关于smartupload的编译问题

mySmartUpload.upload(); 
String fn=mySmartUpload.getFiles().getFile(0).getFileName();
调用文件名时中文乱码,看了网上的解决方案找到SmartUpload.class修改upload()的内容如下:
String  value  =  new  String(m_binArray,  m_startData,  (m_endData  -  m_startData)  +  1,"UTF-8");
我现在反编译修改好后,在NetBeans IDE 3.5.1编译,却报了一大堆错!也许对高手这个问题很简单,我实在不是很明白!
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symbol  : class Files 
location: class com.jspsmart.upload.SmartUpload
    private Files m_files;
            ^
classes/com/jspsmart/upload/SmartUpload.java [43:1] cannot resolve symbol
symbol  : class Request 
location: class com.jspsmart.upload.SmartUpload
    private Request m_formRequest;
            ^
classes/com/jspsmart/upload/SmartUpload.java [101:1] cannot resolve symbol
symbol  : class SmartUploadException 
location: class com.jspsmart.upload.SmartUpload
        throws SmartUploadException, IOException, ServletException
               ^
classes/com/jspsmart/upload/SmartUpload.java [201:1] cannot resolve symbol
symbol  : class SmartUploadException 
location: class com.jspsmart.upload.SmartUpload
        throws SmartUploadException, IOException, ServletException
               ^
classes/com/jspsmart/upload/SmartUpload.java [207:1] cannot resolve symbol
symbol  : class SmartUploadException 
location: class com.jspsmart.upload.SmartUpload
        throws SmartUploadException, IOException, ServletException
               ^
classes/com/jspsmart/upload/SmartUpload.java [248:1] cannot resolve symbol
symbol  : class Files 
location: class com.jspsmart.upload.SmartUpload
    public Files getFiles()
           ^
classes/com/jspsmart/upload/SmartUpload.java [253:1] cannot resolve symbol
symbol  : class Request 
location: class com.jspsmart.upload.SmartUpload
    public Request getRequest()
           ^
classes/com/jspsmart/upload/SmartUpload.java [259:1] cannot resolve symbol
symbol  : class SmartUploadException 
location: class com.jspsmart.upload.SmartUpload
        throws SmartUploadException, IOException, ServletException
               ^
classes/com/jspsmart/upload/SmartUpload.java [265:1] cannot resolve symbol
symbol  : class SmartUploadException 
location: class com.jspsmart.upload.SmartUpload
        throws SmartUploadException, IOException, ServletException
               ^
classes/com/jspsmart/upload/SmartUpload.java [271:1] cannot resolve symbol
symbol  : class SmartUploadException 
location: class com.jspsmart.upload.SmartUpload
        throws SmartUploadException, IOException, ServletException
               ^
classes/com/jspsmart/upload/SmartUpload.java [277:1] cannot resolve symbol
symbol  : class SmartUploadException 
location: class com.jspsmart.upload.SmartUpload
        throws SmartUploadException, IOException, ServletException
               ^
classes/com/jspsmart/upload/SmartUpload.java [347:1] cannot resolve symbol
symbol  : class SmartUploadException 
location: class com.jspsmart.upload.SmartUpload
        throws SQLException, SmartUploadException, IOException, ServletException
                             ^
classes/com/jspsmart/upload/SmartUpload.java [685:1] cannot resolve symbol
symbol  : class SmartUploadException 
location: class com.jspsmart.upload.SmartUpload
        throws SmartUploadException, IOException
               ^
classes/com/jspsmart/upload/SmartUpload.java [59:1] cannot resolve symbol
symbol  : class Files 
location: class com.jspsmart.upload.SmartUpload
        m_files = new Files();
                      ^
classes/com/jspsmart/upload/SmartUpload.java [60:1] cannot resolve symbol
symbol  : class Request 
location: class com.jspsmart.upload.SmartUpload
        m_formRequest = new Request();
                            ^
classes/com/jspsmart/upload/SmartUpload.java [127:1] cannot resolve symbol
symbol  : class SmartUploadException 
location: class com.jspsmart.upload.SmartUpload
                throw new SmartUploadException("Unable to upload.");
                          ^
classes/com/jspsmart/upload/SmartUpload.java [172:1] cannot resolve symbol
symbol  : class File 
location: package upload
                com.jspsmart.upload.File newFile = new com.jspsmart.upload.File();
                                   ^
classes/com/jspsmart/upload/SmartUpload.java [172:1] cannot resolve symbol
symbol  : class File 
location: package upload
                com.jspsmart.upload.File newFile = new com.jspsmart.upload.File();
                                                                          ^
classes/com/jspsmart/upload/SmartUpload.java [362:1] cannot resolve symbol
symbol  : class SmartUploadException 
location: class com.jspsmart.upload.SmartUpload
            throw new SmartUploadException("Unable to save file from the DataBase (1020).");
                      ^
classes/com/jspsmart/upload/SmartUpload.java [705:1] cannot resolve symbol
symbol  : class SmartUploadException 
location: class com.jspsmart.upload.SmartUpload
                throw new SmartUploadException("Unable to upload.");
                          ^
classes/com/jspsmart/upload/SmartUpload.java [719:1] cannot resolve symbol
symbol  : class SmartUploadException 
location: class com.jspsmart.upload.SmartUpload
            throw new SmartUploadException("The Form cannot be saved in the specified file (1030).");
                      ^
21 errors
编译  SmartUpload. 时出错