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  • java生成Excel及操作Excel

    JAVA EXCEL API:是一开放源码项目,通过它Java开发人员可以读取Excel文件的内容、创建新的Excel文件、更新已经存在的Excel文件。使用该API非Windows操作系统也可以通过纯Java应用来处理Excel数据表。因为它是使用Java编写的,所以我们在Web应用中可以通过JSP、Servlet来调用API实现对Excel数据表的访问。

    下载:

    官方网站 http://www.andykhan.com/jexcelapi/ 下载最新版本(本人下的是jexcelapi_2_6_12.tar.gz,解压后将里面的jxl.jar复制到WEB-INF/lib目录下面即可)

    Java Excel API的jar包可以通过以下URL获得:

    http://sourceforge.net/projects/jexcelapi/files/jexcelapi/2.6.6/jexcelapi_2_6_6.zip/download

    (包括所有版本):http://sourceforge.net/projects/jexcelapi/files/

    直接下载地址(迅雷上新建任务即可):

    http://nchc.dl.sourceforge.net/project/jexcelapi/jexcelapi/2.6.6/jexcelapi_2_6_6.zip 

    一、JSP生成简单的Excel文件

    package beans.excel;
    
    import java.io.IOException;
    import java.io.OutputStream;
    
    import jxl.Workbook;
    import jxl.write.Label;
    import jxl.write.WritableSheet;
    import jxl.write.WritableWorkbook;
    import jxl.write.WriteException;
    
    public class SimpleExcelWrite {
        public void createExcel(OutputStream os) throws WriteException,IOException{
            //创建工作薄
            WritableWorkbook workbook = Workbook.createWorkbook(os);
            //创建新的一页
            WritableSheet sheet = workbook.createSheet("First Sheet",0);
            //创建要显示的内容,创建一个单元格,第一个参数为列坐标,第二个参数为行坐标,第三个参数为内容
            Label xuexiao = new Label(0,0,"学校");
            sheet.addCell(xuexiao);
            Label zhuanye = new Label(1,0,"专业");
            sheet.addCell(zhuanye);
            Label jingzhengli = new Label(2,0,"专业竞争力");
            sheet.addCell(jingzhengli);
            
            Label qinghua = new Label(0,1,"清华大学");
            sheet.addCell(qinghua);
            Label jisuanji = new Label(1,1,"计算机专业");
            sheet.addCell(jisuanji);
            Label gao = new Label(2,1,"高");
            sheet.addCell(gao);
            
            Label beida = new Label(0,2,"北京大学");
            sheet.addCell(beida);
            Label falv = new Label(1,2,"法律专业");
            sheet.addCell(falv);
            Label zhong = new Label(2,2,"中");
            sheet.addCell(zhong);
            
            Label ligong = new Label(0,3,"北京理工大学");
            sheet.addCell(ligong);
            Label hangkong = new Label(1,3,"航空专业");
            sheet.addCell(hangkong);
            Label di = new Label(2,3,"低");
            sheet.addCell(di);
            
            //把创建的内容写入到输出流中,并关闭输出流
            workbook.write();
            workbook.close();
            os.close();
        }
        
    }
    <%@ page language="java" import="java.util.*" pageEncoding="gb2312"%>
    <%@ page import="java.io.*" %>
    <%@ page import="beans.excel.*" %>
    <% 
        String fname = "学校竞争力情况";
        OutputStream os = response.getOutputStream();//取得输出流
        response.reset();//清空输出流
        
        //下面是对中文文件名的处理
        response.setCharacterEncoding("UTF-8");//设置相应内容的编码格式
        fname = java.net.URLEncoder.encode(fname,"UTF-8");
        response.setHeader("Content-Disposition","attachment;filename="+new String(fname.getBytes("UTF-8"),"GBK")+".xls");
        response.setContentType("application/msexcel");//定义输出类型
        SimpleExcelWrite sw = new SimpleExcelWrite();
        sw.createExcel(os);
    
     %>
    <html>
      <head>
        
        <title></title>
    
      </head>
      
      <body>
      </body>
    </html>

    生成复杂格式的Excel

    package beans.excel;
    
    import java.io.IOException;
    import java.io.OutputStream;
    import java.util.Calendar;
    import java.util.Date;
    
    import jxl.Workbook;
    import jxl.write.Boolean;
    import jxl.write.DateFormats;
    import jxl.write.DateTime;
    import jxl.write.Label;
    import jxl.write.Number;
    import jxl.write.WritableCellFormat;
    import jxl.write.WritableSheet;
    import jxl.write.WritableWorkbook;
    import jxl.write.WriteException;
    
    public class ComplexDataExcelWrite {
        public void createExcel(OutputStream os) throws WriteException,IOException {
            //创建工作薄
            WritableWorkbook workbook = Workbook.createWorkbook(os);
            //创建新的一页
            WritableSheet sheet = workbook.createSheet("First Sheet", 0);
            //创建要显示的具体内容
            Label formate = new Label(0,0,"数据格式");
            sheet.addCell(formate);
            Label floats = new Label(1,0,"浮点型");
            sheet.addCell(floats);
            Label integers = new Label(2,0,"整型");
            sheet.addCell(integers);
            Label booleans = new Label(3,0,"布尔型");
            sheet.addCell(booleans);
            Label dates = new Label(4,0,"日期格式");
            sheet.addCell(dates);
            
            Label example = new Label(0,1,"数据示例");
            sheet.addCell(example);
            //浮点数据
            Number number = new Number(1,1,3.1415926535);
            sheet.addCell(number);
            //整形数据
            Number ints = new Number(2,1,15042699);
            sheet.addCell(ints);
            Boolean bools = new Boolean(3,1,true);
            sheet.addCell(bools);
            //日期型数据
            Calendar c = Calendar.getInstance();
            Date date = c.getTime();
            WritableCellFormat cf1 = new WritableCellFormat(DateFormats.FORMAT1);
            DateTime dt = new DateTime(4,1,date,cf1);
            sheet.addCell(dt);
            //把创建的内容写入到输出流中,并关闭输出流
            workbook.write();
            workbook.close();
            os.close();
            
        }
    }

     三、生成复杂布局和样式的Excel文件

    package beans.excel;
    
    import java.io.IOException;
    import java.io.OutputStream;
    import java.util.Calendar;
    import java.util.Date;
    
    import jxl.Workbook;
    import jxl.format.Colour;
    import jxl.format.UnderlineStyle;
    import jxl.write.Boolean;
    import jxl.write.DateFormats;
    import jxl.write.DateTime;
    import jxl.write.Label;
    import jxl.write.Number;
    import jxl.write.WritableCellFormat;
    import jxl.write.WritableFont;
    import jxl.write.WritableSheet;
    import jxl.write.WritableWorkbook;
    import jxl.write.WriteException;
    
    public class MutiStyleExcelWrite {
        public void createExcel(OutputStream os) throws WriteException,IOException {
            //创建工作薄
            WritableWorkbook workbook = Workbook.createWorkbook(os);
            //创建新的一页
            WritableSheet sheet = workbook.createSheet("First Sheet", 0);
            //构造表头
            sheet.mergeCells(0, 0, 4, 0);//添加合并单元格,第一个参数是起始列,第二个参数是起始行,第三个参数是终止列,第四个参数是终止行
            WritableFont bold = new WritableFont(WritableFont.ARIAL,10,WritableFont.BOLD);//设置字体种类和黑体显示,字体为Arial,字号大小为10,采用黑体显示
            WritableCellFormat titleFormate = new WritableCellFormat(bold);//生成一个单元格样式控制对象
            titleFormate.setAlignment(jxl.format.Alignment.CENTRE);//单元格中的内容水平方向居中
            titleFormate.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);//单元格的内容垂直方向居中
            Label title = new Label(0,0,"JExcelApi支持数据类型详细说明",titleFormate);
            sheet.setRowView(0, 600, false);//设置第一行的高度
            sheet.addCell(title);
            
            //创建要显示的具体内容
            WritableFont color = new WritableFont(WritableFont.ARIAL);//选择字体
            color.setColour(Colour.GOLD);//设置字体颜色为金黄色
            WritableCellFormat colorFormat = new WritableCellFormat(color);
            Label formate = new Label(0,1,"数据格式",colorFormat);
            sheet.addCell(formate);
            Label floats = new Label(1,1,"浮点型");
            sheet.addCell(floats);
            Label integers = new Label(2,1,"整型");
            sheet.addCell(integers);
            Label booleans = new Label(3,1,"布尔型");
            sheet.addCell(booleans);
            Label dates = new Label(4,1,"日期格式");
            sheet.addCell(dates);
            
            Label example = new Label(0,2,"数据示例",colorFormat);
            sheet.addCell(example);
            //浮点数据
            //设置下划线
            WritableFont underline= new WritableFont(WritableFont.ARIAL,WritableFont.DEFAULT_POINT_SIZE,WritableFont.NO_BOLD,false,UnderlineStyle.SINGLE);
            WritableCellFormat greyBackground = new WritableCellFormat(underline);
            greyBackground.setBackground(Colour.GRAY_25);//设置背景颜色为灰色
            Number number = new Number(1,2,3.1415926535,greyBackground);
            sheet.addCell(number);
            //整形数据
            WritableFont boldNumber = new WritableFont(WritableFont.ARIAL,10,WritableFont.BOLD);//黑体
            WritableCellFormat boldNumberFormate = new WritableCellFormat(boldNumber);
            Number ints = new Number(2,2,15042699,boldNumberFormate);
            sheet.addCell(ints);
            //布尔型数据
            Boolean bools = new Boolean(3,2,true);
            sheet.addCell(bools);
            //日期型数据
            //设置黑体和下划线
            WritableFont boldDate = new WritableFont(WritableFont.ARIAL,WritableFont.DEFAULT_POINT_SIZE,WritableFont.BOLD,false,UnderlineStyle.SINGLE);
            WritableCellFormat boldDateFormate = new WritableCellFormat(boldDate,DateFormats.FORMAT1);
            Calendar c = Calendar.getInstance();
            Date date = c.getTime();
            DateTime dt = new DateTime(4,2,date,boldDateFormate);
            sheet.addCell(dt);
            //把创建的内容写入到输出流中,并关闭输出流
            workbook.write();
            workbook.close();
            os.close();
            
        }
    }

     四、JSP读取Excel报表

    <%@ page language="java" import="java.util.*" pageEncoding="gb2312"%>
    <%@ page import="java.io.File" %>
    <%@ page import="jxl.Cell" %>
    <%@ page import="jxl.Sheet" %>
    <%@ page import="jxl.Workbook" %>
    <html>
      <head>
        <title></title>
      </head>
      <body>
        <font size="2">
        <%
            String fileName = "D:/学校竞争力情况.xls";
            File file = new File(fileName);//根据文件名创建一个文件对象
            Workbook wb = Workbook.getWorkbook(file);//从文件流中取得Excel工作区对象
            Sheet sheet = wb.getSheet(0);//从工作区中取得页,取得这个对象的时候既可以用名称来获得,也可以用序号。
            String outPut = "";
            
            outPut = outPut + "<b>" + fileName + "</b><br>";
            outPut = outPut + "第一个sheet的名称为:" + sheet.getName() + "<br>";
            outPut = outPut + "第一个sheet共有:" + sheet.getRows() + "行" + sheet.getColumns() + "列<br>";
            outPut = outPut + "具体内容如下:<br>";
            for(int i=0; i < sheet.getRows(); i++){
                for(int j=0; j < sheet.getColumns(); j++){
                    Cell cell = sheet.getCell(j,i);
                    outPut = outPut + cell.getContents() + " ";
                }
                outPut = outPut + "<br>";
            }
            out.println(outPut);
         %>
         </font>
      </body>
    </html>

    示例1:读取本地Excel文件F:红楼人物.xls

    1.       新建Excel文件F:红楼人物.xls

    内容如下:

    2.       Java通过jexcelapi包操作excel文件:

      1 //in ExcelOperater   
      2   
      3 import java.io.File;   
      4   
      5 import java.io.FileInputStream;   
      6   
      7 import java.io.InputStream;   
      8   
      9     
     10   
     11 import jxl.Cell;   
     12   
     13 import jxl.CellType;   
     14   
     15 import jxl.Sheet;   
     16   
     17 import jxl.Workbook;   
     18   
     19 import jxl.write.Label;   
     20   
     21     
     22   
     23 public class ExcelOperater    
     24   
     25 {   
     26   
     27     public static void main(String[] args)    
     28   
     29     {   
     30   
     31         jxl.Workbook readwb = null;   
     32   
     33         try    
     34   
     35         {   
     36   
     37             //构建Workbook对象, 只读Workbook对象   
     38   
     39             //直接从本地文件创建Workbook   
     40   
     41             InputStream instream = new FileInputStream("F:/红楼人物.xls");   
     42   
     43             readwb = Workbook.getWorkbook(instream);   
     44   
     45     
     46   
     47             //Sheet的下标是从0开始   
     48   
     49             //获取第一张Sheet表   
     50   
     51             Sheet readsheet = readwb.getSheet(0);   
     52   
     53             //获取Sheet表中所包含的总列数   
     54   
     55             int rsColumns = readsheet.getColumns();   
     56   
     57             //获取Sheet表中所包含的总行数   
     58   
     59             int rsRows = readsheet.getRows();   
     60   
     61             //获取指定单元格的对象引用   
     62   
     63             for (int i = 0; i < rsRows; i++)   
     64   
     65             {   
     66   
     67                 for (int j = 0; j < rsColumns; j++)   
     68   
     69                 {   
     70   
     71                     Cell cell = readsheet.getCell(j, i);   
     72   
     73                     System.out.print(cell.getContents() + " ");   
     74   
     75                 }   
     76   
     77                 System.out.println();   
     78   
     79             }   
     80   
     81                
     82   
     83             //利用已经创建的Excel工作薄,创建新的可写入的Excel工作薄   
     84   
     85             jxl.write.WritableWorkbook wwb = Workbook.createWorkbook(new File(   
     86   
     87                     "F:/红楼人物1.xls"), readwb);   
     88   
     89             //读取第一张工作表   
     90   
     91             jxl.write.WritableSheet ws = wwb.getSheet(0);   
     92   
     93             //获得第一个单元格对象   
     94   
     95             jxl.write.WritableCell wc = ws.getWritableCell(0, 0);   
     96   
     97             //判断单元格的类型, 做出相应的转化   
     98   
     99             if (wc.getType() == CellType.LABEL)    
    100   
    101             {   
    102   
    103                 Label l = (Label) wc;   
    104   
    105                 l.setString("新姓名");   
    106   
    107             }   
    108   
    109             //写入Excel对象   
    110   
    111             wwb.write();   
    112   
    113             wwb.close();   
    114   
    115         } catch (Exception e) {   
    116   
    117             e.printStackTrace();   
    118   
    119         } finally {   
    120   
    121             readwb.close();   
    122   
    123         }   
    124   
    125 }   
    126   
    127 }  

    3.       结果:

    ①     控制台输出:

    人物 等级 大观园位置 金陵十二钗

    林黛玉 小姐 潇湘馆 正册

    妙玉 世外 栊翠庵 正册

    晴雯 丫鬟 怡红院 副册

    香菱 妾 蘅芜苑 又副册

    ②     创建文件F:红楼人物1.xls

    4.       程序解析:

    所引用的包:

    ①     Workbook对象,需要jxl.Workbook包;

    ②     InputStream、FileInputStream对象:需要java.io.FileInputStream和java.io.InputStream包。

    ③     Sheet对象:jxl.Sheet包;注意excel中sheet表单的行列从0开始计数。

    ④     Cell对象:jxl.Cell包;对单元进行处理

    ⑤     Label:选择jxl.write.label包

    ⑥     WritableWorkbook、WritableSheet、WritableCelll对象

    实例二:3个功能-----从excel文件F:红楼人物.xls读取数据;生成新的excel文件F:红楼人物2.xls;修改原excel一个单元并输出为F:红楼人物3.xls。

    原始文件:F:红楼人物.xls

    运行结果:

    ①     控制台输出:

    人物 等级 大观园位置 金陵十二钗

    林黛玉 小姐 潇湘馆 正册

    妙玉 世外 栊翠庵 正册

    晴雯 丫鬟 怡红院 副册

    香菱 妾 蘅芜苑 又副册

    ②     写入输出Excel文件:F:红楼人物2.xls

    ③     修改输出文件 F:红楼人物3.xls (加修饰后输出)

    示例程序:

      1 //in ExcelHandle   
      2   
      3 import jxl.*;   
      4   
      5 import jxl.format.UnderlineStyle;   
      6   
      7 import jxl.write.*;   
      8   
      9 import jxl.write.Number;   
     10   
     11 import jxl.write.Boolean;   
     12   
     13 import jxl.Cell;   
     14   
     15     
     16   
     17 import java.io.*;   
     18   
     19     
     20   
     21 public class ExcelHandle   
     22   
     23 {   
     24   
     25     public ExcelHandle()   
     26   
     27     {   
     28   
     29     }   
     30   
     31     /***读取Excel*/  
     32   
     33     public static void readExcel(String filePath)   
     34   
     35     {   
     36   
     37         try  
     38   
     39         {   
     40   
     41             InputStream is = new FileInputStream(filePath);   
     42   
     43             Workbook rwb = Workbook.getWorkbook(is);   
     44   
     45             //这里有两种方法获取sheet表:名字和下标(从0开始)   
     46   
     47             //Sheet st = rwb.getSheet("original");   
     48   
     49             Sheet st = rwb.getSheet(0);   
     50   
     51             /**  
     52  
     53             //获得第一行第一列单元的值  
     54  
     55             Cell c00 = st.getCell(0,0);  
     56  
     57             //通用的获取cell值的方式,返回字符串  
     58  
     59             String strc00 = c00.getContents();  
     60  
     61             //获得cell具体类型值的方式  
     62  
     63             if(c00.getType() == CellType.LABEL)  
     64  
     65             {  
     66  
     67                 LabelCell labelc00 = (LabelCell)c00;  
     68  
     69                 strc00 = labelc00.getString();  
     70  
     71             }  
     72  
     73             //输出  
     74  
     75             System.out.println(strc00);*/  
     76   
     77             //Sheet的下标是从0开始   
     78   
     79             //获取第一张Sheet表   
     80   
     81             Sheet rst = rwb.getSheet(0);   
     82   
     83             //获取Sheet表中所包含的总列数   
     84   
     85             int rsColumns = rst.getColumns();   
     86   
     87             //获取Sheet表中所包含的总行数   
     88   
     89             int rsRows = rst.getRows();   
     90   
     91             //获取指定单元格的对象引用   
     92   
     93             for (int i = 0; i < rsRows; i++)   
     94   
     95             {   
     96   
     97                 for (int j = 0; j < rsColumns; j++)   
     98   
     99                 {   
    100   
    101                     Cell cell = rst.getCell(j, i);   
    102   
    103                     System.out.print(cell.getContents() + " ");   
    104   
    105                 }   
    106   
    107                 System.out.println();   
    108   
    109             }             
    110   
    111             //关闭   
    112   
    113             rwb.close();   
    114   
    115         }   
    116   
    117         catch(Exception e)   
    118   
    119         {   
    120   
    121             e.printStackTrace();   
    122   
    123         }   
    124   
    125     }   
    126   
    127     /**输出Excel*/  
    128   
    129     public static void writeExcel(OutputStream os)   
    130   
    131     {   
    132   
    133         try  
    134   
    135         {   
    136   
    137    /** 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:方法一:直接从目标文件中读取 WritableWorkbook wwb = Workbook.createWorkbook(new File(targetfile));方法 二:如下实例所示 将WritableWorkbook直接写入到输出流*/  
    138   
    139             WritableWorkbook wwb = Workbook.createWorkbook(os);   
    140   
    141             //创建Excel工作表 指定名称和位置   
    142   
    143             WritableSheet ws = wwb.createSheet("Test Sheet 1",0);   
    144   
    145             /**************往工作表中添加数据*****************/  
    146   
    147             //1.添加Label对象   
    148   
    149             Label label = new Label(0,0,"测试");   
    150   
    151             ws.addCell(label);   
    152   
    153             //添加带有字型Formatting对象   
    154   
    155             WritableFont wf = new WritableFont(WritableFont.TIMES,18,WritableFont.BOLD,true);   
    156   
    157             WritableCellFormat wcf = new WritableCellFormat(wf);   
    158   
    159             Label labelcf = new Label(1,0,"this is a label test",wcf);   
    160   
    161             ws.addCell(labelcf);   
    162   
    163             //添加带有字体颜色的Formatting对象   
    164   
    165             WritableFont wfc = new WritableFont(WritableFont.ARIAL,10,WritableFont.NO_BOLD,false,   
    166   
    167                     UnderlineStyle.NO_UNDERLINE,jxl.format.Colour.DARK_YELLOW);   
    168   
    169             WritableCellFormat wcfFC = new WritableCellFormat(wfc);   
    170   
    171             Label labelCF = new Label(1,0,"Ok",wcfFC);   
    172   
    173             ws.addCell(labelCF);   
    174   
    175               
    176   
    177             //2.添加Number对象   
    178   
    179             Number labelN = new Number(0,1,3.1415926);   
    180   
    181             ws.addCell(labelN);   
    182   
    183             //添加带有formatting的Number对象   
    184   
    185             NumberFormat nf = new NumberFormat("#.##");   
    186   
    187             WritableCellFormat wcfN = new WritableCellFormat(nf);   
    188   
    189             Number labelNF = new jxl.write.Number(1,1,3.1415926,wcfN);   
    190   
    191             ws.addCell(labelNF);   
    192   
    193                
    194   
    195             //3.添加Boolean对象   
    196   
    197             Boolean labelB = new jxl.write.Boolean(0,2,true);   
    198   
    199             ws.addCell(labelB);   
    200   
    201             Boolean labelB1 = new jxl.write.Boolean(1,2,false);   
    202   
    203             ws.addCell(labelB1);             
    204   
    205             //4.添加DateTime对象   
    206   
    207             jxl.write.DateTime labelDT = new jxl.write.DateTime(0,3,new java.util.Date());   
    208   
    209             ws.addCell(labelDT);   
    210   
    211               
    212   
    213             //5.添加带有formatting的DateFormat对象   
    214   
    215             DateFormat df = new DateFormat("dd MM yyyy hh:mm:ss");   
    216   
    217             WritableCellFormat wcfDF = new WritableCellFormat(df);   
    218   
    219             DateTime labelDTF = new DateTime(1,3,new java.util.Date(),wcfDF);   
    220   
    221             ws.addCell(labelDTF);   
    222   
    223             //6.添加图片对象,jxl只支持png格式图片   
    224   
    225             File image = new File("f:\1.png");   
    226   
    227             WritableImage wimage = new WritableImage(0,4,6,17,image);   
    228   
    229             ws.addImage(wimage);   
    230   
    231             //7.写入工作表   
    232   
    233             wwb.write();   
    234   
    235             wwb.close();   
    236   
    237         }   
    238   
    239         catch(Exception e)   
    240   
    241         {   
    242   
    243             e.printStackTrace();   
    244   
    245         }   
    246   
    247     }   
    248   
    249     /** 将file1拷贝后,进行修改并创建输出对象file2  
    250  
    251      * 单元格原有的格式化修饰不能去掉,但仍可将新的单元格修饰加上去,  
    252  
    253      * 以使单元格的内容以不同的形式表现  
    254  
    255      */  
    256   
    257     public static void modifyExcel(File file1,File file2)   
    258   
    259     {   
    260   
    261         try  
    262   
    263         {   
    264   
    265             Workbook rwb = Workbook.getWorkbook(file1);   
    266   
    267             WritableWorkbook wwb = Workbook.createWorkbook(file2,rwb);//copy   
    268   
    269             WritableFont wfc = new WritableFont(WritableFont.ARIAL,10,WritableFont.NO_BOLD,false,   
    270   
    271                     UnderlineStyle.NO_UNDERLINE,jxl.format.Colour.BLUE);   
    272   
    273             WritableCellFormat wcfFC = new WritableCellFormat(wfc);    
    274   
    275             WritableSheet ws = wwb.getSheet(0);   
    276   
    277             WritableCell wc = ws.getWritableCell(0,0);   
    278   
    279             //判断单元格的类型,做出相应的转换   
    280   
    281             if(wc.getType() == CellType.LABEL)   
    282   
    283             {   
    284   
    285                 Label labelCF =new Label(0,0,"人物(新)",wcfFC);   
    286   
    287                 ws.addCell(labelCF);     
    288   
    289               //Label label = (Label)wc;   
    290   
    291               //label.setString("被修改");   
    292   
    293             }   
    294   
    295           wwb.write();   
    296   
    297             wwb.close();   
    298   
    299             rwb.close();   
    300   
    301         }   
    302   
    303         catch(Exception e)   
    304   
    305         {   
    306   
    307             e.printStackTrace();   
    308   
    309         }   
    310   
    311     }   
    312   
    313     //测试   
    314   
    315     public static void main(String args[])   
    316   
    317     {   
    318   
    319         try  
    320   
    321         {   
    322   
    323             //读EXCEL   
    324   
    325         ExcelHandle.readExcel("F:/红楼人物.xls");   
    326   
    327             //输出EXCEL   
    328   
    329         File filewrite=new File("F:/红楼人物2.xls");   
    330   
    331         filewrite.createNewFile();   
    332   
    333         OutputStream os=new FileOutputStream(filewrite);   
    334   
    335         ExcelHandle.writeExcel(os);   
    336   
    337             //修改EXCEL   
    338   
    339         ExcelHandle.modifyExcel(new File("F:/红楼人物.xls"), new File("F:/红楼人物3.xls"));   
    340   
    341         }   
    342   
    343         catch(Exception e)   
    344   
    345         {   
    346   
    347         e.printStackTrace();   
    348   
    349         }   
    350   
    351     }   
    352   
    353 }   
    354   

    附:

    调用流程如下:

    1.打开工作文件Workbook,在此之前先用java的io流创建或者读取文件
    2.打开工作表Sheet
    3.读行,然后读列。注意,行和列是从零开始的
    4.取得数据进行操作
     

    来自网络à读取Excel数据表

    第一步:创建Workbook(术语:工作薄)

    2种方法:Workbook,就可以通过它来访问Excel Sheet(术语:工作表):

    //从输入流创建Workbook读取excel数据表   
      
        InputStream is = new FileInputStream(sourcefile);   
      
        jxl.Workbook workbook = Workbook.getWorkbook(is);   
      
    //直接从本地文件(.xls)创建Workbook   
      
    Workbook workbook = Workbook.getWorkbook(new File(excelfile)); 

    一旦创建了

    第二步:访问sheet。

    2种方法:通过sheet的名称;或者通过下标,下标从0开始。

     1 //获取第一张Sheet表   
     2   
     3 Sheet rs = workbook.getSheet(0);   
     4   
     5 一旦得到了Sheet,就可以通过它来访问Excel Cell(术语:单元格)。   
     6   
     7 第三步:访问单元格cell   
     8   
     9 //获取第一行,第一列的值   
    10   
    11 Cell c00 = rs.getCell(0, 0);   
    12   
    13 String strc00 = c00.getContents();   
    14   
    15 //获取第一行,第二列的值   
    16   
    17 Cell c10 = rs.getCell(1, 0);   
    18   
    19 String strc10 = c10.getContents();   
    20   
    21 //获取第二行,第二列的值   
    22   
    23 Cell c11 = rs.getCell(1, 1);   
    24   
    25 String strc11 = c11.getContents();   
    26   
    27     
    28   
    29 System.out.println("Cell(0, 0)" + " value : " + strc00 + "; type : " + c00.getType());   
    30   
    31 System.out.println("Cell(1, 0)" + " value : " + strc10 + "; type : " + c10.getType());   
    32   
    33 System.out.println("Cell(1, 1)" + " value : " + strc11 + "; type : " + c11.getType());   

    第四步:操作数据

    如果仅仅是取得Cell的 值,我们可以方便地通过getContents()方法,它可以将任何类型的Cell值都作为一个字符串返回。如果有需要知道Cell内容的确切类型,API也提供了一系列的方法:

    String strc00 = null;   
      
    double strc10 = 0.00;   
      
    Date strc11 = null;   
      
    Cell c00 = rs.getCell(0, 0);   
      
    Cell c10 = rs.getCell(1, 0);   
      
    Cell c11 = rs.getCell(1, 1);   
      
    if(c00.getType() == CellType.LABEL)   
      
    {   
      
    LabelCell labelc00 = (LabelCell)c00;   
      
    strc00 = labelc00.getString();   
      
    }   
      
    if(c10.getType() == CellType.NUMBER)   
      
    {   
      
    NmberCell numc10 = (NumberCell)c10;   
      
    strc10 = numc10.getValue();   
      
    }   
      
    if(c11.getType() == CellType.DATE)   
      
    {   
      
    DateCell datec11 = (DateCell)c11;   
      
    strc11 = datec11.getDate();   
      
    }   
      
        
      
    System.out.println("Cell(0, 0)" + " value : " + strc00 + "; type : " + c00.getType());   
      
    System.out.println("Cell(1, 0)" + " value : " + strc10 + "; type : " + c10.getType());   
      
    System.out.println("Cell(1, 1)" + " value : " + strc11 + "; type : " + c11.getType());   

    在得到

    循环取出全部数据,并转化为相应格式:

     1 int rows = sheet.getRows();   
     2   
     3 for (int i = 1; i < rows; i++) {   
     4   
     5     Cell cb1 = sheet.getCell(0, i);   
     6   
     7     Cell cb2 = sheet.getCell(1, i);   
     8   
     9     Cell num3 = sheet.getCell(2, i);   
    10   
    11     Cell num4 = sheet.getCell(3, i);   
    12   
    13     
    14   
    15     String user = "";   
    16   
    17     String rule = "";   
    18   
    19     int numNew = 0;   
    20   
    21     int numEdit = 0;   
    22   
    23     if (cb1.getType() == CellType.LABEL) {   
    24   
    25          LabelCell lc = (LabelCell) cb1;   
    26   
    27          user = lc.getString();   
    28   
    29     }   
    30   
    31     if (cb2.getType() == CellType.LABEL) {   
    32   
    33          LabelCell lc = (LabelCell) cb2;   
    34   
    35     rule = lc.getString();   
    36   
    37     }   
    38   
    39     if (num3.getType() == CellType.NUMBER_FORMULA) {   
    40   
    41          NumberFormulaCell nc = (NumberFormulaCell) num3;   
    42   
    43          try {   
    44   
    45              numNew = Double.valueOf(nc.getFormula()).intValue();   
    46   
    47          } catch (FormulaException e) {   
    48   
    49              e.printStackTrace();   
    50   
    51          }   
    52   
    53     }   
    54   
    55     if (num4.getType() == CellType.NUMBER_FORMULA) {   
    56   
    57          NumberFormulaCell nc = (NumberFormulaCell) num4;   
    58   
    59          try {   
    60   
    61              numEdit = Double.valueOf(nc.getFormula()).intValue();   
    62   
    63          } catch (FormulaException e) {   
    64   
    65              e.printStackTrace();   
    66   
    67          }   
    68   
    69     }   
    70   
    71 }   

    第五步:关闭对象,释放内存。

    完成对Excel电子表格数据的处理后,一定要使用close()方法来关闭先前创建的对象,以释放读取数据表的过程中所占用的内存空间,在读取大量数据时显得尤为重要。

    Cell对象后,通过 getType()方法可以获得该单元格的类型,然后与API提供的基本类型相匹配,强制转换成相应的类型,最后调用相应的取值方法getXXX(),就可以得到确定类型的值。

    来自:http://www.cnblogs.com/wuxinrui/archive/2011/03/20/1989326.html

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  • 原文地址:https://www.cnblogs.com/arctictern/p/6644324.html
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