java导入excel记录报错数据（java-文件上传-excel存入数据库全代码及流程（附前端代码））

时间2025-04-30 12:07:51分类IT科技浏览3310

导读：今天给大家带来的是文件上传中比较常用的，上传excel文件，将表格中的数据存入数据库中的一个转化的工具类；大致的流程是：前端点击上传按钮-->选择需要上传的excel表格-->确认上传--> 文件传到后台-->后台处理file文件-->将文件转化成List-->将Lis...

今天给大家带来的是文件上传中比较常用的，上传excel文件，将表格中的数据存入数据库中的一个转化的工具类；大致的流程是：前端点击上传按钮-->选择需要上传的excel表格-->确认上传--> 文件传到后台-->后台处理file文件-->将文件转化成List-->将List集合存入数据库

首先通过前端点击按钮：

点击导入按钮，触发input框点击事件：

$(#input).click(function () { $(#import_modal).modal(show); })

点击按钮后，弹出框：

弹窗代码：

<div class="modal fade" id="import_modal"> <div class="modal-dialog" style="max-height:80%"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal"> <span aria-hidden="true">×</span> <span class="sr-only">Close</span> </button> <h4 class="modal-title">上传数据</h4> </div> <div class="modal-body" style="overflow: auto; max-hieght:800px;"> <div class="container-fluid" style="height: 300px;"> <form class="form-horizontal" enctype="multipart/form-data"> <div class="form-group"> <label for="file" class="col-sm-3 control-label"> 上传文件</label> <div class="col-sm-4"> <input class="form-control" accept=".xlsx" style="padding:3px;" type="file" id="file" name="file"/> </div> </div> </form> </div> </div> <div class="modal-footer"> <button type="button" class="btn btn-primary" id="import" data-loading-text="正在上传...">确定 </button> <button type="button" class="btn btn-default" data- dismiss="modal">取消</button> </div> </div> </div> </div>

选择要上传的文件，然后点击确定：

点击确定触发：将请求地址改成自己本地的

$(#import_modal form).bootstrapValidator(destroy); $(#import_modal form).bootstrapValidator({ message: 输入不合法, fields: { file: { validators: { notEmpty: {message: 文件不能为空} } } } }).on(success.form.bv, function (e) { var files = $("#file").get(0).files; if (files.length > 0) { if (files[0].size > 1024 * 1024 * 100) { alert(文件大小不能超过100MB); return false; } var formData = new FormData(); formData.append(file, files[0]); $.ajax({ url: ${pageContext.request.contextPath}/backend/form/evaluation_update/import, type: POST, cache: false, data: formData, processData: false, contentType: false, dataType: "json", beforeSend: function () { $(#import).button(loading); }, success: function (data) { if (data.errorCode === 0) { alert(data.message); $(#import_modal).modal(hide); location.reload(); } else { alert(data.message); } $(#import).button(reset); }, error: function () { $(#import).button(reset); } }); } });

请求到后台：

poi依赖

<dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <version>3.14</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>3.14</version> </dependency>

controller层

@RequestMapping("evaluation_update/import") @ResponseBody public Result evaluationUpdate(@RequestParam(value = "file", required = true) MultipartFile file, UserSession session) throws Exception { try { Result result = new Result(); result.setMessage("导入成功"); int count = wfOrderService.importAnnualDemand(session, file); result.setMessage(count > 0 ? "导入成功，共：" + count + "条记录！" : "本次导入0条数据！"); return result; } catch (Exception e) { e.printStackTrace(); return null; } }

service层：

public int importAnnualDemand(UserSession session, MultipartFile file) throws ErrorCodeException { List<Map<String, ArrayList<String[]>>> allDateList = new ArrayList<>(); List<Requirement>list=new ArrayList<>(); List<String[]> dataList; try { String filePath=getFilePath(file); Map<String,Object> insert = new HashMap(); insert.put("file", filePath); File excelFile = uploadManager.file(filePath); dataList = POIExcelUtil.readExcel(excelFile, 1, false); System.out.println(dataList); for (String[] strings : dataList) { Requirement r = new Requirement(); r.setErpCode(strings[0]); r.setAnnualDemand(new BigDecimal(strings[1])); r.setYear(strings[2]); list.add(r); } if(!list.isEmpty()){ return this.insert(STATEMENT_ID + "importAnnualDemand", list); } return 0; }catch (Exception e){ e.printStackTrace(); return 0; } } POIExcelUtil.readExcel工具类代码(拷贝即用)： //包名 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.*; import java.text.DecimalFormat; import java.text.NumberFormat; import java.text.SimpleDateFormat; import java.util.*; public class POIExcelUtil { private final static String XLS = "xls"; private final static String XLSX = "xlsx"; private static NumberFormat numberFormat = NumberFormat.getNumberInstance(); static { numberFormat.setGroupingUsed(false); } public static List<String[]> readExcel(File file, int firstRowNum, boolean needTitle) throws IOException { // 检查文件 checkFile(file); Workbook workBook = getWorkBook(file); // 返回对象,每行作为一个数组，放在集合返回 ArrayList<String[]> rowList = new ArrayList<>(); if (null != workBook) { // 获得当前sheet工作表 Sheet sheet = workBook.getSheetAt(0); if (sheet != null) { // 获得当前sheet的结束行 int lastRowNum = sheet.getLastRowNum(); sheet.getSheetName(); int firstCellNum = sheet.getRow(firstRowNum - 1).getFirstCellNum(); int lastCellNum = sheet.getRow(firstRowNum - 1).getLastCellNum(); if (lastCellNum > 200) { lastCellNum = 200; } if (needTitle) { // 获取标题行，并返回在第一个list元素 Row titleRow = sheet.getRow(firstRowNum - 1); String[] titleCells = new String[lastCellNum]; // 循环当前行 for (int cellNum = firstCellNum; cellNum < lastCellNum; cellNum++) { Cell cell = titleRow.getCell(cellNum); titleCells[cellNum] = getOriginalCellValue(cell); } rowList.add(titleCells); } // 循环所有行数据 for (int rowNum = firstRowNum; rowNum <= lastRowNum; rowNum++) { // 获得当前行 Row row = sheet.getRow(rowNum); if (row == null) { continue; } String[] cells = new String[lastCellNum]; // 循环当前行 for (int cellNum = firstCellNum; cellNum < lastCellNum; cellNum++) { Cell cell = row.getCell(cellNum); cells[cellNum] = getOriginalCellValue(cell); } rowList.add(cells); } } workBook.close(); } return rowList; } public static List<String[]> readExcelPrecision(File file, int firstRowNum) throws IOException { // 检查文件 checkFile(file); Workbook workBook = getWorkBook(file); // 返回对象,每行作为一个数组，放在集合返回 ArrayList<String[]> rowList = new ArrayList<>(); if (null != workBook) { // 获得当前sheet工作表 Sheet sheet = workBook.getSheetAt(0); if (sheet != null) { // 获得当前sheet的结束行 int lastRowNum = sheet.getLastRowNum(); sheet.getSheetName(); int firstCellNum = sheet.getRow(firstRowNum - 1).getFirstCellNum(); int lastCellNum = sheet.getRow(firstRowNum - 1).getLastCellNum(); if (lastCellNum > 200) { lastCellNum = 200; } // 循环所有行数据 for (int rowNum = firstRowNum; rowNum <= lastRowNum; rowNum++) { // 获得当前行 Row row = sheet.getRow(rowNum); if (row == null) { continue; } String[] cells = new String[lastCellNum]; // 循环当前行 for (int cellNum = firstCellNum; cellNum < lastCellNum; cellNum++) { Cell cell = row.getCell(cellNum); cells[cellNum] = getOriginalCellValuePrecision(cell); } rowList.add(cells); } } workBook.close(); } return rowList; } public static List<Map<String, ArrayList<String[]>>> readMultiExcel(File file, int firstRowNum, int firstRowNum2, boolean needTitle) throws IOException { // 检查文件 checkFile(file); Workbook workBook = getWorkBook(file); List<Map<String, ArrayList<String[]>>> resultList = new ArrayList<>(); // 返回对象,每行作为一个数组，放在集合返回 if (null != workBook) { // 获得当前sheet工作表 for (int w = 0; w < workBook.getNumberOfSheets(); w++) { Sheet sheet = workBook.getSheetAt(w); if (sheet != null) { ArrayList<String[]> rowList = new ArrayList<>(); Map<String, ArrayList<String[]>> sheetMap = new HashMap<>(); String sheetName = sheet.getSheetName(); // 获得当前sheet的结束行 int lastRowNum = sheet.getLastRowNum(); int firstCellNum = sheet.getRow(w > 0 ? firstRowNum2 - 1 : firstRowNum - 1).getFirstCellNum(); int lastCellNum = sheet.getRow(w > 0 ? firstRowNum2 - 1 : firstRowNum - 1).getLastCellNum(); if (needTitle) { // 获取标题行，并返回在第一个list元素 Row titleRow = sheet.getRow(w > 0 ? firstRowNum2 - 1 : firstRowNum - 1); String[] titleCells = new String[lastCellNum]; // 循环当前行 for (int cellNum = firstCellNum; cellNum < lastCellNum; cellNum++) { Cell cell = titleRow.getCell(cellNum); titleCells[cellNum] = getOriginalCellValueByMulti(cell); } rowList.add(titleCells); } // 循环所有行数据 for (int rowNum = w > 0 ? firstRowNum2 - 1 : firstRowNum - 1; rowNum <= lastRowNum; rowNum++) { // 获得当前行 Row row = sheet.getRow(rowNum); if (row == null) { continue; } String[] cells = new String[lastCellNum]; // 循环当前行 for (int cellNum = firstCellNum; cellNum < lastCellNum; cellNum++) { Cell cell = row.getCell(cellNum); cells[cellNum] = getOriginalCellValueByMulti(cell); } rowList.add(cells); } sheetMap.put(sheetName, rowList); resultList.add(sheetMap); } } workBook.close(); } return resultList; } public static String getOriginalCellValueByMulti(Cell cell) { DecimalFormat originalValueDecimalFormat = new DecimalFormat("#.##"); SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd"); if (cell == null) { return ""; } int cellType = cell.getCellType(); switch (cellType) { case Cell.CELL_TYPE_FORMULA: return numberFormat.format(cell.getNumericCellValue()); case Cell.CELL_TYPE_NUMERIC: if (org.apache.poi.ss.usermodel.DateUtil.isCellDateFormatted(cell)) { Date dateCellValue = cell.getDateCellValue(); if (dateCellValue != null) { return simpleDateFormat.format(dateCellValue); } return ""; } return originalValueDecimalFormat .format(cell.getNumericCellValue()); case Cell.CELL_TYPE_STRING: return cell.getStringCellValue(); case Cell.CELL_TYPE_BOOLEAN: return String.valueOf(cell.getBooleanCellValue()); case Cell.CELL_TYPE_BLANK: return ""; case Cell.CELL_TYPE_ERROR: return String.valueOf(cell.getErrorCellValue()); } return ""; } public static String getOriginalCellValue(Cell cell) { DecimalFormat originalValueDecimalFormat = new DecimalFormat("#.##"); SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd"); if (cell == null) { return ""; } int cellType = cell.getCellType(); switch (cellType) { case Cell.CELL_TYPE_FORMULA: return String.valueOf(cell.getNumericCellValue()); case Cell.CELL_TYPE_NUMERIC: if (org.apache.poi.ss.usermodel.DateUtil.isCellDateFormatted(cell)) { Date dateCellValue = cell.getDateCellValue(); if (dateCellValue != null) { return simpleDateFormat.format(dateCellValue); } return ""; } return originalValueDecimalFormat .format(cell.getNumericCellValue()); case Cell.CELL_TYPE_STRING: return cell.getStringCellValue(); case Cell.CELL_TYPE_BOOLEAN: return String.valueOf(cell.getBooleanCellValue()); case Cell.CELL_TYPE_BLANK: return ""; case Cell.CELL_TYPE_ERROR: return String.valueOf(cell.getErrorCellValue()); } return ""; } public static String getOriginalCellValuePrecision(Cell cell) { DecimalFormat originalValueDecimalFormat = new DecimalFormat("#.####"); SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd"); if (cell == null) { return ""; } int cellType = cell.getCellType(); switch (cellType) { case Cell.CELL_TYPE_FORMULA: return String.valueOf(cell.getNumericCellValue()); case Cell.CELL_TYPE_NUMERIC: if (org.apache.poi.ss.usermodel.DateUtil.isCellDateFormatted(cell)) { Date dateCellValue = cell.getDateCellValue(); if (dateCellValue != null) { return simpleDateFormat.format(dateCellValue); } return ""; } return originalValueDecimalFormat .format(cell.getNumericCellValue()); case Cell.CELL_TYPE_STRING: return cell.getStringCellValue(); case Cell.CELL_TYPE_BOOLEAN: return String.valueOf(cell.getBooleanCellValue()); case Cell.CELL_TYPE_BLANK: return ""; case Cell.CELL_TYPE_ERROR: return String.valueOf(cell.getErrorCellValue()); } return ""; } /** * 获得工作簿对象 */ private static Workbook getWorkBook(File file) throws IOException { String filename = file.getName(); Workbook workbook = null; InputStream is = new FileInputStream(file); if (filename.endsWith(XLS)) { // 2003 workbook = new HSSFWorkbook(is); } else if (filename.endsWith(XLSX)) { // 2007 workbook = new XSSFWorkbook(is); } return workbook; } /** * 检查文件 */ private static void checkFile(File file) throws IOException { if (null == file) { throw new FileNotFoundException("文件不存在！"); } // 获取文件名 String filename = file.getName(); // 判断是否为excel文件 if (!filename.endsWith(XLS) && !filename.endsWith(XLSX)) { throw new IOException(filename + "不是excel文件"); } } /** * 取单元格的值 */ private static String getCellValue(Cell cell) { String cellValue = ""; if (cell == null) { return cellValue; } // 把数字当成String来读，防止1读成1.0 if (cell.getCellType() == Cell.CELL_TYPE_NUMERIC) { // 日期格式 short format = cell.getCellStyle().getDataFormat(); if (format == 14 || format == 31 || format == 57 || format == 58 || (182 <= format && format <= 196) || (210 <= format && format <= 213) || (208 == format)) { // 日期 SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); double value = cell.getNumericCellValue(); Date date = org.apache.poi.ss.usermodel.DateUtil.getJavaDate(value); if (date == null || "".equals(date)) { return ""; } return sdf.format(date); } else { // 不是日期格式 cell.setCellType(Cell.CELL_TYPE_STRING); } } // 判断数据的类型 switch (cell.getCellType()) { // 数字 case Cell.CELL_TYPE_NUMERIC: cellValue = String.valueOf(cell.getNumericCellValue()); break; // 字符串 case Cell.CELL_TYPE_STRING: cellValue = String.valueOf(cell.getStringCellValue()).trim().replaceAll(String.valueOf((char) 10), "") .replaceAll(String.valueOf((char) 11), "").replaceAll(String.valueOf((char) 12), "") .replaceAll(String.valueOf((char) 13), ""); break; // 布尔 case Cell.CELL_TYPE_BOOLEAN: cellValue = String.valueOf(cell.getBooleanCellValue()); break; // 公式 case Cell.CELL_TYPE_FORMULA: // cellValue = String.valueOf(cell.getCellFormula()); try { cellValue = String.valueOf(cell.getNumericCellValue()); } catch (IllegalStateException e) { cellValue = String.valueOf(cell.getRichStringCellValue()); } break; // 空 case Cell.CELL_TYPE_BLANK: cellValue = ""; break; // 错误 case Cell.CELL_TYPE_ERROR: cellValue = "非法字符"; break; default: cellValue = "未知类型"; break; } return cellValue; } }

service注入一个上传类：

@Autowired private UploadManager uploadManager;

上传工具类（拷贝即用）：

import com.yogapay.core.LangUitls; import com.yogapay.sql.mapping2.StringListSQLData; import java.io.File; import java.io.IOException; import java.net.URI; import java.util.Collections; import java.util.Date; import java.util.HashMap; import java.util.Map; import javax.servlet.ServletContext; import org.apache.commons.lang.StringUtils; import org.springframework.beans.factory.InitializingBean; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.multipart.MultipartFile; public class UploadManager implements InitializingBean { public static final String PATH_PREFIX = "/uploads"; private final String basePath; private final String[] dirNames; @Autowired(required = false) private ServletContext sc; // private File baseDir; private URI baseDirUri; private Map<String, File> dirs; public UploadManager(String basePath, String dirNames) { this.basePath = StringUtils.trimToNull(basePath); this.dirNames = dirNames.split("\\s+"); } @Override public void afterPropertiesSet() throws Exception { if (sc == null) { baseDir = new File("target"); } else { baseDir = new File(basePath == null ? sc.getRealPath("uploads") : basePath); } baseDirUri = baseDir.toURI(); dirs = new HashMap<String, File>(); for (String dir : dirNames) { dirs.put(dir, createDir(dir)); } dirs = Collections.unmodifiableMap(dirs); } private File createDir(String name) { File t = new File(baseDir, name); if (!t.mkdir() && !t.exists()) { throw new RuntimeException(t.getAbsolutePath()); } return t; } public File file(String src) { if (!src.startsWith(PATH_PREFIX)) { throw new IllegalArgumentException(); } src = src.substring(PATH_PREFIX.length()); if (src.isEmpty() || src.charAt(0) != /) { throw new IllegalArgumentException(); } return new File(baseDirUri.resolve(src.substring(1))); } public String src(File f) { URI uri = baseDirUri.relativize(f.toURI()); if (uri.isAbsolute()) { throw new IllegalArgumentException(); } return PATH_PREFIX + "/" + uri; } public StringListSQLData saveDailyFiles(File rdir, Date date, MultipartFile[] files, String prefix, String suffix) throws IOException { if (files == null) { return null; } File dir = LangUitls.dailyFile(rdir, date); StringListSQLData fileList = new StringListSQLData(); for (MultipartFile img : files) { if (!img.isEmpty()) { File f = File.createTempFile(prefix, suffix, dir); img.transferTo(f); fileList.add(src(f)); } } return fileList; } public File getBaseDir() { return baseDir; } public Map<String, File> getDirs() { return dirs; } } StringListSQLData： public class StringListSQLData extends ArrayList<String> implements SQLDataConvertible { public StringListSQLData(int initialCapacity) { super(initialCapacity); } public StringListSQLData() { } public StringListSQLData(Collection<? extends String> c) { super(c); } @Override public void toSQLData(PreparedStatement pstmt, int index) throws SQLException { Element eArray = DocumentHelper.createElement("List"); for (String t : this) { Element eValue = DocumentHelper.createElement("value"); eValue.setText(t == null ? "" : t); eArray.add(eValue); } pstmt.setString(index, eArray.asXML()); } @Override public boolean fromSQLData(ResultSet rs, int index) throws SQLException { String xml = rs.getString(index); if (rs.wasNull()) { return false; } try { Document doc = DocumentHelper.parseText(xml); for (Iterator<Element> iterator = doc.getRootElement().elementIterator("value"); iterator.hasNext();) { Element next = iterator.next(); this.add(next.getText()); } } catch (DocumentException ex) { throw new SQLException("\r\n" + xml, ex); } return true; }

获取文件地址：

public String getFilePath(MultipartFile file) throws IOException { MultipartFile[] files = {file}; String targetDir = uploadManager.getBaseDir() + "/" + ""; int index = file.getOriginalFilename().lastIndexOf("."); String ext = index > 0 ? file.getOriginalFilename().substring(index + 1) : ""; StringListSQLData fileData = uploadManager.saveDailyFiles(new File(targetDir), new Date(), files, "file_", "." + ext); return fileData.get(0); }

最后在Mybatis中将对应映射的sql写好就行了哦

<insert id="importAnnualDemand" > INSERT IGNORE INTO 表名(字段名) VALUES <foreach item="i" collection="list" separator=",">(#{i.属性名})</foreach> </insert>

最后导入成功：

今天的分享结束啦，谢谢大家哦~~