Java excel導入導出

週末閒來無事就先把Java導入導出的整理出來

1、導出excel模板(只是建立excel格式，供別人填寫，我剛學的方法還比較笨，但願諒解哈，之後有比較好的再補上)

1.1 代碼以下  個人都是應用於springmvc的示例

public class ExcelView extends AbstractExcelView {

    String [] list={"男","女"};//生成的excel模板，對於性別就有下拉框能夠選擇了

    @Override

    protected void buildExcelDocument(Map<String, Object> model, HSSFWorkbook workbook, HttpServletRequest request, HttpServletResponse response) throws Exception {

        //To change body of implemented methods use File | Settings | File Templates.

        HSSFSheet hssfSheet = workbook.createSheet("客戶基本信息");

        hssfSheet.setDefaultColumnWidth(20);// 設置的每一列的默認寬度

        HSSFCell hssfCell = getCell(hssfSheet,0,0);//聲明第一行第一列

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);//該單元格的類型爲String

        setText(hssfCell,"客戶名稱");//該單元格的文本

        hssfCell = getCell(hssfSheet,0,1);

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);

        setText(hssfCell,"省(福建省)");

        hssfCell = getCell(hssfSheet,0,2);

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);

        setText(hssfCell,"市(廈門市)");

        hssfCell = getCell(hssfSheet,0,3);

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);

        setText(hssfCell,"區/懸");

        hssfCell = getCell(hssfSheet,0,4);

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);

        setText(hssfCell,"公司名稱");

        hssfSheet.setColumnWidth(4, 30);

        hssfCell = getCell(hssfSheet,0,5);

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);

        setText(hssfCell,"公司詳細地址");

        hssfSheet.setColumnWidth(5, 100);

        hssfCell = getCell(hssfSheet,0,6);

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);

        setText(hssfCell, "職工人數");

        hssfCell = getCell(hssfSheet,0,7);

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);

        setText(hssfCell,"所屬行業");

        hssfSheet.setColumnWidth(7,50);

        hssfCell = getCell(hssfSheet,0,8);

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);

        setText(hssfCell,"所屬社區");

        hssfCell = getCell(hssfSheet,0,9);

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);

        setText(hssfCell,"登記人姓名");

        hssfCell = getCell(hssfSheet,0,10);

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);

        CellRangeAddressList regions = new CellRangeAddressList(0,1000,10,10);

        DVConstraint constraint = DVConstraint.createExplicitListConstraint(list);//建立下拉選擇

        HSSFDataValidation data_validation = new HSSFDataValidation(regions,constraint);

        hssfSheet.addValidationData(data_validation);

        setText(hssfCell, "登記人性別");

        hssfCell = getCell(hssfSheet,0,11);

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);

        setText(hssfCell,"***號");

        hssfCell = getCell(hssfSheet,0,12);

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);

        setText(hssfCell,"生日");

        hssfCell = getCell(hssfSheet,0,13);

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);

        setText(hssfCell,"戶籍");

        hssfCell = getCell(hssfSheet,0,14);

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);

        setText(hssfCell,"學歷");

        hssfCell = getCell(hssfSheet,0,15);

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);

        setText(hssfCell,"畢業院校");

        hssfCell = getCell(hssfSheet,0,16);

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);

        setText(hssfCell,"政治面貌");

        hssfCell = getCell(hssfSheet,0,17);

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);

        setText(hssfCell,"手機號碼");

        hssfCell = getCell(hssfSheet,0,18);

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);

        setText(hssfCell,"電話號碼");

        hssfCell = getCell(hssfSheet,0,19);

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);

        setText(hssfCell,"郵箱");

        hssfCell = getCell(hssfSheet,0,20);

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);

        setText(hssfCell,"郵編");

        hssfCell = getCell(hssfSheet,0,21);

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);

        setText(hssfCell,"傳真");

        hssfCell = getCell(hssfSheet,0,22);

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);

        setText(hssfCell,"愛好");

        hssfCell = getCell(hssfSheet,0,23);

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);

        setText(hssfCell,"職位");

        hssfCell = getCell(hssfSheet,0,24);

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);

        setText(hssfCell,"加入的社團或組織");

        hssfCell = getCell(hssfSheet,0,25);

        hssfCell.setCellType(HSSFCell.CELL_TYPE_STRING);

        setText(hssfCell,"工做經歷");

        response.setContentType("application/vnd.ms-excel");

        response.setHeader("Content-disposition", "p_w_upload;filename=" + URLEncoder.encode("客戶基本信息模板.xls","utf-8"));

        OutputStream ouputStream = response.getOutputStream();

        workbook.write(ouputStream);

        ouputStream.flush();

        ouputStream.close();

    }

}

Controller下的代碼：

@RequestMapping(value = "download_template_excel.do")

    public ModelAndView downLoadTemplateExcel(ModelMap modelMap){

        ExcelView excelView = new ExcelView();

        return new ModelAndView(excelView);

        //若是咱們也要傳數據過去也是能夠的，只須要將查詢出來的LIST放在modelMap裏面，而後經過new ModelAndView(excelView,modelMap)將數據傳給excelView，在該類裏面進行數據添加就能夠了。

    }

2、導入excel並解析獲得數據

目前作的文件上傳是直接點擊button按鈕就能夠選擇文件上傳，經過iframe嵌入上傳文件的表單

所引用的JS文件：

(function($) {

    var noop = function(){ return true; };

    var frameCount = 0;

    $.uploadDefault = {

        url: '',

        fileName: 'filedata',

        dataType: 'json',

        params: {},

        onSend: noop,

        onComplate: noop

    };

    $.upload = function(options) {

        var opts = $.extend(jQuery.uploadDefault, options);

        if (opts.url == '') {

            return;

        }

        var canSend = opts.onSend();

        if (!canSend) {

            return;

        }

        var frameName = 'upload_frame_' + (frameCount++);

        var iframe = $('<iframe style="position:absolute;top:-9999px" />').attr('name', frameName);

        var form = $('<form method="post" style="display:none;" enctype="multipart/form-data" />').attr('name', 'form_' + frameName);

        form.attr("target", frameName).attr('action', opts.url);

        // form中增長數據域

        var formHtml = '<input type="file" name="' + opts.fileName + '">';

        for (key in opts.params) {

            formHtml += '<input type="hidden" name="' + key + '" value="' + opts.params[key] + '">';

        }

        form.append(formHtml);

        iframe.appendTo("body");

        form.appendTo("body");

        // iframe 在提交完成以後

        iframe.load(function() {

            var contents = $(this).contents().get(0);

            var data = $(contents).find('body').html();

            var first = data.indexOf("{");

            var last = data.lastIndexOf("}");

            data = data.substring(first,last+1);

            if ('json' == opts.dataType) {

                data = window.eval('(' + data + ')');

            }

            opts.onComplate(data);

            setTimeout(function() {

                iframe.remove();

                form.remove();

            }, 5000);

        });

        // 文件框

        var fileInput = $('input[type=file][name=' + opts.fileName + ']', form);

        fileInput.change(function() {

            form.submit();

        });

        fileInput.click();

    };

})(jQuery);

頁面的JS：

function doImportExcel(){

                $.upload({

                    url:"import_crmCustBas.json",

                    params:{},

                    onComplate:function(data){

                        doSearch();

                        ChtUtil.getMessage().show("導入成功...");

                    }

                });

}

action:

 @RequestMapping(value = "import_crmCustBas.json",method = RequestMethod.POST)

    public ModelMap importExcel(ModelMap modelMap,MultipartHttpServletRequest request)throws IOException, BasException {

        List<MultipartFile> files = request.getFiles("filedata");

        if(files!=null){

            for (MultipartFile file : files) {

                InputStream in = file.getInputStream();

                //解析Excel

                crmCustBasServiceImpl.importExcel(in);

            }

        }

        modelMap = SpringModelTools.convertAjaxSuccess(modelMap);

        return modelMap;

    }

service:

public boolean importExcel(InputStream inputStream)throws IOException, BasException {

        boolean flag = true;

        List<Map<String,String>> list = UtilExcel.resolveExcel("custName,provinceId,cityId,townId,enterpriseName,enterpriseAddress,countEmployer,industry,community,username,sex,idCardNo,birthday,houseHold,degreeEducation,graduateSchool, politics,mobilePhone,phone,email,zip,chuanZhen,enjoy,position,joinOrgnise,workExperience", inputStream, 0, new HashMap<String,String>(), 1);

        if(list.size()>0){

            for(Map<String,String> map :list){

                CrmCustBas crmCustBas = new CrmCustBas();

                for(String key:map.keySet()){

                     if("custName".equals(key)){

                         crmCustBas.setCustName(map.get(key));

                     }else if("provinceId".equals(key)){

                         BsmArea bsmAreaProvinceId = basDao.queryOne(BsmArea.class,"name",map.get(key));

                         if(bsmAreaProvinceId!=null){

                             crmCustBas.setProvinceId(bsmAreaProvinceId.getId());

                         }else {

                             crmCustBas.setProvinceId("0");

                         }

                     }else if("cityId".equals(key)){

                         BsmArea bsmAreaCityId = basDao.queryOne(BsmArea.class,"name",map.get(key));

                         if(bsmAreaCityId!=null){

                             crmCustBas.setCityId(bsmAreaCityId.getId());

                         }else {

                             crmCustBas.setCityId("0");

                         }

                     }else if("townId".equals(key)){

                         BsmArea bsmAreaTownId = basDao.queryOne(BsmArea.class,"name",map.get(key));

                         if(bsmAreaTownId!=null){

                             crmCustBas.setTownId(bsmAreaTownId.getId());

                         }else {

                             crmCustBas.setTownId("0");

                         }

                     }else if("countEmployer".equals(key)){

                         String count = map.get(key);

                         Integer countEmployer = Integer.parseInt(count);

                         crmCustBas.setCountEmployer(countEmployer);

                     }else if("community".equals(key)){

                         crmCustBas.setCommunity(map.get(key));

                     }else if("username".equals(key)){

                         crmCustBas.setUsername(map.get(key));

                     }else if("sex".equals(key)){

                         if("男".equals(map.get(key))){

                             crmCustBas.setSex("0");

                         }else {

                             crmCustBas.setSex("1");

                         }

                     }else if("idCardNo".equals(key)){

                          crmCustBas.setIdCardNo(map.get(key));

                     }else if("birthday".equals(key)){

                          String str = map.get(key);

                         Date birthday = UtilDate.parseDate(str);

                         crmCustBas.setBirthday(birthday);

                     }else if("houseHold".equals(key)){

                          crmCustBas.setHouseHold(map.get(key));

                     }else if("degreeEducation".equals(key)){

                          crmCustBas.setDegreeEducation(map.get(key));

                     }else if("graduateSchool".equals(key)){

                          crmCustBas.setGraduateSchool(map.get(key));

                     }else if("politics".equals(key)){

                          crmCustBas.setPolitics(map.get(key));

                     }else if("mobilePhone".equals(key)){

                           crmCustBas.setMobilePhone(map.get(key));

                     }else if("phone".equals(key)){

                          crmCustBas.setPhone(map.get(key));

                     }else if("email".equals(key)){

                          crmCustBas.setEmail(map.get(key));

                     }else if("zip".equals(key)){

                          crmCustBas.setZip(map.get(key));

                     }else if("chuanZhen".equals(key)){

                           crmCustBas.setChuanZhen(map.get(key));

                     }else if("enjoy".equals(key)){

                            crmCustBas.setEnjoy(map.get(key));

                     }else if("position".equals(key)){

                           crmCustBas.setPosition(map.get(key));

                     }else if("joinOrgnise".equals(key)){

                           crmCustBas.setJoinOrgnise(map.get(key));

                     }else if("workExperience".equals(key)){

                           crmCustBas.setWorkExperience(map.get(key));

                     }

                }

                   if(!"".equals(crmCustBas.getMobilePhone())&&crmCustBas.getMobilePhone()!=null){

                       QueryCondition queryCondition = new QueryCondition();

                       queryCondition.setQueryObject(CrmCustBas.class);

                       queryCondition.addField(new QueryField("mobilePhone",crmCustBas.getMobilePhone(),QueryField.CONDITION_EQ));

                       queryCondition.addField(new QueryField("custName",crmCustBas.getCustName(),QueryField.CONDITION_EQ));

                       List<CrmCustBas> haveList = basDao.query(queryCondition);

                       if(haveList.size()>0){

                           continue;

                       }else{

                           crmCustBas.setCustNo(getNo());

                           crmCustBas.setCustPoint(0);

                           basDao.save(crmCustBas);

                       }

                   }

            }

        }

        return flag;

    }

UtilExcel:

public static List resolveExcel(String arrayCloumns,InputStream inputStream,int sheetCount,Object object,int startRows) throws BasException{

List list=new ArrayList();

Workbook book =null;

try {

//解析模板爲,號分割串

book = Workbook.getWorkbook(inputStream);

Sheet sheet = book.getSheet(sheetCount); 

//列數

int columnCount=sheet.getColumns();

//行數

int rowCount=sheet.getRows(); 

Cell cell = null; 

String[] arraycol=arrayCloumns.split(",");

for (int i = startRows; i <rowCount; i++) { 

Object obj=UtilBean.getNewClass(object.getClass());

    for (int j = 0; j <columnCount; j++) {

                     String arrcol=arraycol[j];

                     cell =sheet.getCell(j, i);

                     String val=cell.getContents();

                     //若是是日期類型

                     if(cell.getType() == CellType.DATE){

                         DateCell datec11 = (DateCell)cell;

                         Date date = datec11.getDate();

                         val = UtilDate.formatDate(date);

                     }

                     //若是是金額類型

                     if(val.contains("$")){

                         val =  val.replace("$", "").replace(",", "");

                     }

                     if(object instanceof Map){

                         ((Map)obj).put(arrcol,val);

                     }

                     else{

                         BeanUtils.setProperty(obj, arrcol, val);

                     }

    }

    list.add(obj);

} 

}catch (Exception e) {

log.error("excel解析錯誤,錯誤消息："+e.getMessage());

throw new BasRuntimeException("excel解析錯誤",e);

}finally{

if(book!=null){

book.close(); 

}

}

  return list;

}

以上一二是我在CRM用的方式，接下來是我在活動平臺項目所用的方式，其實也差很少，可是爲了讓本身能夠記住，仍是將其寫下來了。

3、導入excel

<form id="formUpload" name="formUpload" action="<%=request.getContextPath()%>/import_linkman_excel.do" method="post" enctype="multipart/form-data">

            <table class="tableCon2" style="background:#fff;">

                <tbody><tr>

                    <td><div class="importUserLayer">

                        <table>

                            <tbody><tr>

                                <td width="154" height="57" align="right" valign="top">選擇須要導入的文件：</td>

                                <td width="434"><p>

                                    <input type="file" id="myfiles" style="border: 1px solid #CCCCCC; height: 24px;background: #FFFFFF" name="myfiles" size="45">

                                </p>

                                    <p>支持<font style="color:#FF0000">.XLS</font>格式 </p></td>

                            </tr>

                            <tr>

                                <td height="40" align="right">導入到組：</td>

                                <td>

                                    <select name="groupId" id="group" class="textfield citySelect" style="width:82px;height:22px; text-indent:0px;">

                                    </select></td>

                            </tr>

                            <tr>

                                <td colspan="2"><div class="Contactsindex">

                                    <p><strong> 提示：導入文件需知足三個條件：</strong></p>

                                    <p style=" padding-left:20px;"> a) 文件第一行必須爲每列數據的名稱，例如：姓名、手機、郵件地址、職位、部門等。</p>

                                    <p style=" padding-left:20px;"> b) 導入信息必須包含姓名、手機或mail。</p>

                                    <p style=" padding-left:20px;"> c) 文件爲.csv或.xls格式。目前不支持Excel2007或更高版本的xlsx文件，請另存爲Excel2003格式或者.csv格式。</p>

                                </div></td>

                            </tr>

                            </tbody></table>

                    </div></td>

                </tr>

                </tbody></table>

        </form>

 function saveFile(){

            $("#formUpload").submit();

 }

action:

  @RequestMapping(value = "import_linkman_excel.do")

    public String importExcel(@RequestParam(value = "groupId",required = false)String groupId,@RequestParam MultipartFile[] myfiles,HttpServletRequest request,HttpServletResponse response){

        MultipartFile imgFileName = myfiles[0];

        String booleanString = "";

        String fileName = imgFileName.getOriginalFilename();

        if(fileName!=null||!"".equals(fileName)){

            String ext = fileName.substring(fileName.lastIndexOf(".")+1,fileName.length());

            //對擴展名進行小寫轉換

            ext = ext.toLowerCase();

            if("xls".equals(ext)){

                try {

                    List<CommLinkmanInfoVO> list = UtilExcel.resolveExcel("linkmanName,sex,email,phone,mobilePhone,fax,zipCode,company,deptName,industryTypeNo,position,address,qq",imgFileName.getInputStream(),0,new CommLinkmanInfoVO(),1);

                    if(list.size()>0){

                        for(CommLinkmanInfoVO commLinkmanInfoVO : list){

                            List<CommLinkmanInfoVO> haveList = commLinkmanInfoServiceImpl.queryListByGroupId(groupId);

                            if(haveList.size()>0){

                                for(CommLinkmanInfoVO equalVO : haveList){

                                    if(equalVO.getPhone()==commLinkmanInfoVO.getPhone()){

                                        //預留已經存在的返回消息

                                        continue;

                                    }else {

                                        commLinkmanInfoVO.setGroupId(groupId);

                                        commLinkmanInfoServiceImpl.saveLinkman(commLinkmanInfoVO);

                                    }

                                }

                            }else{

                                commLinkmanInfoVO.setGroupId(groupId);

                                commLinkmanInfoServiceImpl.saveLinkman(commLinkmanInfoVO);

                            }

                        }

                    }

                } catch (Exception e) {

                    e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.

                }

            }

        }

        return  "redirect:/comm_linkman_index.do?groupId="+groupId;

    }

四 導出excel

 @RequestMapping(value = "export_select_link.do")

    public String exportSelect(@RequestParam(value="delistJson",required = false)String delistJson,@RequestParam(value="groupId",required = false)String groupId,

                               @RequestParam(value="groupName",required = false)String groupName,HttpServletResponse response,HttpServletRequest request

    ){

        List<IdVO> idVOs = JsonUtils.getList(delistJson,IdVO.class);

        List<CommLinkmanInfoVO> list = new ArrayList<CommLinkmanInfoVO>();

        if(idVOs.size()>0){

            List<String> eventListId = new ArrayList<String>();

            for(int i=0;i< idVOs.size();i++){

                String id = idVOs.get(i).getId();

                eventListId.add(id);

            }

            list = commLinkmanInfoServiceImpl.queryListByListId(eventListId);

            try {

                groupName = new String(groupName.getBytes("iso-8859-1"),"utf-8");

                if(groupName==null||"".equals(groupName)){

                    groupName = "所選聯繫人";

                }

            } catch (UnsupportedEncodingException e) {

                e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.

            }

            String uploadPath = "/upload";

            String realUploadFilePath = request.getSession().getServletContext().getRealPath(uploadPath);

            String filePath = realUploadFilePath+ File.separator+groupName + "名單.xls";

            try {

                UtilExcel.writeListToExcel(groupName + "名單", list, filePath, "linkmanName,sex,email,phone,mobilePhone,fax,zipCode,company,deptName,industryTypeNo,position,address,qq;", "名字,性別,郵箱,電話,手機,傳真,郵編,公司,部門,行業,職位,地址,QQ");

                String filename  =  groupName+"名單"+".xls";

                filename = new String(filename.getBytes("utf-8"),"iso-8859-1");

                response.reset();

                response.setContentType("application/vnd.ms-excel");

                response.setHeader("Content-disposition", "p_w_upload;filename="+filename);

                OutputStream ouputStream = response.getOutputStream();

                InputStream inputStream = new FileInputStream(new File(filePath));

                byte buffer[]=new byte[4*1024];

                int len = 0;

                while((len = inputStream.read(buffer)) != -1)//

                {

                    ouputStream.write(buffer,0,len);

                }

                ouputStream.flush();

                ouputStream.close();

                UtilFile.delFile(filePath);

            } catch (Exception e) {

                e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.

            }

        }

        return null;

    }

public static void writeListToExcel(String titleName,List list, String filename, String sheetName, String columnNames,

String columnDisplayNames, boolean isDeleteFile, String sumOnColumn, String promptStringForSum,String conditions){

//入參校驗

if (list == null || UtilString.isEmpty(filename) || UtilString.isEmpty(columnNames)

|| UtilString.isEmpty(columnDisplayNames)){

            throw new BasRuntimeException("參數錯誤，請保證參數爲非空。");

}

String[] columnName = columnNames.split(",");

String[] columnDisplayName = columnDisplayNames.split(",");

Workbook rwBook=null;

WritableWorkbook book = null;

if(UtilString.isEmpty(sheetName)){

sheetName = "sheet1";

}

int numberOfFields = columnName.length, result = 0;

int[] columnWidths = new int[numberOfFields];

try {

String path =filename.substring(0,filename.lastIndexOf("\\"));

if(path!=null&&!"".equals(path)){

File tmp = new File(path);

if(!tmp.isDirectory()){

tmp.mkdirs();

}

}

File file = new File(filename);

if(isDeleteFile && file.exists())

file.delete();

//建立一個可寫的工做簿    

if(file.exists()) {

rwBook = Workbook.getWorkbook(file);

book = Workbook.createWorkbook(file, rwBook);

} else{

book = Workbook.createWorkbook(file);

}

int workingSheetNo = file.exists() ? book.getNumberOfSheets() + 1 : 1;

//添加一個工做表    

WritableSheet ws = book.createSheet(sheetName, workingSheetNo);

//輸出大標題

ws.mergeCells(0, 0, numberOfFields-1, 0);

ws.setRowView(0, 500);

Label labelC00 = new Label(0, 0, titleName, getBigTitleStyle(16));

ws.addCell(labelC00);

//添加帶有字型Formatting的對象,用來輸出標題行

int k = 1,row=2;

if(!UtilString.isEmpty(conditions)){

k=2;

row=3;

ws.mergeCells(0, 1, numberOfFields-1, 1);

ws.setRowView(0, 500);

Label labelC01 = new Label(0, 1, conditions, getBigTitleStyle(16));

ws.addCell(labelC01);

}

//輸出列頭

for (int j = 0; j < numberOfFields; j++) {

                //設置列寬度

jxl.write.Label label = new jxl.write.Label(j, k, columnDisplayName[j], getColumnHeadStyle());

ws.addCell(label);

columnWidths[j] = columnDisplayName[j].length();

}

//建立數字單元格式對象

       jxl.write.NumberFormat nf = new jxl.write.NumberFormat(DECIMAL_FORMAT);

       jxl.write.WritableCellFormat wcfNumber = new jxl.write.WritableCellFormat(nf);

//建立TimeStamp單元格式對象

       jxl.write.DateFormat dfTS = new jxl.write.DateFormat(DATE_FORMAT+ " hh:mm:ss");

       jxl.write.WritableCellFormat wcfTimestamp = new jxl.write.WritableCellFormat(dfTS);

//建立日期單元格式對象

       jxl.write.DateFormat dfDate = new jxl.write.DateFormat(DATE_FORMAT);

       jxl.write.WritableCellFormat wcfDate = new jxl.write.WritableCellFormat(dfDate);

int  indexForSumColumn = 0;

double total = 0;

boolean isNeededSum = !UtilString.isEmpty(sumOnColumn);

//將List中的對象輸出到excel

for (int i = 0; i < list.size(); i++) {

//Map map = (HashMap) list.get(i);//List中的每一個對象都是hashMap,map包含字段名和值

Object _object = list.get(i);

if (_object == null)

continue;

Map map=null;

Object vo = null;

if(_object instanceof Map){//判斷該List對象是Map仍是VO

map = (HashMap) list.get(i);

}else{

vo = list.get(i);

}

for (int column = 0; column < numberOfFields; column++) {

//當對象爲空時，若是繼續調用jxl的API，常常會出異常，因此先檢測

Object obj = null;

if(map!=null){

obj= map.get(columnName[column]);

} else if(vo!=null){

obj = UtilBean.getProperty(vo, columnName[column]);

}

if (obj == null)

continue;

//若是須要統計，將從map中讀到的值累加到total,同時設置統計列的位置，用於最後輸出統計信息

if (isNeededSum) {

if (columnName[column].equals(sumOnColumn)) {

total += Double.parseDouble(obj.toString());

indexForSumColumn = column;

}

}

//設置列的寬度值

if(obj.toString().length() > columnWidths[column])

columnWidths[column] = obj.toString().length();

if (obj instanceof String) {

jxl.write.Label label = new jxl.write.Label(column, row, (String) obj);

ws.addCell(label);

} else if ((obj instanceof Integer)) {

jxl.write.Number number = new jxl.write.Number(column, row, ((Integer) obj).doubleValue(), wcfNumber);

ws.addCell(number);

} else if (obj instanceof Timestamp) {

jxl.write.DateTime datetime = new jxl.write.DateTime(column, row, (Timestamp) obj, wcfTimestamp);

ws.addCell(datetime);

} else if (obj instanceof BigDecimal) {

jxl.write.Number number = new jxl.write.Number(column, row, ((BigDecimal) obj).doubleValue(), wcfNumber);

ws.addCell(number);

} else if (obj instanceof Double) {

jxl.write.Number number = new jxl.write.Number(column, row, ((Double) obj).doubleValue(), wcfNumber);

ws.addCell(number);

} else if (obj instanceof Float) {

jxl.write.Number number = new jxl.write.Number(column, row, ((Float) obj).doubleValue(), wcfNumber);

ws.addCell(number);

} else if ((obj instanceof Long)) {

jxl.write.Number number = new jxl.write.Number(column, row, ((Long) obj).doubleValue(), wcfNumber);

ws.addCell(number);

} else if ((obj instanceof Short)) {

jxl.write.Number number = new jxl.write.Number(column, row, ((Short) obj).doubleValue(), wcfNumber);

ws.addCell(number);

} else if (obj instanceof Date) {

jxl.write.DateTime datetime = new jxl.write.DateTime(column, row, (Date) obj, wcfDate);

ws.addCell(datetime);

} else if (obj instanceof Boolean) {

jxl.write.Boolean labelB = new jxl.write.Boolean (column, row,  ((Boolean)obj).booleanValue());

ws.addCell(labelB);

} else {

//把其餘類型都做爲字符串處理

jxl.write.Label label = new jxl.write.Label(column, row, (String) obj);

ws.addCell(label);

}

}

row++;

}

//輸出統計信息

if (isNeededSum) {

jxl.write.Label labelPrompt = new jxl.write.Label(indexForSumColumn - 1, row + 1, promptStringForSum);

ws.addCell(labelPrompt);

jxl.write.Number number = new jxl.write.Number(indexForSumColumn, row + 1, total, wcfNumber);

ws.addCell(number);

//更新彙總信息的列寬度

if(promptStringForSum.length() > columnWidths[indexForSumColumn - 1])

columnWidths[indexForSumColumn - 1] = promptStringForSum.length();

if(String.valueOf(total).length() > columnWidths[indexForSumColumn])

columnWidths[indexForSumColumn] = String.valueOf(total).length();

}

//調整列的寬度

for (int i = 0; i < columnWidths.length; i++) {

//設定列的最大最小寬度爲200和6

if(columnWidths[i] > 100)

columnWidths[i] = 100;

if(columnWidths[i] < 6){

columnWidths[i] = 6;

}

ws.setColumnView(i, columnWidths[i]+1);

}

} catch (Exception e) {

log.error("寫Excel失敗。" + e.getMessage());

throw new BasRuntimeException("寫入Excel失敗",e);

} finally {

try {

if (book != null) {

book.write();

book.close();

if(rwBook!=null){

rwBook.close();

}

}

} catch (Exception e) {

}

}

}