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public 敏感词库 GetDic(string appName)
{
var cache = HttpRuntime.Cache;
var key = $"敏感词文件_应用_{appName}";
Chars = (敏感词库)cache[key];
if (Chars == null)
{
string datas = 从后台下载敏感词库定义文本(appName);
var words = datas.Split('|');
Chars = 敏感词库.生成倒排索引字典(words);
cache.Insert(key, Chars, new CacheDependency(fileName),Cache.NoAbsoluteExpiration, TimeSpan.FromMinutes(5));
}
return Chars;
}