Java导出Excel表合并行、合并列

Controller层代码

@RequestMapping(value = "/productExportExcel", method = RequestMethod.GET)public void productExportExcel(HttpServletRequest request,HttpServletResponse response) throws Exception {Record rd = this.getCurrentUser();try {List<Integer> columnWidthList = new ArrayList<Integer>();//列宽 用list比较方便在某处插入新字段和数数columnWidthList.add(20);columnWidthList.add(20);columnWidthList.add(20);columnWidthList.add(20);columnWidthList.add(20);columnWidthList.add(20);columnWidthList.add(15);String[] title = {"一级产品线","详细描述","二级产品线","详细描述","三级产品线","详细描述"};String[] key = {"NAME","DETAIL","Z_NAME","Z_DETAIL","ZZ_NAME","ZZ_DETAIL"};String fileName = "产品线信息表";exportExcel.productExport(request, response, columnWidthList, title, key, fileName);logService.showLog(fileName, "4",rd,request);} catch (Exception e) {// TODO: handle exceptionlogger.error(e.getMessage());String fileName = "产品线信息表";logService.showLog(fileName, "5",rd,request);}}

Service层代码

public void productExport(HttpServletRequest request,HttpServletResponse response,List<Integer> columnWidthList,String[] title,String[] key,String fileName) throws Exception{/** 1.设置样式*/HSSFWorkbook workbook = new HSSFWorkbook(); HSSFFont titleFont = workbook.createFont(); //属性字体HSSFFont valueFont = workbook.createFont(); //值字体HSSFCellStyle titleStyle = workbook.createCellStyle();//属性格式HSSFCellStyle valueStyle = workbook.createCellStyle();//值格式setStyle(titleFont,valueFont,titleStyle,valueStyle);HSSFSheet sheet = workbook.createSheet(fileName);for (int i = 0; i < columnWidthList.size(); i++) {sheet.setColumnWidth(i,(int) ((columnWidthList.get(i)+0.72)*256));}/** 2.处理查询条件,获取导出数据 */List<Object> param = new ArrayList<Object>();StringBuffer from = new StringBuffer(" FROM pro_product a left join pro_product b on a.code=b.PARENT_CODE and b.STATE='1' LEFT JOIN pro_product c on b.CODE=c.PARENT_CODE and c.STATE='1' ");StringBuffer where = new StringBuffer(" where a.PARENT_CODE='' and a.state='1' ");String sql = "SELECT a.CODE,a.NAME,a.DETAIL,a.PARENT_CODE,b.CODE Z_CODE,b.NAME Z_NAME,b.DETAIL Z_DETAIL,b.PARENT_CODE Z_PARNET_CODE,c.CODE ZZ_CODE,c.NAME ZZ_NAME,c.DETAIL ZZ_DETAIL,c.PARENT_CODE ZZ_PARENT_CODE " + from+where.toString()+" ORDER BY a.sort,b.sort,c.sort ASC";//便于打印 List<Map<String, Object>> list = registerService.findSQL(sql, param.toArray());List<List<Integer>> rowList = new ArrayList<List<Integer>>();//合并行String[] rowKeys = {"NAME","DETAIL","Z_NAME","Z_DETAIL","",""};//需要合并列名，与key对应，不需要合并的列对应的数组位置列名为空字符串即可跳过String[] rowValue = {"NAME","DETAIL","Z_NAME","Z_DETAIL","",""};//for (int i = 0; i < rowKeys.length; i++) {rowList.add(new ArrayList<Integer>());}/** 3.填充数据*/if(list.size()>0){//列名HSSFRow rowTitle = sheet.createRow(0);HSSFCell[] cellTitle = new HSSFCell[title.length];for (int i = 0; i < cellTitle.length; i++) {cellTitle[i] = rowTitle.createCell(i);cellTitle[i].setCellStyle(titleStyle);cellTitle[i].setCellValue(new HSSFRichTextString(title[i]));}HSSFRow[] row = new HSSFRow[list.size()];HSSFCell[][] cell = new HSSFCell[title.length][list.size()];Map<Object,String> typeMap = new HashMap<Object, String>();for (int i = 0; i < list.size(); i++) {/*System.out.println((i+1)+"/"+list.size());*///行row[i] = sheet.createRow(i+1);row[i].setHeight((short) ((30+0.72)*20));Map<String, Object> content = list.get(i);//判断合并内容for (int j = 0; j < rowKeys.length; j++) {if(!"".equals(rowKeys[j])){if(null==content.get(rowKeys[j])){rowList.get(j).add(i);rowValue[j] = "";}else if(!rowValue[j].equals(content.get(rowKeys[j]).toString())){rowList.get(j).add(i);rowValue[j] = content.get(rowKeys[j]).toString();}}}//遍历导出数据for (int j = 0; j < title.length; j++) {//列cell[j][i] = row[i].createCell(j);cell[j][i].setCellStyle(valueStyle);/*String contentValue = "";//特殊数据处理cell[j][i].setCellValue(contentValue);*/String contentValue = "";//特殊数据处理if(null!=content.get((key[j]))){if(key[j].equals("DETAIL")||key[j].equals("Z_DETAIL")||key[j].equals("ZZ_DETAIL")){contentValue = content.get(key[j]).toString().replaceAll("&lt;br&gt;",String.valueOf((char)10));}else{contentValue = content.get(key[j]).toString();}}cell[j][i].setCellValue(contentValue);}}//合并单元格for (int j = 0; j < rowList.size(); j++) {List<Integer> rlist = rowList.get(j);if(rlist.size()>0){if(rlist.get(rlist.size()-1)!=list.size()) rlist.add(list.size());for (int i = 0; i < rlist.size()-1; i++) {sheet.addMergedRegion(new CellRangeAddress(rlist.get(i)+1, rlist.get(i+1),j, j));}}}}fileName += ".xls";response.setContentType("application/octet-stream");response.setHeader("Content-Disposition","attachment;"+ (new StringBuilder("filename=").append(encode(request, fileName)).toString()));response.addHeader("Content-Length", "");ServletOutputStream localServletOutputStream = response.getOutputStream();workbook.write(localServletOutputStream);localServletOutputStream.flush();localServletOutputStream.close();}

设置样式，设置列宽方法

public void setStyle(HSSFFont titleFont,HSSFFont valueFont,HSSFCellStyle titleStyle,HSSFCellStyle valueStyle){//属性字体titleFont.setFontHeightInPoints((short) 11);titleFont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);//值字体valueFont.setFontHeightInPoints((short) 10);//属性格式titleStyle.setFont(titleFont);titleStyle.setBorderBottom((short) 1);titleStyle.setBorderLeft((short) 1);titleStyle.setBorderRight((short) 1);titleStyle.setBorderTop((short) 1);titleStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);titleStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);//值格式valueStyle.setFont(valueFont);valueStyle.setWrapText(true);valueStyle.setBorderBottom((short) 1);valueStyle.setBorderLeft((short) 1);valueStyle.setBorderRight((short) 1);valueStyle.setBorderTop((short) 1);valueStyle.setBottomBorderColor(HSSFColor.BLACK.index);valueStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);valueStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);}

设置编码方法

public String encode(HttpServletRequest request, String fileName)throws UnsupportedEncodingException {Boolean isIE = false;String[] IEBrowserSignals = {"MSIE", "Trident", "Edge"};String userAgent = request.getHeader("User-Agent");userAgent = userAgent == null ? "" : userAgent;for (String signal : IEBrowserSignals) {if (userAgent.contains(signal)){  isIE = true;}}if (isIE) {fileName = java.net.URLEncoder.encode(fileName, "UTF-8");} else {fileName = new String(fileName.getBytes("UTF-8"), "ISO-8859-1");}return fileName;}

前端代码就不发了，就一个导出按钮加一个url带参数，没其他的了

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