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.<?
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
原标题：jxl导出Excel文件
关键词：excel
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