闲话 少说 直接 上 代码
springMVC项目
JSP页面代码如下
</shiro:hasPermission> <shiro:hasPermission name="echarts:memPutInto:import"> <table:importExcel url="${ctx}/echarts/memPutInto/import"></table:importExcel><!-- 导入按钮 --> </shiro:hasPermission> <shiro:hasPermission name="echarts:memPutInto:export"> <table:exportExcel url="${ctx}/echarts/memPutInto/export"></table:exportExcel><!-- 导出按钮 --> </shiro:hasPermission> JSP页面 引用的table标签importExcel.tag
<%@ tag language="java" pageEncoding="UTF-8"%> <%@ include file="/webpage/include/taglib.jsp"%> <%@ attribute name="url" type="java.lang.String" required="true"%> <%-- 使用方法： 1.将本tag写在查询的form之前；2.传入controller的url --%> <button id="btnImport" class="btn btn-white btn-sm " data-toggle="tooltip" data-placement="left" title="导入"><i class="fa fa-folder-open-o"></i> 导入</button> <div id="importBox" class="hide"> <form id="importForm" action="${url}" method="post" enctype="multipart/form-data" style="padding-left:20px;text-align:center;" οnsubmit="loading('正在导入，请稍等...');"><br/> <input id="uploadFile" name="file" type="file" style="width:330px"/>导入文件不能超过5M，仅允许导入“xls”或“xlsx”格式文件！<br/> </form> </div> <script type="text/javascript"> $(document).ready(function() { $("#btnImport").click(function(){ top.layer.open({ type: 1, area: [500, 300], title:"导入数据", content:$("#importBox").html() , btn: ['下载模板','确定', '关闭'], btn1: function(index, layero){ window.location.href='${url}/template'; }, btn2: function(index, layero){ var inputForm =top.$("#importForm"); var top_iframe = top.getActiveTab().attr("name");//获取当前active的tab的iframe inputForm.attr("target",top_iframe);//表单提交成功后，从服务器返回的url在当前tab中展示 top.$("#importForm").submit(); top.layer.close(index); }, btn3: function(index){ top.layer.close(index); } }); }); }); </script>exportExcel.tag
<%@ tag language="java" pageEncoding="UTF-8"%> <%@ include file="/webpage/include/taglib.jsp"%> <%@ attribute name="url" type="java.lang.String" required="true"%> <%-- 使用方法： 1.将本tag写在查询的form之前；2.传入url --%> <button id="btnExport" class="btn btn-white btn-sm " data-toggle="tooltip" data-placement="left" title="导出"><i class="fa fa-file-excel-o"></i> 导出</button> <script type="text/javascript"> $(document).ready(function() { $("#btnExport").click(function(){ top.layer.confirm('确认要导出Excel吗?', {icon: 3, title:'系统提示'}, function(index){ //do something //导出之前备份 var url = $("#searchForm").attr("action"); var pageNo = $("#pageNo").val(); var pageSize = $("#pageSize").val(); //导出excel $("#searchForm").attr("action","${url}"); $("#pageNo").val(-1); $("#pageSize").val(-1); $("#searchForm").submit(); //导出excel之后还原 $("#searchForm").attr("action",url); $("#pageNo").val(pageNo); $("#pageSize").val(pageSize); top.layer.close(index); }); }); }); </script>实现 导入导入 Excel功能的Controller
@Controller @RequestMapping(value = "${adminPath}/echarts/memPutInto")
/** * 导出excel文件 */ @RequiresPermissions("echarts:memPutInto:export") @RequestMapping(value = "export", method=RequestMethod.POST) public String exportFile(MemPutInto memPutInto, HttpServletRequest request, HttpServletResponse response, RedirectAttributes redirectAttributes) { try { String fileName = "员工投入状况"+DateUtils.getDate("yyyyMMddHHmmss")+".xlsx"; Page<MemPutInto> page = memPutIntoService.findPage(new Page<MemPutInto>(request, response, -1), memPutInto); new ExportExcel("员工投入状况", MemPutInto.class).setDataList(page.getList()).write(response, fileName).dispose(); return null; } catch (Exception e) { addMessage(redirectAttributes, "导出员工投入状况记录失败！失败信息："+e.getMessage()); } return "redirect:"+Global.getAdminPath()+"/echarts/memPutInto/?repage"; } /** * 导入Excel数据 */ @RequiresPermissions("echarts:memPutInto:import") @RequestMapping(value = "import", method=RequestMethod.POST) public String importFile(MultipartFile file, RedirectAttributes redirectAttributes) { try { int successNum = 0; int failureNum = 0; StringBuilder failureMsg = new StringBuilder(); ImportExcel ei = new ImportExcel(file, 1, 0); List<MemPutInto> list = ei.getDataList(MemPutInto.class); for (MemPutInto memPutInto : list){ try{ memPutIntoService.save(memPutInto); successNum++; }catch(ConstraintViolationException ex){ failureNum++; }catch (Exception ex) { failureNum++; } } if (failureNum>0){ failureMsg.insert(0, "，失败 "+failureNum+" 条员工投入状况记录。"); } addMessage(redirectAttributes, "已成功导入 "+successNum+" 条员工投入状况记录"+failureMsg); } catch (Exception e) { addMessage(redirectAttributes, "导入员工投入状况失败！失败信息："+e.getMessage()); } return "redirect:"+Global.getAdminPath()+"/echarts/memPutInto/?repage"; } /** * 下载导入员工投入状况数据模板 */ @RequiresPermissions("echarts:memPutInto:import") @RequestMapping(value = "import/template") public String importFileTemplate(HttpServletResponse response, RedirectAttributes redirectAttributes) { try { String fileName = "员工投入状况数据导入模板.xlsx"; List<MemPutInto> list = Lists.newArrayList(); new ExportExcel("员工投入状况数据", MemPutInto.class, 1).setDataList(list).write(response, fileName).dispose(); return null; } catch (Exception e) { addMessage(redirectAttributes, "导入模板下载失败！失败信息："+e.getMessage()); } return "redirect:"+Global.getAdminPath()+"/echarts/memPutInto/?repage"; } Controller调用的工具类ImportExcel.java
/** * Copyright © 2015-2020 <a href="http://www.jeeplus.org/">JeePlus</a> All rights reserved. */ package com.jeeplus.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.NumberFormat; 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.HSSFDateUtil; 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.jeeplus.common.utils.Reflections; import com.jeeplus.common.utils.excel.annotation.ExcelField; import com.jeeplus.modules.sys.entity.Area; import com.jeeplus.modules.sys.entity.Office; import com.jeeplus.modules.sys.entity.User; import com.jeeplus.modules.sys.utils.DictUtils; import com.jeeplus.modules.sys.utils.UserUtils; /** * 导入Excel文件（支持“XLS”和“XLSX”格式） * @author jeeplus * @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(); // 当excel 中的数据为数值或日期是需要特殊处理 if (HSSFDateUtil.isCellDateFormatted(cell)) { double d = cell.getNumericCellValue(); Date date = HSSFDateUtil.getJavaDate(d); SimpleDateFormat dformat = new SimpleDateFormat( "yyyy-MM-dd"); val = dformat.format(date); } else { NumberFormat nf = NumberFormat.getInstance(); nf.setGroupingUsed(false);// true时的格式：1,234,567,890 val = nf.format(cell.getNumericCellValue());// 数值类型的数据为double，所以需要转换一下 } } else if (cell.getCellType() == Cell.CELL_TYPE_STRING) { val = cell.getStringCellValue(); } 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 { //如果导入的java对象，需要在这里自己进行变换。 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){ SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd"); val=sdf.parse(val.toString()); }else if (valType == User.class){ val = UserUtils.getByUserName(val.toString()); }else if (valType == Office.class){ val = UserUtils.getByOfficeName(val.toString()); }else if (valType == Area.class){ val = UserUtils.getByAreaName(val.toString()); }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("\n"); // } // // } } 工具类ExportExcel.java
/** * Copyright © 2015-2020 <a href="http://www.jeeplus.org/">JeePlus</a> All rights reserved. */ package com.jeeplus.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.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.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.DataFormat; 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.jeeplus.common.utils.Encodes; import com.jeeplus.common.utils.Reflections; import com.jeeplus.common.utils.excel.annotation.ExcelField; import com.jeeplus.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 jeeplus * @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(); /** * 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); } /** * 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 * @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 title, Class<?> cls, 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(title, headerList); } /** * 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 title, String[] headers) { initialize(title, Lists.newArrayList(headers)); } /** * 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 title, List<String> headerList) { initialize(title, headerList); } /** * 初始化函数 * @param title 表格标题，传“空值”，表示无标题 * @param headerList 表头列表 */ private void initialize(String title, List<String> headerList) { this.wb = new SXSSFWorkbook(500); this.sheet = wb.createSheet("Export"); 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(); 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); 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 || val instanceof Integer || val instanceof Long || val instanceof Short || val instanceof Double || val instanceof Float) { cell.setCellValue(val.toString()); } else if (val instanceof Date) { DataFormat format = wb.createDataFormat(); style.setDataFormat(format.getFormat("yyyy-MM-dd")); cell.setCellValue((Date) 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(); 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."); // // } } 工具类定义注解
ExcelField.java
/** * Copyright © 2015-2020 <a href="http://www.jeeplus.org/">JeePlus</a> All rights reserved. */ package com.jeeplus.common.utils.excel.annotation; import java.lang.annotation.ElementType; import java.lang.annotation.Retention; import java.lang.annotation.RetentionPolicy; import java.lang.annotation.Target; /** * Excel注解定义 * @author jeeplus * @version 2013-03-10 */ @Target({ElementType.METHOD, ElementType.FIELD, ElementType.TYPE}) @Retention(RetentionPolicy.RUNTIME) public @interface ExcelField { /** * 导出字段名（默认调用当前字段的“get”方法，如指定导出字段为对象，请填写“对象名.对象属性”，例：“area.name”、“office.name”） */ String value() default ""; /** * 导出字段标题（需要添加批注请用“**”分隔，标题**批注，仅对导出模板有效） */ String title(); /** * 字段类型（0：导出导入；1：仅导出；2：仅导入） */ int type() default 0; /** * 导出字段对齐方式（0：自动；1：靠左；2：居中；3：靠右） */ int align() default 0; /** * 导出字段字段排序（升序） */ int sort() default 0; /** * 如果是字典类型，请设置字典的type值 */ String dictType() default ""; /** * 反射类型 */ Class<?> fieldType() default Class.class; /** * 字段归属组（根据分组导出导入） */ int[] groups() default {}; } /** * Copyright © 2015-2020 <a href="http://www.jeeplus.org/">JeePlus</a> All rights reserved. */ package com.jeeplus.common.utils.excel.fieldtype; import com.jeeplus.common.utils.StringUtils; import com.jeeplus.modules.sys.entity.Area; import com.jeeplus.modules.sys.utils.UserUtils; /** * 字段类型转换 * @author jeeplus * @version 2013-03-10 */ public class AreaType { /** * 获取对象值（导入） */ public static Object getValue(String val) { for (Area e : UserUtils.getAreaList()){ if (StringUtils.trimToEmpty(val).equals(e.getName())){ return e; } } return null; } /** * 获取对象值（导出） */ public static String setValue(Object val) { if (val != null && ((Area)val).getName() != null){ return ((Area)val).getName(); } return ""; } } /** * Copyright © 2015-2020 <a href="http://www.jeeplus.org/">JeePlus</a> All rights reserved. */ package com.jeeplus.common.utils.excel.fieldtype; import com.jeeplus.common.utils.StringUtils; import com.jeeplus.modules.sys.entity.Office; import com.jeeplus.modules.sys.utils.UserUtils; /** * 字段类型转换 * @author jeeplus * @version 2013-03-10 */ public class OfficeType { /** * 获取对象值（导入） */ public static Object getValue(String val) { for (Office e : UserUtils.getOfficeList()){ if (StringUtils.trimToEmpty(val).equals(e.getName())){ return e; } } return null; } /** * 设置对象值（导出） */ public static String setValue(Object val) { if (val != null && ((Office)val).getName() != null){ return ((Office)val).getName(); } return ""; } } /** * Copyright © 2015-2020 <a href="http://www.jeeplus.org/">JeePlus</a> All rights reserved. */ package com.jeeplus.common.utils.excel.fieldtype; import java.util.List; import com.google.common.collect.Lists; import com.jeeplus.common.utils.Collections3; import com.jeeplus.common.utils.SpringContextHolder; import com.jeeplus.common.utils.StringUtils; import com.jeeplus.modules.sys.entity.Role; import com.jeeplus.modules.sys.service.SystemService; /** * 字段类型转换 * @author jeeplus * @version 2013-5-29 */ public class RoleListType { private static SystemService systemService = SpringContextHolder.getBean(SystemService.class); /** * 获取对象值（导入） */ public static Object getValue(String val) { List<Role> roleList = Lists.newArrayList(); List<Role> allRoleList = systemService.findAllRole(); for (String s : StringUtils.split(val, ",")){ for (Role e : allRoleList){ if (StringUtils.trimToEmpty(s).equals(e.getName())){ roleList.add(e); } } } return roleList.size()>0?roleList:null; } /** * 设置对象值（导出） */ public static String setValue(Object val) { if (val != null){ @SuppressWarnings("unchecked") List<Role> roleList = (List<Role>)val; return Collections3.extractToString(roleList, "name", ", "); } return ""; } } 具体 需要 jar包 可能有 相关 的jar包 poi-3.9.jar poi-ooxml-3.9.jar poi-ooxml-schemas-3.9.jar
最后 JeeSite只能导入导出单表 如果 想导入多表 数据 可能 需要 自己 定义一个 VO实体 类
博主 本人 没有 亲自 试过
