使用poi操作EXCEL

在网上找到的一个很好的poi DEMO ，本地测试已通过，感谢原作者！需要的Jar包附件已上传，

要注意的是，除了最基本的poi-3.9.jar，操作2007版本的excel时还要用到poi-ooxml-3.9、poi-ooxml-schemas-3.9、还需要一些包的支持：xmlbeans-2.3.0、dom4j-1.6.1、junit-4.1。

 

 

package com.weil.poi.excel;

import java.io.File;
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.Arrays;
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.weil.poi.bean.Student;

public class GenerateExcel {   
	private static String xls2003 = "D:\\Book1.xls";   
	private static String xlsx2007 = "D:\\Book1.xlsx";   
	private static List<Student> studentList = null;   
	private static Student[] students = new Student[4];   
	/**  
	 * 静态块初始化数据  
	 */  
	static {   
		studentList = new ArrayList<Student>();   
		students[0] = new Student("张三", "男", 23, "一班", 94);   
		students[1] = new Student("李四", "女", 20, "一班", 92);   
		students[2] = new Student("王五", "男", 21, "一班", 87);   
		students[3] = new Student("赵六", "女", 22, "一班", 83);   
		studentList.addAll(Arrays.asList(students));   
	}   
	/**  
	 * 创建2003文件的方法  
     *   
	 * @param filePath  
	 */  
	public static void generateExcel2003(String filePath) {   
		// 先创建工作簿对象   
		HSSFWorkbook workbook2003 = new HSSFWorkbook();   
		// 创建工作表对象并命名   
		HSSFSheet sheet = workbook2003.createSheet("学生信息统计表");   
		// 遍历集合对象创建行和单元格   
		for (int i = 0; i < studentList.size(); i++) {   
			// 取出Student对象   
			Student student = studentList.get(i);   
			// 创建行   
			HSSFRow row = sheet.createRow(i);   
			// 开始创建单元格并赋值   
			HSSFCell nameCell = row.createCell(0);   
			nameCell.setCellValue(student.getName());   
			HSSFCell genderCell = row.createCell(1);   
			genderCell.setCellValue(student.getGender());   
			HSSFCell ageCell = row.createCell(2);   
			ageCell.setCellValue(student.getAge());   
			HSSFCell sclassCell = row.createCell(3);   
			sclassCell.setCellValue(student.getSclass());   
			HSSFCell scoreCell = row.createCell(4);   
			scoreCell.setCellValue(student.getScore());   
		}   
		// 生成文件   
		File file = new File(filePath);   
		FileOutputStream fos = null;   
		try {   
			fos = new FileOutputStream(file);   
			workbook2003.write(fos);   
		} catch (Exception e) {   
			e.printStackTrace();   
		} finally {   
			if (fos != null) {   
				try {   
					fos.close();   
				} catch (Exception e) {   
					e.printStackTrace();   
				}   
			}   
		}   
	}   
	
	
	/**  
	 * 创建2007文件的方法  
     *   
	 * @param filePath  
	 */  
	public static void generateExcel2007(String filePath) {   
		// 先创建工作簿对象   
		XSSFWorkbook workbook2003 = new XSSFWorkbook();   
		// 创建工作表对象并命名   
		XSSFSheet sheet = workbook2003.createSheet("学生信息统计表");   
		// 遍历集合对象创建行和单元格   
		for (int i = 0; i < studentList.size(); i++) {   
			// 取出Student对象   
			Student student = studentList.get(i);   
			// 创建行   
			XSSFRow row = sheet.createRow(i);   
			// 开始创建单元格并赋值   
			XSSFCell nameCell = row.createCell(0);   
			nameCell.setCellValue(student.getName());   
			XSSFCell genderCell = row.createCell(1);   
			genderCell.setCellValue(student.getGender());   
			XSSFCell ageCell = row.createCell(2);   
			ageCell.setCellValue(student.getAge());   
			XSSFCell sclassCell = row.createCell(3);   
			sclassCell.setCellValue(student.getSclass());   
			XSSFCell scoreCell = row.createCell(4);   
			scoreCell.setCellValue(student.getScore());   
		}   
		// 生成文件   
		File file = new File(filePath);   
		FileOutputStream fos = null;   
		try {   
			fos = new FileOutputStream(file);   
			workbook2003.write(fos);   
		} catch (Exception e) {   
			e.printStackTrace();   
		} finally {   
			if (fos != null) {   
				try {   
					fos.close();   
				} catch (Exception e) {   
					e.printStackTrace();   
				}   
			}   
		}   
	}   
	/**  
	 * 主函数  
	 *   
	 * @param args  
	 */  
	public static void main(String[] args) {   
		long start = System.currentTimeMillis();   
		generateExcel2007(xlsx2007);   
		long end = System.currentTimeMillis();   
		System.out.println((end - start) + " ms done!");   
	}   
}  

 

 

 

 

package com.weil.poi.excel;
import java.io.File;
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.weil.poi.bean.Student;


public class ReadExcel {   
	private static String xls2003 = "D:\\Book1.xls";  
	private static String xls2007 = "D:\\Book1.xlsx";  
	/**  
	 * 读取Excel2003的示例方法  
	 *   
	 * @param filePath  
	 * @return  
	 */  
	private static List<Student> readFromXLS2003(String filePath) {   
		File excelFile = null;// Excel文件对象   
		InputStream is = null;// 输入流对象   
		String cellStr = null;// 单元格，最终按字符串处理   
		List<Student> studentList = new ArrayList<Student>();// 返回封装数据的List   
		Student student = null;// 每一个学生信息对象   
		try {   
			excelFile = new File(filePath);   
			is = new FileInputStream(excelFile);// 获取文件输入流   
			HSSFWorkbook workbook2003 = new HSSFWorkbook(is);// 创建Excel2003文件对象   
			HSSFSheet sheet = workbook2003.getSheetAt(0);// 取出第一个工作表，索引是0   
			// 开始循环遍历行，表头不处理，从1开始   
			for (int i = 1; i <= sheet.getLastRowNum(); i++) {   
				student = new Student();// 实例化Student对象   
				HSSFRow row = sheet.getRow(i);// 获取行对象   
				if (row == null) {// 如果为空，不处理   
					continue;   
				}   
				// 循环遍历单元格   
				for (int j = 0; j < row.getLastCellNum(); j++) {   
					HSSFCell cell = row.getCell(j);// 获取单元格对象   
					if (cell == null) {// 单元格为空设置cellStr为空串   
						cellStr = "";   
					} else if (cell.getCellType() == HSSFCell.CELL_TYPE_BOOLEAN) {// 对布尔值的处理   
						cellStr = String.valueOf(cell.getBooleanCellValue());   
					} else if (cell.getCellType() == HSSFCell.CELL_TYPE_NUMERIC) {// 对数字值的处理   
						cellStr = cell.getNumericCellValue() + "";   
					} else {// 其余按照字符串处理   
						cellStr = cell.getStringCellValue();   
					}   
					// 下面按照数据出现位置封装到bean中   
					if (j == 0) {   
						student.setName(cellStr);   
					} else if (j == 1) {   
						student.setGender(cellStr);   
					} else if (j == 2) {   
						student.setAge(new Double(cellStr).intValue());   
					} else if (j == 3) {   
						student.setSclass(cellStr);   
					} else {   
						student.setScore(new Double(cellStr).intValue());   
					}   
				}   
				studentList.add(student);// 数据装入List   
			}   
		} catch (IOException e) {   
			e.printStackTrace();   
		} finally {// 关闭文件流   
			if (is != null) {   
				try {   
					is.close();   
				} catch (IOException e) {   
					e.printStackTrace();   
				}   
			}   
		}   
		return studentList;   
	}   
	
	
	/**  
	 * 读取Excel2007的示例方法  
	 *   
	 * @param filePath  
	 * @return  
	 */ 
	public static List<Student> readFromXLSX2007(String filePath) {   
		        File excelFile = null;// Excel文件对象   
		        InputStream is = null;// 输入流对象   
		        String cellStr = null;// 单元格，最终按字符串处理   
		        List<Student> studentList = new ArrayList<Student>();// 返回封装数据的List   
		        Student student = null;// 每一个学生信息对象   
		        try {   
		            excelFile = new File(filePath);   
		            is = new FileInputStream(excelFile);// 获取文件输入流   
		            XSSFWorkbook workbook2007 = new XSSFWorkbook(is);// 创建Excel2003文件对象   
		            XSSFSheet sheet = workbook2007.getSheetAt(0);// 取出第一个工作表，索引是0   
		            // 开始循环遍历行，表头不处理，从1开始   
		            for (int i = 1; i <= sheet.getLastRowNum(); i++) {   
		                student = new Student();// 实例化Student对象   
		                XSSFRow row = sheet.getRow(i);// 获取行对象   
		                if (row == null) {// 如果为空，不处理   
		                    continue;   
		                }   
		                // 循环遍历单元格   
		                for (int j = 0; j < row.getLastCellNum(); j++) {   
		                    XSSFCell cell = row.getCell(j);// 获取单元格对象   
		                    if (cell == null) {// 单元格为空设置cellStr为空串   
		                        cellStr = "";   
		                    } else if (cell.getCellType() == HSSFCell.CELL_TYPE_BOOLEAN) {// 对布尔值的处理   
		                        cellStr = String.valueOf(cell.getBooleanCellValue());   
		                    } else if (cell.getCellType() == HSSFCell.CELL_TYPE_NUMERIC) {// 对数字值的处理   
		                        cellStr = cell.getNumericCellValue() + "";   
		                    } else {// 其余按照字符串处理   
		                        cellStr = cell.getStringCellValue();   
		                    }   
		                    // 下面按照数据出现位置封装到bean中   
		                    if (j == 0) {   
		                        student.setName(cellStr);   
		                    } else if (j == 1) {   
		                        student.setGender(cellStr);   
		                    } else if (j == 2) {   
		                        student.setAge(new Double(cellStr).intValue());   
		                    } else if (j == 3) {   
		                        student.setSclass(cellStr);   
		                    } else {   
		                        student.setScore(new Double(cellStr).intValue());   
		                    }   
		                }   
		                studentList.add(student);// 数据装入List   
		            }   
		        } catch (IOException e) {   
		            e.printStackTrace();   
		        } finally {// 关闭文件流   
		            if (is != null) {   
		                try {   
		                    is.close();   
		                } catch (IOException e) {   
		                    e.printStackTrace();   
		                }   
		            }   
		        }   
		        return studentList;   
		    }  

	/**  
	 * 主函数  
	 *   
	 * @param args  
	 */  
	public static void main(String[] args) {   
		long start = System.currentTimeMillis();   
		List<Student> list = readFromXLSX2007(xls2007);   
		for (Student student : list) {   
			System.out.println(student);   
		}   
		long end = System.currentTimeMillis();   
		System.out.println((end - start) + " ms done!");   
	}   
}