jsp利用pol通过servlet来实现Excel导入数据库

第一步需要的架包：



第二步，选择要导入的文件并上传到指定位置，需要用到问文件上传的包jspsmartupload.jar，

html代码略；

上传文件的代码（在servlet中）：

public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

response.setCharacterEncoding("utf-8");
String type = request.getParameter("type");
/*
*进行文件的上传：
*/
if (type.equals("excToMqsql")) {
delStaffInfo();
SmartUpload su = new SmartUpload();
su.initialize(this.getServletConfig(), request, response);
// 设定允许上传的文件（通过扩展名限制）
su.setAllowedFilesList("xls,xlsx");
try {
su.upload();
Files files = su.getFiles();
String temp = "";
String str = "";
for (int i = 0; i < files.getCount(); i++) {
File file = files.getFile(i);
/*
* 通过获取文件的后缀来设定不同的文件类型
* str = file.getFileExt();
* System.out.println(str); if ("xls".equals(str)) {
*
* temp = "/upload/staff.xls"; } else { temp =
* "/upload/staff.xls"; }
*/
temp = "/upload/sub_staff.xls";
file.saveAs(temp, SmartUpload.SAVE_VIRTUAL);
}
System.out.println("上传成功!");
**//调用读取文件的方法;**
InSub es = new InSub();
es.getDate(request, response);
} catch (SmartUploadException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

第三步:对上传的文件进行读取:

次方法无论你上传的Excel文件的格式是xls还是xlsx,都可以读取到其中的信息

private void getDate(HttpServletRequest request,
HttpServletResponse response) {
// TODO Auto-generated method stub
String errMessage = null;
boolean flags = false;
staffBean staff = new staffBean();
try {
java.io.File f = new java.io.File(request.getSession()
.getServletContext().getRealPath("")
+ "\\upload\\sub_staff.xls");
//
InputStream is = new FileInputStream(f);
Workbook wb = WorkbookFactory.create(is);

for (int i = 0, len = wb.getNumberOfSheets(); i < len; i++) {
Sheet sheet = wb.getSheetAt(i);
for (int j = 1; j <= sheet.getLastRowNum(); j++) {// 令i=1表示除去标题一行
if (sheet == null) {
return;
}
Row row = sheet.getRow(j);
if (row == null) {
return;
}
// 读取每一个单元格
for (int k = 0; k < row.getLastCellNum(); k++) {
Cell cell = row.getCell(k);
if (cell == null) {
return;
}
if (k == 0)//
{
String str = getValue(cell);
staff.setName(str);
//System.out.println(str);
continue;
}
if (k == 1) {
// staff.setIdcard(getValue(cell));
String str = getValue(cell);
staff.setIdcard(str);
//System.out.println(str);
continue;
}
}
// System.out.println("-------------");
// 导入数据
flags = getStaffInfo(staff);
}
System.out.println(flags);
//此处为导入成功的一个跳转
if (flags) {
System.out.println("Excel表导入成功!");
response.sendRedirect("CompareServlet?type=showsub");

} else {
System.out.println("Excel表未导入成功!");
errMessage = "导入Excel表未成功,请重新导入！";
request.setAttribute("error", errMessage);
request.getRequestDispatcher("../tips.jsp").forward(
request, response);
}
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

//**获取单元格值得方法**
public void init() throws ServletException {
// Put your code here
}

private String getValue(Cell cell) {
String result = "";

switch (cell.getCellType()) {
case Cell.CELL_TYPE_BOOLEAN:
result = cell.getBooleanCellValue() + "";
break;
case Cell.CELL_TYPE_STRING:
result = cell.getStringCellValue();
break;
case Cell.CELL_TYPE_FORMULA:
result = cell.getCellFormula();
break;
case Cell.CELL_TYPE_NUMERIC:
// 可能是普通数字，也可能是日期
if (HSSFDateUtil.isCellDateFormatted(cell)) {
result = DateUtil.getJavaDate(cell.getNumericCellValue())
.toString();
} else {
result = cell.getNumericCellValue() + "";
}
break;
}
return result;
}

第四步,sql语句的添加元素的方法:

public boolean getStaffInfo(staffBean staff) {
boolean flag = false;
Connection conn = null;
PreparedStatement pt = null;
ResultSet rs = null;
String sql = "insert into sub_staff(name,idcard) values (?,?)";
jdbcDtiver jdbc = new jdbcDtiver();//创建数据库的连接
conn = jdbc.Driver();
try {
pt = conn.prepareStatement(sql);
pt.setString(1, staff.getName());
pt.setString(2, staff.getIdcard());
int n = pt.executeUpdate();
if (n > 0) {
flag = true;
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
try {
conn.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return flag;
}

以上就是jsp利用架包实现Excel数据导入到MySQL数据中的步骤及代码,希望对大家有所帮助