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:

        public static string ToUtf8String(String s)

        {

            StringBuilder sb = new StringBuilder();

            for (int i = 0; i < s.Length; i++)

            {

                char c = s[i];

                if (c >= 0 && c <= 255)

                {

                    sb.Append(c);

                }

                else

                {

                    byte[] b;

                    try

                    {

                        b = Encoding.UTF8.GetBytes(c.ToString());

                    }

                    catch (Exception ex)

                    {

                        b = new byte[0];

                    }

                    for (int j = 0; j < b.Length; j++)

                    {

                        int k = b[j];

                        if (k < 0) k += 256;



                        sb.Append("%" + Convert.ToString(k, 16).ToUpper());

                    }

                }

            }

            return sb.ToString();

        }

JAVA:

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

其中用到的转换方法:

public static 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 = new byte[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();

    }