java简单解析xls文件的方法示例【读取和写入】

本文实例讲述了java简单解析xls文件的方法。分享给大家供大家参考，具体如下：

读取：

import java.io.*;
import jxl.*;
import jxl.write.*;
import jxl.format.*;
class aa{
public static void main(string args[]) {
try{
workbook workbook = null;
try {
  workbook = workbook.getworkbook(new file("d:\\a.xls"));
} catch (exception e) {
  throw new exception("file to import not found!");
}
sheet sheet = workbook.getsheet(0);
cell cell = null;
int columncount=3;
int rowcount=sheet.getrows();
for (int i = 0; i <rowcount; i++) {
  for (int j = 0; j <columncount; j++) {
    //注意，这里的两个参数，第一个是表示列的，第二才表示行
    cell=sheet.getcell(j, i);
    //要根据单元格的类型分别做处理，否则格式化过的内容可能会不正确
    if(cell.gettype()==celltype.number){
      system.out.print(((numbercell)cell).getvalue());
    }
    else if(cell.gettype()==celltype.date){
      system.out.print(((datecell)cell).getdate());
    }
    else{
      system.out.print(cell.getcontents());
    }
    //system.out.print(cell.getcontents());
    system.out.print("\t");
  }
  system.out.print("\n");
}
//关闭它，否则会有内存泄露
workbook.close();
}catch(exception e){
}
}
}

写入：

import java.io.*;
import jxl.*;
import jxl.write.*;
import jxl.format.*;
class aa{
public static void main(string args[]) {
try{
file tempfile=new file("d:" + java.io.file.separator + "output00.xls");
system.out.println( "d:" + java.io.file.separator + "output00.xls" );
writableworkbook workbook = workbook.createworkbook(tempfile);
writablesheet sheet = workbook.createsheet("testcreateexcel", 0);
//一些临时变量，用于写到excel中
label l=null;
jxl.write.number n=null;
jxl.write.datetime d=null;
//预定义的一些字体和格式，同一个excel中最好不要有太多格式
writablefont headerfont = new writablefont(writablefont.arial, 12, writablefont.bold, false, underlinestyle.no_underline, jxl.format.colour.blue);
writablecellformat headerformat = new writablecellformat (headerfont);
writablefont titlefont = new writablefont(writablefont.arial, 10, writablefont.no_bold, false, underlinestyle.no_underline, jxl.format.colour.red);
writablecellformat titleformat = new writablecellformat (titlefont);
writablefont detfont = new writablefont(writablefont.arial, 10, writablefont.no_bold, false, underlinestyle.no_underline, jxl.format.colour.black);
writablecellformat detformat = new writablecellformat (detfont);
numberformat nf=new numberformat("0.00000"); //用于number的格式
writablecellformat priceformat = new writablecellformat (detfont, nf);
dateformat df=new dateformat("yyyy-mm-dd");//用于日期的
writablecellformat dateformat = new writablecellformat (detfont, df);
//剩下的事情，就是用上面的内容和格式创建一些单元格，再加到sheet中
l=new label(0, 0, "用于测试的excel文件", headerformat);
sheet.addcell(l);
//add title
int column=0;
l=new label(column++, 2, "标题", titleformat);
sheet.addcell(l);
l=new label(column++, 2, "日期", titleformat);
sheet.addcell(l);
l=new label(column++, 2, "货币", titleformat);
sheet.addcell(l);
l=new label(column++, 2, "价格", titleformat);
sheet.addcell(l);
//add detail
int i=0;
column=0;
l=new label(column++, i+3, "标题 "+i, detformat);
sheet.addcell(l);
d=new datetime(column++, i+3, new java.util.date(), dateformat);
sheet.addcell(d);
l=new label(column++, i+3, "cny", detformat);
sheet.addcell(l);
n=new jxl.write.number(column++, i+3, 5.678, priceformat);
sheet.addcell(n);
i++;
column=0;
l=new label(column++, i+3, "标题 "+i, detformat);
sheet.addcell(l);
d=new datetime(column++, i+3, new java.util.date(), dateformat);
sheet.addcell(d);
l=new label(column++, i+3, "sgd", detformat);
sheet.addcell(l);
n=new jxl.write.number(column++, i+3, 98832, priceformat);
sheet.addcell(n);
//设置列的宽度
column=0;
sheet.setcolumnview(column++, 20);
sheet.setcolumnview(column++, 20);
sheet.setcolumnview(column++, 10);
sheet.setcolumnview(column++, 20);
workbook.write();
workbook.close();
}catch(exception e){
}
}
}

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希望本文所述对大家java程序设计有所帮助。