Pom.xml文件
<!-- poi操作excel -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.9</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.9</version>
</dependency>
Excel Util
package com.xxx.util;
import java.io.IOException;
import java.io.InputStream;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
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;
public class ImportExcelUtil {
private final static String excel2003L =".xls"; //2003- 版本的excel
private final static String excel2007U =".xlsx"; //2007+ 版本的excel
/**
* 描述：获取IO流中的数据，组装成List<List<Object>>对象
* @param in,fileName
* @return
* @throws IOException
*/
/*public List<List<Object>> getBankListByExcel(InputStream in,String fileName) throws Exception{
List<List<Object>> list = null;
//创建Excel工作薄
Workbook work = this.getWorkbook(in,fileName);
if(null == work){
throw new Exception("创建Excel工作薄为空！");
}
Sheet sheet = null;
Row row = null;
Cell cell = null;
list = new ArrayList<List<Object>>();
//遍历Excel中所有的sheet
for (int i = 0; i < work.getNumberOfSheets(); i++) {
sheet = work.getSheetAt(i);
if(sheet==null){continue;}
//遍历当前sheet中的所有行
for (int j = sheet.getFirstRowNum(); j <= sheet.getLastRowNum(); j++) {
row = sheet.getRow(j);
if(row==null||row.getFirstCellNum()==j){continue;}
//遍历所有的列
List<Object> li = new ArrayList<Object>();
for (int y = row.getFirstCellNum(); y < row.getLastCellNum(); y++) {
cell = row.getCell(y);
if(this.getCellValue(cell)=="") {
li.add(this.getCellValue( sheet.getRow(j-1).getCell(y)));
}else {
li.add(this.getCellValue(cell));
}
}
list.add(li);
}
}
return list;
} */
/**
* 读取excel文件
*
* @param in
* @param
* @return
* @throws Exception
*/
public List<Map<String,String>> getBankListByExcel(InputStream in, String fileName) throws Exception {
List<Map<String,String>> lineDownOrders = new ArrayList<>();
//创建Excel工作薄
Workbook work = this.getWorkbook(in, fileName);
if (null == work) {
throw new Exception("创建Excel工作薄为空！");
}
Sheet sheet = null;
Row row = null;
Cell cell = null;
//遍历Excel中所有的sheet
for (int i = 0; i < work.getNumberOfSheets(); i++) {
sheet = work.getSheetAt(i);
if (sheet == null) {
continue;
}
//System.out.println(sheet.getSheetName());
//遍历当前sheet中的所有行
for (int j =1; j <= sheet.getLastRowNum(); j++) {
row = sheet.getRow(j);
if (row == null ) {
continue;
}
Map<String,String> map = new HashMap<>();
//把每个单元格的值付给对象的对应属性
if (row.getCell(0)!=null){
map.put("0", String.valueOf(getCellValue(row.getCell(0))));
if(String.valueOf(getCellValue(row.getCell(0)))=="") {
map.put("0", String.valueOf(getCellValue(sheet.getRow(j-1).getCell(0))));
}
}
if (row.getCell(1)!=null){
map.put("1", String.valueOf(getCellValue(row.getCell(1))));
}
if (row.getCell(2)!=null){
map.put("2", String.valueOf(getCellValue(row.getCell(2))));
}
if (row.getCell(3)!=null){
map.put("3", String.valueOf(getCellValue(row.getCell(3))));
}
if (row.getCell(4)!=null){
map.put("4", String.valueOf(getCellValue(row.getCell(4))));
}
if (row.getCell(5)!=null){
map.put("5", String.valueOf(getCellValue(row.getCell(5))));
}
map.put("6", String.valueOf(j));
map.put("7", String.valueOf(i));
//遍历所有的列(把每一行的内容存放到对象中)
lineDownOrders.add(map);
}
}
return lineDownOrders;
}
/**
* 描述：根据文件后缀，自适应上传文件的版本
* @param inStr,fileName
* @return
* @throws Exception
*/
public Workbook getWorkbook(InputStream inStr,String fileName) throws Exception{
Workbook wb = null;
String fileType = fileName.substring(fileName.lastIndexOf("."));
if(excel2003L.equals(fileType)){
wb = new HSSFWorkbook(inStr); //2003-
}else if(excel2007U.equals(fileType)){
wb = new XSSFWorkbook(inStr); //2007+
}else{
throw new Exception("解析的文件格式有误！");
}
return wb;
}
/**
* 描述：对表格中数值进行格式化
* @param cell
* @return
*/
public Object getCellValue(Cell cell){
Object value = null;
DecimalFormat df = new DecimalFormat("0"); //格式化number String字符
SimpleDateFormat sdf = new SimpleDateFormat("yyy-MM-dd"); //日期格式化
DecimalFormat df2 = new DecimalFormat("0.00"); //格式化数字
switch (cell.getCellType()) {
case Cell.CELL_TYPE_STRING:
value = cell.getRichStringCellValue().getString();
break;
case Cell.CELL_TYPE_NUMERIC:
if("General".equals(cell.getCellStyle().getDataFormatString())){
value = df.format(cell.getNumericCellValue());
}else if("m/d/yy".equals(cell.getCellStyle().getDataFormatString())){
value = sdf.format(cell.getDateCellValue());
}else{
value = df2.format(cell.getNumericCellValue());
}
break;
case Cell.CELL_TYPE_BOOLEAN:
value = cell.getBooleanCellValue();
break;
case Cell.CELL_TYPE_BLANK:
value = "";
break;
default:
break;
}
return value;
}
}
Java文件
@RequestMapping(value="createExcelFile.do")
@ResponseBody
public String createNetMgmtFile(@RequestParam(value = "file", required = false) MultipartFile file,HttpServletRequest request) throws Exception{
String fileName = file.getOriginalFilename();
InputStream in = file.getInputStream();
List<Map<String,String>> lineDownOrders = new ImportExcelUtil().getBankListByExcel(in,fileName);
xxxService.saveExcelInfo(lineDownOrders);
return null;
}