本文实例为大家分享了Java使用poi操作excel的具体代码，供大家参考，具体内容如下

依赖poi的jar包，pom.xml配置如下：

<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>excelDemo1</groupId> <artifactId>excelDemo1</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>excelDemo1 Maven Webapp</name> <url>http://maven.apache.org</url> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <version>3.8</version> </dependency> </dependencies> <build> <finalName>excelDemo1</finalName> </build> </project>

相应的java测试代码分别如下：

package excelDemo1; import java.io.File; import java.io.FileOutputStream; import java.io.OutputStream; import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; public class ExcelDemo0 { /** * java生成excel文件并写入磁盘 * * @author：tuzongxun * @Title: main * @param@param args * @return void * @date Apr 28,2016 7:32:52 PM * @throws */ public static void main(String[] args) { //C:\Users\tuzongxun123\Desktop桌面，windows和linux的斜杠不一样，而且java对于“/”需要转义处理，File.separator可以实现跨平台 File file = new File("C:" + File.separator + "Users" + File.separator + "tuzongxun123" + File.separator + "Desktop" + File.separator + "ioFile" + File.separator + "user.xls"); try { OutputStream outputStream = new FileOutputStream(file); // 创建excel文件，注意这里的hssf是excel2007及以前版本可用，2007版以后的不可用，要用xssf HSSFWorkbook workbook = new HSSFWorkbook(); // 创建excel工作表 HSSFSheet sheet = workbook.createSheet("user"); // 为工作表增加一行 HSSFRow row = sheet.createRow(0); // 在指定的行上增加两个单元格 row.createCell(0).setCellValue("name"); row.createCell(1).setCellValue("password"); // 调用输出流把excel文件写入到磁盘 workbook.write(outputStream); // 关闭输出流 outputStream.close(); } catch (Exception e) { e.printStackTrace(); } } } package excelDemo1; import java.io.BufferedInputStream; import java.io.File; import java.io.FileInputStream; 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.poifs.filesystem.POIFSFileSystem; /** * 读取excel文件 * * @author tuzongxun123 * */ public class ExcelDemo2 { public static void main(String[] agrs) { try { // 获取excel文件输入流 FileInputStream fileInputStream = new FileInputStream("C:" + File.separator + "Users" + File.separator + "tuzongxun123" + File.separator + "Desktop" + File.separator + "ioFile" + File.separator + "user.xls"); BufferedInputStream bufferedInputStream = newBufferedInputStream( fileInputStream); POIFSFileSystem fileSystem = new POIFSFileSystem( bufferedInputStream); // 获取excel文件 HSSFWorkbook hssfWorkbook = new HSSFWorkbook(fileSystem); // 根据名称获取指定的excel工作薄 HSSFSheet sheet = hssfWorkbook.getSheet("user"); // 这里实际上可以用sheet.rowIterator()来遍历 for (int i = 1;; i++) { HSSFRow row = sheet.getRow(i); if (row != null) { String nameString1 = row.getCell(0).getStringCellValue(); String password = row.getCell(i).getStringCellValue(); System.out.println("name:" + nameString1); System.out.println("password:" + password); bufferedInputStream.close(); } else { bufferedInputStream.close(); return; } } } catch (Exception e) { e.printStackTrace(); } } }

以上就是本文的全部内容，希望对大家学习java程序设计有所帮助。