Struts生成Excel文件下载

java 代码

downloadaction.java
//--------------------------------------------------------------------------------
import org.apache.struts.action.*;
import javax.servlet.http.*;
import java.io.outputstream;

public class downloadaction extends action {
  public actionforward execute(actionmapping mapping,
                               actionform form, httpservletrequest request,
                               httpservletresponse response)
      throws exception {
    try{
      string fname = "test";//excel文件名
      outputstream os = response.getoutputstream();//取得输出流
      response.reset();//清空输出流
      response.setheader("content-disposition", "attachment; filename=" + fname + ".xls");//设定输出文件头
      response.setcontenttype("application/msexcel");//定义输出类型
      excelbean eb = new excelbean();
      eb.expordexcel(os);//调用生成excel文件bean
    }catch(exception e){
      system.out.println(e);
    }
    return mapping.findforward("display");
  }
}

生成excel文件的类：

java 代码

Excelbean.java
//--------------------------------------------------------------------------------

import java.io.*;
import jxl.*;
import jxl.write.*;
import jxl.format.*;
import java.util.*;
import java.awt.color;

public class Excelbean {
  public Excelbean(){}
  public string expordexcel(outputstream os)throws exception{
    jxl.write.writableworkbook wbook = workbook.createworkbook(os); //建立excel文件
    string tmptitle = "测试文件"; //标题
    jxl.write.writablesheet wsheet = wbook.createsheet("第一页", 0); //sheet名称
    //设置excel标题
    jxl.write.writablefont wfont = new jxl.write.writablefont(
        writablefont.arial, 16,
        writablefont.bold, false, jxl.format.underlinestyle.no_underline,
        jxl.format.colour.black);
    jxl.write.writablecellformat wcffc = new jxl.write.writablecellformat(
        wfont);
    jxl.write.label wlabel1;
    wlabel1 = new jxl.write.label(5, 0, tmptitle, wcffc);
    wsheet.addcell(wlabel1);
    wfont = new jxl.write.writablefont(
        writablefont.arial, 14,
        writablefont.bold, false, jxl.format.underlinestyle.no_underline,

jxl.format.colour.black);
    wcffc = new jxl.write.writablecellformat(
        wfont);
    jxl.write.label wlabel;
    wlabel = new jxl.write.label(0, 0, "写入内容");
    wsheet.addcell(wlabel); //
    wbook.write(); //写入文件
    wbook.close();
    os.close();
    return "success";
  }
}