JAVA POI 应用系列（2）--读取Excel
添加maven依赖
1 <dependency> 2 <groupId>org.apache.poi</groupId> 3 <artifactId>poi</artifactId> 4 <version>3.10-FINAL</version> 5 </dependency> 6 <dependency> 7 <groupId>org.apache.poi</groupId> 8 <artifactId>poi-ooxml</artifactId> 9 <version>3.10-FINAL</version> 10 </dependency>
实现代码：
1 package com.yanwu.www.spring_hibernate.util; 2 3 import java.io.FileInputStream; 4 import java.io.IOException; 5 import java.util.Iterator; 6 7 import org.apache.poi.hssf.usermodel.HSSFWorkbook; 8 import org.apache.poi.ss.usermodel.Cell; 9 import org.apache.poi.ss.usermodel.Row; 10 import org.apache.poi.ss.usermodel.Sheet; 11 import org.apache.poi.ss.usermodel.Workbook; 12 import org.apache.poi.xssf.usermodel.XSSFWorkbook; 13 14 public class ReadExcelFileToList { 15 public static void main(String[] args) throws IOException { 16 17 String fileName="C:\\Users\\IBM_ADMIN\\Desktop\\promotion\\a.xls"; 18 FileInputStream fis = new FileInputStream(fileName); 19 Workbook workbook = null; 20 //判断excel的两种格式xls,xlsx 21 if(fileName.toLowerCase().endsWith("xlsx")){ 22 workbook = new XSSFWorkbook(fis); 23 }else if(fileName.toLowerCase().endsWith("xls")){ 24 workbook = new HSSFWorkbook(fis); 25 } 26 27 28 //得到sheet的总数 29 int numberOfSheets = workbook.getNumberOfSheets(); 30 31 System.out.println("一共"+numberOfSheets+"个sheet"); 32 33 //循环每一个sheet 34 for(int i=0; i < numberOfSheets; i++){ 35 36 //得到第i个sheet 37 Sheet sheet = workbook.getSheetAt(i); 38 System.out.println(sheet.getSheetName()+" sheet"); 39 40 //得到行的迭代器 41 Iterator<Row> rowIterator = sheet.iterator(); 42 43 int rowCount=0; 44 //循环每一行 45 while (rowIterator.hasNext()) 46 { 47 System.out.print("第"+(rowCount++)+"行 "); 48 49 //得到一行对象 50 Row row = rowIterator.next(); 51 52 //得到列对象 53 Iterator<Cell> cellIterator = row.cellIterator(); 54 55 int columnCount=0; 56 57 //循环每一列 58 while (cellIterator.hasNext()) 59 { 60 //System.out.print("第"+(columnCount++)+"列: "); 61 62 //得到单元格对象 63 Cell cell = cellIterator.next(); 64 65 //检查数据类型 66 switch(cell.getCellType()){ 67 case Cell.CELL_TYPE_STRING: 68 System.out.print(cell.getStringCellValue()+" "); 69 break; 70 case Cell.CELL_TYPE_NUMERIC: 71 System.out.print(cell.getNumericCellValue()+" "); 72 } 73 } //end of cell iterator 74 75 System.out.println(); 76 77 } //end of rows iterator 78 79 80 81 } //end of sheets for loop 82 83 84 System.out.println("\nread excel successfully..."); 85 86 //close file input stream 87 fis.close(); 88 89 90 91 92 93 } 94 }
效果：
