Spring boot 上传文件以及解析Excel
最近工作忙,产品在推广阶段,市场那别的需求猛如虎,而且还使必须做的,基本上两天就要完成一个需求.压力大啊.其中就用到了解析Excel的东西和生成Excel的技术,当然这些东西以前用过,当再次用的时候发现自己忘了,看来知识还是需要记录的.下面就将这次用到的技术做一个记录,是希望可以帮到其他人.
我们公司用的是Spring boot 我就集成POI完成了这次任务,使用IEDA搭建Spring boot特别简单,网上一大把一大把.在这里就不介绍了.
一.Maven坐标
下面是需要的Maven 坐标
org.springframework.boot
spring-boot-starter
org.springframework.boot
spring-boot-starter-web
org.springframework.boot
spring-boot-starter-thymeleaf
org.springframework.boot
spring-boot-starter-test
test
org.apache.poi
poi
3.14
org.apache.poi
poi-ooxml
3.14
org.apache.poi
poi-ooxml-schemas
3.14
com.xiaoleilu
hutool-all
3.3.2
org.projectlombok
lombok
1.16.20
provided
com.google.code.gson
gson
2.8.2
以上是需要用到的maven坐标,并将每一个的依赖的作用加了注释.
二.文件的的上传
1.文件的上传的配置
/**
*
* 类说明
*
*
* @author Alemand
* @since 2018/3/19
*/
@Configuration
public class UploadFileProperties extends WebMvcConfigurerAdapter {
@Bean
public MultipartConfigElement multipartConfigElement() {
MultipartConfigFactory factory = new MultipartConfigFactory();
// 设置文件大小限制 ,超出设置页面会抛出异常信息，
// 这样在文件上传的地方就需要进行异常信息的处理了;
factory.setMaxFileSize("128MB"); // KB,MB
/// 设置总上传数据总大小
factory.setMaxRequestSize("256MB");
//设置文件路径
//factory.setLocation("");
return factory.createMultipartConfig();
}
}
文件上传示例
文件上传示例
3.Controller的编写
/**
*
* 类说明
*
*
* @author Alemand
* @since 2018/3/19
*/
@RestController
@RequestMapping("/resolve")
public class ResolveExcelController {
@Resource(name = "resolveExcelServiceImpl")
private ResolveExcelService resolveExcelService;
/**
* 文件上传
*/
@RequestMapping(value = "/upload", method = RequestMethod.POST)
@ResponseBody
public ApiResponse uploadExcel(@RequestParam("file") MultipartFile file) {
Object result;
try {
result = resolveExcelService.resolveExcel(file);
//如果需要将文件放到服务其中加以下代码
/* try {
BufferedOutputStream out = new BufferedOutputStream(
new FileOutputStream(new File(file.getOriginalFilename())));
out.write(file.getBytes());
out.flush();
out.close();
} catch (IOException e) {
e.printStackTrace();
}*/
} catch (BusinessException e) {
e.printStackTrace();
return ApiResponse.failOf(-1, e.getErrMsg());
}
return ApiResponse.successOf(result);
}
}4.Service层的编写要在Service解析Excel在这里我将解析到的数据封装到了一个对象
下面是我的对象字段
@Data
public class ReqImportClient {
@SerializedName("userName")
@Expose
private String userName;
@SerializedName("loginName")
@Expose
private String loginName;
@SerializedName("password")
@Expose
private String password;
@SerializedName("groupID")
@Expose
private String groupID;
}
@Service("resolveExcelServiceImpl")
public class ResolveExcelServiceImpl implements ResolveExcelService {
/**
*打印日志
*/
private static final Log logger = LogFactory.get();
/**
* 注册url
*/
private static final String SUFFIX_2003 = ".xls";
private static final String SUFFIX_2007 = ".xlsx";
/**
* 电话的正则
*/
public static final String PHONE_NUMBER_REG = "^(13[0-9]|14[579]|15[0-3,5-9]|16[6]|17[01356789]|18[0-9]|19[89])\\d{8}$";
/**
* 密码长度
*/
public static final int passWardLength = 6;
@Override
public List resolveExcel(MultipartFile file) throws BusinessException {
List list = new ArrayList<>();
if (file == null) {
throw new BusinessException(ReturnCode.CODE_FAIL, "对象不能为空");
}
//获取文件的名字
String originalFilename = file.getOriginalFilename();
Workbook workbook = null;
try {
if (originalFilename.endsWith(SUFFIX_2003)) {
workbook = new HSSFWorkbook(file.getInputStream());
} else if (originalFilename.endsWith(SUFFIX_2007)) {
workbook = new XSSFWorkbook(file.getInputStream());
}
} catch (Exception e) {
logger.info(originalFilename);
e.printStackTrace();
throw new BusinessException(ReturnCode.CODE_FAIL, "格式错误");
}
if (workbook == null) {
logger.info(originalFilename);
throw new BusinessException(ReturnCode.CODE_FAIL, "格式错误");
} else {
//获取所有的工作表的的数量
int numOfSheet = workbook.getNumberOfSheets();
//遍历这个这些表
for (int i = 0; i < numOfSheet; i++) {
//获取一个sheet也就是一个工作簿
Sheet sheet = workbook.getSheetAt(i);
int lastRowNum = sheet.getLastRowNum();
//从第一行开始第一行一般是标题
for (int j = 1; j <= lastRowNum; j++) {
Row row = sheet.getRow(j);
ReqImportClient reqImportClient = new ReqImportClient();
//获取电话单元格
if (row.getCell(0) != null) {
row.getCell(0).setCellType(Cell.CELL_TYPE_STRING);
String longName = row.getCell(0).getStringCellValue();
//todo 正则比对
boolean matche = Pattern.matches(PHONE_NUMBER_REG, longName);
if (!matche) {
throw new BusinessException(ReturnCode.CODE_FAIL, "电话格式错误");
}
reqImportClient.setLoginName(longName);
}
//密码
if (row.getCell(1) != null) {
row.getCell(1).setCellType(Cell.CELL_TYPE_STRING);
String passWard = row.getCell(1).getStringCellValue();
if (passWard.replace("", "").length() < passWardLength) {//校验密码长度
throw new BusinessException(ReturnCode.CODE_FAIL, "密码的格式有误");
}
reqImportClient.setPassword(passWard);
}
//姓名
if (row.getCell(2) != null) {
row.getCell(2).setCellType(Cell.CELL_TYPE_STRING);
String userName = row.getCell(2).getStringCellValue();
reqImportClient.setUserName(userName);
}
if (row.getCell(3) != null) {
row.getCell(3).setCellType(Cell.CELL_TYPE_STRING);
String groupID = row.getCell(3).getStringCellValue();
reqImportClient.setGroupID(groupID);
}
list.add(reqImportClient);
}
}
}
return list;
}
} 这样就将Excel解析完了,其实学会了是比较简单的.没有技术难度的.
最后附上Demo的地址gitHub