poi实现Excel导出

最近做了一个导出Excel的小功能，以前没接触过，现在分享下自己的代码，想让各位帮忙看看有啥地方可以优化，也方便自己以后查阅...

首先是excelAction的代码:

 1 /**

 2  * excelAction

 3  * @author zhaoxz

 4  *

 5  */

 6 @Controller("excelAction")

 7 @Scope("prototype")

 8 public class ExcelAction extends BaseAction {

 9     /**

10      * 

11      */

12     private static final long serialVersionUID = -4596726723629076906L;

13     private static final Logger logger = Logger.getLogger(ExcelAction.class);

14     @Resource

15     private CkdjService ckdjSrv;

16     private ExportExcel ex = new ExportExcel();

17     private Ckdj ckdj;

18     private String exportBatch;

19     private String fileName;

20     private InputStream excelStream;

21     

22 

23     public String execute() throws Exception {

24         return SUCCESS;

25     }

26     

27     /**

28      * 将workbook转换为InputStream

29      * @param workbook

30      * @param fileName

31      */

32     private void workbookInputStream(HSSFWorkbook workbook, String fileName) {

33         try {

34             this.setFileName(URLEncoder.encode(fileName, "UTF-8"));

35             ByteArrayOutputStream baos = new ByteArrayOutputStream();

36             workbook.write(baos);

37             baos.flush();

38             byte[] aa = baos.toByteArray();

39             this.excelStream = new ByteArrayInputStream(aa, 0, aa.length);

40             baos.close();

41         } catch (Exception e) {

42             logger.error("转换失败！", e);

43         }

44     }

45 

46     /**************************** get set **************************************/

47 

48     /**

49      * 获取文件流

50      * @return

51      */

52     public InputStream getExcelStream() {

53         try {

54             String[] headers =  

55             { "序号", "名称", "规格", "序列号", "数量", "单位", "出库人"};

56             ckdj = ckdjSrv.findById(ckdj);

57             System.out.println(getExportBatch());

58             HSSFWorkbook workbook = ex.exportExcel("出库列表", headers, ckdj ,exportBatch);

59             this.workbookInputStream(workbook, fileName);

60         } catch (Exception e) {

61             logger.error("获取文件流失败！", e);

62         }

63         return excelStream;

64     }

65 

66     public void setExcelStream(InputStream excelStream) {

67         this.excelStream = excelStream;

68     }

69 

70     public Ckdj getCkdj() {

71         return ckdj;

72     }

73 

74     public void setCkdj(Ckdj ckdj) {

75         this.ckdj = ckdj;

76     }

77     

78     public String getFileName() {

79         return fileName;

80     }

81 

82     public void setFileName(String fileName) {

83         this.fileName = fileName;

84     }

85 

86     public void setCkdjSrv(CkdjService ckdjSrv) {

87         this.ckdjSrv = ckdjSrv;

88     }

89 

90     public String getExportBatch() {

91         return exportBatch;

92     }

93 

94     public void setExportBatch(String exportBatch) {

95         this.exportBatch = exportBatch;

96     }

97 

98 }

接着是struts2.xml文件

1 <action name="exportExcel" class="excelAction">

2    <result name="success" type="stream">

3          <param name="contentType">application/vnd.ms-excel</param>

4          <param name="inputName">excelStream</param>

5          <param name="contentDisposition">attachment;filename="${fileName}.xls"</param>

6          <param name="bufferSize">1024</param> 

7    </result>

8 </action>

然后是ExportExcel.java类的代码：

  1 /**

  2  * 导出Excel文档

  3  * @author zhaoxz

  4  *

  5  */

  6 @SuppressWarnings("unchecked")

  7 public class ExportExcel {

  8     

  9     /**

 10      * 创建workbook

 11      * @param title

 12      * @param headers

 13      * @param ckdj

 14      */

 15     public HSSFWorkbook exportExcel(String title,String[] headers,Ckdj ckdj,String exportBatch){

 16         

 17         //声明一个工作薄

 18         HSSFWorkbook workbook = new HSSFWorkbook();

 19         //生成一个表格

 20         HSSFSheet sheet = workbook.createSheet(title);

 21         //设置表格默认列宽为15个字节

 22         sheet.setDefaultColumnWidth(15);

 23         //生成一个样式

 24         HSSFCellStyle style = workbook.createCellStyle();

 25         //设置样式

 26         style.setFillForegroundColor(HSSFColor.WHITE.index);

 27         style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);

 28         style.setBorderBottom(HSSFCellStyle.BORDER_THIN);

 29         style.setBorderLeft(HSSFCellStyle.BORDER_THIN);

 30         style.setBorderRight(HSSFCellStyle.BORDER_THIN);

 31         style.setBorderTop(HSSFCellStyle.BORDER_THIN);

 32         style.setAlignment(HSSFCellStyle.ALIGN_CENTER);

 33         //生成一个字体

 34         HSSFFont font = workbook.createFont();

 35         font.setColor(HSSFColor.BLACK.index);

 36         font.setFontHeightInPoints((short)14);

 37         font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);

 38         //把字体应用到当前样式

 39         style.setFont(font);

 40         

 41         // 生成并设置另一个样式  

 42         HSSFCellStyle style2 = workbook.createCellStyle();  

 43         style2.setFillForegroundColor(HSSFColor.WHITE.index);  

 44         style2.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);  

 45         style2.setBorderBottom(HSSFCellStyle.BORDER_THIN);  

 46         style2.setBorderLeft(HSSFCellStyle.BORDER_THIN);  

 47         style2.setBorderRight(HSSFCellStyle.BORDER_THIN);  

 48         style2.setBorderTop(HSSFCellStyle.BORDER_THIN);  

 49         style2.setAlignment(HSSFCellStyle.ALIGN_CENTER);  

 50         style2.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);  

 51         // 生成另一个字体  

 52         HSSFFont font2 = workbook.createFont();  

 53         font2.setFontHeightInPoints((short)12);

 54         font2.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);

 55         // 把字体应用到当前的样式  

 56         style2.setFont(font2);

 57         

 58         // 生成并设置另一个样式  

 59         HSSFCellStyle style3 = workbook.createCellStyle();  

 60         style3.setFillForegroundColor(HSSFColor.WHITE.index);  

 61         style3.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);  

 62         style3.setBorderBottom(HSSFCellStyle.BORDER_THIN);  

 63         style3.setBorderLeft(HSSFCellStyle.BORDER_THIN);  

 64         style3.setBorderRight(HSSFCellStyle.BORDER_THIN);  

 65         style3.setBorderTop(HSSFCellStyle.BORDER_THIN);  

 66         style3.setAlignment(HSSFCellStyle.ALIGN_LEFT);  

 67         style3.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);  

 68         // 生成另一个字体  

 69         HSSFFont font3 = workbook.createFont();  

 70         font3.setFontHeightInPoints((short)12);

 71         font3.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);

 72         // 把字体应用到当前的样式  

 73         style3.setFont(font3);

 74         

 75         // 生成并设置另一个样式   样式4

 76         HSSFCellStyle style4 = workbook.createCellStyle();  

 77         style4.setFillForegroundColor(HSSFColor.WHITE.index);  

 78         style4.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);  

 79         style4.setBorderBottom(HSSFCellStyle.BORDER_THIN);  

 80         style4.setBorderLeft(HSSFCellStyle.BORDER_THIN);  

 81         style4.setBorderRight(HSSFCellStyle.BORDER_THIN);  

 82         style4.setBorderTop(HSSFCellStyle.BORDER_THIN);  

 83         style4.setAlignment(HSSFCellStyle.ALIGN_CENTER);  

 84         style4.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);  

 85         // 生成另一个字体  

 86         HSSFFont font4 = workbook.createFont();  

 87         font4.setFontHeightInPoints((short)11);

 88         // 把字体应用到当前的样式  

 89         style4.setFont(font4);

 90         

 91         //产生表格标题行

 92         HSSFRow row = sheet.createRow(0);

 93         HSSFCell cel = row.createCell(0);

 94         cel.setCellStyle(style);

 95         cel.setCellValue("天维讯达无线电设备检测（北京）有限责任公司");

 96         HSSFCell c2 = row.createCell(1);

 97         c2.setCellStyle(style);

 98         HSSFCell c3 = row.createCell(2);

 99         c3.setCellStyle(style);

100         HSSFCell c4 = row.createCell(3);

101         c4.setCellStyle(style);

102         HSSFCell c5 = row.createCell(4);

103         c5.setCellStyle(style);

104         HSSFCell c6 = row.createCell(5);

105         c6.setCellStyle(style);

106         HSSFCell c7 = row.createCell(6);

107         c7.setCellStyle(style);

108         //合并单元格

109         sheet.addMergedRegion(new CellRangeAddress(0, 0, 0, 6));

110         

111         //2行

112         HSSFRow row2 = sheet.createRow(1);

113         HSSFCell cel2l = row2.createCell(0);

114         cel2l.setCellStyle(style2);

115         if(exportBatch.equals("0")){

116             cel2l.setCellValue("出库单");

117         }else{

118             cel2l.setCellValue("出库单(第"+ckdj.getBatch()+"批)");

119         }

120         HSSFCell rc2 = row2.createCell(1);

121         rc2.setCellStyle(style);

122         HSSFCell rc3 = row2.createCell(2);

123         rc3.setCellStyle(style);

124         HSSFCell rc4 = row2.createCell(3);

125         rc4.setCellStyle(style);

126         HSSFCell rc5 = row2.createCell(4);

127         rc5.setCellStyle(style);

128         HSSFCell rc6 = row2.createCell(5);

129         rc6.setCellStyle(style);

130         HSSFCell rc7 = row2.createCell(6);

131         rc7.setCellStyle(style);

132         sheet.addMergedRegion(new CellRangeAddress(1, 1, 0, 6)); //合并单元格

133         

134         //3行

135         HSSFRow rowhead = sheet.createRow(2);

136         sheet.addMergedRegion(new CellRangeAddress(2, 2, 0, 4)); //合并单元格

137         //3行左

138         HSSFCell cel3l = rowhead.createCell(0);

139         cel3l.setCellStyle(style3);

140         cel3l.setCellValue("所属项目："+ckdj.getProjectNumber());

141         //3行右

142         HSSFCell cel3r = rowhead.createCell(5);

143         cel3r.setCellStyle(style2);

144         cel3r.setCellValue("出库单号："+ckdj.getReleasingNumber());

145         HSSFCell cel27 = rowhead.createCell(6);

146         cel27.setCellStyle(style2);

147         sheet.addMergedRegion(new CellRangeAddress(2, 2, 5, 6));

148         

149         HSSFRow rowbody = sheet.createRow(3);

150         for (int i = 0; i < headers.length; i++) {

151             HSSFCell cell = rowbody.createCell(i);

152             cell.setCellStyle(style2);

153             HSSFRichTextString text = new HSSFRichTextString(headers[i]);

154             cell.setCellValue(text);

155         }

156         

157         //遍历集合数据，产生数据行

158         Iterator it = ckdj.getGoods().iterator();

159         int index = 3;

160         while (it.hasNext()) {

161             index++;

162             row = sheet.createRow(index);

163             CkdjDetailed t = (CkdjDetailed)it.next();

164             

165             //创建单元格

166             HSSFCell cell0 = row.createCell(0);

167             cell0.setCellStyle(style4);

168             cell0.setCellValue(t.getNum());

169             

170             HSSFCell cell1 = row.createCell(1);

171             cell1.setCellStyle(style4);

172             cell1.setCellValue(t.getEqName());

173             

174             HSSFCell cell2 = row.createCell(2);

175             cell2.setCellStyle(style4);

176             cell2.setCellValue(t.getEqStandard());

177             

178             HSSFCell cell3 = row.createCell(3);

179             cell3.setCellStyle(style4);

180             cell3.setCellValue(t.getEqSernumber());

181             

182             HSSFCell cell4 = row.createCell(4);

183             cell4.setCellStyle(style4);

184             cell4.setCellValue(t.getEqNums());

185             

186             HSSFCell cell5 = row.createCell(5);

187             cell5.setCellStyle(style4);

188             cell5.setCellValue(t.getEqUnits());

189             

190             HSSFCell cell6 = row.createCell(6);

191             cell6.setCellStyle(style4);

192             cell6.setCellValue("");

193         }

194         HSSFRow last1 = sheet.createRow(index+3);

195         HSSFCell lcel1 = last1.createCell(4);

196         lcel1.setCellValue("送货人：");

197         HSSFRow last2 = sheet.createRow(index+4);

198         HSSFCell lcel2 = last2.createCell(4);

199         lcel2.setCellValue("送货时间：");

200         HSSFRow last3 = sheet.createRow(index+5);

201         HSSFCell lcel3 = last3.createCell(4);

202         lcel3.setCellValue("收货人：");

203         HSSFRow last4 = sheet.createRow(index+6);

204         HSSFCell lcel4 = last4.createCell(4);

205         lcel4.setCellValue("收货时间：");

206         return workbook;

207     }

208     

209     /**

210      * 创建仓库workbook

211      * @param title

212      * @param headers

213      * @param rkdjs

214      * @return

215      */

216     public HSSFWorkbook exportWareExcel(String title,String[] headers,List<Rkdj> rkdjs){

217         

218         //声明一个工作薄

219         HSSFWorkbook workbook = new HSSFWorkbook();

220         //生成一个表格

221         HSSFSheet sheet = workbook.createSheet(title);

222         //设置表格默认列宽为15个字节

223         sheet.setDefaultColumnWidth(15);

224         //生成一个样式

225         HSSFCellStyle style = workbook.createCellStyle();

226         //设置样式

227         style.setFillForegroundColor(HSSFColor.WHITE.index);

228         style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);

229         style.setBorderBottom(HSSFCellStyle.BORDER_THIN);

230         style.setBorderLeft(HSSFCellStyle.BORDER_THIN);

231         style.setBorderRight(HSSFCellStyle.BORDER_THIN);

232         style.setBorderTop(HSSFCellStyle.BORDER_THIN);

233         style.setAlignment(HSSFCellStyle.ALIGN_CENTER);

234         //生成一个字体

235         HSSFFont font = workbook.createFont();

236         font.setColor(HSSFColor.BLACK.index);

237         font.setFontHeightInPoints((short)14);

238         font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);

239         //把字体应用到当前样式

240         style.setFont(font);

241         

242         // 生成并设置另一个样式  

243         HSSFCellStyle style2 = workbook.createCellStyle();  

244         style2.setFillForegroundColor(HSSFColor.WHITE.index);  

245         style2.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);  

246         style2.setBorderBottom(HSSFCellStyle.BORDER_THIN);  

247         style2.setBorderLeft(HSSFCellStyle.BORDER_THIN);  

248         style2.setBorderRight(HSSFCellStyle.BORDER_THIN);  

249         style2.setBorderTop(HSSFCellStyle.BORDER_THIN);  

250         style2.setAlignment(HSSFCellStyle.ALIGN_CENTER);  

251         style2.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);  

252         // 生成另一个字体  

253         HSSFFont font2 = workbook.createFont();  

254         font2.setFontHeightInPoints((short)12);

255         font2.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);

256         // 把字体应用到当前的样式  

257         style2.setFont(font2);

258         

259         // 生成并设置另一个样式  

260         HSSFCellStyle style3 = workbook.createCellStyle();  

261         style3.setFillForegroundColor(HSSFColor.WHITE.index);  

262         style3.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);  

263         style3.setBorderBottom(HSSFCellStyle.BORDER_THIN);  

264         style3.setBorderLeft(HSSFCellStyle.BORDER_THIN);  

265         style3.setBorderRight(HSSFCellStyle.BORDER_THIN);  

266         style3.setBorderTop(HSSFCellStyle.BORDER_THIN);  

267         style3.setAlignment(HSSFCellStyle.ALIGN_LEFT);  

268         style3.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);  

269         // 生成另一个字体  

270         HSSFFont font3 = workbook.createFont();  

271         font3.setFontHeightInPoints((short)12);

272         font3.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);

273         // 把字体应用到当前的样式  

274         style3.setFont(font3);

275         

276         // 生成并设置另一个样式   样式4

277         HSSFCellStyle style4 = workbook.createCellStyle();  

278         style4.setFillForegroundColor(HSSFColor.WHITE.index);  

279         style4.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);  

280         style4.setBorderBottom(HSSFCellStyle.BORDER_THIN);  

281         style4.setBorderLeft(HSSFCellStyle.BORDER_THIN);  

282         style4.setBorderRight(HSSFCellStyle.BORDER_THIN);  

283         style4.setBorderTop(HSSFCellStyle.BORDER_THIN);  

284         style4.setAlignment(HSSFCellStyle.ALIGN_CENTER);  

285         style4.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);  

286         // 生成另一个字体  

287         HSSFFont font4 = workbook.createFont();  

288         font4.setFontHeightInPoints((short)11);

289         // 把字体应用到当前的样式  

290         style4.setFont(font4);

291         

292         //列头

293         HSSFRow rowbody = sheet.createRow(0);

294         for (int i = 0; i < headers.length; i++) {

295             HSSFCell cell = rowbody.createCell(i);

296             cell.setCellStyle(style2);

297             HSSFRichTextString text = new HSSFRichTextString(headers[i]);

298             cell.setCellValue(text);

299         }

300         

301         //遍历集合数据，产生数据行

302         int index = 0;

303         Iterator it = rkdjs.iterator();

304         while (it.hasNext()) {

305             index++;

306             HSSFRow row = sheet.createRow(index);

307             Rkdj t = (Rkdj) it.next();

308             //创建单元格

309             HSSFCell cell0 = row.createCell(0);

310             cell0.setCellStyle(style4);

311             cell0.setCellValue(t.getJoinTime());

312             

313             HSSFCell cell1 = row.createCell(1);

314             cell1.setCellStyle(style4);

315             cell1.setCellValue(t.getJoinNumbers());

316             

317             HSSFCell cell2 = row.createCell(2);

318             cell2.setCellStyle(style4);

319             cell2.setCellValue(t.getEquipmentName());

320             

321             HSSFCell cell3 = row.createCell(3);

322             cell3.setCellStyle(style4);

323             cell3.setCellValue(t.getStandard());

324             

325             HSSFCell cell4 = row.createCell(4);

326             cell4.setCellStyle(style4);

327             cell4.setCellValue(t.getSeriesNumber());

328             

329             HSSFCell cell5 = row.createCell(5);

330             cell5.setCellStyle(style4);

331             cell5.setCellValue(t.getLocation());

332             

333             HSSFCell cell6 = row.createCell(6);

334             cell6.setCellStyle(style4);

335             cell6.setCellValue(t.getAmount());

336             

337             HSSFCell cell7 = row.createCell(7);

338             cell7.setCellStyle(style4);

339             cell7.setCellValue(t.getStock());

340             

341             HSSFCell cell8 = row.createCell(8);

342             cell8.setCellStyle(style4);

343             cell8.setCellValue(t.getComments());

344         }

345         return workbook;

346     }

347 }

这样基本就没什么问题了，本人小白，希望能得到更多的指导!在此多谢了....