JavaWeb中如何导出Excel

如何在JavaWeb中导出Excel

代码自解释

1，依赖包

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1. <dependency>  
2.     <groupId>org.apache.poi</groupId>  
3.     <artifactId>poi</artifactId>  
4.     <version>3.16</version>  
5. </dependency>  

2，编写Controller ，参考 点击打开链接

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1. @RequestMapping("/export")  
2.     public void export(HttpServletRequest request, HttpServletResponse response) {  
3.         // @See http://www.cnblogs.com/dingjiaoyang/p/5831049.html  
4.         response.setContentType("application/vnd.ms-excel");  
5.         response.setHeader("Content-disposition", "attachment;filename=myExcel.xls");  
6.         OutputStream ouputStream = null;  
7.         HSSFWorkbook wb = exportData();  
8.         try {  
9.             ouputStream = response.getOutputStream();  
10.             wb.write(ouputStream);  
11.         } catch (Exception e) {  
12.             throw new RuntimeException("系统异常");  
13.         } finally {  
14.             try {  
15.                 ouputStream.flush();  
16.                 ouputStream.close();  
17.             } catch (Exception e) {  
18.                 throw new RuntimeException("系统异常");  
19.             }  
20.         }  
21.     }  

3，Excel文件数据

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1. private HSSFWorkbook exportData() {  
2.         // 创建工作空间  
3.         HSSFWorkbook wb = new HSSFWorkbook();  
4.         // 创建表  
5.         HSSFSheet sheet = wb.createSheet("mySheet");  
6.         sheet.setDefaultColumnWidth(20);  
7.         sheet.setDefaultRowHeightInPoints(20);  
8.   
9.         // 创建行  
10.         HSSFRow row = sheet.createRow((int) 0);  
11.   
12.         // 生成一个样式  
13.         HSSFCellStyle style = wb.createCellStyle();  
14.         style.setAlignment(HorizontalAlignment.CENTER);// 水平居中  
15.         style.setVerticalAlignment(VerticalAlignment.CENTER);// 垂直居中  
16.   
17.         // 背景色  
18.         style.setFillForegroundColor(HSSFColor.HSSFColorPredefined.YELLOW.getIndex());  
19.         style.setFillPattern(FillPatternType.SOLID_FOREGROUND);  
20.         style.setFillBackgroundColor(HSSFColor.HSSFColorPredefined.YELLOW.getIndex());  
21.   
22.         // 设置边框  
23.         style.setBorderBottom(BorderStyle.THIN);  
24.         style.setBorderLeft(BorderStyle.THIN);  
25.         style.setBorderRight(BorderStyle.THIN);  
26.         style.setBorderTop(BorderStyle.THIN);  
27.   
28.         // 生成一个字体  
29.         HSSFFont font = wb.createFont();  
30.         font.setFontHeightInPoints((short) 10);  
31.         font.setColor(HSSFColor.HSSFColorPredefined.RED.getIndex());  
32.         font.setBold(true);  
33.         font.setFontName("宋体");  
34.   
35.         // 把字体 应用到当前样式  
36.         style.setFont(font);  
37.           
38.         // 添加表头数据  
39.         String[] excelHeader = { "row1", "row2", "row3" };  
40.         for (int i = 0; i < excelHeader.length; i++) {  
41.             HSSFCell cell = row.createCell(i);  
42.             cell.setCellValue(excelHeader[i]);  
43.             cell.setCellStyle(style);  
44.         }  
45.           
46.         // 添加单元格数据  
47.         for (int i = 0; i < 3; i++) {  
48.             row = sheet.createRow(i + 1);  
49.             row.createCell(0).setCellValue("line" + i + ":row" + 1);  
50.             row.createCell(1).setCellValue("line" + i + ":row" + 2);  
51.             row.createCell(2).setCellValue("line" + i + ":row" + 3);  
52.         }  
53.         return wb;  
54.     }  

转自：https://blog.csdn.net/tidu2chengfo/article/details/75577112