Java：Excel文件上传至后台

之前的项目中有遇到上传Excel文件的需求，简单说就是解析一个固定格式的Excel表格，然后存到数据库对应的表中，表格如下：

项目采用SSM架构，mvc模式，显而易见，这个Excel表需要拆成两个表，分别存入数据库中，这种表会解析，那其他的应该就难不倒我们了。我自己写的java后台的相关解析代码如下。

注意Excel文件中每个单元格的格式要准确，否则可能解析错误，如果有更加简洁的方案，欢迎大家在留言评论区，相互学习，共同进步！

依赖文件主要是ExcelUtil，其他的直接用maven导入就好，ExcelUtil的路径:https://i.cnblogs.com/Files.aspx

package com.yuandi.car.platform.controller;

import java.io.ByteArrayInputStream;
import java.math.BigDecimal;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.text.SimpleDateFormat;

import org.apache.commons.lang.time.DateUtils;
import org.apache.poi.hssf.usermodel.HSSFFormulaEvaluator;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.FormulaEvaluator;
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.ss.usermodel.WorkbookFactory;
import org.apache.poi.xssf.usermodel.XSSFFormulaEvaluator;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;

import com.yuandi.car.common.bean.RestDataResult;
import com.yuandi.car.common.enums.ResponseEnum;
import com.yuandi.car.common.exception.ServiceException;
import com.yuandi.car.common.util.ExcelUtils;
import com.yuandi.car.common.util.UUIDutil;
import com.yuandi.car.platform.service.IManufactService;
import io.swagger.annotations.Api;
import java.util.UUID;

import com.yuandi.car.platform.dao.model.T301_merchant;
import com.yuandi.car.platform.dao.model.T701_car_order;
import com.yuandi.car.platform.dao.model.T701_car_order_ext;

@Controller
@RequestMapping("/order")
@Api(value = "order接口")
public class OrderController extends BaseController {

	private static Logger logger = LoggerFactory.getLogger(OrderController.class);

	@Autowired
	private IManufactService manufactService;

	@RequestMapping(value = "/uploadDeal", method = RequestMethod.POST)
	@ResponseBody
	public RestDataResult uploadDeal(@RequestParam("file") MultipartFile file) {
		RestDataResult result = new RestDataResult();
		try {
			if (validToken()) {
				String contentType = file.getContentType();
				String fileName = file.getOriginalFilename();
				Workbook wb = WorkbookFactory.create(new ByteArrayInputStream(file.getBytes()));
				Sheet sheet = wb.getSheetAt(0);
				Row row = null;

				FormulaEvaluator formulaEvaluator = null;
				if (fileName.endsWith("xlsx")) {
		            formulaEvaluator = new XSSFFormulaEvaluator((XSSFWorkbook) wb);
		        } else {
		            formulaEvaluator = new HSSFFormulaEvaluator((HSSFWorkbook) wb);
		        }
				T701_car_order order = new T701_car_order();
				String orderid  = UUIDutil.getUUID();
				order.setOrderid(orderid);
				//manufactService.addcarOrder(order);
				String ownerEntity  = null;
				String mertPhone  = null;
				boolean flag = false;
				for (int i = 1; i < 6; i++) { //i < sheet.getLastRowNum() - 0 + 1;
					row = sheet.getRow(i);
					if (null == row) {
						continue;
					}

					switch (i) {
					case 1:
						for (Cell c : row) {//循环单行的每一个空格
							String value = null;
							boolean isMerge = ExcelUtils.isMergedRegion(sheet, i, c.getColumnIndex());
							// 判断是否具有合并单元格
							if (isMerge) {
								value = ExcelUtils.getMergedRegionValue(sheet, row.getRowNum(), c.getColumnIndex());
							} else {
								value = ExcelUtils.getCellValueFormula(c, formulaEvaluator);
							}

							if (c.getColumnIndex() == 2) {

								order.setOwnerentity(value);
								ownerEntity = value;
								System.out.println("经销商法人姓名:" + value);
							} else if (c.getColumnIndex() == 5) {
								order.setMerchantphone(value);
								mertPhone  = value;
								System.out.println("联系电话:" + value);
							}
						}
						break;
					case 2:
						for (Cell c : row) {
							String value = null;
							boolean isMerge = ExcelUtils.isMergedRegion(sheet, i, c.getColumnIndex());
							// 判断是否具有合并单元格
							if (isMerge) {
								value = ExcelUtils.getMergedRegionValue(sheet, row.getRowNum(), c.getColumnIndex());
							} else {
								value = ExcelUtils.getCellValueFormula(c, formulaEvaluator);
							}

							if (c.getColumnIndex() == 2) {

								order.setManagername(value);
								System.out.println("公司分管经理:" + value);
							} else if (c.getColumnIndex() == 5) {
								order.setManagerphone(value);
								System.out.println("联系电话:" + value);
							}
						}
						break;
					case 3:
						for (Cell c : row) {
							String value = null;
							boolean isMerge = ExcelUtils.isMergedRegion(sheet, i, c.getColumnIndex());
							// 判断是否具有合并单元格
							if (isMerge) {
								value = ExcelUtils.getMergedRegionValue(sheet, row.getRowNum(), c.getColumnIndex());
							} else {
								value = ExcelUtils.getCellValueFormula(c, formulaEvaluator);
							}

							if (c.getColumnIndex() == 2) {
								order.setMerchantname(value);
								System.out.println("经销商全称:" + value);
							} else if (c.getColumnIndex() == 5) {
								order.setAddress(value);
								System.out.println("收货地址:" + value);
							}
						}
						break;
					case 4:
						for (Cell c : row) {
							String value = null;
							boolean isMerge = ExcelUtils.isMergedRegion(sheet, i, c.getColumnIndex());
							// 判断是否具有合并单元格
							if (isMerge) {
								value = ExcelUtils.getMergedRegionValue(sheet, row.getRowNum(), c.getColumnIndex());
							} else {
								value = ExcelUtils.getCellValueFormula(c, formulaEvaluator);
							}

							if (c.getColumnIndex() == 2) {

								Double f = Double.valueOf(value);
								Integer intvalue = (int)Math.ceil(f);
								order.setCapacity(intvalue);
								System.out.println("经销商库容:" + intvalue);
							} else if (c.getColumnIndex() == 5) { 

								Date expDate = ExcelUtils.stringToNormalDate(value);
								order.setExptime(expDate);
								System.out.println("期望发货时间:" + expDate);
							}
						}
						break;
					case 5:
						for (Cell c : row) {
							String value = null;
							boolean isMerge = ExcelUtils.isMergedRegion(sheet, i, c.getColumnIndex());
							// 判断是否具有合并单元格
							if (isMerge) {
								value = ExcelUtils.getMergedRegionValue(sheet, row.getRowNum(), c.getColumnIndex());
							} else {
								value = ExcelUtils.getCellValueFormula(c, formulaEvaluator);
							}

							if (c.getColumnIndex() == 2) {
								order.setMonopolize(value);
								System.out.println("经销商品牌经营:" + value);
							}
							else if (c.getColumnIndex() == 5) {
								order.setBrandnumber(value);
								System.out.println("品牌经营数量:" + value);
							}
						}
						break;
					}

				}
				for (int i = sheet.getLastRowNum() - 3 + 1; i < sheet.getLastRowNum() - 0 + 1; i++) { //i < sheet.getLastRowNum() - 0 + 1;
					row = sheet.getRow(i);
					if (null == row) {
						continue;
					}

					switch (i - sheet.getLastRowNum()-1) {
					case -3:
						for (Cell c : row) {
							String value = null;
							boolean isMerge = ExcelUtils.isMergedRegion(sheet, i, c.getColumnIndex());
							// 判断是否具有合并单元格
							if (isMerge) {
								value = ExcelUtils.getMergedRegionValue(sheet, row.getRowNum(), c.getColumnIndex());
							} else {
								value = ExcelUtils.getCellValueFormula(c, formulaEvaluator);
							}

							if (c.getColumnIndex() == 2) {
								// TODO
								//Integer intvalue = Integer.parseInt(value);
								Double f = Double.valueOf(value);
								Integer intvalue = (int)Math.ceil(f);
								order.setTotal(intvalue);
								System.out.println("合计:" + value + " 辆");
							} else if (c.getColumnIndex() == 5) {
								//Long f = Long.valueOf(value);Long f = Long.parseLong(value);
								BigDecimal bd=new BigDecimal(value);

								order.setTotalprice(bd);
								System.out.println("总价:" + value + " 元");
							}
						}
						break;	

					case -2:
						for (Cell c : row) {
							String value = null;
							boolean isMerge = ExcelUtils.isMergedRegion(sheet, i, c.getColumnIndex());
							// 判断是否具有合并单元格
							if (isMerge) {
								value = ExcelUtils.getMergedRegionValue(sheet, row.getRowNum(), c.getColumnIndex());
							} else {
								value = ExcelUtils.getCellValueFormula(c, formulaEvaluator);
							}

							if (c.getColumnIndex() == 2) {
								// TODO
								order.setOrganizername(value);
								System.out.println("编制人姓名:" + value);
							} else if (c.getColumnIndex() == 4) {
								order.setOrganizerphone(value);
								System.out.println("编制人电话:" + value);
							} else if (c.getColumnIndex() == 6) {
								Date subTime = ExcelUtils.stringToNormalDate(value);
								order.setSubmittime(subTime);
								System.out.println("订单提报时间:" + subTime);
							}
						}
						break;
					case -1:
						for (Cell c : row) {//循环单行的每一个空格
							String value = null;
							boolean isMerge = ExcelUtils.isMergedRegion(sheet, i, c.getColumnIndex());
							// 判断是否具有合并单元格
							if (isMerge) {
								value = ExcelUtils.getMergedRegionValue(sheet, row.getRowNum(), c.getColumnIndex());
							} else {
								value = ExcelUtils.getCellValueFormula(c, formulaEvaluator);
							}

							if (c.getColumnIndex() == 2) {
								order.setRegulatorname(value);
								System.out.println("接收人姓名:" + value);
							} else if (c.getColumnIndex() == 4) {
								order.setRegulatorphone(value);
								System.out.println("接收人电话:" + value);
							} else if (c.getColumnIndex() == 6) {
								Date receiveTime = ExcelUtils.stringToNormalDate(value);
								order.setReceivetime(receiveTime);
								System.out.println("订单接收确认时间:" + receiveTime);
							}
						}
						break;
					}

				}
				if(ownerEntity.isEmpty()||mertPhone.isEmpty()){
					result.setRespcode(ResponseEnum.PARAM_NULL.getCode());
					result.setMessage(ResponseEnum.PARAM_NULL.getMessage());
				}else{
					T301_merchant merchant = manufactService.qryMerchantByOwnerPhone(ownerEntity, mertPhone);
					Date now = new Date();
					order.setManufactid(merchant.getEntityid());
					order.setName(merchant.getEntityname());
					order.setMerchantid(merchant.getMerchantid());
					order.setCreatetime(now);

					manufactService.addcarOrder(order);
					flag = true;
				}
				//以下内容添加到扩展表
				for (int i = 7; i < sheet.getLastRowNum() - 3 + 1; i++) {
					row = sheet.getRow(i);
					if (null == row) {
						continue;
					}
					T701_car_order_ext orext = new T701_car_order_ext();
					orext.setOrderid(orderid);
					for (Cell c : row) {
						String value = null;
						boolean isMerge = ExcelUtils.isMergedRegion(sheet, i, c.getColumnIndex());
						// 判断是否具有合并单元格
						if (isMerge) {
							value = ExcelUtils.getMergedRegionValue(sheet, row.getRowNum(), c.getColumnIndex());
						} else {
							value = ExcelUtils.getCellValueFormula(c, formulaEvaluator);
						}

						if (c.getColumnIndex() == 2) {
							orext.setModel(value);
						} else if (c.getColumnIndex() == 3) {
							orext.setVersion(value);
						} else if (c.getColumnIndex() == 4) {
							Double f = Double.valueOf(value);
							Integer intvalue = (int)Math.ceil(f);
							orext.setTotal(intvalue);
							System.out.println("数量:" + value + " 辆");
						} else if (c.getColumnIndex() == 5) {
							BigDecimal bd=new BigDecimal(value);
							orext.setUnitprice(bd);
							System.out.println("单价:" + bd + " 元");
						} else if (c.getColumnIndex() == 6) {
							//Long f = Long.valueOf(value);Long f = Long.parseLong(value);
							BigDecimal bd=new BigDecimal(value);
							orext.setTotalprice(bd);
							System.out.println("金额:" + value + " 元");
						} else if (c.getColumnIndex() == 7) {
							orext.setProperty(value);
							System.out.println("属性:" + value);
						}
					}
					if(flag){
						manufactService.addcarOrderExt(orext);

					}else{
						result.setRespcode(ResponseEnum.PARAM_NULL.getCode());
						result.setMessage(ResponseEnum.PARAM_NULL.getMessage());
					}
				}

				setSucc(result);
			} else {
				setInvalidToken(result);
			}
		} catch (ServiceException e) {
			result.setCodeMessage(e.getErrorCode(), e.getMessage());
		} catch (Exception e) {
			logger.error("", e);
			result.setRespcode(ResponseEnum.SYS_ERROR.getCode());
			result.setMessage(ResponseEnum.SYS_ERROR.getMessage());
		}
		return result;
	}
}