString(); } }
ImageIOhelper.class代碼以下:
package com.cyq.request; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import java.util.Iterator; import java.util.Locale; import javax.imageio.IIOImage; import javax.imageio.ImageIO; import javax.imageio.ImageReader; import javax.imageio.ImageWriteParam; import javax.imageio.ImageWriter; import javax.imageio.metadata.IIOMetadata; import javax.imageio.stream.ImageInputStream; import javax.imageio.stream.ImageOutputStream; import com.sun.media.imageio.plugins.tiff.TIFFImageWriteParam; public class ImageIOHelper { /** * 圖片文件轉換爲tif格式 * * @param imageFile * 文件路徑 * @param imageFormat * 文件擴展名 * @return */ public static File createImage(File imageFile, String imageFormat) { File tempFile = null; try { Iterator<ImageReader> readers = ImageIO .getImageReadersByFormatName(imageFormat); ImageReader reader = readers.next(); ImageInputStream iis = ImageIO.createImageInputStream(imageFile); reader.setInput(iis); IIOMetadata streamMetadata = reader.getStreamMetadata(); TIFFImageWriteParam tiffWriteParam = new TIFFImageWriteParam( Locale.CHINESE); tiffWriteParam.setCompressionMode(ImageWriteParam.MODE_DISABLED); Iterator<ImageWriter> writers = ImageIO .getImageWritersByFormatName("tiff"); ImageWriter writer = writers.next(); BufferedImage bi = reader.read(0); IIOImage image = new IIOImage(bi, null, reader.getImageMetadata(0)); tempFile = tempImageFile(imageFile); ImageOutputStream ios = ImageIO.createImageOutputStream(tempFile); writer.setOutput(ios); writer.write(streamMetadata, image, tiffWriteParam); ios.close(); writer.dispose(); reader.dispose(); } catch (IOException e) { e.printStackTrace(); } return tempFile; } private static File tempImageFile(File imageFile) { String path = imageFile.getPath(); StringBuffer strB = new StringBuffer(path); strB.insert(path.lastIndexOf('.'), 0); return new File(strB.toString().replaceFirst("(?<=//.)(//w+)$", "tif")); } }
Main方法中調用就OK了:
private static String getCode() { String valCode = null; String path = "d://verifycode.jpg"; try { valCode = new OCR().recognizeText(new File(path), "jpg");
System.out.println("驗證碼爲:"+valCode) } catch (IOException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } return valCode; }
好啦,驗證碼識別over,至於整個Http登錄的請看我後一篇博文(http://www.cnblogs.com/chenyangqi/p/4906376.html)。
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