表格效果圖
思路 ：
1 excel 標題頭 這里的標題寫成了固定
標題的第一列 需要合並的單元格 需要填充
String[] head0 = new String[] { "登錄名", "是否使用", "單位名稱", "機要員", "聯系方式", "管轄區局",
"級別", "作業人員情況", "作業人員情況", "作業人員情況", "作業人員情況", "作業人員情況",
"系統數據總數", "維保電梯（台）","設備數","設備數",
"分配情況（台）","分配情況（台）","單位地址" }; //在excel中的第2行每列的參數
標題的第二列
/* 在excel中的第3行每列（合並列）的參數 這里需要注意的是 從第幾列合並的時候 需要把前面不需要合並行的列 用"" 補上
(下表是從第7列 開始合並的行的 所以前面補了 6個"", 中間 兼職和總數之間 有一列是不需要合並行的 也補了一個"") */
String[] head1 = new String[] { " ", " ", " ", " ", " ", " ","總數", "確定", "庫內", "庫外", "兼職", "","總數", "認保", "認脫","分配", "未分配"};
2 excel 內容 通用方法寫入從后台數據庫查詢到的數據到 excel
后台業務邏輯（控制器 從后台數據庫查詢數據）
@RequestMapping(value = "exportMntOrgData") public void exportMntOrgData(HttpServletRequest request, HttpServletResponse response){ Map<String, Object> map = new HashMap<String, Object>(); Principal principal = UserUtils.getPrincipal(); getManagerOrgId(map); // 判斷當前登錄賬號是否是市局的id 如果是 supOrgId置為空 查詢所有 // 2、導出 String filename = "管理區局("+principal.getOrgname()+") 維保單位列表 .xls"; List<Map<String, Object>> list = (List<Map<String, Object>>) mntOrgListStatisticsService.exportMntOrgList(map); //String path="exportTitle/mntWorker.xml"; String[] head0 = new String[] { "登錄名", "是否使用", "單位名稱", "機要員", "聯系方式", "管轄區局", "級別", "作業人員情況", "作業人員情況", "作業人員情況", "作業人員情況", "作業人員情況", "系統數據", "設備數","設備數","設備數", "分配情況（台）","分配情況（台）","單位地址" };//在excel中的第2行每列的參數 /* 在excel中的第3行每列（合並列）的參數 這里需要注意的是 從第幾列合並的時候 需要把前面不需要合並行的列 用"" 補上 (下表是從第7列 開始合並的行的 所以前面補了 6個"", 中間 兼職和總數之間 有一列是不需要合並行的 也補了一個"") */ String[] head1 = new String[] { " ", " ", " ", " ", " ", " ","總數", "確定", "庫內", "庫外", "兼職", "","總數", "認保", "認脫","分配", "未分配"}; String[] headnum0 = new String[] { "1,2,0,0", "1,2,1,1","1,2,2,2","1,2,3,3", "1,2,4,4","1,2,5,5","1,2,6,6", "1,1,7,11" , "1,2,12,12", "1,1,13,15", "1,1,16,17","1,2,18,18"};//對應excel中的行和列，下表從0開始{"開始行,結束行,開始列,結束列"} String[] headnum1 = new String[] { "2,2,7,7", "2,2,8,8", "2,2,9,9","2,2,10,10","2,2,11,11", "2,2,13,13","2,2,14,14","2,2,15,15", "2,2,16,16","2,2,17,17"}; String[] colName = new String[] { "username","username", "mntOrgName", "name", "mobile", "manageOrgName", "grade" ,"userTotal", "userTotal" , "userTotal1", "userTotal2", "userTotal3", "equTotal" , "equTotal", "mntEquCount", "notMntEquCount", "assignedEquCount" , "norAssignedEquCount", "address"};//需要顯示在excel中的參數對應的值，因為是用map存的，放的都是對應的key try { ExcelUtil.reportMergeXls(request, response, list, filename, head0, headnum0, head1, headnum1, colName);//utils類需要用到的參數 } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } }
從后台查詢 List<Map<String, Object>> 得到2條 的json 格式數據如下：
[ {username=鄧潤軍,username=44022519790424561X,mntOrgName=........},
{username=鄧潤軍,username=44022519790424561X,mntOrgName=........}]
通用的方法寫在 ExcelUtil里面
package com.nskj.utils; import java.io.BufferedReader; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStreamReader; import java.io.OutputStream; import java.text.DecimalFormat; import java.text.SimpleDateFormat; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map; import java.util.Scanner; import java.util.Map.Entry; import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServletRequest; 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.HSSFFont; 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.ss.util.CellRangeAddress; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /*** * excel 導出工具類 * @author Administrator * */ public class ExcelUtil { private static DecimalFormat df = new DecimalFormat("0"); // 默認單元格格式化日期字符串 private static SimpleDateFormat sdf = new SimpleDateFormat( "yyyy-MM-dd HH:mm:ss"); // 格式化數字 private static DecimalFormat nf = new DecimalFormat("0.00"); private final static Logger logger = LoggerFactory.getLogger(ExcelUtil.class); /*** * 讀取本地文件txt 獲取excel標題 * @param path * @return */ public static String getTitle(String path){ FileInputStream fis = null; InputStreamReader isr = null; BufferedReader br = null; //用於包裝InputStreamReader,提高處理性能。因為BufferedReader有緩沖的，而InputStreamReader沒有。 String str = ""; String str1 = ""; try { fis = new FileInputStream(path);// FileInputStream // 從文件系統中的某個文件中獲取字節 isr = new InputStreamReader(fis,"UTF-8");// InputStreamReader 是字節流通向字符流的橋梁, //br = new BufferedReader(new InputStreamReader(new FileInputStream(new File("")), "UTF-8")); br = new BufferedReader(isr);// 從字符輸入流中讀取文件中的內容,封裝了一個new InputStreamReader的對象 while ((str = br.readLine()) != null) { str1 += str + ","; } str1 = str1.substring(0,str1.length()-1); // 當讀取的一行不為空時,把讀到的str的值賦給str1 System.out.println(str1);// 打印出str1 } catch (FileNotFoundException e) { System.out.println("找不到指定文件"); } catch (IOException e) { System.out.println("讀取文件失敗"); } finally { try { br.close(); isr.close(); fis.close(); // 關閉的時候最好按照先后順序關閉最后開的先關閉所以先關s,再關n,最后關m } catch (IOException e) { e.printStackTrace(); } } return str1; //讀取excel表頭 } /*** * 讀取服務器文件txt 獲取excel標題 * @param fileName * @return */ public String getFile(String fileName) { StringBuilder result = new StringBuilder(""); String str1=""; if(fileName.endsWith(".txt")){ ClassLoader classLoader = getClass().getClassLoader(); File file = new File(classLoader.getResource(fileName).getFile()); try (Scanner scanner = new Scanner(file)) { while (scanner.hasNextLine()) { String line = scanner.nextLine(); result.append(line).append(","); } scanner.close(); str1=result.toString(); str1 = str1.substring(0,str1.length()-1); } catch (IOException e) { e.printStackTrace(); } } if(fileName.endsWith(".xml")){ FileInputStream fis = null; InputStreamReader isr = null; BufferedReader br = null; //用於包裝InputStreamReader,提高處理性能。因為BufferedReader有緩沖的，而InputStreamReader沒有。 String str = ""; String str2=""; try{ fis = new FileInputStream(this.getClass().getClassLoader().getResource("/").getPath()+"/"+fileName); isr = new InputStreamReader(fis,"UTF-8");// InputStreamReader 是字節流通向字符流的橋梁, //br = new BufferedReader(new InputStreamReader(new FileInputStream(new File("")), "UTF-8")); br = new BufferedReader(isr);// 從字符輸入流中讀取文件中的內容,封裝了一個new InputStreamReader的對象 while ((str = br.readLine()) != null) { str2 += str + ","; } // str1 = str1.substring(0,str1.length()-1); // str1 =str1.replace("<?xml version=\"1.0\" encoding=\"UTF-8\"?>,", ""); // int str3=str2.indexOf(","); // str1 = str2.substring(str3+1,str2.length() -(str3+1)); str1=str2.substring(str2.indexOf(',')+1).trim(); str1 = str1.substring(0,str1.length()-1); } catch (IOException e) { e.printStackTrace(); } } return str1; } //2. writeIntoExcel() 將datatable 數據寫入excel /*public static void writeExcel(ArrayList<ArrayList<Object>> result,String path){ if(result == null){ return; } HSSFWorkbook wb = new HSSFWorkbook(); HSSFSheet sheet = wb.createSheet("sheet1"); for(int i = 0 ;i < result.size() ; i++){ HSSFRow row = sheet.createRow(i); if(result.get(i) != null){ for(int j = 0; j < result.get(i).size() ; j ++){ HSSFCell cell = row.createCell(j); cell.setCellValue(result.get(i).get(j).toString()); } } } ByteArrayOutputStream os = new ByteArrayOutputStream(); try { wb.write(os); } catch (IOException e){ e.printStackTrace(); } byte[] content = os.toByteArray(); File file = new File(path);//Excel文件生成后存儲的位置。 OutputStream fos = null; try { fos = new FileOutputStream(file); fos.write(content); os.close(); fos.close(); }catch (Exception e){ e.printStackTrace(); } }*/ public static void export(List<Map<String, Object>> list, String filename, HttpServletResponse response, String titles) { try { response.setContentType("application/x-execl"); response.setHeader("Content-Disposition", "attachment;filename=" + new String(filename.getBytes(), "ISO-8859-1")); ServletOutputStream outputStream = response.getOutputStream(); exportExcel(list, filename, outputStream, titles); if (outputStream != null) { outputStream.close(); } } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } /** * 數據導出公用方法 * */ public static void exportExcel(List<Map<String, Object>> list, String filename, ServletOutputStream outputStream,String titles) { try { Map<String, Object> map1 = list.get(0); StringBuilder sb = new StringBuilder(); String[] fields=titles.split(","); /*sb.append(title); String[] fields = sb.toString().split(",");*/ // 1、創建工作簿 HSSFWorkbook workbook = new HSSFWorkbook(); // 1.1、創建合並單元格對象 CellRangeAddress cellRangeAddress = new CellRangeAddress(0, 0, 0, fields.length - 1);// 起始行號，結束行號，起始列號，結束列號 CellRangeAddress cellRangeAddress1 = new CellRangeAddress(1, 1, 0, fields.length - 1);// 起始行號，結束行號，起始列號，結束列號 CellRangeAddress cellRangeAddress2 = new CellRangeAddress(1, 1, 7, 12);// 起始行號，結束行號，起始列號，結束列號 // 1.2、頭標題樣式 HSSFCellStyle style1 = createCellStyle(workbook, (short) 18); // 1.3、列標題樣式 HSSFCellStyle style2 = createCellStyle(workbook, (short) 13); String headRow = filename; // 2、創建工作表 HSSFSheet sheet = workbook.createSheet(headRow); // 2.1、加載合並單元格對象 sheet.addMergedRegion(cellRangeAddress); sheet.addMergedRegion(cellRangeAddress1); sheet.addMergedRegion(cellRangeAddress2); // sheet.addMergedRegion(cellRangeAddress4); // 設置默認列寬 sheet.setDefaultColumnWidth(22); sheet.setDefaultRowHeightInPoints(22); sheet.autoSizeColumn(1, true); // // 3、創建行 // 3.1、創建頭標題行；並且設置頭標題 HSSFRow row1 = sheet.createRow(0); row1.setHeightInPoints(50); HSSFCell cell1 = row1.createCell(0); // 加載單元格樣式 cell1.setCellStyle(style1); cell1.setCellValue(headRow); // 3.1、創建副標題行；並且設置 HSSFRow row2 = sheet.createRow(1); row2.setHeightInPoints(25); HSSFCell cell2 = row2.createCell(0); // 3.2、創建列標題行；並且設置列標題 HSSFRow row3 = sheet.createRow(2); /*String[] titles = new String[fields.length]; for (int i = 0; i < fields.length; i++) { titles[i] = getTitles(type, fields[i]); }*/ for (int i = 0; i < fields.length; i++) { HSSFCell cell5 = row3.createCell(i); // 加載單元格樣式 cell5.setCellStyle(style2); cell5.setCellValue(fields[i]); } // 備注詳情 HSSFRow row36 = sheet.createRow(1); row36.setHeightInPoints(18); HSSFCell cell36 = row36.createCell(0); // 加載單元格樣式 HSSFCellStyle style36 = workbook.createCellStyle(); style36.setAlignment(HSSFCellStyle.ALIGN_LEFT);// 水平居左 style36.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 垂直居中 cell36.setCellStyle(style36); HSSFFont font = workbook.createFont(); font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);// 加粗字體 font.setFontHeightInPoints((short) 16); style36.setFont(font); //cell36.setCellValue(data_batch); // 自適應中文 // 4、操作單元格；寫入excel if (list != null && list.size() > 0) { for (int j = 0; j < list.size(); j++) { Map<String, Object> map = list.get(j); //Object bean = getBean(type, map); HSSFRow row = sheet.createRow(j + 3); int i=0; for(Map.Entry<String,Object > entry:map.entrySet()){ String val=""; if((entry.getValue())!=null && (entry.getValue()) !="null"){ val=getValue( entry.getKey(),entry.getValue().toString()); }else{ val=" "; } //String val=() ? entry.getValue().toString() : "null"; HSSFCell cell = row.createCell(i); i++; cell.setCellValue(val); logger.info("第" + (j+3) + "行,第" + val+ "--賦值成功"); } /*for (int i = 0; i < fields.length; i++) { //String value = CommonUtil.getValue(bean, StringUtils.toCamelCase(fields[i])); //value = getValue(fields[i], value); //cell.setCellValue(value); cell.setCellValue(list.get(j).get(i).toString()); //cell.setCellValue(list.get(j).get(i).toString()); }*/ } } // 5、輸出 workbook.write(outputStream); outputStream.flush(); outputStream.close(); } catch (Exception e) { e.printStackTrace(); } } /** * 創建單元格樣式 * * @param workbook * 工作簿 * @param fontSize * 字體大小 * @return 單元格樣式 */ private static HSSFCellStyle createCellStyle(HSSFWorkbook workbook, short fontSize) { HSSFCellStyle style = workbook.createCellStyle(); style.setAlignment(HSSFCellStyle.ALIGN_CENTER);// 水平居中 style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 垂直居中 // 創建字體 HSSFFont font = workbook.createFont(); font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);// 加粗字體 font.setFontHeightInPoints(fontSize); // 加載字體 style.setFont(font); return style; } public static String getValue(String field, String value) { if (field.equals("credLocation")) { if (value.equals("1")) { value = "庫內人員 "; } if (value.equals("2")) { value = "庫外人員"; } } if (field.equals("chongfu")) { if (value.equals("1")) { value = "否"; }else{ value = "是"; } } if (field.equals("days")) { if (value.contains("-")) { String value1 = "逾期"+value+"天"; value=value1.replace("-", ""); }else{ value = value+"天后保養"; } } if (field.equals("recordStatus")) { if (value.equals("1")) { value = "故障報修"; }else if (value.equals("2")){ value = "已派工"; }else if(value.equals("3")){ value = "已出發"; }else if(value.equals("4")){ value = "到達現場"; }else if(value.equals("5")){ value = "維修完成"; }else if(value.equals("6")){ value = "服務評定"; } } return value; } public static DecimalFormat getDf() { return df; } public static void setDf(DecimalFormat df) { ExcelUtil.df = df; } public static SimpleDateFormat getSdf() { return sdf; } public static void setSdf(SimpleDateFormat sdf) { ExcelUtil.sdf = sdf; } public static DecimalFormat getNf() { return nf; } public static void setNf(DecimalFormat nf) { ExcelUtil.nf = nf; } /** * 多行表頭 * dataList：導出的數據；sheetName：表頭名稱； head0：表頭第一行列名；headnum0：第一行合並單元格的參數 * head1：表頭第二行列名；headnum1：第二行合並單元格的參數；detail：導出的表體字段 * */ public static void reportMergeXls(HttpServletRequest request, HttpServletResponse response, List<Map<String, Object>> dataList, String sheetName, String[] head0, String[] headnum0, String[] head1, String[] headnum1, String[] detail) throws Exception { HSSFWorkbook workbook = new HSSFWorkbook(); // 1、創建標題 String headRow = sheetName; // 1.1、頭標題樣式 HSSFCellStyle headstyle = createCellStyle(workbook, (short) 18); // 1.2、列標題樣式 HSSFCellStyle style1 = createCellStyle(workbook, (short) 13); // 2、創建工作表 HSSFSheet sheet = workbook.createSheet(headRow); // 設置默認列寬 sheet.setDefaultColumnWidth(22); sheet.setDefaultRowHeightInPoints(22); sheet.autoSizeColumn(1, true); // 3、創建行 // 3.1、創建頭標題行；並且設置頭標題 HSSFRow row1 = sheet.createRow(0); row1.setHeightInPoints(50); HSSFCell cell1 = row1.createCell(0); // 加載單元格樣式 cell1.setCellStyle(headstyle); cell1.setCellValue(headRow); // 3.1、創建副標題行；並且設置 HSSFRow row2 = sheet.createRow(1); row2.setHeightInPoints(25); HSSFCell cell2 = row2.createCell(0); // 3.2、創建列標題行；並且設置列標題 HSSFRow row3 = sheet.createRow(2); // 第一行表頭標題 sheet.addMergedRegion(new CellRangeAddress(0, 0, 0, head0.length-1)); HSSFRow row = sheet.createRow(0); row.setHeight((short) 0x349); HSSFCell cell = row.createCell(0); cell.setCellStyle(headstyle); CellUtil.setCellValue(cell, sheetName); // 第二行表頭列名 row = sheet.createRow(1); for (int i = 0; i < head0.length; i++) { cell = row.createCell(i); cell.setCellValue(head0[i]); cell.setCellStyle(style1); } // 1.3、普通單元格樣式（中文）樣式 HSSFCellStyle style2 = workbook.createCellStyle(); //HSSFCellStyle style36 = workbook.createCellStyle(); style2.setAlignment(HSSFCellStyle.ALIGN_LEFT);// 水平居左 style2.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 垂直居中 HSSFFont font = workbook.createFont(); font.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL);// 加粗字體 font.setFontHeightInPoints((short) 10); style2.setFont(font); //動態合並單元格 for (int i = 0; i < headnum0.length; i++) { String[] temp = headnum0[i].split(","); Integer startrow = Integer.parseInt(temp[0]); Integer overrow = Integer.parseInt(temp[1]); Integer startcol = Integer.parseInt(temp[2]); Integer overcol = Integer.parseInt(temp[3]); sheet.addMergedRegion(new CellRangeAddress(startrow, overrow, startcol, overcol)); } //設置合並單元格的參數並初始化帶邊框的表頭（這樣做可以避免因為合並單元格后有的單元格的邊框顯示不出來） row = sheet.createRow(2);//因為下標從0開始，所以這里表示的是excel中的第三行 for (int i = 0; i < head0.length; i++) { cell = row.createCell(i); cell.setCellStyle(style1);//設置excel中第四行的1、2、7、8列的邊框 if(i > 1 ) { for (int j = 0; j < head1.length; j++) { cell = row.createCell(j + 1); cell.setCellValue(head1[j]);//給excel中第三行的3、4、5、6列賦值（"溫度℃", "濕度%", "溫度℃", "濕度%"） cell.setCellStyle(style1);//設置excel中第三行的3、4、5、6列的邊框 } } } //動態合並單元格 for (int i = 0; i < headnum1.length; i++) { String[] temp = headnum1[i].split(","); Integer startrow = Integer.parseInt(temp[0]); Integer overrow = Integer.parseInt(temp[1]); Integer startcol = Integer.parseInt(temp[2]); Integer overcol = Integer.parseInt(temp[3]); sheet.addMergedRegion(new CellRangeAddress(startrow, overrow, startcol, overcol)); } // 設置列值-內容 for (int i = 0; i < dataList.size(); i++) { row = sheet.createRow(i + 3);//標題、時間、表頭字段共占了3行，所以在填充數據的時候要加3，也就是數據要從第4行開始填充 for (int j = 0; j < detail.length; j++) { Map tempmap = (HashMap) dataList.get(i); Object data = tempmap.get(detail[j]); cell = row.createCell(j); cell.setCellStyle(style2); cell.setCellType(HSSFCell.CELL_TYPE_STRING); CellUtil.setCellValue(cell, data); } } String fileName = new String(sheetName.getBytes("gb2312"), "ISO8859-1"); ByteArrayOutputStream baos = new ByteArrayOutputStream(); workbook.write(baos); response.setContentType("application/x-download;charset=utf-8"); response.addHeader("Content-Disposition", "attachment;filename=" + fileName + ".xls"); OutputStream os = response.getOutputStream(); ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray()); byte[] b = new byte[1024]; while ((bais.read(b)) > 0) { os.write(b); } bais.close(); os.flush(); os.close(); } }
公共類 CellUtil
package com.nskj.utils; import java.math.BigDecimal; import java.sql.Date; import java.text.DecimalFormat; import java.text.SimpleDateFormat; import java.util.regex.Pattern; import org.apache.poi.hssf.usermodel.HSSFCell; public class CellUtil { public static String returnCellValue(HSSFCell cell){ String cellvalue = ""; if (null != cell) { switch (cell.getCellType()) { case HSSFCell.CELL_TYPE_NUMERIC: // 數字 return String.valueOf(cell.getNumericCellValue()).trim(); case HSSFCell.CELL_TYPE_STRING: // 字符串 return String.valueOf(cell.getStringCellValue()).trim(); case HSSFCell.CELL_TYPE_BOOLEAN: // Boolean return String.valueOf(cell.getBooleanCellValue()).trim(); case HSSFCell.CELL_TYPE_FORMULA: // 公式 return String.valueOf(cell.getCellFormula()).trim(); case HSSFCell.CELL_TYPE_BLANK: // 空值 return ""; case HSSFCell.CELL_TYPE_ERROR: // 故障 return ""; default: return ""; } } else { } return cellvalue; } //避免cell.setCellValue(checkOrderQmSave.getSellOrderNo())中參數為空就會報錯 public static void setCellValue(HSSFCell cell, Object object){ if(object == null){ cell.setCellValue(""); }else{ if (object instanceof String) { cell.setCellValue(String.valueOf(object)); }else if(object instanceof Long){ Long temp = (Long)object; String cellvalue = new DecimalFormat("#0.00").format(temp.doubleValue()); cell.setCellValue(cellvalue); }else if(object instanceof Double){ Double temp = (Double)object; String cellvalue = new DecimalFormat("#0.00").format(temp.doubleValue()); cell.setCellValue(cellvalue); }else if(object instanceof Float){ Float temp = (Float)object; String cellvalue = new DecimalFormat("#0.00").format(temp.doubleValue()); cell.setCellValue(cellvalue); }else if(object instanceof Integer){ Integer temp = (Integer)object; cell.setCellValue(temp.intValue()); }else if(object instanceof BigDecimal){ BigDecimal temp = (BigDecimal)object; String cellvalue = new DecimalFormat("#").format(temp.doubleValue()); cell.setCellValue(cellvalue); }else{ cell.setCellValue(""); } } } public static void setCellValue(HSSFCell cell, Object object, String model){ if(object == null){ cell.setCellValue(""); }else{ if (object instanceof String) { cell.setCellValue(String.valueOf(object)); }else if(object instanceof Long){ Long temp = (Long)object; String cellvalue = new DecimalFormat("#0.00").format(temp.doubleValue()); cell.setCellValue(cellvalue); }else if(object instanceof Double){ Double temp = (Double)object; String cellvalue = new DecimalFormat("#0.00").format(temp.doubleValue()); cell.setCellValue(cellvalue); }else if(object instanceof Float){ Float temp = (Float)object; String cellvalue = new DecimalFormat("#0.00").format(temp.doubleValue()); cell.setCellValue(cellvalue); }else if(object instanceof Integer){ Integer temp = (Integer)object; cell.setCellValue(temp.intValue()); }else if(object instanceof BigDecimal){ BigDecimal temp = (BigDecimal)object; String cellvalue = new DecimalFormat("#0.00").format(temp.doubleValue()); cell.setCellValue(cellvalue); }else if(object instanceof java.sql.Date){ cell.setCellValue(new SimpleDateFormat(model).format(object)); }else if(object instanceof java.util.Date){ cell.setCellValue(new SimpleDateFormat(model).format(object)); }else{ cell.setCellValue(""); } } } public static void setCellValue(HSSFCell cell, String object){ if(object == null){ cell.setCellValue(""); }else{ cell.setCellValue(object); } } public static void setCellValue(HSSFCell cell, Long object){ if(object == null){ cell.setCellValue(""); }else{ cell.setCellValue(object.doubleValue()); } } public static void setCellValue(HSSFCell cell, Double object){ if(object == null){ cell.setCellValue(""); }else{ cell.setCellValue(object.doubleValue()); } } public static void setCellValue(HSSFCell cell, double object){ cell.setCellValue(object); } public static void setCellValue(HSSFCell cell, Date object, String model){ if(object == null){ cell.setCellValue(""); }else{ cell.setCellValue(new SimpleDateFormat(model).format(object)); } } public static void setCellValue(HSSFCell cell, java.util.Date object, String model){ if(object == null){ cell.setCellValue(""); }else{ cell.setCellValue(new SimpleDateFormat(model).format(object)); } } public static void setCellValue(HSSFCell cell, BigDecimal object){ if(object == null){ cell.setCellValue(""); }else{ cell.setCellValue(object.toString()); } } //判斷EXCEL表格高度用 row.setHeight((short) CellUtil.getExcelCellAutoHeight(TAR_VAL_ALL_STRING, 280, 30)); public static float getExcelCellAutoHeight(String str,float defaultRowHeight, int fontCountInline) { int defaultCount = 0; for (int i = 0; i < str.length(); i++) { int ff = getregex(str.substring(i, i + 1)); defaultCount = defaultCount + ff; } if (defaultCount > fontCountInline){ return ((int) (defaultCount / fontCountInline) + 1) * defaultRowHeight;//計算 } else { return defaultRowHeight; } } public static int getregex(String charStr) { if("".equals(charStr) || charStr == null){ return 1; } // 判斷是否為字母或字符 if (Pattern.compile("^[A-Za-z0-9]+$").matcher(charStr).matches()) { return 1; } // 判斷是否為全角 if (Pattern.compile("[\u4e00-\u9fa5]+$").matcher(charStr).matches()) { return 2; } //全角符號 及中文 if (Pattern.compile("[^x00-xff]").matcher(charStr).matches()) { return 2; } return 1; } }
前台頁面請求：
這個地方在前台請求的時候 千萬不能用ajax ，可以用一個簡單是 a 標簽鏈接到后台的控制器
<a class="aaaa" href="${ctx}/export/exportMntOrgData">導出</a>