poi导出excel

<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi</artifactId>
    <version>3.12</version>
</dependency>
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>3.12</version>
</dependency>

 1 package com.test.excel;
 2 
 3 import java.io.FileOutputStream;
 4 import java.util.ArrayList;
 5 import java.util.List;
 6 
 7 import org.apache.poi.ss.usermodel.Cell;
 8 import org.apache.poi.ss.usermodel.Row;
 9 import org.apache.poi.ss.usermodel.Sheet;
10 import org.apache.poi.xssf.streaming.SXSSFWorkbook;
11 
12 /**
13  * 
14  *excle导出 
15  */
16 public class ExcelCreate {
17 
18     /**
19      * excel生成
20      */
21     public static void main(String[] args) throws Throwable {
22         // 表头
23         List<String> headerList = new ArrayList<>(10);
24         for (int i = 1; i <= 10; i++) {
25             headerList.add("表头" + i);
26         }
27 
28         // 数据
29         List<String[]> dataRowList2 = new ArrayList<String[]>(10);
30         for (int i = 1; i <= headerList.size(); i++) {
31             dataRowList2.add(new String[] { "数据" + i, "数据" + i, "数据" + i, "数据" + i, "数据" + i, "数据" + i, "数据" + i, "数据" + i, "数据" + i, "数据" + i });
32         }
33 
34         SXSSFWorkbook workbook = new SXSSFWorkbook(90);
35         Sheet sheet = workbook.createSheet("Export");
36 
37         int rownum = 0;
38         // 表头
39         Row row = sheet.createRow(rownum++);
40         for (int i = 0; i < headerList.size(); i++) {
41             Cell cell = row.createCell(i);
42             cell.setCellValue(headerList.get(i));
43         }
44 
45         // 数据
46         for (String[] array : dataRowList2) {
47             row = sheet.createRow(rownum++);
48             String[] arraya = (String[]) array;
49             for (int i = 0; i < dataRowList2.size(); i++) {
50                 Cell cell = row.createCell(i);
51                 cell.setCellValue(arraya[i]);
52             }
53         }
54 
55         
56         FileOutputStream os = new FileOutputStream("c:/test/testexcel.xlsx");
57         
58         //以下代码可进行文件下载
59 //        response.reset();
60 //        response.setContentType("application/octet-stream; charset=utf-8");
61 //        response.setHeader("Content-Disposition", "attachment; filename="+Encodes.urlEncode("testexcel.xlsx"));
62 //        write(response.getOutputStream());
63         
64         workbook.write(os);
65         workbook.dispose();
66     }
67 }