java 调用tesseract-ocr识别图片

/**
 *  ━━━━━━神兽出没━━━━━━ 
 *　　　┏┓　　　┏┓ 
 *　　┏┛┻━━━┛┻┓ 
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 *　    ┃　┳┛　┗┳    ┃ 
 *　　┃　　　　　　　┃ 
 *　　┃　　　┻　　　┃ 
 *　　┃　　　　　　　┃ 
 *　　┗━┓　　　┏━┛Code is far away from bug with the animal protecting 
 *　　　　┃　　　┃    神兽保佑,代码无bug 
 *　　　　┃　　　┃ 
 *　　　　┃　　　┗━━━┓ 
 *　　　　┃　　　　　　　┣┓ 
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 *　　　　　┃┫┫　┃┫┫ 
 *　　　　　┗┻┛　┗┻┛ 
 * 
 * ━━━━━━感觉萌萌哒━━━━━━ 
 */
package gt.controller.ocr2;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;

/**
 * 类名称:Test.java
 * 类描述:
 * 作    者:why
 * 时    间:2017年3月17日
 */
public class Test {
 public static synchronized String recognizeText(File imageFile, String imageFormat) throws Exception {
    String tessPath="D:\\ocr\\Tesseract-OCR";
       File outputFile = new File(imageFile.getParentFile(), "output");
       StringBuffer strB = new StringBuffer();
      String[] cm=new String[]{tessPath+"/tesseract",imageFile.getAbsolutePath(),outputFile.getAbsolutePath(),"-l","normal"};
      System.out.println("执行的命令是    ");
      for(String str:cm){
      System.out.print(str+" ");
      }
       Process pb = Runtime.getRuntime().exec(cm);
       int w = pb.waitFor();
       if (w == 0) {
           BufferedReader in = new BufferedReader(new InputStreamReader(new FileInputStream(outputFile
                  .getAbsolutePath()
                  + ".txt"), "UTF-8"));
           System.out.println("正在读取"+outputFile
                  .getAbsolutePath()
                  + ".txt 文件");
           String str;
           while ((str = in.readLine()) != null) {
              strB.append(str);
           }
           System.out.println("读取完成 结果是 "+strB.toString());
           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 recognize the image or its selected region.";
              break;
           case 31:
              msg = "Unsupported image format.";
              break;
           default:
              msg = "Errors occurred.";
           }
//           tempImage.delete();
           throw new RuntimeException(msg);
       }
//       new File(outputFile.getAbsolutePath() + ".txt").delete();
       return strB.toString();
    }
    public static void main(String[] args) {
    try {
System.out.println(recognizeText(new File("D://ocrpic//1.png"), "png"));
} catch (Exception e) {
e.printStackTrace();
}
}

}