JAVA 导入导出EXCEL文件操作

Z时代
2024-01-10
分类：综合

java

package com.base.util;import java.io.*;import jxl.*;import jxl.write.*;import jxl.write.biff.LabelRecord;import jxl.write.biff.RowsExceededException;import jxl.format.*;import java.text.SimpleDateFormat;import java.util.*;import java.awt.Color;import jxl.write.Number;import jxl.write.Boolean;import com.cms.bean.RegUser;public class excelTest { public static List list=new ArrayList(); //输出流，X轴Y轴；自定义关联表导出// public static void writeExcel(OutputStream os,int x,int y,List content) throws Exception {// RegUser user=new RegUser();// String str="";// jxl.write.WritableWorkbook wwb = Workbook.createWorkbook(os);// jxl.write.WritableSheet ws = wwb.createSheet("Sheet", 0);// //// jxl.write.Label labelC = new jxl.write.Label(x, y,content);//// labelC = new jxl.write.Label(4, 4,content);//// // if (ws != null) {//// // 下面开始添加单元格// for (int i = 0; i < x; i++) {// // // for (int j = 0; j < y; j++) {// // 这里需要注意的是，在Excel中，第一个参数表示列，第二个表示行// user=(RegUser)content.get(i);// // if(j==0){// str=user.getUserName();// }else if(j==1){// str=user.getPassword();// }else if(j==2){// str=user.getUserContent();// }else if(j==3){// str=user.getFlag();// }else if(j==4){// str=user.getUserTime();// }else if(j==5){// str=String.valueOf(user.getId());// }// // // jxl.write.Label labelC = new Label(j, i,str);// try {// // 将生成的单元格添加到工作表中// ws.addCell(labelC);// } catch (RowsExceededException e) {// e.printStackTrace();// } catch (WriteException e) {// e.printStackTrace();// }//// }// }//// }//////// /*// * 自定义单元格内样式；// */// // jxl.write.WritableFont wfc = new// // jxl.write.WritableFont(WritableFont.ARIAL, 10, WritableFont.BOLD,// // false,UnderlineStyle.NO_UNDERLINE);// // jxl.write.WritableCellFormat wcfFC = new// // jxl.write.WritableCellFormat(wfc);// //单元格加红// //wcfFC.setBackground(jxl.format.Colour.RED);// //labelC = new jxl.write.Label(6, 0, "中国爱我 ", wcfFC);// // // // //ws.addCell(labelC);// // 写入Exel工作表// wwb.write();// // 关闭Excel工作薄对象// wwb.close();// // } //new file () /** * 读取Excel * * @param filePath */ public static void readExcel(String filePath) { String data2=""; //DateTime tem=new DateTime(""); SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd"); try { InputStream is = new FileInputStream(filePath); Workbook rwb = Workbook.getWorkbook(is); //Sheet st = rwb.getSheet("0")这里有两种方法获取sheet表,1为名字，而为下标，从0开始 Sheet st = rwb.getSheet("Sheet1"); int rs=st.getColumns(); int rows=st.getRows(); System.out.println("列数===>"+rs+"行数："+rows); for(int k=0;k<rows;k++){//行 for(int i=0 ;i<rs;i++){//列 Cell c00 = st.getCell(i,k); //通用的获取cell值的方式,返回字符串 String strc00 = c00.getContents(); //获得cell具体类型值的方式 if(c00.getType() == CellType.LABEL) { LabelCell labelc00 = (LabelCell)c00; strc00 = labelc00.getString(); } //excel 类型为时间类型处理; if(c00.getType()==CellType.DATE){ DateCell dc=(DateCell)c00; strc00 = sdf.format(dc.getDate()); } //excel 类型为数值类型处理; /* if(c00.getType()==CellType.NUMBER|| c00.getType()==CellType.NUMBER_FORMULA){ NumberCell nc=(NumberCell)c00; strc00=""+nc.getValue(); }*/ //输出 System.out.println(">"+strc00); list.add(strc00); //列，行// data2=String.valueOf(st.getCell(1,k).getContents());// data2=data2.replace("/", "-");// java.util.Date dt=sdf.parse(data2); // System.out.println(sdf.format(dt)); // } System.out.println(data2+"======"+list.get(k)+"========="); } //关闭 rwb.close(); } catch(Exception e) { e.printStackTrace(); } } /** * 输出Excel * * @param os */ public static void writeExcel(OutputStream os) { try { /** * 只能通过API提供的工厂方法来创建Workbook，而不能使用WritableWorkbook的构造函数， * 因为类WritableWorkbook的构造函数为protected类型 * method(1)直接从目标文件中读取WritableWorkbook wwb = Workbook.createWorkbook(new File(targetfile)); * method(2)如下实例所示将WritableWorkbook直接写入到输出流 */ WritableWorkbook wwb = Workbook.createWorkbook(os); //创建Excel工作表指定名称和位置 WritableSheet ws = wwb.createSheet("Test Sheet 1",0); //**************往工作表中添加数据***************** //1.添加Label对象 Label label = new Label(0,0,"this is a label test"); ws.addCell(label); //添加带有字型Formatting对象 WritableFont wf = new WritableFont(WritableFont.TIMES,18,WritableFont.BOLD,true); WritableCellFormat wcf = new WritableCellFormat(wf); Label labelcf = new Label(1,0,"this is a label test",wcf); ws.addCell(labelcf); //添加带有字体颜色的Formatting对象 WritableFont wfc = new WritableFont(WritableFont.ARIAL,10,WritableFont.NO_BOLD,false, UnderlineStyle.NO_UNDERLINE,jxl.format.Colour.RED); WritableCellFormat wcfFC = new WritableCellFormat(wfc); Label labelCF = new Label(1,0,"This is a Label Cell",wcfFC); ws.addCell(labelCF); //2.添加Number对象 Number labelN = new Number(0,1,3.1415926); ws.addCell(labelN); //添加带有formatting的Number对象 NumberFormat nf = new NumberFormat("#.##"); WritableCellFormat wcfN = new WritableCellFormat(nf); Number labelNF = new jxl.write.Number(1,1,3.1415926,wcfN); ws.addCell(labelNF); //3.添加Boolean对象 Boolean labelB = new jxl.write.Boolean(0,2,false); ws.addCell(labelB); //4.添加DateTime对象 jxl.write.DateTime labelDT = new jxl.write.DateTime(0,3,new java.util.Date()); ws.addCell(labelDT); //添加带有formatting的DateFormat对象 DateFormat df = new DateFormat("dd MM yyyy hh:mm:ss"); WritableCellFormat wcfDF = new WritableCellFormat(df); DateTime labelDTF = new DateTime(1,3,new java.util.Date(),wcfDF); ws.addCell(labelDTF); //添加图片对象,jxl只支持png格式图片 File image = new File("d://2.png"); WritableImage wimage = new WritableImage(0,1,2,2,image); ws.addImage(wimage); //写入工作表 wwb.write(); wwb.close(); } catch(Exception e) { e.printStackTrace(); } } /** * 拷贝后,进行修改,其中file1为被copy对象，file2为修改后创建的对象 * 尽单元格原有的格式化修饰是不能去掉的，我们还是可以将新的单元格修饰加上去， * 以使单元格的内容以不同的形式表现 * @param file1 * @param file2 */ public static void modifyExcel(File file1,File file2) { try { Workbook rwb = Workbook.getWorkbook(file1); WritableWorkbook wwb = Workbook.createWorkbook(file2,rwb);//copy WritableSheet ws = wwb.getSheet(0); WritableCell wc = ws.getWritableCell(0,0); //判断单元格的类型,做出相应的转换 if(wc.getType() == CellType.LABEL) { Label label = (Label)wc; label.setString("The value has been modified"); } wwb.write(); wwb.close(); rwb.close(); } catch(Exception e) { e.printStackTrace(); } } //测试 public static void main(String[] args) { try { //读Excel excelTest.readExcel("D:/testRead.xls"); //输出Excel // File fileWrite = new File("D:/testWrite.xls"); //fileWrite.createNewFile(); //OutputStream os = new FileOutputStream(fileWrite); // excelTest.writeExcel(os); //修改Excel // excelTest.modifyExcel(new File(""),new File("")); } catch(Exception e) { e.printStackTrace(); } }}

JAVA EXCEL JAR 下载：http://download.csdn.net/source/3205282

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