iOS html5文本解析

在某些场景会遇到需要将网页文本解析为字符串并保留格式的问题，下面列举OC/swift的解析方法

OC

缺少P标签的解析,参考swift

-(NSString*)html5CodeToString {

    NSString *str = [self stringByReplacingOccurrencesOfString:@"&lt;" withString:@"<"];

    str = [strstringByReplacingOccurrencesOfString:@"&gt;" withString:@">"];

    str = [strstringByReplacingOccurrencesOfString:@"&amp;" withString:@"&"];

    str = [strstringByReplacingOccurrencesOfString:@"&quot;" withString:@"“"];

    str = [strstringByReplacingOccurrencesOfString:@"&reg;" withString:@"®"];

    str = [strstringByReplacingOccurrencesOfString:@"&copy;" withString:@"©"];

    str = [strstringByReplacingOccurrencesOfString:@"&trade;" withString:@"™"];

    str = [strstringByReplacingOccurrencesOfString:@"&ensp;" withString:@" "];

    str = [strstringByReplacingOccurrencesOfString:@"&emsp;" withString:@" "];

    str = [strstringByReplacingOccurrencesOfString:@"&nbsp;" withString:@" "];

    returnstr;

}

swift

extension String {

    funchtml5CodeToString() ->String{

        varstr =self.replacingOccurrences(of:"&lt;", with:"<")

        str = str.replacingOccurrences(of:"&gt;", with:">")

        str = str.replacingOccurrences(of:"&amp;", with:"&")

        str = str.replacingOccurrences(of:"&quot;", with:"“<”")

        str = str.replacingOccurrences(of:"&reg", with:"©")

        str = str.replacingOccurrences(of:"&copy;", with:"©")

        str = str.replacingOccurrences(of:"&trade;", with:"™")

        str = str.replacingOccurrences(of:"&ensp;", with:" ")

        str = str.replacingOccurrences(of:"&emsp;", with:" ")

        str = str.replacingOccurrences(of:"&nbsp;", with:" ")

        str = str.replacingOccurrences(of:"<p>", with:"")

        str = str.replacingOccurrences(of:"</p>", with:"\n")

        returnstr

    }

}