DBFReader解析DBF文件发生内部异常，求指教

public static void main(String[] args) {        String msg = "";        FilenameFilter filter = new FilenameFilter() {             public boolean accept(File dir, String name) {                 //Pattern p = Pattern.compile("^L\\d+\\.dbf$",                 Pattern p = Pattern.compile("L090203.dbf",                 Pattern.CASE_INSENSITIVE);                 Matcher m = p.matcher(name);                 return m.matches();             }          };          String yaSuoPath = "D:\\workspace\\linc\\WebContent\\upload\\2012718\\";            File dir = new File(yaSuoPath);            String[] tables = dir.list(filter);            for (String table : tables) {                try {                    DBFReader dBFReader = new DBFReader(new FileInputStream(new File(yaSuoPath+table)));                    dBFReader.setCharactersetName("GBK");                    Object[] fieldValues = null;                    int count = dBFReader.getRecordCount();                    while((fieldValues=dBFReader.nextRecord())!= null&&!(count--<=0)){                        for(int i=0;i<fieldValues.length;i++){                            Object value = fieldValues[i];                            if(value==null){                                System.out.println("空");                            }else{                                System.out.println(fieldValues[i].toString());                            }                        }                    }                } catch (Exception e) {                    msg = "导入发生错误。";                    e.printStackTrace();                }             }    }