- 介绍：对Apache POI 3.9的简单封装，实现Excel的导出导入功能。使用Annotation定义导出导入字段。
- 优点：1.简单易用，支持大数量导出，配置简单，代码量少。
2.支持Excel 2003、2007、2010（xls、xlsx）格式。
3.支持简单格式设置，对齐方式，排序等
4.可导出字典类型数据，自定义数据字段类型（例如：部门关联对象，部门名称与部门编号互转）。
5.无需建立导入模板，系统自动生成。
- 缺点：1.格式单一，无法导出格式比较复杂的表格。
2.不能使用模板进行导入，导出。
- pom.xml添加依赖
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.9</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.9</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.3.2</version>
</dependency>
<dependency>
<groupId>com.google.collections</groupId>
<artifactId>google-collections</artifactId>
<version>1.0</version>
</dependency>
一.实例
1.导出实例
/** * * @author yuzj * @date 2017年3月3日 下午2:59:05 * @description 数据导出 * @param childBaseinfo * @param request * @param response * @param redirectAttributes * @return * @throws ParseException * */ @RequestMapping(value = "export", method = RequestMethod.POST) public String exportFile(ChildBaseinfo childBaseinfo, HttpServletRequest request, HttpServletResponse response, RedirectAttributes redirectAttributes, @RequestParam String beginTime, @RequestParam String endTime, @RequestParam String birthbeginTime, @RequestParam String birthendTime) throws ParseException { // 判断出生日期的格式 if (StringUtils.isNoneBlank(birthbeginTime)) { Date birthbegin = childBaseinfoService.convert(birthbeginTime); Date birthend = childBaseinfoService.convert(birthendTime); if (birthbegin == null || birthend == null) { addMessage(redirectAttributes, "你输入的出生日期格式不正确"); return "redirect:" + Global.getAdminPath() + "/child_baseinfo/documentStatistics/?repage"; } Date birthd[] = childVaccinaterecordService.date(birthbegin,birthend); if (birthd != null) { childBaseinfo.setBirthbeginTime(birthd[0]); childBaseinfo.setBirthendTime(birthd[1]); } else { addMessage(redirectAttributes, "你输入的出生日期起时间晚于止时间"); return "redirect:" + Global.getAdminPath() + "/child_baseinfo/documentStatistics/?repage"; } } // 起止时间 if (StringUtils.isNoneBlank(beginTime)) { Date begin = childBaseinfoService.convert(beginTime); Date end = childBaseinfoService.convert(endTime); Date d[] = childVaccinaterecordService.date(begin, end); if (d != null) { childBaseinfo.setBeginTime(d[0]); childBaseinfo.setEndTime(d[1]); } } if (StringUtils.isNoneBlank(childBaseinfo.getOfficeinfo()) && "1".equals(childBaseinfo.getOfficeinfo())) { childBaseinfo.setOfficeinfo(OfficeService.getFirstOffice() .getCode()); } else { childBaseinfo.setOfficeinfo(""); } Page<ChildBaseinfo> page = new Page<ChildBaseinfo>(); // 根据名字和时间排序 page.setOrderBy("A.createdate ASC"); page = childBaseinfoService.findPage(page, childBaseinfo); childBaseinfo.setPage(page); List<ChildBaseinfo> list = childBaseinfoService.findList_exp(childBaseinfo); if (list.size() > 0) { for (ChildBaseinfo childBaseinfo2 : list) { // 转换地址信息 childBaseinfo2 = childBaseinfoService.updateAddr(childBaseinfo2); } } try { String fileName = "档案数据" + DateUtils.getDate("yyyyMMddHHmmss")+ ".xlsx"; new ExportExcel("档案数据", ChildBaseinfo.class).setDataList(list).write(response, fileName).dispose(); return null; } catch (Exception e) { addMessage(redirectAttributes, "导出档案失败！失败信息：" + e.getMessage()); } return "redirect:" + Global.getAdminPath()+ "/child_baseinfo/childBaseinfo/?repage"; }
2.导入实例
public String importFile(MultipartFile file) { try { int successNum = 0; int failureNum = 0; StringBuilder failureMsg = new StringBuilder(); // 创建导入Excel对象 ImportExcel ei = new ImportExcel(file, 1, 0); // 获取传入Excel文件的数据，根据传入参数类型，自动转换为对象 List<User> list = ei.getDataList(User.class); // 遍历数据，保存数据 for (User user : list){ try{ if ("true".equals(checkLoginName("", user.getLoginName()))){ user.setPassword(SystemService.entryptPassword("123456")); BeanValidators.validateWithException(validator, user); systemService.saveUser(user); successNum++; }else{ failureMsg.append("<br/>登录名 "+user.getLoginName()+" 已存在; "); failureNum++; } }catch(ConstraintViolationException ex){ failureMsg.append("<br/>登录名 "+user.getLoginName()+" 导入失败："); List<String> messageList = BeanValidators.extractPropertyAndMessageAsList(ex, ": "); for (String message : messageList){ failureMsg.append(message+"; "); failureNum++; } }catch (Exception ex) { failureMsg.append("<br/>登录名 "+user.getLoginName()+" 导入失败："+ex.getMessage()); } } if (failureNum>0){ failureMsg.insert(0, "，失败 "+failureNum+" 条用户，导入信息如下："); } addFlashMessage("已成功导入 "+successNum+" 条用户"+failureMsg); } catch (Exception e) { addFlashMessage("导入用户失败！失败信息："+e.getMessage()); } return "redirect:"+BaseController.ADMIN_PATH+"/sys/user/?repage"; }
3.模板下载
public String importFileTemplate() { try { String fileName = "用户数据导入模板.xlsx"; List<User> list = Lists.newArrayList(); list.add(UserUtils.getUser(true)); // 第三个参数设置为“2”表示输出为导入模板（1:导出数据；2：导入模板） new ExportExcel("用户数据", User.class, 2).setDataList(list).write(response, fileName).dispose(); return null; } catch (Exception e) { addFlashMessage("导出用户失败！失败信息："+e.getMessage()); } return "redirect:"+BaseController.ADMIN_PATH+"/sys/user/?repage"; }
二、.工具类ExportExcel.java
/** * Copyright © 2012-2014 <a href="https://github.com/thinkgem/jeesite">JeeSite</a> All rights reserved. */ package com.thinkgem.jeesite.common.utils.excel; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStream; import java.lang.reflect.Field; import java.lang.reflect.Method; import java.text.SimpleDateFormat; import java.util.Collections; import java.util.Comparator; import java.util.Date; import java.util.HashMap; import java.util.List; import java.util.Map; import javax.servlet.http.Cookie; import javax.servlet.http.HttpServletResponse; import org.apache.commons.lang3.StringUtils; import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.ss.usermodel.CellStyle; import org.apache.poi.ss.usermodel.Comment; import org.apache.poi.ss.usermodel.Font; import org.apache.poi.ss.usermodel.IndexedColors; import org.apache.poi.ss.usermodel.Row; import org.apache.poi.ss.usermodel.Sheet; import org.apache.poi.ss.usermodel.Workbook; import org.apache.poi.ss.util.CellRangeAddress; import org.apache.poi.xssf.streaming.SXSSFWorkbook; import org.apache.poi.xssf.usermodel.XSSFClientAnchor; import org.apache.poi.xssf.usermodel.XSSFRichTextString; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import com.google.common.collect.Lists; import com.thinkgem.jeesite.common.utils.DateUtils; import com.thinkgem.jeesite.common.utils.Encodes; import com.thinkgem.jeesite.common.utils.Reflections; import com.thinkgem.jeesite.common.utils.excel.annotation.ExcelField; import com.thinkgem.jeesite.modules.sys.utils.DictUtils; /** * 导出Excel文件（导出“XLSX”格式，支持大数据量导出 @see org.apache.poi.ss.SpreadsheetVersion） * @author ThinkGem * @version 2013-04-21 */ public class ExportExcel { private static Logger log = LoggerFactory.getLogger(ExportExcel.class); /** * 工作薄对象 */ private SXSSFWorkbook wb; /** * 工作表对象 */ private Sheet sheet; /** * 样式列表 */ private Map<String, CellStyle> styles; /** * 当前行号 */ private int rownum; /** * 注解列表（Object[]{ ExcelField, Field/Method }） */ List<Object[]> annotationList = Lists.newArrayList(); /** * @author QianHW * @param sheetName * @return 根据sheet名称获取sheet */ public Sheet getSheet(String sheetName){ Sheet sheet = wb.getSheet(sheetName); return sheet; } /** * 构造函数 * @param title 表格标题，传“空值”，表示无标题 * @param cls 实体对象，通过annotation.ExportField获取标题 */ public ExportExcel(String title, Class<?> cls){ this("", title, cls, 1,0); } public ExportExcel(String title, Class<?> cls, int type){ this("",title,cls,type,0); } public ExportExcel(String[] sheetnames,String[] titles, List<Class<?>> cls){ this("",titles[0],cls.get(0),1,0); } /** * 构造函数 导出单个sheet,带筛选条件 * @author QianHW * @date 2018年7月19日 下午7:03:48 * @param title * @param cls 实体对象，通过annotation.ExportField获取标题 * @param conMap 筛选条件 */ public ExportExcel(String title, Class<?> cls,Map<String, Object> conMap){ this("",title,cls,conMap,1); } // /** // * @author QianHW // * @date 2018年10月18日 // * @param title // * @param cls // * @param conMap // * @param dataList // */ // public ExportExcel(String title,Class<?> cls,Map<String, Object> conMap,Map<String, List<?>> dataList){ // // } /** * 构造函数 * @param title 表格标题，传“空值”，表示无标题 * @param cls 实体对象，通过annotation.ExportField获取标题 */ public ExportExcel(String sheetname, String title, Class<?> cls){ this(sheetname, title, cls, 1,0); } /** * 构造函数 导出单个sheet,带筛选条件 * @author QianHW * @date 2018年7月19日 下午7:03:48 * @param title 表格标题，传“空值”，表示无标题 * @param cls 实体对象，通过annotation.ExportField获取标题 * @param conMap 筛选条件 * @param type 导出类型（1:导出数据；2：导出模板） * @param groups 导入分组 */ public ExportExcel(String sheetname, String title, Class<?> cls,Map<String, Object> conMap, int type, int... groups){ // Get annotation field Field[] fs = cls.getDeclaredFields(); for (Field f : fs){ ExcelField ef = f.getAnnotation(ExcelField.class); if (ef != null && (ef.type()==0 || ef.type()==type)){ if (groups!=null && groups.length>0){ boolean inGroup = false; for (int g : groups){ if (inGroup){ break; } for (int efg : ef.groups()){ if (g == efg){ inGroup = true; annotationList.add(new Object[]{ef, f}); break; } } } }else{ annotationList.add(new Object[]{ef, f}); } } } // Get annotation method Method[] ms = cls.getDeclaredMethods(); for (Method m : ms){ ExcelField ef = m.getAnnotation(ExcelField.class); if (ef != null && (ef.type()==0 || ef.type()==type)){ if (groups!=null && groups.length>0){ boolean inGroup = false; for (int g : groups){ if (inGroup){ break; } for (int efg : ef.groups()){ if (g == efg){ inGroup = true; annotationList.add(new Object[]{ef, m}); break; } } } }else{ annotationList.add(new Object[]{ef, m}); } } } // Field sorting Collections.sort(annotationList, new Comparator<Object[]>() { public int compare(Object[] o1, Object[] o2) { return new Integer(((ExcelField)o1[0]).sort()).compareTo( new Integer(((ExcelField)o2[0]).sort())); }; }); // Initialize List<String> headerList = Lists.newArrayList(); for (Object[] os : annotationList){ String t = ((ExcelField)os[0]).title(); // 如果是导出，则去掉注释 if (type==1){ String[] ss = StringUtils.split(t, "**", 2); if (ss.length==2){ t = ss[0]; } } headerList.add(t); } initialize(sheetname, title, headerList,conMap); } /** * 构造函数 导出单个sheet * @param title 表格标题，传“空值”，表示无标题 * @param cls 实体对象，通过annotation.ExportField获取标题 * @param type 导出类型（1:导出数据；2：导出模板） * @param groups 导入分组 * @param sht 第几个工作 sheet */ public ExportExcel(String sheetname, String title, Class<?> cls, int type,int sht, int... groups){ // Get annotation field Field[] fs = cls.getDeclaredFields(); for (Field f : fs){ ExcelField ef = f.getAnnotation(ExcelField.class); if (ef != null && (ef.type()==0 || ef.type()==type)){ if (groups!=null && groups.length>0){ boolean inGroup = false; for (int g : groups){ if (inGroup){ break; } for (int efg : ef.groups()){ if (g == efg){ inGroup = true; annotationList.add(new Object[]{ef, f}); break; } } } }else{ annotationList.add(new Object[]{ef, f}); } } } // Get annotation method Method[] ms = cls.getDeclaredMethods(); for (Method m : ms){ ExcelField ef = m.getAnnotation(ExcelField.class); if (ef != null && (ef.type()==0 || ef.type()==type)){ if (groups!=null && groups.length>0){ boolean inGroup = false; for (int g : groups){ if (inGroup){ break; } for (int efg : ef.groups()){ if (g == efg){ inGroup = true; annotationList.add(new Object[]{ef, m}); break; } } } }else{ annotationList.add(new Object[]{ef, m}); } } } // Field sorting Collections.sort(annotationList, new Comparator<Object[]>() { public int compare(Object[] o1, Object[] o2) { return new Integer(((ExcelField)o1[0]).sort()).compareTo( new Integer(((ExcelField)o2[0]).sort())); }; }); // Initialize List<String> headerList = Lists.newArrayList(); for (Object[] os : annotationList){ String t = ((ExcelField)os[0]).title(); // 如果是导出，则去掉注释 if (type==1){ String[] ss = StringUtils.split(t, "**", 2); if (ss.length==2){ t = ss[0]; } } headerList.add(t); } initialize(sheetname, title, headerList,sht); } /** * 构造函数 * @param title 表格标题，传“空值”，表示无标题 * @param headers 表头数组 */ public ExportExcel(String sheetname,String title, String[] headers) { initialize(sheetname, title, Lists.newArrayList(headers),0); } /** * 构造函数 * @param title 表格标题，传“空值”，表示无标题 * @param headerList 表头列表 */ public ExportExcel(String sheetname, String title, List<String> headerList) { initialize(sheetname,title, headerList,0); } /** * 初始化函数 导出单个sheet,带筛选条件 * @author QianHW * @date 2018年7月19日 下午7:03:48 * @param sheet 工作表名称 * @param title 表格标题，传“空值”，表示无标题 * @param headerList 表头列表 * @param conMap 筛选条件 */ private void initialize(String sheetname, String title, List<String> headerList,Map<String, Object> conMap) { this.wb = new SXSSFWorkbook(500); this.sheet = wb.createSheet(StringUtils.isBlank(sheetname)?"Export":sheetname); this.styles = createStyles(wb); // Create title if (StringUtils.isNotBlank(title)){ Row titleRow = sheet.createRow(rownum++); titleRow.setHeightInPoints(30); Cell titleCell = titleRow.createCell(0); titleCell.setCellStyle(styles.get("title")); titleCell.setCellValue(title); sheet.addMergedRegion(new CellRangeAddress(titleRow.getRowNum(), titleRow.getRowNum(), titleRow.getRowNum(), headerList.size()-1)); } // Create ScreeCondition if(conMap.size() != 0){ String condiStr = ""; for(String key : conMap.keySet()){ condiStr += key + ":" + conMap.get(key).toString() + "; "; } condiStr = condiStr + "导出时间"+ ":" + DateUtils.getDate(); Row conditionRow = sheet.createRow(rownum++); conditionRow.setHeightInPoints(16); Cell condiCell = conditionRow.createCell(0); condiCell.setCellStyle(styles.get("condition")); condiCell.setCellValue(condiStr); sheet.addMergedRegion(new CellRangeAddress(conditionRow.getRowNum(), conditionRow.getRowNum(), conditionRow.getRowNum()-1, headerList.size()-1)); } // Create header if (headerList == null){ throw new RuntimeException("headerList not null!"); } Row headerRow = sheet.createRow(rownum++); headerRow.setHeightInPoints(16); for (int i = 0; i < headerList.size(); i++) { Cell cell = headerRow.createCell(i); cell.setCellStyle(styles.get("header")); String[] ss = StringUtils.split(headerList.get(i), "**", 2); if (ss.length==2){ cell.setCellValue(ss[0]); Comment comment = this.sheet.createDrawingPatriarch().createCellComment( new XSSFClientAnchor(0, 0, 0, 0, (short) 3, 3, (short) 5, 6)); comment.setString(new XSSFRichTextString(ss[1])); cell.setCellComment(comment); }else{ cell.setCellValue(headerList.get(i)); } sheet.autoSizeColumn(i); } for (int i = 0; i < headerList.size(); i++) { int colWidth = sheet.getColumnWidth(i)*2; sheet.setColumnWidth(i, colWidth < 3000 ? 3000 : colWidth); } log.debug("Initialize success."); } /** * 初始化函数 导出单个sheet * @param sheet 工作表名称 * @param title 表格标题，传“空值”，表示无标题 * @param headerList 表头列表 * @param sht 第几个工作 sheet */ private void initialize(String sheetname, String title, List<String> headerList,int sht) { this.wb = new SXSSFWorkbook(500); this.sheet = wb.createSheet(); this.wb.setSheetName(sht,StringUtils.isBlank(sheetname)?"Export":sheetname); this.styles = createStyles(wb); // Create title if (StringUtils.isNotBlank(title)){ Row titleRow = sheet.createRow(rownum++); titleRow.setHeightInPoints(30); Cell titleCell = titleRow.createCell(0); titleCell.setCellStyle(styles.get("title")); titleCell.setCellValue(title); sheet.addMergedRegion(new CellRangeAddress(titleRow.getRowNum(), titleRow.getRowNum(), titleRow.getRowNum(), headerList.size()-1)); } // Create header if (headerList == null){ throw new RuntimeException("headerList not null!"); } Row headerRow = sheet.createRow(rownum++); headerRow.setHeightInPoints(16); for (int i = 0; i < headerList.size(); i++) { Cell cell = headerRow.createCell(i); cell.setCellStyle(styles.get("header")); String[] ss = StringUtils.split(headerList.get(i), "**", 2); if (ss.length==2){ cell.setCellValue(ss[0]); Comment comment = this.sheet.createDrawingPatriarch().createCellComment( new XSSFClientAnchor(0, 0, 0, 0, (short) 3, 3, (short) 5, 6)); comment.setString(new XSSFRichTextString(ss[1])); cell.setCellComment(comment); }else{ cell.setCellValue(headerList.get(i)); } sheet.autoSizeColumn(i); } for (int i = 0; i < headerList.size(); i++) { int colWidth = sheet.getColumnWidth(i)*2; sheet.setColumnWidth(i, colWidth < 3000 ? 3000 : colWidth); } log.debug("Initialize success."); } /** * 创建表格样式 * @param wb 工作薄对象 * @return 样式列表 */ private Map<String, CellStyle> createStyles(Workbook wb) { Map<String, CellStyle> styles = new HashMap<String, CellStyle>(); CellStyle style = wb.createCellStyle(); CellStyle style2 = wb.createCellStyle(); style.setAlignment(CellStyle.ALIGN_CENTER); style.setVerticalAlignment(CellStyle.VERTICAL_CENTER); Font titleFont = wb.createFont(); titleFont.setFontName("Arial"); titleFont.setFontHeightInPoints((short) 16); titleFont.setBoldweight(Font.BOLDWEIGHT_BOLD); style.setFont(titleFont); styles.put("title", style); style2.setAlignment(CellStyle.ALIGN_LEFT); style2.setVerticalAlignment(CellStyle.VERTICAL_CENTER); Font condiFont = wb.createFont(); condiFont.setFontName("Arial"); condiFont.setFontHeightInPoints((short) 10); // condiFont.setBoldweight(Font.BOLDWEIGHT_BOLD); style2.setFont(condiFont); styles.put("condition", style2); style = wb.createCellStyle(); style.setVerticalAlignment(CellStyle.VERTICAL_CENTER); style.setBorderRight(CellStyle.BORDER_THIN); style.setRightBorderColor(IndexedColors.GREY_50_PERCENT.getIndex()); style.setBorderLeft(CellStyle.BORDER_THIN); style.setLeftBorderColor(IndexedColors.GREY_50_PERCENT.getIndex()); style.setBorderTop(CellStyle.BORDER_THIN); style.setTopBorderColor(IndexedColors.GREY_50_PERCENT.getIndex()); style.setBorderBottom(CellStyle.BORDER_THIN); style.setBottomBorderColor(IndexedColors.GREY_50_PERCENT.getIndex()); Font dataFont = wb.createFont(); dataFont.setFontName("Arial"); dataFont.setFontHeightInPoints((short) 10); style.setFont(dataFont); styles.put("data", style); style = wb.createCellStyle(); style.cloneStyleFrom(styles.get("data")); style.setAlignment(CellStyle.ALIGN_LEFT); styles.put("data1", style); style = wb.createCellStyle(); style.cloneStyleFrom(styles.get("data")); style.setAlignment(CellStyle.ALIGN_CENTER); styles.put("data2", style); style = wb.createCellStyle(); style.cloneStyleFrom(styles.get("data")); style.setAlignment(CellStyle.ALIGN_RIGHT); styles.put("data3", style); style = wb.createCellStyle(); style.cloneStyleFrom(styles.get("data")); // style.setWrapText(true); style.setAlignment(CellStyle.ALIGN_CENTER); style.setFillForegroundColor(IndexedColors.GREY_50_PERCENT.getIndex()); style.setFillPattern(CellStyle.SOLID_FOREGROUND); Font headerFont = wb.createFont(); headerFont.setFontName("Arial"); headerFont.setFontHeightInPoints((short) 10); headerFont.setBoldweight(Font.BOLDWEIGHT_BOLD); headerFont.setColor(IndexedColors.WHITE.getIndex()); style.setFont(headerFont); styles.put("header", style); return styles; } /** * 添加一行 * @return 行对象 */ public Row addRow(){ return sheet.createRow(rownum++); } /** * 添加一个单元格 * @param row 添加的行 * @param column 添加列号 * @param val 添加值 * @return 单元格对象 */ public Cell addCell(Row row, int column, Object val){ return this.addCell(row, column, val, 0, Class.class); } /** * 添加一个单元格 * @param row 添加的行 * @param column 添加列号 * @param val 添加值 * @param align 对齐方式（1：靠左；2：居中；3：靠右） * @return 单元格对象 */ public Cell addCell(Row row, int column, Object val, int align, Class<?> fieldType){ Cell cell = row.createCell(column); CellStyle style = styles.get("data"+(align>=1&&align<=3?align:"")); try { if (val == null){ cell.setCellValue(""); } else if (val instanceof String) { //地址信息 /*if (val.toString().split("\s").length > 1){ cell.setCellValue(ChildBaseinfoService.updateAddr(val.toString())); }else{*/ cell.setCellValue((String) val); /*}*/ } else if (val instanceof Integer) { cell.setCellValue((Integer) val); } else if (val instanceof Long) { cell.setCellValue((Long) val); } else if (val instanceof Double) { cell.setCellValue((Double) val); } else if (val instanceof Float) { cell.setCellValue((Float) val); } else if (val instanceof Date) { /*DataFormat format = wb.createDataFormat(); style.setDataFormat(format.getFormat("yyyy-MM-dd")); cell.setCellValue((Date) val);*/ SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); cell.setCellValue(sdf.format(val)); }else { if (fieldType != Class.class){ cell.setCellValue((String)fieldType.getMethod("setValue", Object.class).invoke(null, val)); }else{ cell.setCellValue((String)Class.forName(this.getClass().getName().replaceAll(this.getClass().getSimpleName(), "fieldtype."+val.getClass().getSimpleName()+"Type")).getMethod("setValue", Object.class).invoke(null, val)); } } } catch (Exception ex) { log.info("Set cell value ["+row.getRowNum()+","+column+"] error: " + ex.toString()); cell.setCellValue(val.toString()); } cell.setCellStyle(style); return cell; } /** * 添加数据（通过annotation.ExportField添加数据） * @return list 数据列表 */ public <E> ExportExcel setDataList(List<E> list){ for (E e : list){ int colunm = 0; Row row = this.addRow(); StringBuilder sb = new StringBuilder(); for (Object[] os : annotationList){ ExcelField ef = (ExcelField)os[0]; Object val = null; // Get entity value try{ if (StringUtils.isNotBlank(ef.value())){ val = Reflections.invokeGetter(e, ef.value()); }else{ if (os[1] instanceof Field){ val = Reflections.invokeGetter(e, ((Field)os[1]).getName()); }else if (os[1] instanceof Method){ val = Reflections.invokeMethod(e, ((Method)os[1]).getName(), new Class[] {}, new Object[] {}); } } // If is dict, get dict label if (StringUtils.isNotBlank(ef.dictType())){ val = DictUtils.getDictLabel(val==null?"":val.toString(), ef.dictType(), ""); } }catch(Exception ex) { // Failure to ignore log.info(ex.toString()); val = ""; } this.addCell(row, colunm++, val, ef.align(), ef.fieldType()); sb.append(val + ", "); } log.debug("Write success: ["+row.getRowNum()+"] "+sb.toString()); } return this; } /** * 输出数据流 * @param os 输出数据流 */ public ExportExcel write(OutputStream os) throws IOException{ wb.write(os); return this; } /** * 输出到客户端 * @param fileName 输出文件名 */ public ExportExcel write(HttpServletResponse response, String fileName) throws IOException{ response.reset(); Cookie status = new Cookie("expupdateStatus","success"); status.setPath("/vaccinate"); status.setMaxAge(10); response.addCookie(status); response.setContentType("application/octet-stream; charset=utf-8"); response.setHeader("Content-Disposition", "attachment; filename="+Encodes.urlEncode(fileName)); write(response.getOutputStream()); return this; } /** * 输出到文件 * @param fileName 输出文件名 */ public ExportExcel writeFile(String name) throws FileNotFoundException, IOException{ FileOutputStream os = new FileOutputStream(name); this.write(os); return this; } /** * 清理临时文件 */ public ExportExcel dispose(){ wb.dispose(); return this; } // /** // * 导出测试 // */ // public static void main(String[] args) throws Throwable { // // List<String> headerList = Lists.newArrayList(); // for (int i = 1; i <= 10; i++) { // headerList.add("表头"+i); // } // // List<String> dataRowList = Lists.newArrayList(); // for (int i = 1; i <= headerList.size(); i++) { // dataRowList.add("数据"+i); // } // // List<List<String>> dataList = Lists.newArrayList(); // for (int i = 1; i <=1000000; i++) { // dataList.add(dataRowList); // } // // ExportExcel ee = new ExportExcel("表格标题", headerList); // // for (int i = 0; i < dataList.size(); i++) { // Row row = ee.addRow(); // for (int j = 0; j < dataList.get(i).size(); j++) { // ee.addCell(row, j, dataList.get(i).get(j)); // } // } // // ee.writeFile("target/export.xlsx"); // // ee.dispose(); // // log.debug("Export success."); // // } }
2.工具类ImportExcel.java
/** * Copyright © 2012-2014 <a href="https://github.com/thinkgem/jeesite">JeeSite</a> All rights reserved. */ package com.thinkgem.jeesite.common.utils.excel; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.lang.reflect.Field; import java.lang.reflect.Method; import java.text.SimpleDateFormat; import java.util.Collections; import java.util.Comparator; import java.util.Date; import java.util.List; import org.apache.commons.lang3.StringUtils; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.openxml4j.exceptions.InvalidFormatException; import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.ss.usermodel.DateUtil; import org.apache.poi.ss.usermodel.Row; import org.apache.poi.ss.usermodel.Sheet; import org.apache.poi.ss.usermodel.Workbook; import org.apache.poi.xssf.usermodel.XSSFWorkbook; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.web.multipart.MultipartFile; import com.google.common.collect.Lists; import com.thinkgem.jeesite.common.utils.Reflections; import com.thinkgem.jeesite.common.utils.excel.annotation.ExcelField; import com.thinkgem.jeesite.modules.sys.utils.DictUtils; /** * 导入Excel文件（支持“XLS”和“XLSX”格式） * @author ThinkGem * @version 2013-03-10 */ public class ImportExcel { private static Logger log = LoggerFactory.getLogger(ImportExcel.class); /** * 工作薄对象 */ private Workbook wb; /** * 工作表对象 */ private Sheet sheet; /** * 标题行号 */ private int headerNum; /** * 构造函数 * @param path 导入文件，读取第一个工作表 * @param headerNum 标题行号，数据行号=标题行号+1 * @throws InvalidFormatException * @throws IOException */ public ImportExcel(String fileName, int headerNum) throws InvalidFormatException, IOException { this(new File(fileName), headerNum); } /** * 构造函数 * @param path 导入文件对象，读取第一个工作表 * @param headerNum 标题行号，数据行号=标题行号+1 * @throws InvalidFormatException * @throws IOException */ public ImportExcel(File file, int headerNum) throws InvalidFormatException, IOException { this(file, headerNum, 0); } /** * 构造函数 * @param path 导入文件 * @param headerNum 标题行号，数据行号=标题行号+1 * @param sheetIndex 工作表编号 * @throws InvalidFormatException * @throws IOException */ public ImportExcel(String fileName, int headerNum, int sheetIndex) throws InvalidFormatException, IOException { this(new File(fileName), headerNum, sheetIndex); } /** * 构造函数 * @param path 导入文件对象 * @param headerNum 标题行号，数据行号=标题行号+1 * @param sheetIndex 工作表编号 * @throws InvalidFormatException * @throws IOException */ public ImportExcel(File file, int headerNum, int sheetIndex) throws InvalidFormatException, IOException { this(file.getName(), new FileInputStream(file), headerNum, sheetIndex); } /** * 构造函数 * @param file 导入文件对象 * @param headerNum 标题行号，数据行号=标题行号+1 * @param sheetIndex 工作表编号 * @throws InvalidFormatException * @throws IOException */ public ImportExcel(MultipartFile multipartFile, int headerNum, int sheetIndex) throws InvalidFormatException, IOException { this(multipartFile.getOriginalFilename(), multipartFile.getInputStream(), headerNum, sheetIndex); } /** * 构造函数 * @param path 导入文件对象 * @param headerNum 标题行号，数据行号=标题行号+1 * @param sheetIndex 工作表编号 * @throws InvalidFormatException * @throws IOException */ public ImportExcel(String fileName, InputStream is, int headerNum, int sheetIndex) throws InvalidFormatException, IOException { if (StringUtils.isBlank(fileName)){ throw new RuntimeException("导入文档为空!"); }else if(fileName.toLowerCase().endsWith("xls")){ this.wb = new HSSFWorkbook(is); }else if(fileName.toLowerCase().endsWith("xlsx")){ this.wb = new XSSFWorkbook(is); }else{ throw new RuntimeException("文档格式不正确!"); } if (this.wb.getNumberOfSheets()<sheetIndex){ throw new RuntimeException("文档中没有工作表!"); } this.sheet = this.wb.getSheetAt(sheetIndex); this.headerNum = headerNum; log.debug("Initialize success."); } /** * 获取行对象 * @param rownum * @return */ public Row getRow(int rownum){ return this.sheet.getRow(rownum); } /** * 获取数据行号 * @return */ public int getDataRowNum(){ return headerNum+1; } /** * 获取最后一个数据行号 * @return */ public int getLastDataRowNum(){ return this.sheet.getLastRowNum()+headerNum; } /** * 获取最后一个列号 * @return */ public int getLastCellNum(){ return this.getRow(headerNum).getLastCellNum(); } /** * 获取单元格值 * @param row 获取的行 * @param column 获取单元格列号 * @return 单元格值 */ public Object getCellValue(Row row, int column){ Object val = ""; try{ Cell cell = row.getCell(column); if (cell != null){ if (cell.getCellType() == Cell.CELL_TYPE_NUMERIC){ val = cell.getNumericCellValue(); //处理自定义日期格式 // SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); // double value = cell.getNumericCellValue(); // Date date = org.apache.poi.ss.usermodel.DateUtil // .getJavaDate(value); // val = sdf.format(date); }else if (cell.getCellType() == Cell.CELL_TYPE_STRING){ val = cell.getStringCellValue(); if(val != null && val instanceof String){ val = ((String)val).trim(); } }else if (cell.getCellType() == Cell.CELL_TYPE_FORMULA){ val = cell.getCellFormula(); }else if (cell.getCellType() == Cell.CELL_TYPE_BOOLEAN){ val = cell.getBooleanCellValue(); }else if (cell.getCellType() == Cell.CELL_TYPE_ERROR){ val = cell.getErrorCellValue(); } } }catch (Exception e) { return val; } return val; } /** * 获取导入数据列表 * @param cls 导入对象类型 * @param groups 导入分组 */ public <E> List<E> getDataList(Class<E> cls, int... groups) throws InstantiationException, IllegalAccessException{ List<Object[]> annotationList = Lists.newArrayList(); // Get annotation field Field[] fs = cls.getDeclaredFields(); for (Field f : fs){ ExcelField ef = f.getAnnotation(ExcelField.class); if (ef != null && (ef.type()==0 || ef.type()==2)){ if (groups!=null && groups.length>0){ boolean inGroup = false; for (int g : groups){ if (inGroup){ break; } for (int efg : ef.groups()){ if (g == efg){ inGroup = true; annotationList.add(new Object[]{ef, f}); break; } } } }else{ annotationList.add(new Object[]{ef, f}); } } } // Get annotation method Method[] ms = cls.getDeclaredMethods(); for (Method m : ms){ ExcelField ef = m.getAnnotation(ExcelField.class); if (ef != null && (ef.type()==0 || ef.type()==2)){ if (groups!=null && groups.length>0){ boolean inGroup = false; for (int g : groups){ if (inGroup){ break; } for (int efg : ef.groups()){ if (g == efg){ inGroup = true; annotationList.add(new Object[]{ef, m}); break; } } } }else{ annotationList.add(new Object[]{ef, m}); } } } // Field sorting Collections.sort(annotationList, new Comparator<Object[]>() { public int compare(Object[] o1, Object[] o2) { return new Integer(((ExcelField)o1[0]).sort()).compareTo( new Integer(((ExcelField)o2[0]).sort())); }; }); //log.debug("Import column count:"+annotationList.size()); // Get excel data List<E> dataList = Lists.newArrayList(); for (int i = this.getDataRowNum(); i < this.getLastDataRowNum(); i++) { E e = (E)cls.newInstance(); int column = 0; Row row = this.getRow(i); StringBuilder sb = new StringBuilder(); for (Object[] os : annotationList){ Object val = this.getCellValue(row, column++); if (val != null){ ExcelField ef = (ExcelField)os[0]; // If is dict type, get dict value if (StringUtils.isNotBlank(ef.dictType())){ val = DictUtils.getDictValue(val.toString(), ef.dictType(), ""); //log.debug("Dictionary type value: ["+i+","+colunm+"] " + val); } // Get param type and type cast Class<?> valType = Class.class; if (os[1] instanceof Field){ valType = ((Field)os[1]).getType(); }else if (os[1] instanceof Method){ Method method = ((Method)os[1]); if ("get".equals(method.getName().substring(0, 3))){ valType = method.getReturnType(); }else if("set".equals(method.getName().substring(0, 3))){ valType = ((Method)os[1]).getParameterTypes()[0]; } } //log.debug("Import value type: ["+i+","+column+"] " + valType); try { if (valType == String.class){ String s = String.valueOf(val.toString()); if(StringUtils.endsWith(s, ".0")){ val = StringUtils.substringBefore(s, ".0"); }else{ val = String.valueOf(val.toString()); } }else if (valType == Integer.class){ val = Double.valueOf(val.toString()).intValue(); }else if (valType == Long.class){ val = Double.valueOf(val.toString()).longValue(); }else if (valType == Double.class){ val = Double.valueOf(val.toString()); }else if (valType == Float.class){ val = Float.valueOf(val.toString()); }else if (valType == Date.class){ val = DateUtil.getJavaDate((Double)val); }else{ if (ef.fieldType() != Class.class){ val = ef.fieldType().getMethod("getValue", String.class).invoke(null, val.toString()); }else{ val = Class.forName(this.getClass().getName().replaceAll(this.getClass().getSimpleName(), "fieldtype."+valType.getSimpleName()+"Type")).getMethod("getValue", String.class).invoke(null, val.toString()); } } } catch (Exception ex) { log.info("Get cell value ["+i+","+column+"] error: " + ex.toString()); val = null; } // set entity value if (os[1] instanceof Field){ Reflections.invokeSetter(e, ((Field)os[1]).getName(), val); }else if (os[1] instanceof Method){ String mthodName = ((Method)os[1]).getName(); if ("get".equals(mthodName.substring(0, 3))){ mthodName = "set"+StringUtils.substringAfter(mthodName, "get"); } Reflections.invokeMethod(e, mthodName, new Class[] {valType}, new Object[] {val}); } } sb.append(val+", "); } dataList.add(e); log.debug("Read success: ["+i+"] "+sb.toString()); } return dataList; } // /** // * 导入测试 // */ // public static void main(String[] args) throws Throwable { // // ImportExcel ei = new ImportExcel("target/export.xlsx", 1); // // for (int i = ei.getDataRowNum(); i < ei.getLastDataRowNum(); i++) { // Row row = ei.getRow(i); // for (int j = 0; j < ei.getLastCellNum(); j++) { // Object val = ei.getCellValue(row, j); // System.out.print(val+", "); // } // System.out.print(" "); // } // // } }
3.实体类注解
@ExcelField(align = 2, title = "接种单位名称", sort = 140)
