Java Web利用POI导出Excel简单例子

采用Spring mvc架构：

Controller层代码如下

Java代码


@Controller
public class StudentExportController{

@Autowired
private StudentExportService studentExportService;

@RequestMapping(value = "/excel/export")
public void exportExcel(HttpServletRequest request, HttpServletResponse response)
throws Exception {

List<Student> list = new ArrayList<Student>();
list.add(new Student(1000,"zhangsan","20"));
list.add(new Student(1001,"lisi","23"));
list.add(new Student(1002,"wangwu","25"));
HSSFWorkbook wb = studentExportService.export(list);
response.setContentType("application/vnd.ms-excel");
response.setHeader("Content-disposition", "attachment;filename=student.xls");
OutputStream ouputStream = response.getOutputStream();
wb.write(ouputStream);
ouputStream.flush();
ouputStream.close();
}
}

Service层代码如下：

Java代码


@Service
public class StudentExportService {

String[] excelHeader = { "Sno", "Name", "Age"};
public HSSFWorkbook export(List<Student> list) {
HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet sheet = wb.createSheet("Student");
HSSFRow row = sheet.createRow((int) 0);
HSSFCellStyle style = wb.createCellStyle();
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);

for (int i = 0; i < excelHeader.length; i++) {
HSSFCell cell = row.createCell(i);
cell.setCellValue(excelHeader[i]);
cell.setCellStyle(style);
sheet.autoSizeColumn(i);
// sheet.SetColumnWidth(i, 100 * 256);
}

for (int i = 0; i < list.size(); i++) {
row = sheet.createRow(i + 1);
Student student = list.get(i);
row.createCell(0).setCellValue(student.getSno());
row.createCell(1).setCellValue(student.getName());
row.createCell(2).setCellValue(student.getAge());
}
return wb;
}
}

前台的js代码如下：

Javascript代码


<script>
function exportExcel(){
location.href="excel/export";
<!--这里不能用ajax请求，ajax请求无法弹出下载保存对话框-->
}
</script>

摘抄：http://xafc2370.iteye.com/blog/1609183