IDE：IDEA

编程语言：JAVA

controller 类

业务处理类

model 类

Controller

import com.你的路径.ImportTaskExcel;

import org.springframework.stereotype.Service;

import org.springframework.web.bind.annotation.*;

import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import java.io.IOException;

import java.io.InputStream;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

@RestController

@CrossOrigin

@Service

public class ProjectTaskExcelController {

//从表格导入任务;

//先将excel解析为json，然后将json数据进行处理，保存到数据库

@RequestMapping(value = "/import_excel_task",headers = "content-type=multipart/*", method = RequestMethod.POST)

@ResponseBody

public Map importExcel(HttpServletRequest request, HttpServletResponse response, @RequestParam MultipartFile file) throws IOException {

String originalFilename = file.getOriginalFilename();

String type = file.getContentType();

System.out.println("目标文件名称：" + originalFilename + ",目标文件类型：" + type);

InputStream is = file.getInputStream();

ImportTaskExcel importExcel = new ImportTaskExcel();

List list= importExcel.importDataFromExcel( is, originalFilename);

for(int i = 0;i

System.out.println(list.get(i).toString());

}

Map map = new HashMap<>();

map.put("list", list);

map.put("code", 0);

return map;

}

}

业务处理类

```

import org.apache.poi.hssf.usermodel.HSSFWorkbook;

import org.apache.poi.ss.usermodel.Cell;

import org.apache.poi.ss.usermodel.Row;

import org.apache.poi.ss.usermodel.Sheet;

import org.apache.poi.ss.usermodel.Workbook;

import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import java.io.IOException;

import java.io.InputStream;

import java.lang.reflect.Field;

import java.lang.reflect.Method;

import java.util.ArrayList;

import java.util.List;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

public class ImportTaskExcel {

private static final Logger logger = LoggerFactory.getLogger("ImportTaskExcel");

/**

* @Title: createWorkbook

* @Description: 判断excel文件后缀名，生成不同的workbook * @param @param is

* @param @param excelFileName

* @param @return

* @param @throws IOException

* @return Workbook

* @throws

*/

public Workbook createWorkbook(InputStream is, String excelFileName) throws IOException {

if (excelFileName.endsWith(".xls")) {

return new HSSFWorkbook(is);

}else if (excelFileName.endsWith(".xlsx")) {

return new XSSFWorkbook(is);

}

return null;

}

/**

* @Title: getSheet

* @Description: 根据sheet索引号获取对应的sheet

* @param @param workbook

* @param @param sheetIndex

* @param @return

* @return Sheet

* @throws

*/

public Sheet getSheet(Workbook workbook, int sheetIndex){

return workbook.getSheetAt(0);

}

public List importDataFromExcel(InputStream is, String excelFileName){

List list = new ArrayList();

try {

//创建工作簿

Workbook workbook = this.createWorkbook(is, excelFileName);

//创建工作表sheet

Sheet sheet = this.getSheet(workbook, 0);

//获取sheet中数据的行数

int rows = sheet.getPhysicalNumberOfRows();

//获取表头单元格个数

int cells = sheet.getRow(0).getPhysicalNumberOfCells();

if(cells > 8) {

cells = 8;

}

for (int i = 1; i < rows; i++) {//第一行为标题栏，从第二行开始取数据

//利用反射，给JavaBean的属性进行赋值

ExcelTaskRow vo = new ExcelTaskRow();

Field[] fields = vo.getClass().getDeclaredFields();

Row row = sheet.getRow(i);

int index = 0;

while (index < cells) {

Cell cell = row.getCell(index);