JAVA POI 教你怎样使用JAVA POI
张鹏辉 人气:0想了解教你怎样使用JAVA POI的相关内容吗,张鹏辉在本文为您仔细讲解JAVA POI的相关知识和一些Code实例,欢迎阅读和指正,我们先划重点:JAVA,POI用法,JAVA,POI,下面大家一起来学习吧。
一、导入jar包
所需jar包,在pom中添加如下坐标即可
<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>
注意:
操作Excel文件区分版本:
2003版本(包含2003)以前的扩展名为.xls需要用HSSFWorkbook类操作
2007版本(包含2007)以后的扩展名为.xlsx需要用XSSFWorkbook类操作
二、导出
2007版本(包含2007)以后的扩展名为.xlsx需要用XSSFWorkbook类操作
2003版本(包含2003)以前的扩展名为.xls需要用HSSFWorkbook类操作
和 07基本相似 就是把XSSFWorkbook换成HSSFWorkbook
后缀名改成 点xls
package com.zph.poi; import org.apache.poi.hssf.usermodel.HSSFCell; 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; import org.springframework.core.io.ClassPathResource; import org.springframework.core.io.Resource; import org.springframework.stereotype.Service; import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.net.URI; import java.net.URLEncoder; @Service public class PoiServiceImpl { public void exportExcel2007() throws IOException { //创建工作簿 类似于创建Excel文件 XSSFWorkbook workbook=new XSSFWorkbook(); //创建 sheetname页名 XSSFSheet sheet = workbook.createSheet("员工信息"); sheet.setColumnWidth(3,20*256);//给第3列设置为20个字的宽度 sheet.setColumnWidth(4,20*256);//给第4列设置为20个字的宽度 //创建一行,下标从0开始 XSSFRow row = sheet.createRow(0); //创建这行中的列,下标从0开始 (表头) XSSFCell cell = row.createCell(0); // 给cell 0下表赋值 cell.setCellValue("姓名"); //创建这行中的列,并给该列直接赋值 row.createCell(1).setCellValue("年龄"); row.createCell(2).setCellValue("性别"); row.createCell(3).setCellValue("生日"); row.createCell(4).setCellValue("手机号"); // 设置表里内容 row = sheet.createRow(1); row.createCell(0).setCellValue("T"); row.createCell(1).setCellValue("保密"); row.createCell(2).setCellValue("男"); row.createCell(3).setCellValue("保密"); row.createCell(4).setCellValue("12121212121"); row = sheet.createRow(2); row.createCell(0).setCellValue("T"); row.createCell(1).setCellValue("18"); row.createCell(2).setCellValue("女"); row.createCell(3).setCellValue("2000-01-01"); row.createCell(4).setCellValue("12121212122"); //设定 路径 File file = new File("D:\\zph\\temp\\员工信息2007.xlsx"); FileOutputStream stream = new FileOutputStream(file); // 需要抛异常 workbook.write(stream); //关流 stream.close(); } public void exportExcel2003() throws IOException { //创建工作簿 类似于创建Excel文件 HSSFWorkbook workbook=new HSSFWorkbook(); //创建 sheetname页名 HSSFSheet sheet = workbook.createSheet("员工信息"); //创建一行,下标从0开始 HSSFRow row = sheet.createRow(0); //创建这行中的列,下标从0开始 (表头) HSSFCell cell = row.createCell(0); // 给cell 0下表赋值 cell.setCellValue("姓名"); //创建这行中的列,并给该列直接赋值 row.createCell(1).setCellValue("年龄"); row.createCell(2).setCellValue("性别"); row.createCell(3).setCellValue("生日"); row.createCell(4).setCellValue("手机号"); // 设置表里内容 row = sheet.createRow(1); row.createCell(0).setCellValue("T"); row.createCell(1).setCellValue("保密"); row.createCell(2).setCellValue("男"); row.createCell(3).setCellValue("保密"); row.createCell(4).setCellValue("12121212121"); row = sheet.createRow(2); row.createCell(0).setCellValue("T"); row.createCell(1).setCellValue("18"); row.createCell(2).setCellValue("女"); row.createCell(3).setCellValue("2000-01-01"); row.createCell(4).setCellValue("12121212122"); //第一种导出 给定路径 //1设定 路径 创建文件读进来在写内容 File file = new File("D:\\zph\\temp\\员工信息2003.xls"); FileOutputStream stream = new FileOutputStream(file); // 需要抛异常 workbook.write(stream); //关流 stream.close(); } public void exportExcel2003(HttpServletRequest request, HttpServletResponse response) throws IOException { //第二种导出 从项目中获取模板 //String realPath = request.getSession().getServletContext().getRealPath("/"); Resource resource = new ClassPathResource("templates/员工信息2003Tem.xls");//jar包获取 //创建工作簿 类似于创建Excel文件 HSSFWorkbook workbookTem=new HSSFWorkbook(resource.getInputStream()); //创建 sheetname页名 HSSFSheet sheetTem = workbookTem.getSheet("员工信息"); //HSSFSheet sheetTem = workbookTem.getSheetAt(0); HSSFRow rowTem = sheetTem.createRow(1); rowTem.createCell(0).setCellValue("xmtem"); rowTem.createCell(1).setCellValue("nltem"); rowTem.createCell(2).setCellValue("xbtem"); rowTem.createCell(3).setCellValue("srtem"); rowTem.createCell(4).setCellValue("sjhtem"); ServletOutputStream outputStream = response.getOutputStream(); response.reset(); String fileName = URLEncoder.encode("员工信息TemOut.xls", "utf-8"); response.setHeader("Content-disposition","attachment;filename="+fileName); response.setContentType("application/x-download;charset=UTF-8"); // 对响应客户请求进行重新编码11 //response.setCharacterEncoding("utf-8"); workbookTem.write(outputStream); outputStream.close(); } public String exportExcel2003(String s,HttpServletRequest request, HttpServletResponse response) throws IOException { //第三种直接导出 //创建工作簿 类似于创建Excel文件 HSSFWorkbook workbookTem=new HSSFWorkbook(); //创建 sheetname页名 HSSFSheet sheet = workbookTem.createSheet("员工信息"); //创建一行,下标从0开始 HSSFRow row = sheet.createRow(0); //创建这行中的列,下标从0开始 (表头) HSSFCell cell = row.createCell(0); // 给cell 0下表赋值 cell.setCellValue("姓名"); //创建这行中的列,并给该列直接赋值 row.createCell(1).setCellValue("年龄"); row.createCell(2).setCellValue("性别"); row.createCell(3).setCellValue("生日"); row.createCell(4).setCellValue("手机号"); // 设置表里内容 row = sheet.createRow(1); row.createCell(0).setCellValue("T"); row.createCell(1).setCellValue("保密"); row.createCell(2).setCellValue("男"); row.createCell(3).setCellValue("保密"); row.createCell(4).setCellValue("12121212121"); row = sheet.createRow(2); row.createCell(0).setCellValue("T"); row.createCell(1).setCellValue("18"); row.createCell(2).setCellValue("女"); row.createCell(3).setCellValue("2000-01-01"); row.createCell(4).setCellValue("12121212122"); ServletOutputStream outputStream = response.getOutputStream(); response.reset(); String fileName = URLEncoder.encode("员工信息TemOut.xls", "utf-8"); response.setHeader("Content-disposition","attachment;filename="+fileName); //response.setContentType("application/x-download;charset=UTF-8"); response.setContentType("application/vnd.ms-excel"); //response.setContentType("application/msexcel"); // 对响应客户请求进行重新编码11 //response.setCharacterEncoding("utf-8"); workbookTem.write(outputStream); outputStream.close(); return s; } }
三、导出
@RequestMapping(value="/upload") public String uploadExcel(@RequestParam("fileData") MultipartFile file, HttpServletRequest request, HttpServletResponse response) throws Exception { InputStream in = file.getInputStream(); String s = poiService.uploadExcel(file, request, response); return s; } public String uploadExcel(MultipartFile file, HttpServletRequest request, HttpServletResponse response) throws Exception { InputStream in = file.getInputStream(); //D:\zph\temp // 多态 抛异常 //Workbook sheets = new XSSFWorkbook(stream); HSSFWorkbook sheets = new HSSFWorkbook(in); //获取一个工作表(sheet页),下标从0开始 HSSFSheet sheet = sheets.getSheetAt(0); for (int i = 1; i<=sheet.getLastRowNum() ; i++) { // 获取行数 Row row = sheet.getRow(i); // 获取单元格 取值 String value1 = row.getCell(0).getStringCellValue(); String value2 = row.getCell(1).getStringCellValue(); String value3 = row.getCell(2).getStringCellValue(); String value4 = row.getCell(3).getStringCellValue(); String value5= row.getCell(4).getStringCellValue(); System.out.println(value1); System.out.println(value2); System.out.println(value3); System.out.println(value4); System.out.println(value5); } //关流 sheets.close(); in.close(); return "hha"; }
postman 设置 post请求 请求头 Content-Type multipart/form-data
加载全部内容