java的poi技术读取Excel[2003-2007,2010]

这篇blog主要是讲述java中poi读取excel，而excel的版本包括：2003-2007和2010两个版本， 即excel的后缀名为：xls和xlsx。

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下面是本文的项目结构：

项目中所需要的jar文件：

所用的Excel数据（2003-2007,2010都是一样的数据）

运行效果：

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源码部分：

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/Excel2010/src/com/b510/common/Common.java

 /**
  *
  */
 package com.b510.common;

 /**
  * @author Hongten
  * @created 2014-5-21
  */
 public class Common {

     public static final String OFFICE_EXCEL_2003_POSTFIX = "xls";
     public static final String OFFICE_EXCEL_2010_POSTFIX = "xlsx";

     public static final String EMPTY = "";
     public static final String POINT = ".";
     public static final String LIB_PATH = "lib";
     public static final String STUDENT_INFO_XLS_PATH = LIB_PATH + "/student_info" + POINT + OFFICE_EXCEL_2003_POSTFIX;
     public static final String STUDENT_INFO_XLSX_PATH = LIB_PATH + "/student_info" + POINT + OFFICE_EXCEL_2010_POSTFIX;
     public static final String NOT_EXCEL_FILE = " : Not the Excel file!";
     public static final String PROCESSING = "Processing...";

 }

/Excel2010/src/com/b510/excel/ReadExcel.java

 /**
  *
  */
 package com.b510.excel;

 import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.util.ArrayList;
 import java.util.List;

 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 com.b510.common.Common;
 import com.b510.excel.util.Util;
 import com.b510.excel.vo.Student;

 /**
  * @author Hongten
  * @created 2014-5-20
  */
 public class ReadExcel {

     /**
      * read the Excel file
      * @param path the path of the Excel file
      * @return
      * @throws IOException
      */
     public List<Student> readExcel(String path) throws IOException {
         if (path == null || Common.EMPTY.equals(path)) {
             return null;
         } else {
             String postfix = Util.getPostfix(path);
             if (!Common.EMPTY.equals(postfix)) {
                 if (Common.OFFICE_EXCEL_2003_POSTFIX.equals(postfix)) {
                     return readXls(path);
                 } else if (Common.OFFICE_EXCEL_2010_POSTFIX.equals(postfix)) {
                     return readXlsx(path);
                 }
             } else {
                 System.out.println(path + Common.NOT_EXCEL_FILE);
             }
         }
         return null;
     }

     /**
      * Read the Excel 2010
      * @param path the path of the excel file
      * @return
      * @throws IOException
      */
     public List<Student> readXlsx(String path) throws IOException {
         System.out.println(Common.PROCESSING + path);
         InputStream is = new FileInputStream(path);
         XSSFWorkbook xssfWorkbook = new XSSFWorkbook(is);
         Student student = null;
         List<Student> list = new ArrayList<Student>();
         // Read the Sheet
         for (int numSheet = 0; numSheet < xssfWorkbook.getNumberOfSheets(); numSheet++) {
             XSSFSheet xssfSheet = xssfWorkbook.getSheetAt(numSheet);
             if (xssfSheet == null) {
                 continue;
             }
             // Read the Row
             for (int rowNum = 1; rowNum <= xssfSheet.getLastRowNum(); rowNum++) {
                 XSSFRow xssfRow = xssfSheet.getRow(rowNum);
                 if (xssfRow != null) {
                     student = new Student();
                     XSSFCell no = xssfRow.getCell(0);
                     XSSFCell name = xssfRow.getCell(1);
                     XSSFCell age = xssfRow.getCell(2);
                     XSSFCell score = xssfRow.getCell(3);
                     student.setNo(getValue(no));
                     student.setName(getValue(name));
                     student.setAge(getValue(age));
                     student.setScore(Float.valueOf(getValue(score)));
                     list.add(student);
                 }
             }
         }
         return list;
     }

     /**
      * Read the Excel 2003-2007
      * @param path the path of the Excel
      * @return
      * @throws IOException
      */
     public List<Student> readXls(String path) throws IOException {
         System.out.println(Common.PROCESSING + path);
         InputStream is = new FileInputStream(path);
         HSSFWorkbook hssfWorkbook = new HSSFWorkbook(is);
         Student student = null;
         List<Student> list = new ArrayList<Student>();
         // Read the Sheet
         for (int numSheet = 0; numSheet < hssfWorkbook.getNumberOfSheets(); numSheet++) {
             HSSFSheet hssfSheet = hssfWorkbook.getSheetAt(numSheet);
             if (hssfSheet == null) {
                 continue;
             }
             // Read the Row
             for (int rowNum = 1; rowNum <= hssfSheet.getLastRowNum(); rowNum++) {
                 HSSFRow hssfRow = hssfSheet.getRow(rowNum);
                 if (hssfRow != null) {
                     student = new Student();
                     HSSFCell no = hssfRow.getCell(0);
                     HSSFCell name = hssfRow.getCell(1);
                     HSSFCell age = hssfRow.getCell(2);
                     HSSFCell score = hssfRow.getCell(3);
                     student.setNo(getValue(no));
                     student.setName(getValue(name));
                     student.setAge(getValue(age));
                     student.setScore(Float.valueOf(getValue(score)));
                     list.add(student);
                 }
             }
         }
         return list;
     }

     @SuppressWarnings("static-access")
     private String getValue(XSSFCell xssfRow) {
         if (xssfRow.getCellType() == xssfRow.CELL_TYPE_BOOLEAN) {
             return String.valueOf(xssfRow.getBooleanCellValue());
         } else if (xssfRow.getCellType() == xssfRow.CELL_TYPE_NUMERIC) {
             return String.valueOf(xssfRow.getNumericCellValue());
         } else {
             return String.valueOf(xssfRow.getStringCellValue());
         }
     }

     @SuppressWarnings("static-access")
     private String getValue(HSSFCell hssfCell) {
         if (hssfCell.getCellType() == hssfCell.CELL_TYPE_BOOLEAN) {
             return String.valueOf(hssfCell.getBooleanCellValue());
         } else if (hssfCell.getCellType() == hssfCell.CELL_TYPE_NUMERIC) {
             return String.valueOf(hssfCell.getNumericCellValue());
         } else {
             return String.valueOf(hssfCell.getStringCellValue());
         }
     }
 }

/Excel2010/src/com/b510/excel/client/Client.java

 /**
  *
  */
 package com.b510.excel.client;

 import java.io.IOException;
 import java.util.List;

 import com.b510.common.Common;
 import com.b510.excel.ReadExcel;
 import com.b510.excel.vo.Student;

 /**
  * @author Hongten
  * @created 2014-5-21
  */
 public class Client {

     public static void main(String[] args) throws IOException {
         String excel2003_2007 = Common.STUDENT_INFO_XLS_PATH;
         String excel2010 = Common.STUDENT_INFO_XLSX_PATH;
         // read the 2003-2007 excel
         List<Student> list = new ReadExcel().readExcel(excel2003_2007);
         if (list != null) {
             for (Student student : list) {
                 System.out.println("No. : " + student.getNo() + ", name : " + student.getName() + ", age : " + student.getAge() + ", score : " + student.getScore());
             }
         }
         System.out.println("======================================");
         // read the 2010 excel
         List<Student> list1 = new ReadExcel().readExcel(excel2010);
         if (list1 != null) {
             for (Student student : list1) {
                 System.out.println("No. : " + student.getNo() + ", name : " + student.getName() + ", age : " + student.getAge() + ", score : " + student.getScore());
             }
         }
     }
 }

/Excel2010/src/com/b510/excel/util/Util.java

 /**
  *
  */
 package com.b510.excel.util;

 import com.b510.common.Common;

 /**
  * @author Hongten
  * @created 2014-5-21
  */
 public class Util {

     /**
      * get postfix of the path
      * @param path
      * @return
      */
     public static String getPostfix(String path) {
         if (path == null || Common.EMPTY.equals(path.trim())) {
             return Common.EMPTY;
         }
         if (path.contains(Common.POINT)) {
             return path.substring(path.lastIndexOf(Common.POINT) + 1, path.length());
         }
         return Common.EMPTY;
     }
 }

/Excel2010/src/com/b510/excel/vo/Student.java

 /**
  *
  */
 package com.b510.excel.vo;

 /**
  * Student
  *
  * @author Hongten
  * @created 2014-5-18
  */
 public class Student {
     /**
      * id
      */
     private Integer id;
     /**
      * 学号
      */
     private String no;
     /**
      * 姓名
      */
     private String name;
     /**
      * 学院
      */
     private String age;
     /**
      * 成绩
      */
     private float score;

     public Integer getId() {
         return id;
     }

     public void setId(Integer id) {
         this.id = id;
     }

     public String getNo() {
         return no;
     }

     public void setNo(String no) {
         this.no = no;
     }

     public String getName() {
         return name;
     }

     public void setName(String name) {
         this.name = name;
     }

     public String getAge() {
         return age;
     }

     public void setAge(String age) {
         this.age = age;
     }

     public float getScore() {
         return score;
     }

     public void setScore(float score) {
         this.score = score;
     }

 }

相关Jar文件下载：http://pan.baidu.com/s/1mg7IG6c

源码下载：http://pan.baidu.com/s/1qWwfpDi

---------updated on 2018-08-21

源码下载：

链接: https://pan.baidu.com/s/1Sktrm4gu3aBMB1o8n_ubtA

密码: tri2

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