jxl导出Excel文件

一、java项目实现读取Excel文件和导出Excel文件

实现读取和导出Excel文件的代码：

package servlet;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import jxl.Cell;
import jxl.Sheet;
import jxl.Workbook;
import jxl.format.Alignment;
import jxl.format.Border;
import jxl.format.BorderLineStyle;
import jxl.format.CellFormat;
import jxl.format.Colour;
import jxl.read.biff.BiffException;
import jxl.write.Label;
import jxl.write.WritableCellFormat;
import jxl.write.WritableFont;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
import jxl.write.WriteException;
public class Excel {

	/**
	 * @param args
	 * Excel读写程序
	 * @throws IOException
	 * @throws BiffException
	 */
	public static void main(String[] args) throws BiffException, IOException {
		//导出Excel文件
		writeExcel();
		//读取Excel文件
		//readExcel();
	}

	//读Excel文件
	public static void readExcel() throws BiffException, IOException{
		 //创建一个list 用来存储读取的内容
		  List list = new ArrayList();
		  Workbook rwb = null;
		  Cell cell = null;

		  //创建输入流
		  InputStream stream = new FileInputStream("d:\\testJXL.xls");

		  //获取Excel文件对象
		  rwb = Workbook.getWorkbook(stream);

		  //获取文件的指定工作表 默认的第一个
		  Sheet sheet = rwb.getSheet(0);  

		  //行数(表头的目录不需要，从1开始)
		  for(int i=0; i<sheet.getRows(); i++){

		   //创建一个数组 用来存储每一列的值
		   String[] str = new String[sheet.getColumns()];

		   //列数
		   for(int j=0; j<sheet.getColumns(); j++){

		    //获取第i行，第j列的值
		    cell = sheet.getCell(j,i);
		    str[j] = cell.getContents();

		   }
		   //把刚获取的列存入list
		   list.add(str);
		  }
		  for(int i=0;i<list.size();i++){
			  String[] str = (String[])list.get(i);
			  for(int j=0;j<str.length;j++){
				  System.out.println(str[j]);
			  }
		  }
		}

	/**
	 * 写Excel文件
	 */
	public static void writeExcel() {
		String[] title = { "编号", "产品名称", "产品价格", "产品数量", "生产日期", "产地", "是否出口" };
		try {
			// 获得开始时间
			long start = System.currentTimeMillis();
			// 输出的excel的路径
			String filePath = "e:\\testJXL.xls";
			// 创建Excel工作薄
			WritableWorkbook wwb;
			// 新建立一个jxl文件,即在d盘下生成testJXL.xls
			OutputStream os = new FileOutputStream(filePath);
			wwb = Workbook.createWorkbook(os);
			// 添加第一个工作表并设置第一个Sheet的名字
			WritableSheet sheet = wwb.createSheet("产品清单", 0);
			Label label;
			for (int i = 0; i < title.length; i++) {
				// Label(x,y,z) 代表单元格的第x+1列，第y+1行, 内容z
				// 在Label对象的子对象中指明单元格的位置和内容
				//label = new Label(i, 0, title[i]);
				label = new Label(i, 0, title[i], getHeader());
				// 将定义好的单元格添加到工作表中
				sheet.addCell(label);
			}
			// 下面是填充数据
			/*
			 * 保存数字到单元格，需要使用jxl.write.Number 必须使用其完整路径，否则会出现错误
			 */
			// 填充产品编号
			jxl.write.Number number = new jxl.write.Number(0, 1, 20071001);
			sheet.addCell(number);
			// 填充产品名称
			label = new Label(1, 1, "金鸽瓜子");
			sheet.addCell(label);
			/*
			 * 定义对于显示金额的公共格式 jxl会自动实现四舍五入 例如 2.456会被格式化为2.46,2.454会被格式化为2.45
			 */
			jxl.write.NumberFormat nf = new jxl.write.NumberFormat("#,###.00");
			jxl.write.WritableCellFormat wcf = new jxl.write.WritableCellFormat(nf);
			// 填充产品价格
			jxl.write.Number nb = new jxl.write.Number(2, 1, 200000.45, wcf);
			sheet.addCell(nb);
			// 填充产品数量
			jxl.write.Number numb = new jxl.write.Number(3, 1, 200);
			sheet.addCell(numb);
			/*
			 * 定义显示日期的公共格式 如:yyyy-MM-dd hh:mm
			 */
			SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
			String newdate = sdf.format(new Date());
			// 填充出产日期
			label = new Label(4, 1, newdate);
			sheet.addCell(label);
			// 填充产地
			label = new Label(5, 1, "陕西西安");
			sheet.addCell(label);
			/*
			 * 显示布尔值
			 */
			jxl.write.Boolean bool = new jxl.write.Boolean(6, 1, true);
			sheet.addCell(bool);
			/*
			 * 合并单元格 通过writablesheet.mergeCells(int x,int y,int m,int n);来实现的
			 * 表示将从第x+1列，y+1行到m+1列，n+1行合并
			 */
			sheet.mergeCells(0, 3, 2, 3);
			label = new Label(0, 3, "合并了三个单元格");
			sheet.addCell(label);
			/*
			 *
			 * 定义公共字体格式 通过获取一个字体的样式来作为模板 首先通过web.getSheet(0)获得第一个sheet
			 * 然后取得第一个sheet的第二列，第一行也就是"产品名称"的字体
			 */
			CellFormat cf = wwb.getSheet(0).getCell(1, 0).getCellFormat();
			WritableCellFormat wc = new WritableCellFormat();
			// 设置居中
			wc.setAlignment(Alignment.CENTRE);
			// 设置边框线
			wc.setBorder(Border.ALL, BorderLineStyle.THIN);
			// 设置单元格的背景颜色
			wc.setBackground(jxl.format.Colour.RED);
			label = new Label(1, 5, "字体", wc);
			sheet.addCell(label);

			// 设置字体
			jxl.write.WritableFont wfont = new jxl.write.WritableFont(WritableFont.createFont("隶书"), 20);
			WritableCellFormat font = new WritableCellFormat(wfont);
			label = new Label(2, 6, "隶书", font);
			sheet.addCell(label);

			// 写入数据
			wwb.write();
			// 关闭文件
			wwb.close();
			long end = System.currentTimeMillis();
			System.out.println("----完成该操作共用的时间是:" + (end - start) / 1000);
		} catch (Exception e) {
			System.out.println("---出现异常---");
			e.printStackTrace();
		}
	}

	/**
	 * 设置头的样式
	 * @return
	 */
	public static WritableCellFormat getHeader() {
		WritableCellFormat format = null;
		try {
			WritableFont font = new WritableFont(WritableFont.TIMES, 10, WritableFont.BOLD);// 定义字体
			font.setColour(Colour.BLUE);// 蓝色字体
			format = new WritableCellFormat(font);
			format.setAlignment(jxl.format.Alignment.CENTRE);// 左右居中
			format.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);// 上下居中
			format.setBorder(Border.ALL, BorderLineStyle.THIN, Colour.BLACK);// 黑色边框
			format.setBackground(Colour.YELLOW);// 黄色背景
		} catch (WriteException e) {
			e.printStackTrace();
		}
		return format;
	}
}

导出结果:

二、web项目中实现导出Excel文件

2.1、新建动态web项目

新建项目后在项目中添加jxl-2.6.jar文件和servlet-api.jar文件。

2.2、新建数据实体对象Member.java

package entity;

import java.util.Date;
public class Member implements java.io.Serializable {

	// Fields

	private String id;

	private String checkOrg;

	private String sn;

	private String memberName;

	private String sex;

	private String cardId;

	private String duty;

	private String title;

	private String academic;

	private String special;

	private String workTime;

	private String memo;

	private String role;

	private Date lastModify;

    private Date regTime;

	// Constructors

	/** default constructor */
	public Member() {
	}

	/** full constructor */
	public Member(String checkOrg, String sn, String memberName, String sex,
			String cardId, String duty, String title, String academic,
			String special, String workTime, String memo, String role, Date lastModify, Date regTime) {
		this.checkOrg = checkOrg;
		this.sn = sn;
		this.memberName = memberName;
		this.sex = sex;
		this.cardId = cardId;
		this.duty = duty;
		this.title = title;
		this.academic = academic;
		this.special = special;
		this.workTime = workTime;
		this.memo = memo;
		this.role = role;
		this.lastModify = lastModify;
		this.regTime = regTime;
	}

	// Property accessors

	public String getId() {
		return this.id;
	}

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

	public String getCheckOrg() {
		return this.checkOrg;
	}

	public void setCheckOrg(String checkOrg) {
		this.checkOrg = checkOrg;
	}

	public String getSn() {
		return this.sn;
	}

	public void setSn(String sn) {
		this.sn = sn;
	}

	public String getMemberName() {
		return this.memberName;
	}

	public void setMemberName(String memberName) {
		this.memberName = memberName;
	}

	public String getSex() {
		return this.sex;
	}

	public void setSex(String sex) {
		this.sex = sex;
	}

	public String getCardId() {
		return this.cardId;
	}

	public void setCardId(String cardId) {
		this.cardId = cardId;
	}

	public String getDuty() {
		return this.duty;
	}

	public void setDuty(String duty) {
		this.duty = duty;
	}

	public String getTitle() {
		return this.title;
	}

	public void setTitle(String title) {
		this.title = title;
	}

	public String getAcademic() {
		return this.academic;
	}

	public void setAcademic(String academic) {
		this.academic = academic;
	}

	public String getSpecial() {
		return this.special;
	}

	public void setSpecial(String special) {
		this.special = special;
	}

	public String getWorkTime() {
		return this.workTime;
	}

	public void setWorkTime(String workTime) {
		this.workTime = workTime;
	}

	public String getMemo() {
		return this.memo;
	}

	public void setMemo(String memo) {
		this.memo = memo;
	}

	public String getRole() {
		return this.role;
	}

	public void setRole(String role) {
		this.role = role;
	}

	public Date getLastModify() {
		return lastModify;
	}

	public void setLastModify(Date lastModify) {
		this.lastModify = lastModify;
	}

	public Date getRegTime() {
		return regTime;
	}

	public void setRegTime(Date regTime) {
		this.regTime = regTime;
	}

}

2.3、添加servlet文件:ExportExlServlet.java

package servlet;

import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import jxl.Workbook;
import jxl.format.Border;
import jxl.format.BorderLineStyle;
import jxl.format.Colour;
import jxl.format.VerticalAlignment;
import jxl.read.biff.BiffException;
import jxl.write.Label;
import jxl.write.WritableCellFormat;
import jxl.write.WritableFont;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
import jxl.write.WriteException;
import jxl.write.biff.RowsExceededException;
import entity.Member;

public class ExportExlServlet extends HttpServlet {

	private WritableWorkbook wwb = null;

	private WritableSheet sheet = null;

	private WritableSheet sheetk = null;

	private WritableSheet sheeth = null;

	@Override
	protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		String checkOrgId = null;
		String orgName = "XX单位";
		try {
			exportCheckOrgMember(checkOrgId, orgName, response);
		} catch (RowsExceededException e) {
			e.printStackTrace();
		} catch (WriteException e) {
			e.printStackTrace();
		}
		exportExcel(response, wwb, orgName + "人员明细表");
	}

	/**
	 * 导出数据处理
	 * @param checkOrgId
	 * @param orgName
	 * @param response
	 * @throws IOException
	 * @throws RowsExceededException
	 * @throws WriteException
	 */

	private void exportCheckOrgMember(String checkOrgId,String orgName, HttpServletResponse response)
			throws IOException, RowsExceededException, WriteException {
		//此处listMember需要从数据库中取值
		List<Member> listMember = new ArrayList<Member>();
		Member member1 = new Member("str", "str", "str", "str", "str", "str", "str", "str", "str", "str", "隶书", "str", new Date(), new Date());
		listMember.add(member1);
		listMember.add(member1);
		listMember.add(member1);
		System.out.println(listMember.size()+"***");

		response.setContentType("application/ms-excel");
		String sheetName_ = orgName + "人员明细表";//文件名==》XX人员明细表
		String sheetName = new String(sheetName_.getBytes(),"iso8859-1");

		response.addHeader("Content-Disposition", "attachment;filename="+ sheetName + ".xls");

		OutputStream os = response.getOutputStream();
		wwb = Workbook.createWorkbook(os);
		wwb.setProtected(false);

		//EXECL中的一个sheet
		sheetk = wwb.createSheet("人员明细", 0);

		//============设置execl表的一些属性===========
		WritableFont wf = new WritableFont(WritableFont.ARIAL, 13,WritableFont.BOLD, false);
		WritableCellFormat wcf = new WritableCellFormat(wf);
		WritableFont wf1 = new WritableFont(WritableFont.ARIAL, 13,WritableFont.NO_BOLD, false);
		WritableCellFormat wcf1 = new WritableCellFormat(wf1);
		wcf.setBorder(Border.ALL, BorderLineStyle.THIN, Colour.BLACK);
		wcf.setVerticalAlignment(VerticalAlignment.CENTRE);
		wcf1.setBorder(Border.ALL, BorderLineStyle.THIN, Colour.BLACK);
		wcf1.setVerticalAlignment(VerticalAlignment.CENTRE);
		//============设置execl表的一些属性======END=====

		/*sheetk.mergeCells(0, 0, 9, 0);
		sheetk.addCell(new Label(0, 0, "人员明细表《这是合并的单元格》", wcf));

		//添加单元格  new Label(列位置，行位置，单元格内容，WritableCellFormat对象)
		//此处第二个参数1，代表第二行，上面合并的单元格是第一行
		sheetk.addCell(new Label(0, 1, "序号", wcf));
		sheetk.addCell(new Label(1, 1, "姓名", wcf));
		sheetk.addCell(new Label(2, 1, "性别", wcf));
		sheetk.addCell(new Label(3, 1, "身份证号", wcf));
		sheetk.addCell(new Label(4, 1, "学历", wcf));
		sheetk.addCell(new Label(5, 1, "专业", wcf));
		sheetk.addCell(new Label(6, 1, "职称", wcf));
		sheetk.addCell(new Label(7, 1, "职务", wcf));
		sheetk.addCell(new Label(8, 1, "角色", wcf));
		sheetk.addCell(new Label(9, 1, "备注", wcf));*/

		String[] title = {"编号", "姓名", "性别", "身份证号", "学历", "专业", "职称", "职务", "角色", "备注"};
		Label label;
		for (int i = 0; i < title.length; i++) {
			// Label(x,y,z) 代表单元格的第x+1列，第y+1行, 内容z
			// 在Label对象的子对象中指明单元格的位置和内容
			//label = new Label(i, 0, title[i]);
			label = new Label(i, 0, title[i], Excel.getHeader());
			// 将定义好的单元格添加到工作表中
			sheetk.addCell(label);
		}
		// 设置字体

		jxl.write.WritableFont wfont = new jxl.write.WritableFont(WritableFont.createFont("隶书"), 20);
		WritableCellFormat font = new WritableCellFormat(wfont);
		//循环数据，将数据填充到单元格内
		int t = 1;
		for (Member member:listMember) {
			sheetk.addCell(new Label(0, t, t+"", wcf1));
			sheetk.addCell(new Label(1, t, member.getMemberName(), wcf1));
			sheetk.addCell(new Label(2, t, member.getSex(), wcf1));
			sheetk.addCell(new Label(3, t, member.getCardId(), wcf1));
			sheetk.addCell(new Label(4, t, member.getAcademic(), wcf1));
			sheetk.addCell(new Label(5, t, member.getSpecial(), wcf1));
			sheetk.addCell(new Label(6, t, member.getTitle(), wcf1));
			sheetk.addCell(new Label(7, t, member.getDuty(), wcf1));
			sheetk.addCell(new Label(8, t, member.getRole(), wcf1));
			sheetk.addCell(new Label(9, t, member.getMemo(), font));
			t++;
		}
	}

	/*
	 * 执行导出操作
	 */
	private void exportExcel(HttpServletResponse response,
			WritableWorkbook retValue, String filename) {
		response.setContentType("application/ms-excel");
		/*response.addHeader("Content-Disposition", "attachment; filename="
				+ filename + ".xls");*/
		try {
			retValue.write();
			retValue.close();
		} catch (IOException e) {
			e.printStackTrace();
		} catch (WriteException e) {
			e.printStackTrace();
		}
	}
}

2.4、在web.xml文件中添加servlet配置:

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
	xmlns="http://java.sun.com/xml/ns/javaee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
	http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  <display-name></display-name>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  <servlet>
  	<servlet-name>ExportExlServlet</servlet-name>
  	<servlet-class>servlet.ExportExlServlet</servlet-class>
  </servlet>
  <servlet-mapping>
  	<servlet-name>ExportExlServlet</servlet-name>
  	<url-pattern>/ExportExlServlet</url-pattern>
  </servlet-mapping>
</web-app>

2.5、添加index.jsp请求servlet

<body>
    This is my JSP page. <br>
    <a href="ExportExlServlet">导出数据</a>
  </body>

　　导出结果:

源码下载地址:https://github.com/ablejava/Jxl-Excel