本人用的是springboot+gradle
话不多说，直接上干货：
package com.gpt.web.front.controller.content;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.gpt.common.core.domain.AjaxResult;
import com.gpt.common.utils.SnowFlakeUtil;
import com.gpt.manage.domain.QCategorize;
import com.gpt.manage.domain.QConversation;
import com.gpt.manage.domain.QTemplate;
import com.gpt.manage.service.QCategorizeService;
import com.gpt.manage.service.QConversationService;
import com.gpt.manage.service.QTemplateService;
import com.gpt.web.front.utils.ImportExcelUtil;
import io.swagger.annotations.Api;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
@Api(tags = {
"导入数据库模板信息"})
@RestController
@RequestMapping("/importSql")
@Slf4j
public class ImportSqlController {
/**
* 导入数据库模板
*
* @author wangjj
* @version 1.0
* @date 2023/3/17 14:42
*/
@Autowired
private QTemplateService templateService;
@Autowired
private QCategorizeService categorizeService;
@PostMapping(value = "/excelToSql")
public AjaxResult excelProTbZbzs(@RequestParam("file") MultipartFile file) {
List<QTemplate> template = new ArrayList<>();
try {
//验证文件类型
if (!file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf(".")).equals(".xls") && !file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf(".")).equals(".xlsx")) {
AjaxResult.error("mete", "文件类型有误！请上传Excle文件");
throw new Exception("文件类型有误！请上传Excle文件");
}
//获取数据
List<List<Object>> olist = ImportExcelUtil.getListByExcel(file.getInputStream(), file.getOriginalFilename());
//封装数据
for (int i = 0; i < olist.size(); i++) {
List<Object> list = olist.get(i);
if (list.get(0) == "" || ("序号").equals(list.get(0))) {
continue;
}
QTemplate t = new QTemplate();
//标题
if (String.valueOf(list.get(0)) == null || String.valueOf(list.get(0)).equals("")) {
AjaxResult.error("TemplateTitle", "标题不能为空");
throw new Exception("标题不能为空");
}
t.setTemplateTitle(String.valueOf(list.get(0)));
//内容
if (String.valueOf(list.get(1)) == null || String.valueOf(list.get(1)).equals("")) {
AjaxResult.error("mete", "内容不能为空");
throw new Exception("TemplateContent不能为空");
}
t.setTemplateContent(String.valueOf(list.get(1)));
//分类id
if (StringUtils.isNotEmpty(String.valueOf(list.get(2)))) {
QCategorize categorize = categorizeService.getOne(new LambdaQueryWrapper<QCategorize>().eq(QCategorize::getName, String.valueOf(list.get(2))));
if (categorize != null) {
t.setCategorizeId(categorize.getId());
}
}
//分类内容
if (String.valueOf(list.get(2)) == null || String.valueOf(list.get(2)).equals("")) {
AjaxResult.error("Categorize", "分类内容不能为空");
throw new Exception("分类内容不能为空");
}
t.setCategorize(String.valueOf(list.get(2)));
t.setGrade(Integer.parseInt(String.valueOf(list.get(3))));
t.setCreateDate(new Date());
t.setUpdateDate(new Date());
template.add(t);
}
templateService.insertListInfo(template);
} catch (Exception e) {
e.printStackTrace();
}
return AjaxResult.success("插入数据库成功");
}
}
工具类如下：
package com.gpt.web.front.utils;
import org.apache.poi.hssf.usermodel.HSSFDateUtil;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import java.io.IOException;
import java.io.InputStream;
import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;
/**
* 新增值班排班表导入Excel表工具类
* zyw
*/
public class ImportExcelUtil {
private final static String excel2003L = ".xls"; //2003- 版本的excel
private final static String excel2007U = ".xlsx"; //2007+ 版本的excel
/**
* 描述：获取IO流中的数据，组装成List<List<Object>>对象
*
* @param in,fileName
* @return
* @throws Exception
*/
public static List<List<Object>> getListByExcel(InputStream in, String fileName) throws Exception {
List<List<Object>> list = null;
//创建Excel工作薄
Workbook work = ImportExcelUtil.getWorkbook(in, fileName);
if (null == work) {
throw new Exception("创建Excel工作薄为空！");
}
Sheet sheet = null;
Row row = null;
Cell cell = null;
list = new ArrayList<List<Object>>();
//遍历Excel中所有的sheet
for (int i = 0; i < work.getNumberOfSheets(); i++) {
sheet = work.getSheetAt(i);
if (sheet == null) {
continue;
}
//遍历当前sheet中的所有行
for (int j = sheet.getFirstRowNum(); j < sheet.getLastRowNum() + 1; j++) {
row = sheet.getRow(j);
if (row == null || row.getFirstCellNum() == j) {
continue;
}
//遍历所有的列
List<Object> li = new ArrayList<Object>();
for (int y = row.getFirstCellNum(); y < row.getLastCellNum(); y++) {
cell = row.getCell(y);
li.add(ImportExcelUtil.getCellValue(cell));
}
list.add(li);
}
}
// work.close();
return list;
}
/**
* 描述：根据文件后缀，自适应上传文件的版本
*
* @param inStr,fileName
* @return
* @throws Exception
*/
public static Workbook getWorkbook(InputStream inStr, String fileName) throws Exception {
Workbook wb = null;
String fileType = fileName.substring(fileName.lastIndexOf("."));
if (excel2003L.equals(fileType)) {
wb = new HSSFWorkbook(inStr); //2003-
} else if (excel2007U.equals(fileType)) {
wb = new XSSFWorkbook(inStr); //2007+
} else {
throw new Exception("解析的文件格式有误！");
}
return wb;
}
/**
* 描述：对表格中数值进行格式化
*
* @param cell
* @return
*/
public static Object getCellValue(Cell cell) {
Object val = null;
DecimalFormat df = new DecimalFormat("0"); //格式化number String字符
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
// SimpleDateFormat sdf = new SimpleDateFormat("yyy-MM-dd"); //日期格式化
// DecimalFormat df2 = new DecimalFormat("0.00"); //格式化数字
if (cell != null) {
if (cell.getCellTypeEnum() == CellType.NUMERIC || cell.getCellTypeEnum() == CellType.FORMULA) {
val = cell.getNumericCellValue();
if (HSSFDateUtil.isCellDateFormatted(cell)) {
val = DateUtil.getJavaDate((Double) val); // POI Excel 日期格式转换
} else {
if ((Double) val % 1 > 0) {
val = new BigDecimal(val.toString());
} else {
val = new DecimalFormat("0").format(val);
}
}
} else if (cell.getCellTypeEnum() == CellType.STRING) {
val = cell.getStringCellValue();
} else if (cell.getCellTypeEnum() == CellType.BOOLEAN) {
val = cell.getBooleanCellValue();
} else if (cell.getCellTypeEnum() == CellType.ERROR) {
val = cell.getErrorCellValue();
}
// switch (cell.getCellType()) {
// case Cell.CELL_TYPE_STRING:
// value = cell.getRichStringCellValue().getString();
// break;
// case Cell.CELL_TYPE_NUMERIC:
// if("General".equals(cell.getCellStyle().getDataFormatString())){
// value = df.format(cell.getNumericCellValue());
// }
// else if("m/d/yy".equals(cell.getCellStyle().getDataFormatString())){
// value = sdf.format(cell.getDateCellValue());
// }
// else{
// value = sdf.format(cell.getDateCellValue());
// }
// break;
// case Cell.CELL_TYPE_BOOLEAN:
// value = cell.getBooleanCellValue();
// break;
// case Cell.CELL_TYPE_BLANK:
// value = "";
// break;
// default:
// break;
// }
}
return val;
}
}
注意：需要导入POI需要的包
compile group: 'org.apache.poi', name: 'poi-ooxml', version: '3.17'