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@ -43,7 +43,7 @@ public class ExcelKit {
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* @author LiangXianYou
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* @date 2015-6-16 下午5:56:56
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*/
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//map:data,sheetName,hds,hdNames,xlsName;
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//map:data,sheetName,hds,hdNames,
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public static <T> Workbook exportExcels(List<Map<String, Object>> list) throws Exception {
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Workbook wb = new XSSFWorkbook(); //创建工作薄
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@ -64,12 +64,7 @@ public class ExcelKit {
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@SuppressWarnings("unchecked")
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List<T> data = (List<T>) map.get("data");
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String[] hds = (String[]) map.get("hds");
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for (int j = 0; j < data.size(); j++) {
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for (int k = 0; k < hds.length; k++) {
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Object o = getFieldValue(data.get(j), hds[k]); //得到列的值
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data2Excel(sheet, o, j + 1, k); //将值写入Excel
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}
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}
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dataToSheet(sheet, data, hds, 1);
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}
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return wb;
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@ -100,38 +95,28 @@ public class ExcelKit {
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}
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/**
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* 参数说明：
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* list：list数据集合
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* hdNames：表头需要显示的名称
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* hds：表头对应的对象属性名称，和 hdNames一一对应
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* xlsName：导出Excel的预定义名称
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* request: HttpServletRequest
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* response：HttpServletResponse
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* 通过数据构建Excel
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*
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* 使用数据构建 excel 工作薄对象
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* @param list 数据
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* @param hdNames 表头
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* @param hds 每条记录中数据的属性名
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* @param <T> 数据泛型，支持javaBean 或Map
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* @return
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* @throws Exception
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* @author LiangXianYou
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* @date 2015-3-13 上午11:00:30
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*/
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public static <T> Workbook exportExcel(List<T> list, String[] hdNames, String[] hds) throws Exception {
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Workbook wb = new XSSFWorkbook(); //创建工作薄
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Sheet sheet = wb.createSheet(); //创建工作表
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sheet.autoSizeColumn((short) 0); //自适应宽度
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Workbook wb = new XSSFWorkbook();
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Sheet sheet = wb.createSheet();
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//写入表头---Excel的第一行数据
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Row nRow = sheet.createRow(0); //创建行
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Row nRow = sheet.createRow(0);
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for (int i = 0; i < hdNames.length; i++) {
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Cell nCell = nRow.createCell(i); //创建单元格
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Cell nCell = nRow.createCell(i);
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nCell.setCellValue(hdNames[i]);
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}
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//写入每一行数据---一条记录就是一行数据
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for (int i = 0; i < list.size(); i++) {
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for (int j = 0; j < hds.length; j++) {
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Object o = getFieldValue(list.get(i), hds[j]); //得到列的值
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data2Excel(sheet, o, i + 1, j); //将值写入Excel
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}
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}
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dataToSheet(sheet, list, hds, 1);
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return wb;
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}
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@ -148,11 +133,11 @@ public class ExcelKit {
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if (t == null) {
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v = null;
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} else if (t instanceof Map) {
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v = ((Map) t).get(fieldName); //得到列的值
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v = ((Map) t).get(fieldName);
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} else {
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Field field = t.getClass().getDeclaredField(fieldName);
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field.setAccessible(true); //暴力反射
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v = field.get(t); //得到字段数据的值
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field.setAccessible(true);
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v = field.get(t);
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}
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return v;
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@ -164,24 +149,38 @@ public class ExcelKit {
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* @author LiangXianYou
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* @date 2015-3-13 上午10:37:55
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*/
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private static void data2Excel(Sheet sheet, Object o, Integer r, Integer c) {
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//通过获得sheet中的某一列，有得到，没有创建
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Row nRow = sheet.getRow(r);
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if (nRow == null) {
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nRow = sheet.createRow(r);
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}
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Cell nCell = nRow.createCell(c);
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private static <T> void dataToSheet(Sheet sheet, List<T> list, String[] hds, int skipRow) {
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if (list == null || list.size() == 0) return;
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for (int j = 0; j < list.size(); j++) {
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for (int k = 0; k < hds.length; k++) {
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Row nRow = sheet.getRow(j + skipRow);
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if (nRow == null) {
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nRow = sheet.createRow(j + 1);
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}
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Cell cell = nRow.createCell(k);
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try {
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Object v = getFieldValue(list.get(j), hds[k]); //得到列的值
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dataToCell(cell, v); //将值写入Excel
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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}
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}
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private static void dataToCell(Cell cell, Object v) {
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//根据不同类型进行转化，如有其它类型没有考虑周全的，使用发现的时候添加
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if (o instanceof Integer) nCell.setCellValue((Integer) o);
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else if (o instanceof Double) nCell.setCellValue((Double) o);
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else if (o instanceof Float) nCell.setCellValue((Float) o);
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else if (o instanceof String) nCell.setCellValue((String) o);
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else if (o instanceof Date) nCell.setCellValue(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(o));
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else if (o instanceof Calendar) nCell.setCellValue((Calendar) o);
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else if (o instanceof Boolean) nCell.setCellValue((Boolean) o);
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else if (o == null) nCell.setCellValue("");
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else nCell.setCellValue(o + "");
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if (v instanceof Integer) cell.setCellValue((Integer) v);
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else if (v instanceof Double) cell.setCellValue((Double) v);
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else if (v instanceof Float) cell.setCellValue((Float) v);
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else if (v instanceof String) cell.setCellValue((String) v);
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else if (v instanceof Date) cell.setCellValue(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(v));
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else if (v instanceof Calendar) cell.setCellValue((Calendar) v);
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else if (v instanceof Boolean) cell.setCellValue((Boolean) v);
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else if (v == null) cell.setCellValue("");
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else cell.setCellValue(v + "");
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}
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//======================= 读取excel ===============================
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