package com.yjd.admin.util;

 import java.io.IOException;

 import java.io.OutputStream;

 import java.lang.reflect.Field;

 import java.lang.reflect.InvocationTargetException;

 import java.lang.reflect.Method;

 import java.text.SimpleDateFormat;

 import java.util.Collection;

 import java.util.Date;

 import java.util.Iterator;

 import java.util.regex.Matcher;

 import java.util.regex.Pattern;

 import org.apache.poi.hssf.usermodel.HSSFCell;

 import org.apache.poi.hssf.usermodel.HSSFCellStyle;

 import org.apache.poi.hssf.usermodel.HSSFClientAnchor;

 import org.apache.poi.hssf.usermodel.HSSFComment;

 import org.apache.poi.hssf.usermodel.HSSFFont;

 import org.apache.poi.hssf.usermodel.HSSFPatriarch;

 import org.apache.poi.hssf.usermodel.HSSFRichTextString;

 import org.apache.poi.hssf.usermodel.HSSFRow;

 import org.apache.poi.hssf.usermodel.HSSFSheet;

 import org.apache.poi.hssf.usermodel.HSSFWorkbook;

 import org.apache.poi.hssf.util.HSSFColor;

 /**

  * 利用开源组件POI3.0.2动态导出EXCEL文档 转载时请保留以下信息，注明出处！

  *

  * @author leno

  * @version v1.0

  * @param <T>

  *            应用泛型，代表任意一个符合javabean风格的类

  *            注意这里为了简单起见，boolean型的属性xxx的get器方式为getXxx(),而不是isXxx()

  *            byte[]表jpg格式的图片数据

  */

 public class ExportExcel<T> {

     public void exportExcel(Collection<T> dataset, OutputStream out) {

         exportExcel("测试POI导出EXCEL文档", null, dataset, out, "yyyy-MM-dd");

     }

     public void exportExcel(String[] headers, Collection<T> dataset,

             OutputStream out) {

         exportExcel("测试POI导出EXCEL文档", headers, dataset, out, "yyyy-MM-dd");

     }

     public void exportExcel(String[] headers, Collection<T> dataset,

             OutputStream out, String pattern) {

         exportExcel("测试POI导出EXCEL文档", 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<T> 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*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<T> it = dataset.iterator();

         int index = 0;

         while (it.hasNext()) {

             index++;

             row = sheet.createRow(index);

             T t = (T) it.next();

             // 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();

             for (short i = 0; i < fields.length; i++) {

                 HSSFCell cell = row.createCell(i);

                 cell.setCellStyle(style2);

                 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[] {});

                     // 判断值的类型后进行强制类型转换

                     String textValue = null;

                     // if (value instanceof Integer) {

                     // int intValue = (Integer) value;

                     // cell.setCellValue(intValue);

                     // } else if (value instanceof Float) {

                     // float fValue = (Float) value;

                     // textValue = new HSSFRichTextString(

                     // String.valueOf(fValue));

                     // cell.setCellValue(textValue);

                     // } else if (value instanceof Double) {

                     // double dValue = (Double) value;

                     // textValue = new HSSFRichTextString(

                     // String.valueOf(dValue));

                     // cell.setCellValue(textValue);

                     // } else if (value instanceof Long) {

                     // long longValue = (Long) value;

                     // cell.setCellValue(longValue);

                     // }

                     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();

         }

     }

 }

 package com.yjd.admin.vo;

 import java.util.Date;

 public class P2pLoanPlanVo {

          private Date repayDate;

         private double repayAmount;

         private Integer repayDays;

         private Integer repayYqDays;

         private Double lateAmount;

         private String isPosPaid;

         private String statusName;

         private String isSysPay;

         public Date getRepayDate() {

             return repayDate;

         }

         public void setRepayDate(Date repayDate) {

             this.repayDate = repayDate;

         }

         public double getRepayAmount() {

             return repayAmount;

         }

         public void setRepayAmount(double repayAmount) {

             this.repayAmount = repayAmount;

         }

         public Integer getRepayDays() {

             return repayDays;

         }

         public void setRepayDays(Integer repayDays) {

             this.repayDays = repayDays;

         }

         public Integer getRepayYqDays() {

             return repayYqDays;

         }

         public void setRepayYqDays(Integer repayYqDays) {

             this.repayYqDays = repayYqDays;

         }

         public Double getLateAmount() {

             return lateAmount;

         }

         public void setLateAmount(Double lateAmount) {

             this.lateAmount = lateAmount;

         }

         public String getIsPosPaid() {

             return isPosPaid;

         }

         public void setIsPosPaid(String isPosPaid) {

             this.isPosPaid = isPosPaid;

         }

         public String getStatusName() {

             return statusName;

         }

         public void setStatusName(String statusName) {

             this.statusName = statusName;

         }

         public String getIsSysPay() {

             return isSysPay;

         }

         public void setIsSysPay(String isSysPay) {

             this.isSysPay = isSysPay;

         }

 }

 /**

      * 导出excel数据

      * @param id

      * @param m

      * @return

      */

     @RequestMapping("/exportExcel")

     public void exportExcel(@RequestParam("id") Integer id, Model m,HttpServletRequest req, HttpServletResponse resp) {

         try {

             ExportExcel<P2pLoanPlanVo> ex = new ExportExcel<P2pLoanPlanVo>();

             String[] headers = {"最迟还款日", "还款金额","剩余几天","逾期几天", "罚息","是否垫付","状态","是否发放收益"};

             List<P2pLoanPlanVo> dataset = new ArrayList<P2pLoanPlanVo>();

             List<P2pLoanPlan> plans = this.planService.getListByLoan(id);

             for (int i = 0; i < plans.size(); i++) {

                 P2pLoanPlanVo p2pLoanPlanVo = new P2pLoanPlanVo();

                 p2pLoanPlanVo.setRepayDate(plans.get(i).getRepayDate());

                 p2pLoanPlanVo.setRepayAmount(plans.get(i).getRepayAmount());

                 if(plans.get(i).getRepayDays() >= 0 && plans.get(i).getStatus() == 0){

                     p2pLoanPlanVo.setRepayDays(plans.get(i).getRepayDays());

                 }else{

                     p2pLoanPlanVo.setRepayDays(0);

                 }

                 if(plans.get(i).getRepayDays() < 0 && plans.get(i).getStatus() == 0){

                     p2pLoanPlanVo.setRepayYqDays(-plans.get(i).getRepayDays());

                 }else{

                     p2pLoanPlanVo.setRepayYqDays(0);

                 }

                 p2pLoanPlanVo.setLateAmount(plans.get(i).getLateAmount());

                 String IsPosPaid = "";

                 if(plans.get(i).getIsPosPaid()==true){

                     IsPosPaid = "已垫付";

                 }else{

                     IsPosPaid = "未垫付";

                 }

                 p2pLoanPlanVo.setIsPosPaid(IsPosPaid);

                 p2pLoanPlanVo.setStatusName(plans.get(i).getStatusName());

                 String IsSysPay ="";

                 if(plans.get(i).getIsSysPay() == true){

                     IsSysPay = "已发放收益";

                 }else{

                     IsSysPay = "未发放收益";

                 }

                 p2pLoanPlanVo.setIsSysPay(IsSysPay);

                 dataset.add(p2pLoanPlanVo);

             }

             try {

                 req.setCharacterEncoding("UTF-8");

                 resp.setCharacterEncoding("UTF-8");

                 resp.setContentType("application/x-download");

                 String filedisplay = "还款计划.xls";

                 //防止文件名含有中文乱码

                 filedisplay = new String( filedisplay.getBytes("gb2312"), "ISO8859-1" );

                 resp.setHeader("Content-Disposition", "attachment;filename="+ filedisplay);

                 OutputStream out = resp.getOutputStream();

                 ex.exportExcel(headers, dataset, out);

                 out.close();

             } catch (FileNotFoundException e) {

                 e.printStackTrace();

             } catch (IOException e) {

                 e.printStackTrace();

             }

         } catch (Exception e) {

             Exceptions.getExceptionMsg(e, logger);

         }

     }