iOS 替换服务器返回HTML文本中的 &mdash &mi &hellip &rdquo &lsquo &rsquo &ldquo &darr

    html = [html stringByReplacingOccurrencesOfString:@" " withString:@" "];
    html = [html stringByReplacingOccurrencesOfString:@"&mdash" withString:@"—"];
    html = [html stringByReplacingOccurrencesOfString:@""" withString:@"\""];
    html = [html stringByReplacingOccurrencesOfString:@"&hellip" withString:@"..."];
    html = [html stringByReplacingOccurrencesOfString:@"&rdquo" withString:@"”"];
    html = [html stringByReplacingOccurrencesOfString:@"&lsquo" withString:@"‘"];
    html = [html stringByReplacingOccurrencesOfString:@"&rsquo" withString:@"’"];
    html = [html stringByReplacingOccurrencesOfString:@"&ldquo" withString:@"“"];
    html = [html stringByReplacingOccurrencesOfString:@"&darr" withString:@"↓"];
    html = [html stringByReplacingOccurrencesOfString:@"·" withString:@"·"];

• 每个符号后面加上“;”就可以了
  比如：html = [html stringByReplacingOccurrencesOfString:@"& n b s p ;" withString:@" "];

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