java Excel表格导入
html:
js:
upload: function() {
$("#uploadFile").empty();
$("#uploadFile").append("");
$("#file").click();
$("#file").on("change", function () {
var file = document.getElementById("file").files[0];
if (file == null || file == undefined) {
dialogMsg('请选择上传文件！');
return false;
}
var fm = new FormData();
fm.append('file', file);
$.ajax(
{
url: '../../student/grade/importExcel',
data: fm,
type: 'POST',
dataType: 'json',
contentType: false,
processData: false,
success: function (data) {
if (data.code == '0') {
dialogMsg(data.msg, "success");
vm.load();
} else {
dialogMsg(data.msg, "error");
}
}
}
)
})
},java:
/**
* 表格导入
* @param request
* @return
*/
@RequestMapping("/importExcel")
public R importExcel(HttpServletRequest request) {
CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(
request.getSession().getServletContext());
if (multipartResolver.isMultipart(request)) {
MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest) request;
MultipartFile file = multiRequest.getFile("file");
long fileSize = file.getSize();
if (file.isEmpty()) {
return R.error( "文件为空");
} else if (fileSize > (10 * 1024 * 1024)) {
return R.error("文件过大");
} else {
// 获取文件名
String fileName = file.getOriginalFilename();
//验证文件名是否合格
if (!ExcelImportUtils.validateExcel(fileName)) {
return R.error( "文件必须是excel格式！");
}
//进一步判断文件内容是否为空（即判断其大小是否为0或其名称是否为null）
long size = file.getSize();
if (StringUtils.isEmpty(fileName) || size == 0) {
return R.error("文件不能为空！");
}
//批量导入
return this.batchImport(fileName, file);
}
}
return R.error();
}
private R batchImport(String fileName, MultipartFile mfile) {
try {
Workbook wb = null;
if (ExcelImportUtils.isExcel2007(fileName)) {
wb = new XSSFWorkbook(mfile.getInputStream());
} else {
wb = new HSSFWorkbook(mfile.getInputStream());
}
//根据excel里面的内容读取知识库信息
int count = readExcelValue(wb);
if (count > 0) {
return R.ok("导入成功！");
} else {
return R.error("导入出错！请检查数据格式！");
}
} catch (Exception e) {
e.printStackTrace();
}
return R.error("导入出错！请检查数据格式！");
}
private int readExcelValue(Workbook wb) {
Long areaId=sysUserService.userArea().getAreaId();
//得到第一个shell
Sheet sheet = wb.getSheetAt(0);
//得到Excel的行数
int totalRows = sheet.getPhysicalNumberOfRows();
//循环Excel行数,从第1行开始。标题不入库
for (int r = 1; r < totalRows; r++) {
Row row = sheet.getRow(r);
if (row != null) {
XStudentGradeEntity entity = new XStudentGradeEntity();
//循环Excel的列
if (row.getCell(0) != null) {
row.getCell(0).setCellType(CellType.STRING);
if (!"".equals(row.getCell(0).getStringCellValue())) {
entity.setName(row.getCell(0).getStringCellValue());
}
}
if (row.getCell(1) != null) {
row.getCell(1).setCellType(CellType.STRING);
if (!"".equals(row.getCell(1).getStringCellValue())) {
entity.setIdCardNo(row.getCell(1).getStringCellValue());
}
}
if (row.getCell(2) != null) {
row.getCell(2).setCellType(CellType.STRING);
if (!"".equals(row.getCell(2).getStringCellValue())) {
entity.setGrade(Integer.valueOf(row.getCell(2).getStringCellValue()));
}
}
if (row.getCell(3) != null) {
row.getCell(3).setCellType(CellType.STRING);
if (!"".equals(row.getCell(3).getStringCellValue())) {
entity.setSchoolName(row.getCell(3).getStringCellValue());
}
}
entity.setId(UUID.randomUUID().toString().replace("-", ""));
entity.setOrgId(areaId);
xStudentGradeService.saveXStudentGrade(entity);
}
}
return 1;
}utils:
package com.x.common.utils;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
public class ExcelImportUtils {
// @描述：是否是2003的excel，返回true是2003
public static boolean isExcel2003(String filePath) {
return filePath.matches("^.+\\.(?i)(xls)$");
}
//@描述：是否是2007的excel，返回true是2007
public static boolean isExcel2007(String filePath) {
return filePath.matches("^.+\\.(?i)(xlsx)$");
}
/** * 验证EXCEL文件 * @param filePath * @return */
public static boolean validateExcel(String filePath){
if (filePath == null || !(isExcel2003(filePath) || isExcel2007(filePath))){
return false;
}
return true;
}
public List> importExcel(InputStream inputStream, String fileName) throws Exception{
List> listALL = new ArrayList<>();
boolean isE2007 = false;
//判断是否是excel2007格式
if(fileName.endsWith("xlsx")){
isE2007 = true;
}
try {
InputStream input = inputStream; //建立输入流
Workbook wb;
//根据文件格式(2003或者2007)来初始化
if(isE2007){
wb = new XSSFWorkbook(input);
}else{
wb = new HSSFWorkbook(input);
}
Sheet sheet = wb.getSheetAt(0); //获得第一个表单
int rowCount = sheet.getLastRowNum()+1;
for(int i = 2; i < rowCount;i++){
Row row ;
List listRow = new ArrayList<>();
for(int j = 0;j<26;j++){
if(isMergedRegion(sheet,i,j)){
String rowString = getMergedRegionValue(sheet, i, j);
if(rowString!=null&&!"".equals(rowString)){
listRow.add(rowString);
}else{
listRow.add("");
}
}else{
row = sheet.getRow(i);
if(row.getCell(j)!=null){
listRow.add(row.getCell(j).toString());
}else{
listRow.add("");
}
}
}
listALL.add(listRow);
}
} catch (Exception ex) {
ex.printStackTrace();
}
return listALL;
}
/**
* 获取单元格的值
* @param cell
* @return
*/
public String getCellValue(Cell cell){
if(cell == null) {return "";}
cell.setCellType(CellType.STRING);
return cell.getStringCellValue();
}
/**
* 合并单元格处理,获取合并行
* @param sheet
* @return List
*/
public List getCombineCell(Sheet sheet)
{
List list = new ArrayList<>();
//获得一个 sheet 中合并单元格的数量
int sheetmergerCount = sheet.getNumMergedRegions();
//遍历所有的合并单元格
for(int i = 0; i listCombineCell,Cell cell,Sheet sheet){
int xr = 0;
int firstC = 0;
int lastC = 0;
int firstR = 0;
int lastR = 0;
for(CellRangeAddress ca:listCombineCell)
{
//获得合并单元格的起始行, 结束行, 起始列, 结束列
firstC = ca.getFirstColumn();
lastC = ca.getLastColumn();
firstR = ca.getFirstRow();
lastR = ca.getLastRow();
if(cell.getRowIndex() >= firstR && cell.getRowIndex() <= lastR)
{
if(cell.getColumnIndex() >= firstC && cell.getColumnIndex() <= lastC)
{
xr = lastR;
}
}
}
return xr;
}
/**
* 判断单元格是否为合并单元格，是的话则将单元格的值返回
* @param listCombineCell 存放合并单元格的list
* @param cell 需要判断的单元格
* @param sheet sheet
* @return
*/
public String isCombineCell(List listCombineCell,Cell cell,Sheet sheet)
throws Exception{
int firstC = 0;
int lastC = 0;
int firstR = 0;
int lastR = 0;
String cellValue = null;
for(CellRangeAddress ca:listCombineCell)
{
//获得合并单元格的起始行, 结束行, 起始列, 结束列
firstC = ca.getFirstColumn();
lastC = ca.getLastColumn();
firstR = ca.getFirstRow();
lastR = ca.getLastRow();
if(cell.getRowIndex() >= firstR && cell.getRowIndex() <= lastR)
{
if(cell.getColumnIndex() >= firstC && cell.getColumnIndex() <= lastC)
{
Row fRow = sheet.getRow(firstR);
Cell fCell = fRow.getCell(firstC);
cellValue = getCellValue(fCell);
break;
}
}
else
{
cellValue = "";
}
}
return cellValue;
}
/**
* 获取合并单元格的值
* @param sheet
* @param row
* @param column
* @return
*/
public String getMergedRegionValue(Sheet sheet, int row, int column){
int sheetMergeCount = sheet.getNumMergedRegions();
for(int i = 0 ; i < sheetMergeCount ; i++){
CellRangeAddress ca = sheet.getMergedRegion(i);
int firstColumn = ca.getFirstColumn();
int lastColumn = ca.getLastColumn();
int firstRow = ca.getFirstRow();
int lastRow = ca.getLastRow();
if(row >= firstRow && row <= lastRow){
if(column >= firstColumn && column <= lastColumn){
Row fRow = sheet.getRow(firstRow);
Cell fCell = fRow.getCell(firstColumn);
return getCellValue(fCell) ;
}
}
}
return null ;
}
/**
* 判断指定的单元格是否是合并单元格
* @param sheet
* @param row 行下标
* @param column 列下标
* @return
*/
private boolean isMergedRegion(Sheet sheet, int row, int column) {
int sheetMergeCount = sheet.getNumMergedRegions();
for (int i = 0; i < sheetMergeCount; i++) {
CellRangeAddress range = sheet.getMergedRegion(i);
int firstColumn = range.getFirstColumn();
int lastColumn = range.getLastColumn();
int firstRow = range.getFirstRow();
int lastRow = range.getLastRow();
if(row >= firstRow && row <= lastRow){
if(column >= firstColumn && column <= lastColumn){
return true;
}
}
}
return false;
}
}