struts2文件下载时弹出保存框 文件名是乱码

Question

下载文件时，弹出保存框时 文件名是乱码 如何解决 
显示的是这种样子的名字 C4%BF%CA% 

Answer 1

new string().getbytes();进行强制转码  统一编码没有用 必须进行强制转 

Answer 2

File file = new File("文件路径");
HttpServletResponse response=ServletActionContext.getResponse();
OutputStream out = response.getOutputStream();
InputStream in = new FileInputStream(file);
DataInputStream din = new DataInputStream(new BufferedInputStream(in));
DataOutputStream dout = new DataOutputStream(new BufferedOutputStream(out));
//response.setContentType("application/octet-stream");

String displayname = new String("新建文本文档 (2).txt".getBytes("GBK"),"ISO-8859-1");

response.setContentType("application/x-download");
response.setHeader("Content-Disposition", "attachment;filename="+ displayname);在IE下，用utf-8好像还是乱码，所以就用GBK，就可以了

Answer 3

C4%BF%CA% 这是URL编码百度 URL 编码

Answer 4

filename = URLEncoder.encode(filename, "GBK");
    
    //弹出下载对话框的关键代码
    response.setContentType("application/x-download");
    response.setHeader("Content-Disposition","attachment;filename="+ filename);设置了编码方式没？

Answer 5

中文编码的三种方式:1 、GBK
                 2、gb2312
                 3、UTF-8

Answer 6

LZ  我把代码贴给你 要结贴哦 
public class util2 {
public static void excel(HttpServletResponse response, List list,
           String[] firstLine, String sheetName, String fileName) {
       String[] array1 = null;
       try {
        //格式化时间
        SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");
        String  nowDate=sdf.format(new Date());
        String filename=fileName+nowDate+".xls";
        short i = 0;// row行标
           response.setContentType("application/vnd.ms-excel");//设置生成的文件类型
           response.setHeader("Content-Disposition", "filename="+ new String(filename.getBytes("gb2312"), "iso8859-1"));//设置文件头编码方式和文件名
           HSSFWorkbook wb = new HSSFWorkbook();//excel文件,一个excel文件包含多个表
           HSSFSheet sheet = wb.createSheet();//表，一个表包含多个行
           wb.setSheetName(0, sheetName, HSSFWorkbook.ENCODING_UTF_16);// 设置sheet中文编码；
           //设置字体等样式
           HSSFFont font = wb.createFont();
           font.setFontHeightInPoints((short) 12);
           font.setFontName("Courier New");
           HSSFCellStyle style = wb.createCellStyle();
           style.setFont(font);
           style.setWrapText(true);
           style.setAlignment(HSSFCellStyle.ALIGN_LEFT);
           style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
           HSSFRow row;//行，一行包括多个单元格
           HSSFCell cell;//单元格
           row = sheet.createRow(i);//由HSSFSheet生成行
           row.setHeightInPoints((float) 30);
           //生成首行
           for (short j = 0; j < firstLine.length; j++) {               cell = row.createCell(j);//由行生成单元格               cell.setCellStyle(style);               cell.setEncoding(HSSFCell.ENCODING_UTF_16);// 设置cell中文编码；               cell.setCellValue(firstLine[j]);
              sheet.setColumnWidth(j, (short) (5000));            }
           //生成所有行的单元格内容，如果测试list设为null即可，或者将这一段代码注释掉
           if (null == list || list.size() == 0) {
              // do nothing
           } else {
              for (int k = 0; k < list.size(); k++) {
                  row = sheet.createRow(++i);
                  row.setHeightInPoints((float) 20);
                  array1 = (String[]) list.get(k);
                  if (null != array1 && array1.length != 0) {
                     for (int f = 0; f < array1.length; f++) {
                         cell = row.createCell((short) f);
                         cell.setCellStyle(style);
                         cell.setEncoding(HSSFCell.ENCODING_UTF_16);
                         System.out.println("==========="+array1[f]);
                         cell.setCellValue(array1[f]);
                     }
                  }
//                 row = sheet.createRow((int)++i);
//                   Student stu = (Student) list.get(k);
//                   //第四步，创建单元格，并设置值
//                   cell = row.createCell((short) k);
//                   cell.setCellStyle(style);
//                   row.createCell((short)0).setCellValue((double)stu.getId());
//                   cell.setEncoding(HSSFCell.ENCODING_UTF_16);
//                   row.createCell((short)1).setCellValue(stu.getName());
//                   row.createCell((short)2).setCellValue((double)stu.getAge());
//                   row.createCell((short)3).setCellValue(new SimpleDateFormat("yyyy-mm-dd").format(stu.getBrith()));
              }
           }
           //输出
           OutputStream out = response.getOutputStream();
           wb.write(out);
           out.close();
       } catch (Exception ex) {
           ex.printStackTrace();
       }
       return;
    }
//导出Excel文件
public static List importExcels(String filename) {   
List list=new ArrayList();
    SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");   
    File f = new File(filename);   
    FileInputStream is;
    LvyouTopic emp=null;
    int count = 0;   
    try {   
        is = new FileInputStream(new File(filename));   
        HSSFWorkbook wb = new HSSFWorkbook(is);   
        int sheetNum = wb.getNumberOfSheets();   
        for (int i = 0; i < sheetNum; i++) {   
            HSSFSheet childSheet = wb.getSheetAt(i);   
            int rowNum = childSheet.getLastRowNum();   
            if (rowNum > 0) {   
                for (int j = 1; j <= rowNum; j++) {   
                    for (int k = 0; k < 1; k++) {   
                     emp=new LvyouTopic();   
                        HSSFCell b = childSheet.getRow(j).getCell(   
                                (short) (k+0));//No   
                        if (b != null) {   
                            emp.setId(Integer.parseInt(b.toString()));   
                        } else {   
                            count++;   
                            continue;   
                        }   
                       b = childSheet.getRow(j).getCell((short) (k+1));// Name   
                       if (b != null) {   
                           emp.setStuName(b.toString());   
                        } else {   
                            count++;   
                           continue;   
                        }   
                       b=childSheet.getRow(j).getCell((short)(k+2));
                       if(b!=null){
                        try {
                        emp.setStuAddress(b.toString());
} catch (Exception e) {
e.printStackTrace();
}
                       }else{
                        count++;
                        continue;
                       }
//                      b = childSheet.getRow(j).getCell((short) (k+2));// Birthday   
//                        if (b != null) {   
//                           try{   
//                             Date  date=sdf.parse(b.toString());   
//                            if(date!=null){   
//                            emp.setBirthday(date);   
//                            }else{   
//                                 count++;   
//                                continue;   
//                             }   
//                             }catch(Exception e){   
//                                 count++;   
//                                continue;   
//                           }   
//                         } else {   
//                             count++;   
//                             continue;   
//                         }   
//                         b = childSheet.getRow(j).getCell((short) (k+3));// CardType   
//                        if (b != null) {   
//                             emp.setCardType(b.toString());   
//                         } else {   
//                            emp.setCardType("");   
//                         }   
//   
//                         b = childSheet.getRow(j).getCell((short) (k+4));// CardNO   
//                        if (b != null) {   
//                             emp.setCardNo(b.toString());   
//                         } else {   
//                             emp.setCardNo("");   
//                         }   
//                         b = childSheet.getRow(j).getCell((short) (k+5)); //Sex   
//                         if (b != null&&!"".equals(b.toString().trim())) {   
//                             if(b.toString().equals("男")){   
//                                 emp.setSex(SexEnum.Man.getValue());   
//                             }else if(b.toString().equals("女")){   
//                                 emp.setSex(SexEnum.Woman.getValue());   
//                             }else{   
//                                 emp.setSex(SexEnum.Unknow.getValue());   
//                             }   
//                         } else {   
//                             emp.setSex(0);   
//                         }   
//                         b = childSheet.getRow(j).getCell((short) (k+6));// Telַ   
//                         if (b != null) {   
//                             emp.setTel(b.toString());   
//                         } else {   
//                             emp.setTel("");   
//                         }   
  
//                         b = childSheet.getRow(j).getCell((short) (k+7));//Mobile   
//                         if (b != null) {   
//                             emp.setMobile(b.toString());   
//                         } else {   
//                             count++;   
//                             continue;   
//                         }   
//                         if(emp.getNo()!=null&&!"".equals(emp.getNo().trim())){   
//                             if(this.isHasNo(emp.getNo())){   
//                                 count++;   
//                                 continue;   
//                             }   
//                         }else{   
//                             count++;   
//                             continue;   
//                         }   
//                         emp.setDepartment(dep.getUid());   
//                         emp.setExpertType("");   
//                         emp.setStatex(EmployeeStateEnum.Normal.getValue());   
//                        emp.setUser(GeneralUtil.getLoginUser().getUid());   
//                            
//                         ServiceUtil.getInstance().getEmployeeService().create(emp);   
                        }   
                    }   
              }
              list.add(emp);
            }   
  
    } catch (FileNotFoundException e) {   
        e.printStackTrace();   
    } catch (IOException e) {   
        e.printStackTrace();   
    }    
return list;   
  }

Answer 7

ervletOutputStream os = response.getOutputStream();// 获取输出流
response.reset();
response.setHeader("Content-Disposition", "attachment; filename=\""
+ URLEncoder.encode("名称", "UTF8") + ".xls"
+ "\"");// 设定输出文件头
response.setContentType("application/msexcel");// 设定输出类型
out.flush();
out.close();试试