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!