package com.jeecg.excelout; import java.io.File; import java.io.FileInputStream; import java.io.OutputStream; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import javax.servlet.http.HttpServletResponse; import org.apache.poi.hssf.usermodel.HSSFCell; import org.apache.poi.hssf.usermodel.HSSFCellStyle; import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.hssf.util.HSSFColor; import org.apache.poi.hssf.util.Region; import org.apache.poi.poifs.filesystem.POIFSFileSystem; /** * 报表导出工具类 * * @author xuebls 本工具是根据POI对Excel2003进行报表导出 本工具类可根据模板进行Excel的导出 * 并且可根据提供的模板Sheet页进行复制 从而实现多个Sheet页的需求 * 使用本工具类时,如果需求是每个Sheet页中的数据都不一致,但是表格样式和模板都一样 * 那么只需要在实际情况中根据 sql 来查询要添加的数据源 (只需更改数据源即可) */ public class ExcelUtil { /** * 根据模板导出报表，可导出多个Sheet页 * * @param 导出的Excel文件名 * @param 模板路径 (全路径) * @param 数据源 * @param 返回请求 * @param 生成的Sheet页的名称集合 * @param 数据源中Map集合的key值 (key值对应的value值顺序要列名顺序一致) * @param 开始 循环写入数据 的行数(从第几行开始写入数据) */ public static void ExcelByModel(String ExcelName, String ModelURl, List<Map<String, String>> dataSource, HttpServletResponse response, String[] sheetNames, String[] keyNames, int rowNum) throws Exception { // 设置导出Excel报表的导出形式 response.setContentType("application/vnd.ms-excel"); // 设置导出Excel报表的响应文件名 String fileName = new String(ExcelName.getBytes("utf-8"), "ISO-8859-1"); response.setHeader("Content-disposition", "attachment;filename=" + fileName + ".xls"); // 创建一个输出流 OutputStream fileOut = response.getOutputStream(); // 读取模板文件路径 File file = new File(ModelURl); FileInputStream fins = new FileInputStream(file); POIFSFileSystem fs = new POIFSFileSystem(fins); // 读取Excel模板 HSSFWorkbook wb = new HSSFWorkbook(fs); // 设置边框样式 HSSFCellStyle style = wb.createCellStyle(); style.setBorderBottom(HSSFCellStyle.BORDER_THIN); style.setBorderLeft(HSSFCellStyle.BORDER_THIN); style.setBorderRight(HSSFCellStyle.BORDER_THIN); style.setBorderTop(HSSFCellStyle.BORDER_THIN); // 设置边框样式的颜色 style.setBottomBorderColor(HSSFColor.BLACK.index); style.setLeftBorderColor(HSSFColor.BLACK.index); style.setRightBorderColor(HSSFColor.BLACK.index); style.setTopBorderColor(HSSFColor.BLACK.index); // 模板页 HSSFSheet sheetModel = null; // 新建的Sheet页 HSSFSheet newSheet = null; // 创建行 HSSFRow row = null; // 创建列 HSSFCell cell = null; // 循环建立Sheet页 for (int i = 0; i < sheetNames.length; i++) { // 读取模板中模板Sheet页中的内容 sheetModel = wb.getSheetAt(0); // 设置新建Sheet的页名 newSheet = wb.createSheet(sheetNames[i]); // 将模板中的内容复制到新建的Sheet页中 copySheet(wb, sheetModel, newSheet, sheetModel.getFirstRowNum(), sheetModel.getLastRowNum()); //获取到新建Sheet页中的第一行为其中的列赋值 row=newSheet.getRow(0); row.getCell(1).setCellValue("这是为表代码赋的值"); //注意 合并的单元格也要按照合并前的格数来算 row.getCell(6).setCellValue("这是为外部代码赋的值"); //获取模板中的第二列，并赋值 row=newSheet.getRow(1); row.getCell(1).setCellValue("表名称赋值"); //注意 合并的单元格也要按照合并前的格数来算 row.getCell(6).setCellValue("这是为是否系统表赋的值"); // 遍历数据源 开始写入数据(因为Excel中是从0开始,所以减一) int num = rowNum - 1; for (Map<String, String> item : dataSource) { // 循环遍历,新建行 row = newSheet.createRow((short) num); //判断有多少列数据 for (int j = 0; j < keyNames.length; j++) { // 设置每列的数据 设置每列的样式 设置每列的值 cell = row.createCell(j); cell.setCellStyle(style); cell.setCellValue(item.get(keyNames[j])); } num++; } // break 加break可以测试只添加一个Sheet页的情况 } // 写入流 wb.write(fileOut); // 关闭流 fileOut.close(); } /** * * @param Excel工作簿对象 * @param 模板Sheet页 * @param 新建Sheet页 * @param 模板页的第一行 * @param 模板页的最后一行 */ private static void copySheet(HSSFWorkbook wb, HSSFSheet fromsheet, HSSFSheet newSheet, int firstrow, int lasttrow) { // 复制一个单元格样式到新建单元格 if ((firstrow == -1) || (lasttrow == -1) || lasttrow < firstrow) { return; } // 复制合并的单元格 Region region = null; for (int i = 0; i < fromsheet.getNumMergedRegions(); i++) { region = fromsheet.getMergedRegionAt(i); if ((region.getRowFrom() >= firstrow) && (region.getRowTo() <= lasttrow)) { newSheet.addMergedRegion(region); } } HSSFRow fromRow = null; HSSFRow newRow = null; HSSFCell newCell = null; HSSFCell fromCell = null; // 设置列宽 for (int i = firstrow; i < lasttrow; i++) { fromRow = fromsheet.getRow(i); if (fromRow != null) { for (int j = fromRow.getLastCellNum(); j >= fromRow.getFirstCellNum(); j--) { int colnum = fromsheet.getColumnWidth((short) j); if (colnum > 100) { newSheet.setColumnWidth((short) j, (short) colnum); } if (colnum == 0) { newSheet.setColumnHidden((short) j, true); } else { newSheet.setColumnHidden((short) j, false); } } break; } } // 复制行并填充数据 for (int i = 0; i < lasttrow; i++) { fromRow = fromsheet.getRow(i); if (fromRow == null) { continue; } newRow = newSheet.createRow(i - firstrow); newRow.setHeight(fromRow.getHeight()); for (int j = fromRow.getFirstCellNum(); j < fromRow.getPhysicalNumberOfCells(); j++) { fromCell = fromRow.getCell((short) j); if (fromCell == null) { continue; } newCell = newRow.createCell((short) j); newCell.setCellStyle(fromCell.getCellStyle()); int cType = fromCell.getCellType(); newCell.setCellType(cType); switch (cType) { case HSSFCell.CELL_TYPE_STRING: newCell.setCellValue(fromCell.getRichStringCellValue()); break; case HSSFCell.CELL_TYPE_NUMERIC: newCell.setCellValue(fromCell.getNumericCellValue()); break; case HSSFCell.CELL_TYPE_FORMULA: newCell.setCellValue(fromCell.getCellFormula()); break; case HSSFCell.CELL_TYPE_BOOLEAN: newCell.setCellValue(fromCell.getBooleanCellValue()); break; case HSSFCell.CELL_TYPE_ERROR: newCell.setCellValue(fromCell.getErrorCellValue()); break; default: newCell.setCellValue(fromCell.getRichStringCellValue()); break; } } } } /** * 测试多Sheet页导出数据表格方法 */ public static void ExcelTest(HttpServletResponse response){ //构建数据源 List<Map<String, String>> dataSourceList=new ArrayList<Map<String,String>>(){ { add(new HashMap<String, String>(){{ put("字段编号", "1"); put("字段代码", "BUSINESS_ID"); put("字段含义", "业务id"); put("数据类型", "VARCHAR"); put("长度", "64"); put("主键", "是"); put("主码", ""); }}); add(new HashMap<String, String>(){{ put("字段编号", "2"); put("字段代码", "PROC_INST_ID"); put("字段含义", "流程实例编号"); put("数据类型", "VARCHAR"); put("长度", "64"); put("主键", ""); put("主码", " "); }}); add(new HashMap<String, String>(){{ put("字段编号", "3"); put("字段代码", "PROC_STATE"); put("字段含义", "流程状态"); put("数据类型", "VARCHAR"); put("长度", "64"); put("主键", " "); put("主码", " "); }}); add(new HashMap<String, String>(){{ put("字段编号", "4"); put("字段代码", "APPLICANT"); put("字段含义", "申请人"); put("数据类型", "VARCHAR"); put("长度", "64"); put("主键", " "); put("主码", " "); }}); add(new HashMap<String, String>(){{ put("字段编号", "5"); put("字段代码", "LEAVE_TYPE"); put("字段含义", "请假类型"); put("数据类型", "VARCHAR"); put("长度", "64"); put("主键", " "); put("主码", " "); }}); add(new HashMap<String, String>(){{ put("字段编号", "6"); put("字段代码", "REASON"); put("字段含义", "请假事因"); put("数据类型", "VARCHAR"); put("长度", "64"); put("主键", " "); put("主码", " "); }}); add(new HashMap<String, String>(){{ put("字段编号", "7"); put("字段代码", "BEGIN_TIME"); put("字段含义", "起始时间"); put("数据类型", "TIMESTAMP"); put("长度", ""); put("主键", " "); put("主码", " "); }}); add(new HashMap<String, String>(){{ put("字段编号", "8"); put("字段代码", "END_TIME"); put("字段含义", "结束时间"); put("数据类型", "TIMESTAMP"); put("长度", ""); put("主键", " "); put("主码", " "); }}); add(new HashMap<String, String>(){{ put("字段编号", "9"); put("字段代码", "INSERT_PERSON"); put("字段含义", "登记人"); put("数据类型", "VARCHAR"); put("长度", "64"); put("主键", " "); put("主码", " "); }}); add(new HashMap<String, String>(){{ put("字段编号", "10"); put("字段代码", "APPROVEDBY"); put("字段含义", "批准人"); put("数据类型", "VARCHAR"); put("长度", "64"); put("主键", " "); put("主码", " "); }}); } }; //构建数据源中的key值 String[] keysStrings={"字段编号","字段代码","字段含义","数据类型","长度","主键","主码"}; //每页的名称 String [] sheetNameStrings={"Sheet1","Sheet2","Sheet3","Sheet4","Sheet5","Sheet6"}; String modelURLString="D:\model\model.xls"; try { ExcelUtil.ExcelByModel("测试模板导出", modelURLString, dataSourceList, response, sheetNameStrings, keysStrings, 6); } catch (Exception e) { e.printStackTrace(); } } }