struts导出excel并下载

Action中处理，包含下载中文文件乱码、为空的问题。





import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.util.Date;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.springframework.beans.factory.annotation.Autowired;

import com.bskcare.ch.base.action.BaseAction;
import com.bskcare.ch.service.ProductCardService;
import com.bskcare.ch.util.DateUtils;
import com.bskcare.ch.vo.ProductCard;
import com.opensymphony.xwork2.ModelDriven;

public class ProductCardAction2 extends BaseAction implements
        ModelDriven<ProductCard> {

    private static final long serialVersionUID = 6658682414884709427L;
   
    @Autowired
    private ProductCardService productCardService;

    private ProductCard pc;

    private String fileName; // 下载文件名称
    private InputStream excelFile; // 下载文件流

    public ProductCard getModel() {
        if (null == pc)
            pc = new ProductCard();
        return pc;
    }

    public String download() throws Exception {
        HSSFWorkbook workbook = xxx(); //这个为调用service层返回的HSSFWorkbook对象
        ByteArrayOutputStream output = new ByteArrayOutputStream();
        workbook.write(output);
        byte[] ba = output.toByteArray();
        excelFile = new ByteArrayInputStream(ba);
        output.flush();
        output.close();
        return "excel";
    }

    public String getDownloadFileName() {
        return fileName;
    }

    public ProductCard getPc() {
        return pc;
    }

    public void setPc(ProductCard pc) {
        this.pc = pc;
    }

    /**
     * 返回类型为"中文名字-20130612231234.xls"
     * @return
     */
    public String getFileName() throws Exception{
        String tempName = "中文名字"+"-"
               + DateUtils.formatDate(DateUtils.LONG_DATE_PATTERN_PLAIN, new Date())
                + ".xls";
       
       fileName = new String(tempName.getBytes(), "ISO8859-1");
        System.out.println(fileName);
        return fileName;   
    }

    public void setFileName(String fileName) {
        this.fileName = fileName;
    }

    public InputStream getExcelFile() {
        return excelFile;
    }

    public void setExcelFile(InputStream excelFile) {
        this.excelFile = excelFile;
    }

}





2


struts.xml下载项配置说明：




<!-- 下载导出excle -->
<result name="excel" type="stream"> 
    <param name="contentType">application/vnd.ms-excel,charset=ISO8859-1</param>
    <param name="contentDisposition">attachment;filename="${fileName}"</param> 
    <param name="bufferSize">4096</param>
    <param name="inputName">excelFile</param> 
</result>


END



注意事项


1


请注意文中加粗部分内容



2


中文解决办法汇总：




代码部分：


String tempName = "中文名字"+"-"
               + DateUtils.formatDate(DateUtils.LONG_DATE_PATTERN_PLAIN, new Date())
                + ".xls";
       
fileName = new String(tempName.getBytes(), "ISO8859-1");




配置文件部分：


<param name="contentType">application/vnd.ms-excel,charset=ISO8859-1</param>