twain 스캐너 mmscomputing 상태 3에 있지만 상태 5에 있지 않은 소스

Question

봄 mvc의 웹 응용 프로그램에서 스캐너를 실행할 때이 오류가 나타납니다. 나는 byte 메소드를 사용하여 그것을 byte 배열로 반환했다. 여기 생각

uk.co.mmscomputing.device.twain.TwainIOException: uk.co.mmscomputing.device.twain.TwainScanner.setException: 
    uk.co.mmscomputing.device.twain.TwainSource.checkState: 
    Source not in state 3 but in state 5. 
    at uk.co.mmscomputing.device.twain.TwainScanner.signalException(TwainScanner.java:131) 
    at uk.co.mmscomputing.device.twain.jtwain.signalException(jtwain.java:287) 
    at uk.co.mmscomputing.device.twain.jtwain.cbexecute(jtwain.java:243) 
    at uk.co.mmscomputing.device.twain.jtwain.nstart(Native Method) 
    at uk.co.mmscomputing.device.twain.jtwain.access$200(jtwain.java:12) 
    at uk.co.mmscomputing.device.twain.jtwain$1.run(jtwain.java:338) 
uk.co.mmscomputing.device.twain.TwainIOException: uk.co.mmscomputing.device.twain.TwainSource.checkState: 
    Source not in state 3 but in state 5. 
    at uk.co.mmscomputing.device.twain.TwainSource.checkState(TwainSource.java:48) 
    at uk.co.mmscomputing.device.twain.TwainSourceManager.openSource(TwainSourceManager.java:90) 
    at uk.co.mmscomputing.device.twain.jtwain.cbexecute(jtwain.java:234) 
    at uk.co.mmscomputing.device.twain.jtwain.nstart(Native Method) 
    at uk.co.mmscomputing.device.twain.jtwain.access$200(jtwain.java:12) 
    at uk.co.mmscomputing.device.twain.jtwain$1.run(jtwain.java:338) 

내 코드는 오류입니다 :

@RequestMapping(value = "/scanImage", method = RequestMethod.GET) 
@ResponseBody 
public byte[] scanImage() 
{ 

    ByteArrayOutputStream byteArrayOutputStream = null; 
    Scanner scanner = null; 

    try 
    { 

     SCANIMAGE scanImage = new SCANIMAGE(); 
     scanImage.scanStarter(); 
     byte[] buffer = new byte[4096]; 
     byteArrayOutputStream = new ByteArrayOutputStream(); 
     FileInputStream inputStream = new FileInputStream("D:/IMAGE.jpg"); 
     System.out.println("IMAGE Number : D:/IMAGE.jpg"); 

     int read = 0; 


     while ((read = inputStream.read(buffer)) != -1) 
     { 
      byteArrayOutputStream.write(buffer, 0, read); 

     } 
    } 
    catch (ScannerIOException e) 
    { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 
    catch (FileNotFoundException e) 
    { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 
    catch (IOException e) 
    { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 

    return byteArrayOutputStream.toByteArray(); 
} 

Answer 1

TWAIN 상태 3 - 오픈 소스 관리자를 선택합니다. TWAIN 상태 5 - 소스가 활성화되었습니다.

오류에 따르면, 유효한 TWAIN 소스에 연결하지 않은 것으로 보입니다. TWAIN 스캐너를 사용하여 테스트하려면 Twacker을 사용할 수 있습니다.

TWAIN 상태 전환 here에 대해 자세히 알아볼 수 있습니다.