zoukankan html css js c++ java

java 功能点

1. 根据页面中table返回excel,不请求后台

.factory('exportExcelService',function($window){
        var uri='data:application/vnd.ms-excel;base64,',
            template='<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns="http://www.w3.org/TR/REC-html40"><head><!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets><x:ExcelWorksheet><x:Name>{worksheet}</x:Name><x:WorksheetOptions><x:DisplayGridlines/></x:WorksheetOptions></x:ExcelWorksheet></x:ExcelWorksheets></x:ExcelWorkbook></xml><![endif]--></head><body><table>{table}</table></body></html>',
            base64=function(s){return $window.btoa(unescape(encodeURIComponent(s)));},
            format=function(s,c){return s.replace(/{(w+)}/g,function(m,p){
                return c[p];
            })};
        return {
            tableToExcel:function(tableId,worksheetName){
                var table=$(tableId);
                var ctx={worksheet:worksheetName,table:table.html()};
                var    href=uri+base64(format(template,ctx));
                return href;
            }
        };
    })

2. 后台请求生成excel

@RequestMapping("/exportExcelRecord")
    public void ExportExcelRecord(MedicalCardModel medicalCardModel,HttpServletResponse response){
        List<MedicalCardResultModel> result=medicalCardService.getMedicalRecord(medicalCardModel);
        int size  = result.size();
        OutputStream out =null;
        try {
            out = ExcelBasePoiUtils.setResponse(response, "record.xlsx");
            SXSSFWorkbook wb = new SXSSFWorkbook(5000);
            Sheet sh = wb.createSheet();
            ExcelDataFormatter edf = new ExcelDataFormatter();
            Map<String, String> mapGender = new HashMap<String, String>();
            mapGender.put(IS_MAN+"", GenderEnums.getName(IS_MAN));
            mapGender.put(IS_WOMAN+"", GenderEnums.getName(IS_WOMAN));
            edf.set("gender", mapGender);
            List<MedicalCardResultModel> list =null;
            for (int i = 0; i < size; i = i + EXCEL_MAX_FROM＿DB) {
                list=(size-i>EXCEL_MAX_FROM＿DB?result.subList(i, i + EXCEL_MAX_FROM＿DB):result.subList(i,i+size));
                ExcelBasePoiUtils.getWorkBook(list, sh, wb, edf);
            }
            wb.write(out);
            wb.dispose();
            ExcelBasePoiUtils.close(out);
        } catch (Exception e) {
        }
    }

public static <T> void getWorkBook(List<T> list, Sheet sh, Workbook book, ExcelDataFormatter edf) throws Exception {
        Field[] fields = ReflectUtils.getClassFieldsAndSuperClassFields(list.get(0).getClass());
        Excel excel = null;
        Cell cell = null;
        Row row = null;
        int columnIndex = 0;
        if(sh.getLastRowNum() == 0){
            row = sh.createRow(0);
            XSSFCellStyle titleStyle = setTitleStyle(book);
            for (Field field : fields) {
                field.setAccessible(true);
                excel = field.getAnnotation(Excel.class);
                if (excel == null || excel.skip() == true) {
                    continue;
                }
                sh.setColumnWidth(columnIndex, excel.width() * 256);
                cell = row.createCell(columnIndex);
                cell.setCellStyle(titleStyle);
                cell.setCellValue(excel.value());
                columnIndex++;
            }
        }
        
        CellStyle cs = book.createCellStyle();
        CreationHelper createHelper = book.getCreationHelper();
        for (T t : list) {
            int rowColumn = ThreadLocalUtils.get();
            row = sh.createRow(rowColumn);
            columnIndex = 0;
            Object o;
            for (Field field : fields) {
                field.setAccessible(true);
                excel = field.getAnnotation(Excel.class);
                if (excel == null || excel.skip() == true) {
                    continue;
                }

                cell = row.createCell(columnIndex);
                o = field.get(t);
                //常用类型置前
                if (o == null) {
                    cell.setCellValue("");
                }else if(o instanceof String){
                    cell.setCellValue((String)o);
                }else if (o instanceof Integer){
                    Integer intValue = (Integer)o;
                    if (edf == null) {
                        cell.setCellValue(intValue);
                    } else {
                        Map<String, String> map = edf.get(field.getName());
                        if (map == null) {
                            cell.setCellValue(intValue);
                        } else {
                            cell.setCellValue(map.get(intValue.toString()));
                        }
                    }
                }else if (o instanceof Date) {
                    cs.setDataFormat(createHelper.createDataFormat().getFormat("yyyy-MM-dd HH:mm:ss"));
                    cell.setCellStyle(cs);
                    cell.setCellValue((Date) o);
                } else if (o instanceof Double || o instanceof Float) {
                    cell.setCellValue((Double) o);
                } /*else if (o instanceof Boolean) {
                    Boolean boolValue = (Boolean) o;
                    if (edf == null) {
                        cell.setCellValue(boolValue);
                    } else {
                        Map<String, String> map = edf.get(field.getName());
                        if (map == null) {
                            cell.setCellValue(boolValue);
                        } else {
                            cell.setCellValue(map.get(boolValue.toString().toLowerCase()));
                        }
                    }
                }*/else if (o instanceof Long){
                    Long longValue = (Long)o;
                    cell.setCellValue(longValue);
                }else {
                    cell.setCellValue(o.toString());
                }
                columnIndex++;
            }
            ThreadLocalUtils.add();
        }
    }

/**
     * 释放资源
     * @param os
     * @throws IOException
     */
    public static void close(OutputStream os) throws IOException{
        ThreadLocalUtils.remove();
        os.flush();
        os.close();
    }

/**
 * 
 * <p>Description: Excel 注解， 配合反射完成Excel 到  javaBean 的映射</p>
 * <p>Company: GDKJ</p>
 * @author wbw
 * @version 1.0.0
 * @date 2017年3月2日
 */
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.FIELD, ElementType.TYPE})
public @interface Excel {
    String value() default "";
    int width() default 20;
    boolean skip() default false;
}

    @Excel(value="序号",skip=true)
    private Long id;

    @Excel("病案号")
    private String caseNo;

3. 导入excel

@RequestMapping("/importExcelRecord")
    public DataModel<Object> ImportExcelRecord(MultipartFile file){

List<String> caseNoList = new ArrayList<String>();
		try {
			caseNoList = ExcelImport.readExcel(file);
			if(caseNoList.size()<1)
			{
				return ResultMapUtils.getResultMap(model);
			}
		} catch (Exception e) {
			e.printStackTrace();
			return ResultMapUtils.getFailResultMap(Constants.GET_ERROR_KEY, e.getMessage());
		}

/**
	 * 读excel
	 * @param file
	 * @return
	 * @throws IOException
	 */
	public static List<String> readExcel(MultipartFile file) throws IOException {
		String fileName = file.getOriginalFilename();
		String extension = fileName.lastIndexOf(".") == -1 ? "" : fileName
				.substring(fileName.lastIndexOf(".") + 1);
		if ("xls".equals(extension)) {
			return read2003Excel(file);
		} else if ("xlsx".equals(extension)) {
			return read2007Excel(file);
		} else {
			throw new IOException("不支持的文件类型");
		}
	}

	/**
	 * 读取 office 2003 excel
	 * 第二个参数： 是哪列开启非空效验，如果是-1就开启全部非空效验,列从0开始
	 * @throws IOException
	 * @throws FileNotFoundException
	 * @author wbw
	 */
	private static List<String> read2003Excel(MultipartFile file)
			throws IOException {
		HSSFWorkbook hwb = new HSSFWorkbook(file.getInputStream());
		HSSFSheet sheet = hwb.getSheetAt(0);
		String value = null;
		HSSFRow row = null;
		HSSFCell cell = null;
		List<String> result = new ArrayList<String>();
		for (int i = sheet.getFirstRowNum(); i < sheet.getPhysicalNumberOfRows(); i++) 
		{
			row = sheet.getRow(i);
			if (row == null) {
				continue;
			}
			int firstColumn=row.getFirstCellNum();
			cell = row.getCell(firstColumn);
			if (cell == null)
			{
				continue;
			}
			DecimalFormat df = new DecimalFormat("0");// 格式化 number String
			switch (cell.getCellType())
			{
				case XSSFCell.CELL_TYPE_STRING:
					value =cell.getStringCellValue();
					break;
				case XSSFCell.CELL_TYPE_NUMERIC:
					if ("@".equals(cell.getCellStyle().getDataFormatString())) 
					{
						value = df.format(cell.getNumericCellValue()).toString();
					} else if ("General".equals(cell.getCellStyle()
							.getDataFormatString())) {
						value = df.format(cell.getNumericCellValue());
					} 
					break;
				default:
					value = "";
			}
			if (value == null || "".equals(value)) {
				continue;
			}
			result.add(value);
		}
		return result;
	}

	/**
	 * 读取Office 2007 excel
	 * */
	private static List<String> read2007Excel(MultipartFile file) 
			throws IOException {
		XSSFWorkbook xwb = new XSSFWorkbook(file.getInputStream());
		XSSFSheet sheet = xwb.getSheetAt(0);
		String value = null;
		XSSFRow row = null;
		XSSFCell cell = null;
		List<String> result = new ArrayList<String>();
		for (int i = sheet.getFirstRowNum(); i < sheet.getPhysicalNumberOfRows(); i++) 
		{
			row = sheet.getRow(i);
			if (row == null) {
				continue;
			} 
			cell = row.getCell(row.getFirstCellNum());
			if (cell == null) {
				continue;
			}
			DecimalFormat df = new DecimalFormat("0");// 格式化 number String
			switch (cell.getCellType()) 
			{
				case XSSFCell.CELL_TYPE_STRING:
					value = cell.getStringCellValue();
					break;
				case XSSFCell.CELL_TYPE_NUMERIC:
					if ("@".equals(cell.getCellStyle().getDataFormatString())) 
					{
						value = df.format(cell.getNumericCellValue()).toString();
					} else if ("General".equals(cell.getCellStyle()
							.getDataFormatString())) {
						value = df.format(cell.getNumericCellValue());
					} 
					break;
				default:
					value = "";
			}
			if (value == null || "".equals(value)) {
				continue;
			}
			result.add(value);
		}
		return result;
	}

4. 点击编辑，编辑变保存，输入框可编辑，获取焦点

<td style="padding: 0px 0px;">
                        <input type="text" name="correction" class="form-control" ng-model="cor.correction" ng-readonly="checkEdit"/>
                    </td>
                    <td>{{cor.operator}}</td>
                    <td>{{cor.updatetime | date:'yyyy-MM-dd'}}</td>
                    <td>
                        <a href="javascript:void(0)" class="operate_a" ng-click="editSec($event,cor.id,cor.correction)">编辑</a>

$scope.checkEdit = true;
 
$scope.editSec = function (event,id,context) {
        if(angular.element(event.target).context.innerHTML == "编辑"){
            $scope.checkEdit = false;
            angular.element(event.target).parents("tr").find("input").focus();
            angular.element(event.target).context.innerHTML = "保存";
        }else{
            $scope.updateCor(id,context);
            $scope.checkEdit = true;
            angular.element(event.target).context.innerHTML = "编辑";

        }

    }

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原文地址：https://www.cnblogs.com/yangfei-beijing/p/6603816.html