/// <summary>
/// 去除非法字符，防止SQL注入，并截取指定位数的字符
/// </summary>
/// <param name="content">内容</param>
/// <param name="maxLength">截取长度</param>
/// <returns></returns>
public static string InputText(string content, int maxLength = 0)
{
if (VerifyDataHelper.IsNullOrWhiteSpace(content))
{
return(string.Empty);
}
StringBuilder retVal = new StringBuilder();
content = content.Trim();
if (content.Length > maxLength && maxLength > 0)
{
content = content.Substring(0, maxLength);
}
for (int i = 0; i < content.Length; i++)
{
switch (content[i])
{
case '"':
retVal.Append(""");
break;
case '<':
retVal.Append("<");
break;
case '>':
retVal.Append(">");
break;
default:
retVal.Append(content[i]);
break;
}
}
retVal.Replace("'", " ");
return(retVal.ToString());
}
/// <summary>
/// 把元素以参数名称升序排序，并按照指定的格式拼接成新的字符串
/// 【常用于：百度/支付宝-生成加密Sign】
/// </summary>
/// <param name="parameters">数据源</param>
/// <param name="concatSymbol">连接符</param>
/// <param name="separatorSymbol">分隔符</param>
/// <param name="passNullKey">是否跳过Key为空的数据</param>
/// <param name="passNullValue">是否跳过Value为空的数据</param>
/// <param name="notInKeys">需要跳过处理Keys</param>
/// <returns>拼接完成的字符串</returns>
public static string SortedJoinString(Dictionary <string, object> parameters, string concatSymbol = "=", string separatorSymbol = "&", bool passNullKey = true, bool passNullValue = false, List <string> notInKeys = null)
{
try
{
if (parameters == null || parameters.Count <= 0)
{
throw new Exception("Dictionary Is Null");
}
var sortedParams = new SortedDictionary <string, object>(parameters);
var iterator = sortedParams.GetEnumerator();
var basestring = new List <string>();
while (iterator.MoveNext())
{
var key = iterator.Current.Key;
var value = iterator.Current.Value;
if (passNullKey && VerifyDataHelper.IsNullOrWhiteSpace(key))
{
continue;
}
if (passNullValue && value == null)
{
continue;
}
if (notInKeys == null || !notInKeys.Contains(key))
{
basestring.Add(key + concatSymbol + value);
}
}
return(string.Join(separatorSymbol, basestring));
}
catch
{
return(string.Empty);
}
}
/// <summary>
/// 将手机号转换为 186****5720
/// </summary>
/// <param name="mobile">手机号</param>
/// <returns></returns>
public static string ToFuzzyMobile(string mobile)
{
return(VerifyDataHelper.IsMobile(mobile) ? mobile.Substring(0, 3) + "****" + mobile.Substring(7) : "");
}