package east.mvc.utils;import java.io.*;import java.lang.reflect.*;import java.text.SimpleDateFormat;import java.util.*;import java.util.regex.*;import javax.swing.JOptionPane;import org.apache.poi.hssf.usermodel.*;import org.apache.poi.hssf.util.HSSFColor;import org.apache.poi.ss.formula.functions.T;import org.apache.poi.ss.usermodel.Cell;public class ExportExcel
     
       {    public void exportExcel(Collection
      
        dataset, OutputStream out) {        exportExcel("Sheet1", null, dataset, out, "yyyy-MM-dd");    }    public void exportExcel(String[] headers, Map dataset, OutputStream out) {        exportExcel("Sheet2", headers, dataset, out, "yyyy-MM-dd");    }    public void exportExcel(String[] headers, Collection
       
         dataset,            OutputStream out) {        exportExcel("Sheet3", headers, dataset, out, "yyyy-MM-dd");    }    public void exportExcel(String[] headers, Collection
        
          dataset,            OutputStream out, String pattern) {        exportExcel("Sheet4", headers, dataset, out, pattern);    }    /**     * 这是一个通用的方法，利用了JAVA的反射机制，可以将放置在JAVA集合中并且符号一定条件的数据以EXCEL 的形式输出到指定IO设备上     *      * @param title     *            表格标题名     * @param headers     *            表格属性列名数组     * @param dataset     *            需要显示的数据集合,集合中一定要放置符合javabean风格的类的对象。此方法支持的     *            javabean属性的数据类型有基本数据类型及String,Date,byte[](图片数据)     * @param out     *            与输出设备关联的流对象，可以将EXCEL文档导出到本地文件或者网络中     * @param pattern     *            如果有时间数据，设定输出格式。默认为"yyy-MM-dd"     */    @SuppressWarnings("unchecked")    public void exportExcel(String title, String[] headers,            Collection
         
           dataset, OutputStream out, String pattern) {        // 声明一个工作薄        HSSFWorkbook workbook = new HSSFWorkbook();        // 生成一个表格        HSSFSheet sheet = workbook.createSheet(title);        // 设置表格默认列宽度为15个字节        sheet.setDefaultColumnWidth((short) 15);        // 生成一个样式        HSSFCellStyle style = workbook.createCellStyle();        // 设置这些样式        style.setFillForegroundColor(HSSFColor.SKY_BLUE.index);        style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);        style.setBorderBottom(HSSFCellStyle.BORDER_THIN);        style.setBorderLeft(HSSFCellStyle.BORDER_THIN);        style.setBorderRight(HSSFCellStyle.BORDER_THIN);        style.setBorderTop(HSSFCellStyle.BORDER_THIN);        style.setAlignment(HSSFCellStyle.ALIGN_CENTER);        // 生成一个字体        HSSFFont font = workbook.createFont();        font.setColor(HSSFColor.VIOLET.index);        font.setFontHeightInPoints((short) 12);        font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);        // 把字体应用到当前的样式        style.setFont(font);        // 生成并设置另一个样式        HSSFCellStyle style2 = workbook.createCellStyle();        style2.setFillForegroundColor(HSSFColor.LIGHT_YELLOW.index);        style2.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);        style2.setBorderBottom(HSSFCellStyle.BORDER_THIN);        style2.setBorderLeft(HSSFCellStyle.BORDER_THIN);        style2.setBorderRight(HSSFCellStyle.BORDER_THIN);        style2.setBorderTop(HSSFCellStyle.BORDER_THIN);        style2.setAlignment(HSSFCellStyle.ALIGN_CENTER);        style2.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);        // 生成另一个字体        HSSFFont font2 = workbook.createFont();        font2.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL);        // 把字体应用到当前的样式        style2.setFont(font2);        // 声明一个画图的顶级管理器        HSSFPatriarch patriarch = sheet.createDrawingPatriarch();        // 定义注释的大小和位置,详见文档        HSSFComment comment = patriarch.createComment(new HSSFClientAnchor(0,                0, 0, 0, (short) 4, 2, (short) 6, 5));        // 设置注释内容        comment.setString(new HSSFRichTextString("可以在POI中添加注释！"));        // 设置注释作者，当鼠标移动到单元格上是可以在状态栏中看到该内容.        comment.setAuthor("leno");        // 产生表格标题行        HSSFRow row = sheet.createRow(0);        for (short i = 0; i < headers.length; i++) {            HSSFCell cell = row.createCell(i);            cell.setCellStyle(style);            HSSFRichTextString text = new HSSFRichTextString(headers[i]);            cell.setCellValue(text);        }        // 遍历集合数据，产生数据行        Iterator
          
            it = dataset.iterator(); int index = 0; while (it.hasNext()) { index++; row = sheet.createRow(index); T t = (T) it.next(); // map.put("dataset", dataset); // 利用反射，根据javabean属性的先后顺序，动态调用getXxx()方法得到属性值 // Field[] fields = t.getClass().getDeclaredFields(); Field[] fields = t.getClass().getDeclaredFields(); for (short i = 0; i < fields.length; i++) { HSSFCell cell = row.createCell(i); Field field = fields[i]; String fieldName = field.getName(); String getMethodName = "get" + fieldName.substring(0, 1).toUpperCase() + fieldName.substring(1); try { Class tCls = t.getClass(); Method getMethod = tCls.getMethod(getMethodName, new Class[] {}); Object value = getMethod.invoke(t, new Object[] {}); if (value == null) { System.out.println("kong value"); continue; } // 判断值的类型后进行强制类型转换 String textValue = null; if (value instanceof Boolean) { boolean bValue = (Boolean) value; textValue = "男"; if (!bValue) { textValue = "女"; } } else if (value instanceof Date) { Date date = (Date) value; SimpleDateFormat sdf = new SimpleDateFormat(pattern); textValue = sdf.format(date); } else if (value instanceof byte[]) { // 有图片时，设置行高为60px; row.setHeightInPoints(60); // 设置图片所在列宽度为80px,注意这里单位的一个换算 sheet.setColumnWidth(i, (short) (35.7 * 80)); // sheet.autoSizeColumn(i); byte[] bsValue = (byte[]) value; HSSFClientAnchor anchor = new HSSFClientAnchor(0, 0, 1023, 255, (short) 6, index, (short) 6, index); anchor.setAnchorType(2); patriarch.createPicture(anchor, workbook.addPicture( bsValue, HSSFWorkbook.PICTURE_TYPE_JPEG)); } else { // 其它数据类型都当作字符串简单处理 textValue = value.toString(); } // 如果不是图片数据，就利用正则表达式判断textValue是否全部由数字组成 if (textValue != null) { Pattern p = Pattern.compile("^//d+(//.//d+)?$"); Matcher matcher = p.matcher(textValue); if (matcher.matches()) { // 是数字当作double处理 cell.setCellValue(Double.parseDouble(textValue)); } else { HSSFRichTextString richString = new HSSFRichTextString( textValue); HSSFFont font3 = workbook.createFont(); font3.setColor(HSSFColor.BLUE.index); richString.applyFont(font3); cell.setCellValue(richString); } } } catch (SecurityException e) { e.printStackTrace(); } catch (NoSuchMethodException e) { e.printStackTrace(); } catch (IllegalArgumentException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } catch (InvocationTargetException e) { e.printStackTrace(); } finally { // 清理资源 } } } try { workbook.write(out); } catch (IOException e) { e.printStackTrace(); } } public void exportExcel(String title, String[] headers, Map
           
             dataset, OutputStream out, String pattern) { // 声明一个工作薄 HSSFWorkbook workbook = new HSSFWorkbook(); // 生成一个表格 HSSFSheet sheet = workbook.createSheet(title); // 设置表格默认列宽度为15个字节 sheet.setDefaultColumnWidth((short) 15); // 生成一个样式 HSSFCellStyle style = workbook.createCellStyle(); // 设置这些样式 style.setFillForegroundColor(HSSFColor.SKY_BLUE.index); style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); style.setBorderBottom(HSSFCellStyle.BORDER_THIN); style.setBorderLeft(HSSFCellStyle.BORDER_THIN); style.setBorderRight(HSSFCellStyle.BORDER_THIN); style.setBorderTop(HSSFCellStyle.BORDER_THIN); style.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 生成一个字体 HSSFFont font = workbook.createFont(); font.setColor(HSSFColor.VIOLET.index); font.setFontHeightInPoints((short) 12); font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); // 把字体应用到当前的样式 style.setFont(font); // 生成并设置另一个样式 HSSFCellStyle style2 = workbook.createCellStyle(); style2.setFillForegroundColor(HSSFColor.LIGHT_YELLOW.index); style2.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); style2.setBorderBottom(HSSFCellStyle.BORDER_THIN); style2.setBorderLeft(HSSFCellStyle.BORDER_THIN); style2.setBorderRight(HSSFCellStyle.BORDER_THIN); style2.setBorderTop(HSSFCellStyle.BORDER_THIN); style2.setAlignment(HSSFCellStyle.ALIGN_CENTER); style2.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); // 生成另一个字体 HSSFFont font2 = workbook.createFont(); font2.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL); // 把字体应用到当前的样式 style2.setFont(font2); // 声明一个画图的顶级管理器 HSSFPatriarch patriarch = sheet.createDrawingPatriarch(); // 定义注释的大小和位置,详见文档 HSSFComment comment = patriarch.createComment(new HSSFClientAnchor(0, 0, 0, 0, (short) 4, 2, (short) 6, 5)); // 设置注释内容 comment.setString(new HSSFRichTextString("可以在POI中添加注释！")); // 设置注释作者，当鼠标移动到单元格上是可以在状态栏中看到该内容. comment.setAuthor("leno"); // 产生表格标题行 HSSFRow row = sheet.createRow(0); for (short i = 0; i < headers.length; i++) { HSSFCell cell = row.createCell(i); cell.setCellStyle(style); HSSFRichTextString text = new HSSFRichTextString(headers[i]); cell.setCellValue(text); } // 遍历集合数据，产生数据行 Collection a = dataset.values(); Iterator it = a.iterator(); int index = 0; while (it.hasNext()) { index++; row = sheet.createRow(index); T t = (T) it.next(); // map.put("dataset", dataset); // 利用反射，根据javabean属性的先后顺序，动态调用getXxx()方法得到属性值 // Field[] fields = t.getClass().getDeclaredFields(); Field[] fields = t.getClass().getDeclaredFields(); for (short i = 0; i < fields.length; i++) { HSSFCell cell = row.createCell(i); Field field = fields[i]; String fieldName = field.getName(); String getMethodName = "get" + fieldName.substring(0, 1).toUpperCase() + fieldName.substring(1); try { Class tCls = t.getClass(); Method getMethod = tCls.getMethod(getMethodName, new Class[] {}); Object value = getMethod.invoke(t, new Object[] {}); if (value == null) { System.out.println("kong value"); continue; } // 判断值的类型后进行强制类型转换 String textValue = null; if (value instanceof Boolean) { boolean bValue = (Boolean) value; textValue = "男"; if (!bValue) { textValue = "女"; } } else if (value instanceof Date) { Date date = (Date) value; SimpleDateFormat sdf = new SimpleDateFormat(pattern); textValue = sdf.format(date); } else if (value instanceof byte[]) { // 有图片时，设置行高为60px; row.setHeightInPoints(60); // 设置图片所在列宽度为80px,注意这里单位的一个换算 sheet.setColumnWidth(i, (short) (35.7 * 80)); // sheet.autoSizeColumn(i); byte[] bsValue = (byte[]) value; HSSFClientAnchor anchor = new HSSFClientAnchor(0, 0, 1023, 255, (short) 6, index, (short) 6, index); anchor.setAnchorType(2); patriarch.createPicture(anchor, workbook.addPicture( bsValue, HSSFWorkbook.PICTURE_TYPE_JPEG)); } else { // 其它数据类型都当作字符串简单处理 textValue = value.toString(); } // 如果不是图片数据，就利用正则表达式判断textValue是否全部由数字组成 if (textValue != null) { Pattern p = Pattern.compile("^//d+(//.//d+)?$"); Matcher matcher = p.matcher(textValue); if (matcher.matches()) { // 是数字当作double处理 cell.setCellValue(Double.parseDouble(textValue)); } else { HSSFRichTextString richString = new HSSFRichTextString( textValue); HSSFFont font3 = workbook.createFont(); font3.setColor(HSSFColor.BLUE.index); richString.applyFont(font3); cell.setCellValue(richString); } } } catch (SecurityException e) { e.printStackTrace(); } catch (NoSuchMethodException e) { e.printStackTrace(); } catch (IllegalArgumentException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } catch (InvocationTargetException e) { e.printStackTrace(); } finally { // 清理资源 } } } try { workbook.write(out); } catch (IOException e) { e.printStackTrace(); } } private String ConvertCellStr(Cell cell, String cellStr) { switch (cell.getCellType()) { case Cell.CELL_TYPE_STRING: cellStr = cell.getStringCellValue().toString(); break; case Cell.CELL_TYPE_BOOLEAN: cellStr = String.valueOf(cell.getBooleanCellValue()); break; } return null; } public static void main(String[] args) { // 测试学生 ExportExcel
            
              ex = new ExportExcel
             
              (); String[] headers = { "学号", "年龄", "姓名" }; List
              
                dataset = new ArrayList
               
                (); dataset.add(new Userinfos("11", 101, "11")); dataset.add(new Userinfos("11", 102, "11")); dataset.add(new Userinfos("11", 103, "11")); // 测试图书 try { OutputStream out = new FileOutputStream("E://a.xls"); ex.exportExcel(headers, dataset, out); out.close(); JOptionPane.showMessageDialog(null, "导出成功!"); System.out.println("excel导出成功！"); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } }}
               
              
             
            
           
          
         
        
       
      
     

@RequestMapping("/exportExcel")    public String exportExcel(HttpServletRequest request,            HttpServletResponse response) throws IOException {        response.setContentType("octets/stream");        response.addHeader("Content-Disposition",                "attachment;filename=test.xls");        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");        String filename = format.format(new Date().getTime()) + ".xls";        response.setContentType("application/ms-excel;charset=UTF-8");        response.setHeader("Content-Disposition", "attachment;filename="                .concat(String.valueOf(URLEncoder.encode(filename, "UTF-8"))));        //        String[] headers = { "学号", "年龄", "姓名" };        List
     
       dataset = new ArrayList
      
       ();        dataset.add(new Userinfos("11", 101, "11"));        dataset.add(new Userinfos("11", 102, "11"));        dataset.add(new Userinfos("11", 103, "11"));        //        OutputStream out = response.getOutputStream();        ExportExcel
       
         ex = new ExportExcel
        
         ();        //        try {            ex.exportExcel(headers, dataset, out);            System.out.println("success");        } catch (Exception e) {            e.printStackTrace();            System.out.println("error");        } finally {            out.close();        }        return null;    }
        
       
      
     

function exportExcelFun() {

var url="${ctx}/mapStatHistory/exportExcel";

window.open(url);

}