使用AutoStatisticUser时出问题
我在写一个关于在java服务器下，操作数据库将ResultSet结果集中的数据导入到Excel表中程序。完全借用了别人的代码，我是在database.java中创建了此函数代码如下public static boolean DB2Excel(ResultSet rs, String fileName) { 
            boolean flag = false; 
            WritableWorkbook workBook = null; 
            WritableSheet sheet = null; 
            Label label = null; 
 
            try { 
                // 创建Excel表 
                String path = AutoStatisticUser.class.getResource("").getPath() 
                        + fileName; 
                workBook = Workbook.createWorkbook(new File(path)); 
                // 创建Excel表中的sheet 
                sheet = workBook.createSheet("First Sheet", 0); 
                // 向Excel中添加数据 
                ResultSetMetaData rsmd = rs.getMetaData(); 
                int columnCount = rsmd.getColumnCount(); 
                String columnName = null; 
                int row = 0; 
                // 添加标题 
                for (int i = 0; i < columnCount; i++) { 
                    columnName = rsmd.getColumnName(i + 1); 
                    label = new Label(i, row, columnName); 
                    System.out.println("标题：" + i + "---" + row + "---" 
                            + columnName); 
                    sheet.addCell(label); 
                } 
                row++; 
                System.out.println("写入标题成功"); 
                while (rs.next()) { 
                    for (int i = 0; i < columnCount; i++) { 
                        label = new Label(i, row, rs.getString(i + 1)); 
                        System.out.println("标题：" + i + "---" + row + "---" 
                                + rs.getString(i + 1)); 
                        sheet.addCell(label); 
                    } 
                    row++; 
                } 
                System.out.println("写入内容成功"); 
                // 关闭文件 
                workBook.write();