參考位址: http://www.cnblogs.com/bmbm/archive/2011/12/08/2342261.html
感謝這位大神
1.首先下載下傳poi-3.6-20091214.jar,下載下傳位址如下:
http://download.csdn.net/detail/evangel_z/38950512.Student.java
import java.util.Date;
public class Student
{
private int id;
private String name;
private int age;
private Date birth;
public Student()
}
public Student(int id, String name, int age, Date birth)
this.id = id;
this.name = name;
this.age = age;
this.birth = birth;
public int getId()
return id;
public void setId(int id)
public String getName()
return name;
public void setName(String name)
public int getAge()
return age;
public void setAge(int age)
public Date getBirth()
return birth;
public void setBirth(Date birth)
3.CreateSimpleExcelToDisk.java
import java.io.FileOutputStream;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
public class CreateSimpleExcelToDisk
/**
- @功能:手工建構一個簡單格式的Excel
*/
private static List getStudent() throws Exception
List list = new ArrayList();
SimpleDateFormat df = new SimpleDateFormat("yyyy-mm-dd");
Student user1 = new Student(1, "張三", 16, df.parse("1997-03-12"));
Student user2 = new Student(2, "李四", 17, df.parse("1996-08-12"));
Student user3 = new Student(3, "王五", 26, df.parse("1985-11-12"));
list.add(user1);
list.add(user2);
list.add(user3);
return list;
public static void main(String[] args) throws Exception
// 第一步,建立一個webbook,對應一個Excel檔案
HSSFWorkbook wb = new HSSFWorkbook();
// 第二步,在webbook中添加一個sheet,對應Excel檔案中的sheet
HSSFSheet sheet = wb.createSheet("學生表一");
// 第三步,在sheet中添加表頭第0行,注意老版本poi對Excel的行數列數有限制short
HSSFRow row = sheet.createRow((int) 0);
// 第四步,建立單元格,并設定值表頭 設定表頭居中
HSSFCellStyle style = wb.createCellStyle();
style.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 建立一個居中格式
HSSFCell cell = row.createCell((short) 0);
cell.setCellValue("學号");
cell.setCellStyle(style);
cell = row.createCell((short) 1);
cell.setCellValue("姓名");
cell = row.createCell((short) 2);
cell.setCellValue("年齡");
cell = row.createCell((short) 3);
cell.setCellValue("生日");
// 第五步,寫入實體資料 實際應用中這些資料從資料庫得到,
List list = CreateSimpleExcelToDisk.getStudent();
for (int i = 0; i < list.size(); i++)
row = sheet.createRow((int) i + 1);
Student stu = (Student) list.get(i);
// 第四步,建立單元格,并設定值
row.createCell((short) 0).setCellValue((double) stu.getId());
row.createCell((short) 1).setCellValue(stu.getName());
row.createCell((short) 2).setCellValue((double) stu.getAge());
cell.setCellValue(new SimpleDateFormat("yyyy-mm-dd").format(stu
.getBirth()));
// 第六步,将檔案存到指定位置
try
FileOutputStream fout = new FileOutputStream("E:/students.xls");
wb.write(fout);
fout.close();
catch (Exception e)
e.printStackTrace();
-------------------------我是華麗的分割線------------------------------
下面實作下載下傳功能:
HttpServletResponse response = ServletActionContext.getResponse();
File file = new File(path);// path是根據日志路徑和檔案名拼接出來的
String filename = file.getName();// 擷取日志檔案名稱
InputStream fis = new BufferedInputStream(new FileInputStream(path));
byte[] buffer = new byte[fis.available()];
fis.read(buffer);
fis.close();
response.reset();
// 先去掉檔案名稱中的空格,然後轉換編碼格式為utf-8,保證不出現亂碼,這個檔案名稱用于浏覽器的下載下傳框中自動顯示的檔案名
response.addHeader("Content-Disposition", "attachment;filename=" + new String(filename.replaceAll(" ", "").getBytes("utf-8"),"iso8859-1"));
response.addHeader("Content-Length", "" + file.length());
OutputStream os = new BufferedOutputStream(response.getOutputStream());
response.setContentType("application/octet-stream");
os.write(buffer);// 輸出檔案
os.flush();
os.close();