pom.xml加入依赖
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.17</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.17</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.4</version>
</dependency>
package com.testweb.utils;
import java.io.InputStream;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;
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";
private final static String excel2007U = ".xlsx";
public List<List<Object>> getListByExcel(InputStream in ,String fileName) throws Exception{ //file.getInputStream();
List<List<Object>> listob = null;
//创建excel工作簿
Workbook work = this.getWorkbook(in, fileName);
if(null == work) {
throw new Exception("创建Excel工作簿为空");
}
Sheet sheet = null;
Row row = null;
Cell cell = null;
listob = 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中所有的行
//sheet.getFirstRowNum() 第一行为标题
for (int j = 1; j < sheet.getLastRowNum(); j++) {
row = sheet.getRow(j);
if(row==null) {continue;} //|| row.getFirstCellNum()==j
//遍历所有的列
List<Object> li = new ArrayList<Object>();
//row.getFirstCellNum()
for (int k = 0; k < row.getLastCellNum(); k++) {
cell = row.getCell(k);
li.add(this.getCellValue(cell));
}
listob.add(li);
}
}
work.close();
return listob;
}
/**
* 描述:根据文件后缀,自适应上传文件的版本
* @param in
* @param fileName
* @return
* @throws Exception
*/
public Workbook getWorkbook(InputStream in ,String fileName) throws Exception {
Workbook wb = null;
String fileType = fileName.substring(fileName.lastIndexOf("."));
if(excel2003L.equals(fileType)) {
wb = new HSSFWorkbook(in);
}else if(excel2007U.equals(fileType)) {
wb = new XSSFWorkbook(in);
}else {
throw new Exception("解析的文件有误!");
}
return wb;
}
/**
* 描述:对表格中的值进行格式化
*/
public Object getCellValue(Cell cell) {
Object value = null;
DecimalFormat df = new DecimalFormat("0"); //格式化number String字符串
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); //日期格式化
DecimalFormat df2 = new DecimalFormat("0.00"); //格式化数字
if(cell==null) {
value = "";
return value;
}
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 = df2.format(cell.getDateCellValue());
}else {
value = df2.format(cell.getNumericCellValue());
}
break;
case Cell.CELL_TYPE_BOOLEAN:
value = cell.getBooleanCellValue();
case Cell.CELL_TYPE_BLANK:
value = "";
break;
default:
break;
}
return value;
}
}