ajax上传文件与excel表格导入总结
一、excel导入：（还有别的插件像EasuPoi ，ExcelUtil等）
1、需要导入包： Apache POI /
2、依赖：
官方Demo：
$(element).upload({
name: 'file',//上传组件的name属性，即
action: '',//向服务器请求的路径
enctype: 'multipart/form-data',//mime类型，默认即可
params: {},//请求时额外传递的参数，默认为空
autoSubmit: true,//是否自动提交，即当选择了文件，自动关闭了选择窗口后，是否自动提交请求。
onSubmit: function() {},//提交表单之前触发事件
onComplete: function() {},//提交表单完成后触发的事件
onSelect: function() {}//当用户选择了一个文件后触发事件
});
3、项目代码：
4、poi工具类：
package net.huadong.util;
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 org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.multipart.MultipartFile;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
public class POIUtil {
private static Logger logger = LoggerFactory.getLogger(POIUtil.class);
private final static String xls = "xls";
private final static String xlsx = "xlsx";
/**
* 读入excel文件，解析后返回
* @param file
* @throws IOException
*/
public static List readExcel(MultipartFile file) throws IOException{
//检查文件
checkFile(file);
//获得Workbook工作薄对象
Workbook workbook = getWorkBook(file);
//创建返回对象，把每行中的值作为一个数组，所有行作为一个集合返回
List list =null;
if(workbook != null){
//遍历Excel中所有的sheet
for(int sheetNum = 0;sheetNum < workbook.getNumberOfSheets();sheetNum++){
//获得当前sheet工作表
Sheet sheet = workbook.getSheetAt(sheetNum);
if(sheet == null){
continue;
}
//获得当前sheet的开始行
int firstRowNum = sheet.getFirstRowNum();
//获得当前sheet的结束行
int lastRowNum = sheet.getLastRowNum();
//遍历除了第一行的所有行
for(int rowNum = firstRowNum;rowNum <= lastRowNum;rowNum++){
//获得当前行
Row row = sheet.getRow(rowNum);
if(row == null){
continue;
}
//获得当前行的开始列
int firstCellNum = row.getFirstCellNum();
//获得当前行的列数
int lastCellNum = row.getPhysicalNumberOfCells();
System.out.println("当前列数："+lastCellNum);
String[] cells = new String[row.getPhysicalNumberOfCells()];
//循环当前行
for(int cellNum = firstCellNum; cellNum < lastCellNum;cellNum++){
Cell cell = row.getCell(cellNum);
cells[cellNum] = getCellValue(cell);
}
list = new ArrayList();
list.add(cells);
}
}
// workbook.close();
}
return list;
}
public static void checkFile(MultipartFile file) throws IOException{
//判断文件是否存在
if(null == file){
logger.error("文件不存在！");
throw new FileNotFoundException("文件不存在！");
}
//获得文件名
String fileName = file.getOriginalFilename();
//判断文件是否是excel文件
if(!fileName.endsWith(xls) && !fileName.endsWith(xlsx)){
logger.error(fileName + "不是excel文件");
throw new IOException(fileName + "不是excel文件");
}
}
public static Workbook getWorkBook(MultipartFile file) {
//获得文件名
String fileName = file.getOriginalFilename();
//创建Workbook工作薄对象，表示整个excel
Workbook workbook = null;
try {
//获取excel文件的io流
InputStream is = file.getInputStream();
//根据文件后缀名不同(xls和xlsx)获得不同的Workbook实现类对象
if(fileName.endsWith(xls)){
//2003
workbook = new HSSFWorkbook(is);
}else if(fileName.endsWith(xlsx)){
//2007 及2007以上
workbook = new XSSFWorkbook(is);
}
} catch (IOException e) {
logger.info(e.getMessage());
}
return workbook;
}
public static String getCellValue(Cell cell){
String cellValue = "";
if(cell == null){
return cellValue;
}
//把数字当成String来读，避免出现1读成1.0的情况
if(cell.getCellType() == Cell.CELL_TYPE_NUMERIC){
cell.setCellType(Cell.CELL_TYPE_STRING);
}
//判断数据的类型
switch (cell.getCellType()){
case Cell.CELL_TYPE_NUMERIC: //数字
cellValue = String.valueOf(cell.getNumericCellValue());
break;
case Cell.CELL_TYPE_STRING: //字符串
cellValue = String.valueOf(cell.getStringCellValue());
break;
case Cell.CELL_TYPE_BOOLEAN: //Boolean
cellValue = String.valueOf(cell.getBooleanCellValue());
break;
case Cell.CELL_TYPE_FORMULA: //公式
cellValue = String.valueOf(cell.getCellFormula());
break;
case Cell.CELL_TYPE_BLANK: //空值
cellValue = "";
break;
case Cell.CELL_TYPE_ERROR: //故障
cellValue = "非法字符";
break;
default:
cellValue = "未知类型";
break;
}
return cellValue;
}
}
5、后台代码：（inputFile一点跟name属性对应起来）Controller
//excel上传
@RequestMapping( method = RequestMethod.POST ,value="/uploadExcel")
@ResponseBody
public String uploadExcel(@RequestParam(value="inputFile") MultipartFile inputFile) throws IOException {
String flag ="0";
try{
//这里得到的是一个集合，里面的每一个元素是String[]数组
List list = POIUtil.readExcel(inputFile);
codShipDataService.importExcelTable(list);
} catch(Exception e){
e.printStackTrace();
flag = "1";
}
return flag;
} serviceImpl：
@Override
public void importExcelTable( List list) throws Exception {
for(String[] strings:list ){
CodShipData codShipData= new CodShipData();
codShipData.setShipOfficeNum(strings[0]);
codShipData.setShortName(strings[1]);
codShipData.setcShipNam(strings[2]);
codShipData.seteShipNam(strings[3]);
codShipData.setNationality(strings[4]);
codShipData.setShipImo(strings[5]);
codShipData.setShipMmsi(strings[6]);
HdUtil.setCommonPro(true,codShipData);
BigDecimal bd = new BigDecimal(strings[8]);
codShipData.setShipGrossWgt(bd);
this.insertSelective(codShipData);
}
} 参考这篇文章：https://blog.csdn.net/weixin_39816740/article/details/80508880
二、文件上传：
后台代码：
package net.huadong.controller;
import net.huadong.entity.CodAttachment;
import net.huadong.service.CodAttachmentService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
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 javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.UnsupportedEncodingException;
import java.util.Random;
@Controller
@RequestMapping(value = "/Upload")
public class UploadController {
@Resource
private CodAttachmentService codAttachmentService;
Logger logger = LoggerFactory.getLogger(UploadController.class);
@ResponseBody
@RequestMapping(method = RequestMethod.POST,value = "/ToUpload")
public Integer ToUploadFile(@RequestParam("inputFile") MultipartFile inputFile,HttpServletRequest request, HttpServletResponse response) {
CodAttachment codAttachment = new CodAttachment();
try {
request.setCharacterEncoding("utf-8");
} catch (UnsupportedEncodingException e1) {
e1.printStackTrace();
}
response.setContentType("text/html;charset=utf-8");
response.addHeader("Access-Control-Allow-Origin", "*");
response.addHeader("Access-Control-Allow-Methods", "GET,POST");
response.addHeader("Content-Type","multipart/form-data");
String originalFilename = null;
String ct =null;
String courseFile =null;
try {
if (inputFile.isEmpty()) {
return 0;
} else {
originalFilename = inputFile.getOriginalFilename();
// int i=originalFilename.lastIndexOf(".");
// name = originalFilename.substring(0,i-1);
long size = inputFile.getSize();
ct = inputFile.getContentType();
System.out.println("原始文件全路径名: " + originalFilename);
System.out.println("文件大小:" + size + "KB");
System.out.println("文件类型:" + ct);
System.out.println("========================================");
}
// 1. 获取项目的全路径
String root = request.getSession().getServletContext().getRealPath("/webapp/files");
String filename = inputFile.getOriginalFilename();
System.out.println("filename文件:" + filename);
//获取文件名，最后一个"\"后面的名字
int index = filename.lastIndexOf("\\");
if (index != -1) {
filename = filename.substring(index + 1);
}
//生成唯一的文件名
Random rnd = new Random();
String savename = rnd.nextInt() + "_" + filename;
System.out.println("savename文件:" + savename);
//1. 根据文件名获取hashcode
int hCode = filename.hashCode();
// 将hashcode转化为无符号整数基数为16的整数参数的字符串
String hex = Integer.toHexString(hCode);
//2. 根据字符串生成文件目录
File dirFile = new File(root, hex.charAt(0) + "/" + hex.charAt(1));
dirFile.mkdirs();
//4. 生成文件
File destFile = new File(dirFile, savename);
courseFile = destFile.getCanonicalPath();
// 将文件保存到服务器相应的目录位置
String tableId = request.getParameter("tableId");
String enterpriseName = request.getParameter("enterpriseName");
String type = request.getParameter("type");
// System.out.println("fffgg=gggg"+saveEntity);
inputFile.transferTo(destFile);
codAttachment.setAttachmentName(originalFilename);
codAttachment.setAttachmentType(type);
codAttachment.setAttachmentUrl(courseFile);
codAttachment.setTableId(tableId);
codAttachment.setTableName(enterpriseName);
codAttachmentService.saveUpload(codAttachment);
} catch (Exception e) {
e.printStackTrace();
return 0;
}
return 1;
}
}
注意下格式