导出Excel通用工具类

 1 /**
 2 * 
 3 */
 4 package com.car.ots.mpckp.utils;
 5 
 6 import java.io.OutputStream;
 7 import java.net.URLEncoder;
 8 import java.util.List;
 9 
10 import javax.servlet.http.HttpServletRequest;
11 import javax.servlet.http.HttpServletResponse;
12 
13 import org.apache.commons.beanutils.BeanUtils;
14 import org.apache.poi.hssf.usermodel.HSSFCell;
15 import org.apache.poi.hssf.usermodel.HSSFCellStyle;
16 import org.apache.poi.hssf.usermodel.HSSFRow;
17 import org.apache.poi.hssf.usermodel.HSSFSheet;
18 import org.apache.poi.hssf.usermodel.HSSFWorkbook;
19 
20 /**
21 * @author cora.guo
22 * 
23 */
24 public class ExportUtils {
25 
26 public static void createExcel(HttpServletRequest req,
27 HttpServletResponse resp, List<Object> datas, String sheetName,
28 List<String> headers, List<String> colunmValueNames)
29 throws Exception {
30 OutputStream out = null;
31 try {
32 // 第一步，创建一个webbook，对应一个Excel文件
33 resp.setContentType("application/vnd.ms-excel");
34 resp.setCharacterEncoding("UTF-8");
35 if (req.getHeader("User-Agent").toLowerCase().indexOf("msie") != -1) {
36 resp.setHeader("Content-Disposition", "attachment;filename="
37 + URLEncoder.encode(sheetName, "utf-8") + ".xls");
38 } else {
39 resp.setHeader("Content-Disposition", "attachment;filename="
40 + new String(sheetName.getBytes("utf-8"), "ISO-8859-1")
41 + ".xls");
42 }
43 resp.setHeader("Cache-Control", "max-age=0");
44 HSSFWorkbook wb = new HSSFWorkbook();
45 
46 // 第二步，在webbook中添加一个sheet,对应Excel文件中的sheet
47 HSSFSheet sheet = wb.createSheet(sheetName);
48 // 第三步，在sheet中添加表头第0行,注意老版本poi对Excel的行数列数有限制short
49 HSSFRow row = sheet.createRow(0);
50 // 第四步，创建单元格，并设置值表头 设置表头居中
51 HSSFCellStyle style = wb.createCellStyle();
52 // 创建居中样式
53 style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
54 HSSFCell cell = null;
55 if (headers != null && headers.size() > 0) {
56 for (int i = 0; i < headers.size(); i++) {
57 cell = row.createCell(i);
58 cell.setCellValue(headers.get(i));
59 cell.setCellStyle(style);
60 }
61 }
62 // 第五步，写入实体数据 实际应用中这些数据从数据库得到，
63 if (datas != null && datas.size() != 0) {
64 for (int r = 0; r < datas.size(); r++) {
65 Object obj = datas.get(r);
66 row = sheet.createRow(r+1);
67 if (colunmValueNames != null
68 && colunmValueNames.size() != 0) {
69 for (int j = 0; j < colunmValueNames.size(); j++) {
70 String name = colunmValueNames.get(j);
71 String value = BeanUtils.getProperty(obj, name);
72 // 创建单元格,设置值
73 cell = row.createCell(j);
74 cell.setCellStyle(style);
75 cell.setCellValue(value);
76 }
77 }
78 }
79 }
80 out = resp.getOutputStream();
81 wb.write(out);
82 } catch (Exception e) {
83 // TODO Auto-generated catch block
84 throw new Exception(e);
85 } finally {
86 out.close();
87 }
88 }
89 }

 1 package com.car.ots.uis.utils;
 2 
 3 import java.net.URLEncoder;
 4 import java.util.List;
 5 
 6 import javax.servlet.http.HttpServletRequest;
 7 import javax.servlet.http.HttpServletResponse;
 8 
 9 import jxl.Workbook;
10 import jxl.format.Alignment;
11 import jxl.format.VerticalAlignment;
12 import jxl.write.Label;
13 import jxl.write.WritableCellFormat;
14 import jxl.write.WritableFont;
15 import jxl.write.WritableSheet;
16 import jxl.write.WritableWorkbook;
17 
18 import org.apache.commons.beanutils.BeanUtils;
19 
20 public class ExportUtil {
21   public static void export(HttpServletRequest req, HttpServletResponse resp, List<Object> datas,
22       String sheetName, List<String> headers, List<String> colunmValueNames) throws Exception {
23     // 写入excel
24     WritableWorkbook wb = null;
25     WritableSheet ws = null;
26     Label label = null;
27 
28     try {
29       resp.setContentType("application/vnd.ms-excel");
30       resp.setCharacterEncoding("UTF-8");
31       if (req.getHeader("User-Agent").toLowerCase().indexOf("msie") != -1) {
32         resp.setHeader("Content-Disposition",
33             "attachment;filename=" + URLEncoder.encode(sheetName, "utf-8") + ".xls");
34       } else {
35         resp.setHeader("Content-Disposition",
36             "attachment;filename=" + new String(sheetName.getBytes("utf-8"), "ISO-8859-1") + ".xls");
37       }
38       resp.setHeader("Cache-Control", "max-age=0");
39       wb = Workbook.createWorkbook(resp.getOutputStream());
40 
41       ws = wb.createSheet(sheetName, 0);
42 
43       WritableFont bold_font = new WritableFont(WritableFont.ARIAL, 10, WritableFont.BOLD);
44       WritableCellFormat f = new WritableCellFormat(bold_font);
45       f.setVerticalAlignment(VerticalAlignment.CENTRE);
46       f.setAlignment(Alignment.CENTRE);
47       if(headers!=null&headers.size()!=0){
48           for (int i = 0; i < headers.size(); i++) {
49               ws.setColumnView(i, 25);
50               label = new Label(i, 0, headers.get(i), f);
51               ws.addCell(label);
52           }
53       }
54 
55       WritableFont nobold_font = new WritableFont(WritableFont.ARIAL, 10, WritableFont.NO_BOLD);
56       f = new WritableCellFormat(nobold_font);
57       f.setVerticalAlignment(VerticalAlignment.CENTRE);
58       f.setAlignment(Alignment.CENTRE);
59       if(datas!=null&&datas.size()!=0){
60           for (int r = 0; r < datas.size(); r++) {
61               Object obj = datas.get(r);
62               if (colunmValueNames!=null&&colunmValueNames.size()!=0) {
63                   for (int j = 0; j < colunmValueNames.size(); j++) {
64                       String name = colunmValueNames.get(j);
65                       String value = BeanUtils.getProperty(obj, name);
66                       label = new Label(j, r + 1, value, f);
67                       ws.addCell(label);
68                   }
69             }
70           }
71       }
72       wb.write();
73     } catch (Exception e) {
74       throw new Exception(e);
75     } finally {
76       wb.write();
77       wb.close();
78 
79     }
80   }
81 
82 }