上传Excel并解析

该篇博客废除，见解析excel工具类

兼容2007和2003两种类型的文件，举例：这里模板有两个页脚：

                         

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import org.apache.poi.POIXMLDocument;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.openxml4j.opc.OPCPackage;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
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 org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.*;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.util.*;

 

 /**
     * 选择列表导入方式
     * 文件上传
     * 上传并解析出字段，解析后新增
     * 上传文件字段upfile
     * userGroupName 用户群名称
     * appName 应用名称
     */
    @PostMapping("/upload")
    public Result upload(@RequestParam("file") MultipartFile[]  files,@RequestParam String userGroupName,@RequestParam String applicationName
            , HttpSession session) throws IllegalStateException, IOException{
        UserGroup userGroup = new UserGroup();
        userGroup.setUserGroupName(userGroupName);
        userGroup.setApplicationName(applicationName);
        UapUser uapUser = (UapUser)session.getAttribute("USER");
        if (null != uapUser) {
            userGroup.setCreationBy(uapUser.getLoginName());
        }
        System.out.println("***文件上传***");
        MultipartFile excelFile = null;
        if(files!=null && files.length>0){
            excelFile = files[0];
        }else{
            return ResultGenerator.genCostomFailResult(ResultCode.DELETE_FAIL_ERROR, "没有上传文件");

        }

        System.out.println("***解析excel上传至从表***");
        //解析出的用户id 或mac地址 集合
        List idlist = new ArrayList();
        List maclist = new ArrayList();
        String fileType = "";
        try {
            String fileName = excelFile.getOriginalFilename();
            fileType = fileName.substring(fileName.lastIndexOf(".") + 1,
                    fileName.length());
            System.out.print("文件类型为"+fileType);
        } catch (Exception e) {

            fileType = "";
        }
        if (!fileType.toLowerCase().equals("xls")  && !fileType.toLowerCase().equals("xlsx")) {
            System.out.print("格式不支持");
            return ResultGenerator.genCostomFailResult(ResultCode.DELETE_FAIL_ERROR, "不支持的文件类型");

        }

        //XSSF
        if("xlsx".equals(fileType)  || "xls".equals(fileType)){
            System.out.println("开始解析"+fileType);
            Workbook wb = null;

            InputStream inp = excelFile.getInputStream();
            try {

                if(! inp.markSupported()) {
                    inp = new PushbackInputStream(inp, 8);
                }

                if(POIFSFileSystem.hasPOIFSHeader(inp)) {
                   wb = new HSSFWorkbook(inp);
                }else if(POIXMLDocument.hasOOXMLHeader(inp)) {
                   wb =  new XSSFWorkbook(OPCPackage.open(inp));
                }

                if (null == wb){
                    return ResultGenerator.genCostomFailResult(ResultCode.ADD_FAIL_ERROR,
                            "导入失败!");

                }
                Sheet macSheet = wb.getSheetAt(0);//mac地址
                Sheet idSheet = wb.getSheetAt(1);//用户id
                String mac = wb.getSheetName(0);// mac地址  Sheet1



                /*  String id = wb.getSheetName(1);//用户id  Sheet2*/
              //解析mac地址
                System.out.println("解析mac地址"+mac);
                for (int i = macSheet.getFirstRowNum()+1; i <= macSheet.getLastRowNum(); i++) {
                    Row row = macSheet.getRow(i);
                    Iterator cells = row.cellIterator();
                    while (cells.hasNext()) {
                        Cell cell = (Cell) cells.next();
                        String str = cell.getStringCellValue();
                        System.out.print(" " + str);
                        maclist.add(str);
                    }
                }
                //解析用户id
                System.out.println("解析id地址");
                for (int i = idSheet.getFirstRowNum()+1; i <= idSheet.getLastRowNum(); i++) {
                    Row row = idSheet.getRow(i);
                    Iterator cells = row.cellIterator();
                    while (cells.hasNext()) {
                      Cell cell = (Cell) cells.next();  //用户Id可能为字符串也可能为纯数字，不确定
                        cell.setCellType(Cell.CELL_TYPE_STRING);
                        String str = cell.getStringCellValue();
                        System.out.println("内容"+cell.toString());
                        /*Cell cell = (Cell) cells.next();
                        String str = cell.getStringCellValue();
                        System.out.print(" " + str);*/
                        idlist.add(str);
                    }
                }


            } catch (Exception e) {
                System.out.print(e);
              //  return ResultGenerator.genCostomFailResult(ResultCode.ADD_FAIL_ERROR, "新增失败");
                // BusinessServiceException("未知原因！保存Excel文件时，请不要将鼠标最终定位在Excel中的可以下拉选值的列上。");
            }
        }




        System.out.println("用户id列表 "+idlist);
        System.out.print("mac列表 "+maclist);
        userGroup.setUserIdList(idlist);
        userGroup.setMacList(maclist);
      UserGroup dealUserGroup = userGroupService.dealExcelImportUserGroup(userGroup);
      if(dealUserGroup==null){
          return ResultGenerator.genCostomFailResult(ResultCode.ADD_FAIL_ERROR, "新增失败，应用名称不存在");

      }
        int a = userGroupService.addEcxelImportUserGroup(dealUserGroup);
      if(a==-2){
          return ResultGenerator.genCostomFailResult(ResultCode.ADD_FAIL_ERROR, "新增失败，该用户群名称已存在");

      }else  if (a <= 0) {
            return ResultGenerator.genCostomFailResult(ResultCode.ADD_FAIL_ERROR, "新增失败");
        }
        return ResultGenerator.genSuccessResult("添加成功");
    }