1.导入包
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.11-beta1</version>
</dependency>
2.mapper映射文件批量插入
<insert id="insertStudentlist" parameterType="java.util.List">
insert into student_table(studentname, studenage, studentsex) values
<foreach collection="list" index="index" item="item" separator=",">
(#{item.studentname,jdbcType=VARCHAR}, #{item.studenage,jdbcType=VARCHAR}, #{item.studentsex,jdbcType=VARCHAR})
</foreach>
</insert>
3.dao层
//批量添加学生信息
public int insertStudentlist(List<User>userlist);
4.service层
public int insertStudentlist(List<User> userlist) ;
5.实现service层
public int insertStudentlist(List<User> userlist) {
// TODO Auto-generated method stub
int count=Userdao.insertStudentlist(userlist);
return count;
}
6.controller
@RequestMapping(value="/fileUpload")
public String fileUpload(@RequestParam("file") MutipartFile file)throws IOException,InvalidFormatException{
if(!file.isEmpty()){ //判断文件是否为空
try{
//文件保存路径 file.getOriginaFilename()获取原上传文件的名称
String file = request.getSession().getServletContext().getRealPath("/")+"upload"+file.getOriginaFilename();
file.transferTo(new File(filePath));
File f1 = new File(filePath.replace("\",''/"));
String jsonstr = ExcelTool.readExcel(f1).toString();
List<User> userlist = JSON.parseArray(jsonstr.User.class);
Integer order;
for(int i = 0;i<userlist.size();i++){
order = i+1;
userlist.get(i).setOrder(order.toString());
if(userlist.get(i).getStudentsex().equals("男")){
userlist.get(i).setStudentsex("1")
}else{
userlist.get(i).setStudentsex("2")
}
}
userService.insertStudentlist(userlist);
}catch(Exception e){
e.printStackTrace();
}
}
return "redirect:/index.jsp";
}
public static JSONArray readExcel(File file) throws FileNotFoundException, IOException, InvalidFormatException{
int res = checkFile(file);
if (res == 0) {
throw new NullPointerException("the file is null.");
}else if (res == 1) {
return readXLSX(file);
}else if (res == 2) {
return readXLS(file);
}
throw new IllegalAccessError("the file["+file.getName()+"] is not excel file.");
}
public static int checkFile(File file){
if (file==null) {
return 0;
}
String flieName = file.getName();
if (flieName.endsWith(XLSX)) {
return 1;
}
if (flieName.endsWith(XLS)) {
return 2;
}
return 3;
}
public static JSONArray readXLSX(File file) throws InvalidFormatException, IOException{
Workbook book = new XSSFWorkbook(file); //得到文档对象,用xssf对象来解析xlsx文件
Sheet sheet = book.getSheetAt(0); //获取第一个表单
return read(sheet, book);
}
public static JSONArray readXLS(File file) throws FileNotFoundException, IOException{
POIFSFileSystem poifsFileSystem = new POIFSFileSystem(new FileInputStream(file));
Workbook book = new HSSFWorkbook(poifsFileSystem); //用Hssf来解析xls格式的文件
Sheet sheet = book.getSheetAt(0);
return read(sheet, book);
}
public static JSONArray read(Sheet sheet,Workbook book) throws IOException{
int rowStart = sheet.getFirstRowNum(); // 首行下标
int rowEnd = sheet.getLastRowNum(); // 尾行下标
// 如果首行与尾行相同,表明只有名称,直接返回空数组
if (rowStart == rowEnd) {
book.close();
return new JSONArray();
}
// 获取第一行JSON对象?
Row firstRow = sheet.getRow(rowStart);
int cellStart = firstRow.getFirstCellNum();
int cellEnd = firstRow.getLastCellNum();
Map<Integer, String> keyMap = new HashMap<Integer, String>();
for (int j = cellStart; j < cellEnd; j++) {
keyMap.put(j,getValue(firstRow.getCell(j), rowStart, j, book, true));
}
// 获取每行JSON对象
JSONArray array = new JSONArray();
for(int i = rowStart+1; i <= rowEnd ; i++) {
Row eachRow = sheet.getRow(i);
JSONObject obj = new JSONObject();
StringBuffer sb = new StringBuffer();
for (int k = cellStart; k < cellEnd; k++) {
if (eachRow != null) {
String val = getValue(eachRow.getCell(k), i, k, book, false);
sb.append(val);
obj.put(keyMap.get(k),val);
}
}
if (sb.toString().length() > 0) {
array.add(obj);
}
}
book.close();
return array;
}
public static String getValue(Cell cell,int rowNum,int index,Workbook book,boolean isKey) throws IOException{
// 空白或空
if (cell == null || cell.getCellType()==Cell.CELL_TYPE_BLANK ) {
if (isKey) {
book.close();
throw new NullPointerException(String.format("the key on row %s index %s is null ", ++rowNum,++index));
}else{
return "";
}
}
// 0. 数字 类型
if (cell.getCellType() == Cell.CELL_TYPE_NUMERIC) {
if (HSSFDateUtil.isCellDateFormatted(cell)) {
Date date = cell.getDateCellValue();
DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
return df.format(date);
}
String val = cell.getNumericCellValue()+"";
val = val.toUpperCase();
if (val.contains("E")) {
val = val.split("E")[0].replace(".", "");
}
return val;
}
// 1. String类型
if (cell.getCellType() == Cell.CELL_TYPE_STRING) {
String val = cell.getStringCellValue();
if (val == null || val.trim().length()==0) {
if (book != null) {
book.close();
}
return "";
}
return val.trim();
}
// 2. 公式 CELL_TYPE_FORMULA
if (cell.getCellType() == Cell.CELL_TYPE_FORMULA) {
return cell.getStringCellValue();
}
// 4. 布尔类型CELL_TYPE_BOOLEAN
if (cell.getCellType() == Cell.CELL_TYPE_BOOLEAN) {
return cell.getBooleanCellValue()+"";
}
// 5. 错误 CELL_TYPE_ERROR
return "";
}
model:
private String studentname;
private String studentsex;
private String studenage;
priavte String order;