JAva入力ストリームからデータを取得し、バイト配列の例を返す

 
  
import java.io.ByteArrayOutputStream; 
  
import java.io.InputStream; 
  
//                  
  
public class StreamTool { 
  
    /** 
  
     *          
  
     * @param inputStream 
  
     * @return 
  
     * @throws Exception 
  
     */ 
  
    public static byte[] readInputStream(InputStream inputStream) throws Exception{ 
  
        byte[] buffer = new byte[1024]; 
  
        int len = -1; 
  
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); 
  
        while((len = inputStream.read(buffer)) != -1){ 
  
            outputStream.write(buffer, 0, len); 
  
        } 
  
        outputStream.close(); 
  
        inputStream.close(); 
  
        return outputStream.toByteArray(); 
  
    } 
  
}