poi读取excell表格

原文链接：http://blog.csdn.net/qq_37936542/article/details/79024847

最近项目需要实现一个将excell中的数据导入数据库，在网上找到这篇文章，原文地址：点击打开链接

一：导入maven依赖或相关jar包

poi-3.17.jar 下载地址：点击打开链接
poi-ooxml-3.17.jar 下载地址：点击打开链接
poi-ooxml-schemas-3.17.jar 下载地址：点击打开链接

二：编写ImportExcellUtils

package com.debo.utils;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.LinkedList;
import java.util.List;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFDateUtil;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
public class ImportExcellUtils {
/**
* 对外提供读取excel 的方法
* */
public static List<List<Object>> readExcel(File file) throws IOException {
String fileName = file.getName();
String extension = fileName.lastIndexOf(".") == -1 ? "" : fileName
.substring(fileName.lastIndexOf(".") + 1);
if ("xls".equals(extension)) {
return read2003Excel(file);
} else if ("xlsx".equals(extension)) {
return read2007Excel(file);
} else {
throw new IOException("不支持的文件类型");
}
}
/**
* 读取 office 2003 excel
*
* @throws IOException
* @throws FileNotFoundException
*/
private static List<List<Object>> read2003Excel(File file)
throws IOException {
List<List<Object>> list = new LinkedList<List<Object>>();
HSSFWorkbook hwb = new HSSFWorkbook(new FileInputStream(file));
HSSFSheet sheet = hwb.getSheetAt(0);
Object value = null;
HSSFRow row = null;
HSSFCell cell = null;
int counter = 0;
for (int i = sheet.getFirstRowNum(); counter < sheet
.getPhysicalNumberOfRows(); i++) {
row = sheet.getRow(i);
if (row == null) {
continue;
} else {
counter++;
}
List<Object> linked = new LinkedList<Object>();
for (int j = row.getFirstCellNum(); j <= row.getLastCellNum(); j++) {
cell = row.getCell(j);
if (cell == null) {
continue;
}
DecimalFormat df = new DecimalFormat("0");// 格式化 number String
// 字符
SimpleDateFormat sdf = new SimpleDateFormat(
"yyyy-MM-dd HH:mm:ss");// 格式化日期字符串
DecimalFormat nf = new DecimalFormat("0.00");// 格式化数字
switch (cell.getCellType()) {
case XSSFCell.CELL_TYPE_STRING:
System.out.println(i + "行" + j + " 列 is String type");
value = cell.getStringCellValue();
break;
case XSSFCell.CELL_TYPE_NUMERIC:
System.out.println(i + "行" + j
+ " 列 is Number type ; DateFormt:"
+ cell.getCellStyle().getDataFormatString());
if ("@".equals(cell.getCellStyle().getDataFormatString())) {
value = df.format(cell.getNumericCellValue());
} else if ("General".equals(cell.getCellStyle()
.getDataFormatString())) {
value = nf.format(cell.getNumericCellValue());
} else {
value = sdf.format(HSSFDateUtil.getJavaDate(cell
.getNumericCellValue()));
}
break;
case XSSFCell.CELL_TYPE_BOOLEAN:
System.out.println(i + "行" + j + " 列 is Boolean type");
value = cell.getBooleanCellValue();
break;
case XSSFCell.CELL_TYPE_BLANK:
System.out.println(i + "行" + j + " 列 is Blank type");
value = "";
break;
default:
System.out.println(i + "行" + j + " 列 is default type");
value = cell.toString();
}
if (value == null || "".equals(value)) {
continue;
}
linked.add(value);
}
list.add(linked);
}
return list;
}
/**
* 读取Office 2007 excel
* */
private static List<List<Object>> read2007Excel(File file)
throws IOException {
List<List<Object>> list = new LinkedList<List<Object>>();
// 构造 XSSFWorkbook 对象，strPath 传入文件路径
XSSFWorkbook xwb = new XSSFWorkbook(new FileInputStream(file));
// 读取第一章表格内容
XSSFSheet sheet = xwb.getSheetAt(0);
Object value = null;
XSSFRow row = null;
XSSFCell cell = null;
int counter = 0;
for (int i = sheet.getFirstRowNum(); counter < sheet
.getPhysicalNumberOfRows(); i++) {
row = sheet.getRow(i);
if (row == null) {
continue;
} else {
counter++;
}
List<Object> linked = new LinkedList<Object>();
for (int j = row.getFirstCellNum(); j <= row.getLastCellNum(); j++) {
cell = row.getCell(j);
if (cell == null) {
continue;
}
DecimalFormat df = new DecimalFormat("0");// 格式化 number String
// 字符
SimpleDateFormat sdf = new SimpleDateFormat(
"yyyy-MM-dd HH:mm:ss");// 格式化日期字符串
DecimalFormat nf = new DecimalFormat("0.00");// 格式化数字
switch (cell.getCellType()) {
case XSSFCell.CELL_TYPE_STRING:
System.out.println(i + "行" + j + " 列 is String type");
value = cell.getStringCellValue();
break;
case XSSFCell.CELL_TYPE_NUMERIC:
System.out.println(i + "行" + j
+ " 列 is Number type ; DateFormt:"
+ cell.getCellStyle().getDataFormatString());
if ("@".equals(cell.getCellStyle().getDataFormatString())) {
value = df.format(cell.getNumericCellValue());
} else if ("General".equals(cell.getCellStyle()
.getDataFormatString())) {
value = nf.format(cell.getNumericCellValue());
} else {
value = sdf.format(HSSFDateUtil.getJavaDate(cell
.getNumericCellValue()));
}
break;
case XSSFCell.CELL_TYPE_BOOLEAN:
System.out.println(i + "行" + j + " 列 is Boolean type");
value = cell.getBooleanCellValue();
break;
case XSSFCell.CELL_TYPE_BLANK:
System.out.println(i + "行" + j + " 列 is Blank type");
value = "";
break;
default:
System.out.println(i + "行" + j + " 列 is default type");
value = cell.toString();
}
if (value == null || "".equals(value)) {
continue;
}
linked.add(value);
}
list.add(linked);
}
return list;
}
}

三：测试

package com.debo.utils;
import java.io.File;
import java.io.IOException;
import java.util.List;
public class Test {
public static void main(String[] args) throws IOException {
File file = new File("D:/2.xlsx");
List<List<Object>> readExcel = ImportExcellUtils.readExcel(file);
for (int i = 0; i < readExcel.size(); i++) {
System.out.println(readExcel.get(i));
}
}
}

文末福利：

福利一：前端，Java，产品经理，微信小程序，Python等8G资源合集大放送：https://www.jianshu.com/p/e8197d4d9880

福利二：微信小程序入门与实战全套详细视频教程

领取方式：
如果需要学习视频，欢迎关注【编程微刊】微信公众号，回复【领取资源】一键领取以下所有干货资源，获取更多有用技术干货、文档资料。所有文档会持续更新，欢迎关注一起成长！

巴特西

poi读取excell表格

文末福利：

最新文章

热门文章