let searchword: String = "柴油0#"
/// encodeURIComponent编码方式,会对特殊符号编码
/// 方法一
// let toSearchword = searchword.stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet.URLQueryAllowedCharacterSet())!
/// 方法二
// let toSearchword = CFURLCreateStringByAddingPercentEscapes(nil, searchword, "!*'();:@&=+$,/?%#[]", nil, CFStringBuiltInEncodings.UTF8.rawValue)
/// encodeURI编码,不会对特殊符号编码
let toSearchword = CFURLCreateStringByAddingPercentEscapes(nil, searchword, nil, "!*'();:@&=+$,/?%#[]", CFStringBuiltInEncodings.UTF8.rawValue)
print(toSearchword)