将中文转码为正常的URl格式

站长苏飞

[C#] 纯文本查看 复制代码

/// <summary>
    /// 为字符串中的非英文字符编码
    /// </summary>
    /// <param name="s"></param>
    /// <returns></returns>
    public static string ToHexString(string s)
    {
        char[] chars = s.ToCharArray();
        StringBuilder builder = new StringBuilder();
        for (int index = 0; index < chars.Length; index++)
        {
            bool needToEncode = NeedToEncode(chars[index]);
            if (needToEncode)
            {
                string encodedString = ToHexString(chars[index]);
                builder.Append(encodedString);
            }
            else
            {
                builder.Append(chars[index]);
            }
        }

        return builder.ToString();
    }

    /// <summary>
    ///指定 一个字符是否应该被编码
    /// </summary>
    /// <param name="chr"></param>
    /// <returns></returns>
    private static bool NeedToEncode(char chr)
    {
        string reservedChars = "$-_.+!*'(),@=&";

        if (chr > 127)
            return true;
        if (char.IsLetterOrDigit(chr) || reservedChars.IndexOf(chr) >= 0)
            return false;

        return true;
    }

    /// <summary>
    /// 为非英文字符串编码
    /// </summary>
    /// <param name="chr"></param>
    /// <returns></returns>
    private static string ToHexString(char chr)
    {
        UTF8Encoding utf8 = new UTF8Encoding();
        byte[] encodedBytes = utf8.GetBytes(chr.ToString());
        StringBuilder builder = new StringBuilder();
        for (int index = 0; index < encodedBytes.Length; index++)
        {
            builder.AppendFormat("%{0}", Convert.ToString(encodedBytes[index], 16));
        }
        return builder.ToString();
    }

把要转码的字符串直接调用这个方法就行

[C#] 纯文本查看 复制代码

ToHexString

Cheungnotes

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