1.在pom.xml文件中导入注解，主要利用POI
<dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>3.9</version> </dependency> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.1</version> </dependency> <dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.4</version> </dependency>
2.Controller接口
@PostMapping("/save")
public String addUser(@RequestParam("file") MultipartFile file) {
String fileName = file.getOriginalFilename();
try {
return sysService.batchImport(fileName, file);
} catch (MyException e) {
e.printStackTrace();
return e.getMessage();
}catch(Exception e){
e.printStackTrace();
return "文件异常,导入失败";
}
}3.服务层接口
boolean import(String fileName, MultipartFile file) throws Exception;
4.业务层实现类
@Transactional(readOnly = false,rollbackFor = Exception.class)
@Override
public boolean import(String fileName, MultipartFile file) throws Exception {
Map<String, Integer> departmentMap = findDepartment();
Map<String, Integer> roleMap = findRole();
boolean notNull = false;
List<User> userList = new ArrayList<User>();
if (!fileName.matches("^.+\\.(?i)(xls)$") && !fileName.matches("^.+\\.(?i)(xlsx)$")) {
throw new MyException("上传文件格式不正确");
}
boolean isExcel2003 = true;
if (fileName.matches("^.+\\.(?i)(xlsx)$")) {
isExcel2003 = false;
}
InputStream is = file.getInputStream();
Workbook wb = null;
if (isExcel2003) {
wb = new HSSFWorkbook(is);
} else {
wb = new XSSFWorkbook(is);
}
Sheet sheet = wb.getSheetAt(0);
if(sheet!=null){
notNull = true;
}
User user;
for (int r = 1; r <= sheet.getLastRowNum(); r++) {
Row row = sheet.getRow(r);
if (row == null){
continue;
}
user = new User();
if( row.getCell(0).getCellType() !=1){
throw new MyException("导入失败(第"+(r+1)+"行,ID单元格格式请设为文本格式)");
}
String id = row.getCell(0).getStringCellValue();
if(id==null || id.isEmpty()){
throw new MyException("导入失败(第"+(r+1)+"行,ID未填写)");
}
String name = row.getCell(1).getStringCellValue();
if(name==null || name.isEmpty()){
throw new MyException("导入失败(第"+(r+1)+"行,姓名未填写)");
}
String department = row.getCell(2).getStringCellValue();
if(departmentMap.get(department)==null){
throw new MyException("导入失败(第"+(r+1)+"行,不存在此单位或单位未填写)");
}
String role = row.getCell(3).getStringCellValue();
if(roleMap.get(role)==null){
throw new MyException("导入失败(第"+(r+1)+"行,不存在此角色或角色未填写)");
}
Date date;
if(row.getCell(4).getCellType() !=0){
throw new MyException("导入失败(第"+(r+1)+"行,入职日期格式不正确或未填写)");
}else{
date = row.getCell(4).getDateCellValue();
}
user.setId(id);
user.setName(name);
user.setDepartmentId((int) departmentMap.get(department));
user.setRoleId((int) roleMap.get(role));
user.setDate(date);
userList.add(user);
}
for (User user : userList) {
String id = user.getId();
int cnt = userMapper.selectById(id);
if (cnt == 0) {
userMapper.addUser(user);
} else {
userMapper.updateUserById(user);
}
}
return notNull;
}Das obige ist der detaillierte Inhalt vonWie lädt Springboot Excel hoch und importiert Tabellendaten in die MySQL-Datenbank oder aktualisiert diese?. Für weitere Informationen folgen Sie bitte anderen verwandten Artikeln auf der PHP chinesischen Website!
