excle导出、导入、下载_jeesite注解@ExcelField

• 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 &copy; 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 &copy; 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)