要往xls文件里面写入数据的时候需要注意的是第一要新建一个xls文件
OutputStream os=new FileOutputStream("c:\\excel2.xls" );
再建完这个文件的时候再建立工作文件
jxl.write.WritableWorkbook wwb = Workbook.createWorkbook(new File(os));
如果这个文件已经存在,那么我们可以在这个文件里面加入一个sheet为了和以前的数据进行分开;
jxl.write.WritableSheet ws = wwb.createSheet("Test Sheet 1" , 0);
在createSheet方法里前面的参数是sheet名,后面是要操作的sheet号
接下来就可以往这个文件里面写入数据了
写入数据的时候注意的格式
(1)添加的字体样式
jxl.write.WritableFont wf = new jxl.write.WritableFont(WritableFont.TIMES, 18, WritableFont.BOLD, true);
WritableFont()方法里参数说明:
这个方法算是一个容器,可以放进去好多属性
第一个: TIMES是字体大小,他写的是18
第二个: BOLD是判断是否为斜体,选择true时为斜体
第三个: ARIAL
第四个: UnderlineStyle.NO_UNDERLINE 下划线
第五个: jxl.format.Colour.RED 字体颜色是红色的
jxl.write.WritableCellFormat wcfF = new jxl.write.WritableCellFormat(wf);
jxl.write.Label labelC = new jxl.write.Label(0, 0, "This is a Label cell" ,wcfF);
ws.addCell(labelC);
在Label()方法里面有三个参数
第一个是代表列数,
第二是代表行数,
第三个代表要写入的内容
第四个是可选项,是输入这个label里面的样式
然后通过写sheet的方法addCell()把内容写进sheet里面。
(2)添加带有formatting的Number对象
jxl.write.NumberFormat nf = new jxl.write.NumberFormat("#.##" );
(3)添加Number对象
(3.1)显示number对象数据的格式
jxl.write.NumberFormat nf = new jxl.write.NumberFormat("#.##" );
jxl.write.WritableCellFormat wcfN = new jxl.write.WritableCellFormat(nf);
jxl.write.Number labelNF = new jxl.write.Number(1, 1, 3.1415926, wcfN);
ws.addCell(labelNF);
Number()方法参数说明:
前两上表示输入的位置
第三个表示输入的内容
(4)添加Boolean对象
jxl.write.Boolean labelB = new jxl.write.Boolean(0, 2, false);
ws.addCell(labelB);
(5)添加DateTime对象
jxl.write.DateTime labelDT = new jxl.write.DateTime(0, 3, new java.util.Date());
ws.addCell(labelDT);
DateTime()方法的参数说明
前两个表示输入的位置
第三个表示输入的当前时间
(6)添加带有formatting的DateFormat对象
这个显示当前时间的所有信息,包括年月日小时分秒
jxl.write.DateFormat df = new jxl.write.DateFormat("dd MM yyyy hh:mm:ss" );
jxl.write.WritableCellFormat wcfDF = new jxl.write.WritableCellFormat(df);
jxl.write.DateTime labelDTF = new jxl.write.DateTime(1, 3, new java.util.Date(), wcfDF);
ws.addCell(labelDTF);
(7)添加带有字体颜色Formatting的对象
jxl.write.WritableFont wfc = new jxl.write.WritableFont(WritableFont.ARIAL, 10, WritableFont.NO_BOLD, false,UnderlineStyle.NO_UNDERLINE, jxl.format.Colour.RED);
jxl.write.WritableCellFormat wcfFC = new jxl.write.WritableCellFormat(wfc);
import="jxl.format.*
jxl.write.WritableFont wfc = new jxl.write.WritableFont(WritableFont.ARIAL,20,WritableFont.BOLD,false,UnderlineStyle.NO_UNDERLINE,jxl.format.Colour.GREEN);
(8)设置单元格样式
jxl.write.WritableCellFormat wcfFC = new jxl.write.WritableCellFormat(wfc);
wcfFC.setBackGround(jxl.format.Colour.RED);//设置单元格的颜色为红色
wcfFC = new jxl.write.Label(6,0,"i love china" ,wcfFC);
设置列宽: cw_sheet.setColumnView(0, 100);//第一个参数为第几列,第二个参数为列宽
设置行高: cw_sheet.setRowView(0, 1000);//第一个参数为第几行,第二个参数为行高
以下是部分例子:
- import jxl.*;
- import jxl.write.*;
- import java.io.*;
- import java.io.File.*;
- import java.util.*;
- public class excel
- {
- public static void main(String[] args)
- {
- String targetfile = "c:/out.xls " ; //输出的excel文件名
- String worksheet = "List" ; //输出的excel文件工作表名
- String[] title = {"ID" , "NAME" , "DESCRIB" }; //excel工作表的标题
- WritableWorkbook workbook;
- try
- {
- //创建可写入的Excel工作薄,运行生成的文件在tomcat/bin下
- //workbook = Workbook.createWorkbook(new File("output.xls"));
- System.out.println("begin" );
- OutputStream os=new FileOutputStream(targetfile);
- workbook=Workbook.createWorkbook(os);
- WritableSheet sheet = workbook.createSheet(worksheet, 0 ); //添加第一个工作表
- //WritableSheet sheet1 = workbook.createSheet("MySheet1", 1); //可添加第二个工作
- /*
- jxl.write.Label label = new jxl.write.Label(0, 2, "A label record"); //put a label in cell A3, Label(column,row)
- sheet.addCell(label);
- */
- jxl.write.Label label;
- for ( int i= 0 ; i<title.length; i++)
- {
- //Label(列号,行号 ,内容 )
- label = new jxl.write.Label(i, 0 , title[i]); //put the title in row1
- sheet.addCell(label);
- }
- //下列添加的对字体等的设置均调试通过,可作参考用
- //添加数字
- jxl.write.Number number = new jxl.write.Number( 3 , 4 , 3.14159 ); //put the number 3.14159 in cell D5
- sheet.addCell(number);
- //添加带有字型Formatting的对象
- jxl.write.WritableFont wf = new jxl.write.WritableFont(WritableFont.TIMES, 10 ,WritableFont.BOLD, true );
- jxl.write.WritableCellFormat wcfF = new jxl.write.WritableCellFormat(wf);
- jxl.write.Label labelCF = new jxl.write.Label( 4 , 4 , "文本" ,wcfF);
- sheet.addCell(labelCF);
- //添加带有字体颜色,带背景颜色 Formatting的对象
- jxl.write.WritableFont wfc = new jxl.write.WritableFont(WritableFont.ARIAL, 10 ,WritableFont.BOLD, false ,jxl.format.UnderlineStyle.NO_UNDERLINE,jxl.format.Colour.RED);
- jxl.write.WritableCellFormat wcfFC = new jxl.write.WritableCellFormat(wfc);
- wcfFC.setBackground(jxl.format.Colour.BLUE);
- jxl.write.Label labelCFC = new jxl.write.Label( 1 , 5 , "带颜色" ,wcfFC);
- sheet.addCell(labelCFC);
- //添加带有formatting的Number对象
- jxl.write.NumberFormat nf = new jxl.write.NumberFormat( "#.##" );
- jxl.write.WritableCellFormat wcfN = new jxl.write.WritableCellFormat(nf);
- jxl.write.Number labelNF = new jxl.write.Number( 1 , 1 , 3.1415926 ,wcfN);
- sheet.addCell(labelNF);
- //3.添加Boolean对象
- jxl.write.Boolean labelB = new jxl.write.Boolean( 0 , 2 , false );
- sheet.addCell(labelB);
- //4.添加DateTime对象
- jxl.write.DateTime labelDT = new jxl.write.DateTime( 0 , 3 , new java.util.Date());
- sheet.addCell(labelDT);
- //添加带有formatting的DateFormat对象
- jxl.write.DateFormat df = new jxl.write.DateFormat( "ddMMyyyyhh:mm:ss" );
- jxl.write.WritableCellFormat wcfDF = new jxl.write.WritableCellFormat(df);
- jxl.write.DateTime labelDTF = new jxl.write.DateTime( 1 , 3 , new java.util.Date(),wcfDF);
- sheet.addCell(labelDTF);
- //和宾单元格
- //sheet.mergeCells(int col1,int row1,int col2,int row2);//左上角到右下角
- sheet.mergeCells(4 , 5 , 8 , 10 ); //左上角到右下角
- wfc = new jxl.write.WritableFont(WritableFont.ARIAL, 40 ,WritableFont.BOLD, false ,jxl.format.UnderlineStyle.NO_UNDERLINE,jxl.format.Colour.GREEN);
- jxl.write.WritableCellFormat wchB = new jxl.write.WritableCellFormat(wfc);
- wchB.setAlignment(jxl.format.Alignment.CENTRE);
- labelCFC = new jxl.write.Label( 4 , 5 , "单元合并" ,wchB);
- sheet.addCell(labelCFC); //
- //设置边框
- jxl.write.WritableCellFormat wcsB = new jxl.write.WritableCellFormat();
- wcsB.setBorder(jxl.format.Border.ALL,jxl.format.BorderLineStyle.THICK);
- labelCFC = new jxl.write.Label( 0 , 6 , "边框设置" ,wcsB);
- sheet.addCell(labelCFC);
- workbook.write();
- workbook.close();
- }catch (Exception e)
- {
- e.printStackTrace();
- }
- System.out.println("end" );
- Runtime r=Runtime.getRuntime();
- Process p=null ;
- //String cmd[]={"notepad","exec.java"};
- String cmd[]={"C:\\Program Files\\Microsoft Office\\Office\\EXCEL.EXE" , "out.xls" };
- try {
- p=r.exec(cmd);
- }
- catch (Exception e){
- System.out.println("error executing: " +cmd[ 0 ]);
- }
- }
- }