文件下载中文文件名乱码

B/S应用中,下载一个附件保存时,中文文件名会乱码,在实际开发中经常遇到,现贴出C#和JAVA的解决方法:

C#:

Response.AppendHeader("Content-Disposition", "attachment;filename=" + Tools.toUtf8String(result));

其中用到的转换方法:

1publicstatic String toUtf8String(String s)
2       {
3            StringBuilder sb= new StringBuilder();
4           for (int i=0;i<s.Length;i++)
5           {
6               char c = s[i];
7               if (c >= 0&& c <= 255)
8               {
9                    sb.Append(c);
10                }
11               else
12               {
13                   byte[] b;
14                   try
15                   {
16                     b= Encoding.UTF8.GetBytes(c.ToString());
17                    }
18                   catch (Exception ex)
19                   {
20                        b= newbyte[0];
21                    }
22                   for (int j= 0; j< b.Length; j++)
23                   {
24                       int k = b[j];
25                       if (k < 0) k+= 256;
26                      
27                        sb.Append("%"+ Convert.ToString(k,16).ToUpper());
28                    }
29                }
30            }
31           return sb.ToString();
32        }
33
34

JAVA:

resp.addHeader("Content-Disposition","attachment;filename=" + Tools.toUtf8String(m_entityIndex.m_sName) + ".xls");

其中用到的转换方法:

publicstatic String toUtf8String(String s){
        StringBuffer sb= new StringBuffer();
       for (int i=0;i<s.length();i++){
           char c = s.charAt(i);
           if (c >= 0&& c <= 255){
                sb.append(c);
            } else{
               byte[] b;
               try {
                 b= new Character(c).toString().getBytes("utf-8");
                   //b = Character.toString(c).getBytes("utf-8");
                } catch (Exception ex){
                    System.out.println(ex);
                    b= newbyte[0];
                }
               for (int j= 0; j< b.length; j++){
                   int k = b[j];
                   if (k < 0) k+= 256;
                    sb.append("%"+ Integer.toHexString(k).
                    toUpperCase());
                }
            }
        }
       return sb.toString();
    }