public IActionResult MagnetSearch(string key, string index)
{
key = key.Trim();
if (string.IsNullOrEmpty(key))
{
return(RedirectToAction("index"));
}
int.TryParse(index, out int currentIndex);
currentIndex = currentIndex < 1 ? 1 : currentIndex > 100 ? 100 : currentIndex; //最多100页
var pageSize = 10;
var result = new MagnetLinkSearchResultViewModel();
//只缓存前20页数据 1分钟
if (currentIndex > 20)
{
result = _magnetSearchService.MagnetLinkSearch(key, currentIndex, pageSize);
}
else
{
var cacheKey = $"s_m_{key}_{currentIndex}";
if (!_memoryCache.TryGetValue(cacheKey, out result))
{
result = _magnetSearchService.MagnetLinkSearch(key, currentIndex, pageSize);
_memoryCache.Set(cacheKey, result, new DateTimeOffset(DateTime.Now.AddMinutes(5)));
}
}
return(View(result));
}
public MagnetLinkSearchResultViewModel MagnetLinkSearch(string key, int pageIndex, int pageSize = 10)
{
var result = new MagnetLinkSearchResultViewModel()
{
SearchId = Guid.NewGuid().ToString(),
SearchKey = key,
PageIndex = pageIndex,
PageSize = pageSize
};
var response = _client.Search <MagnetLink>(s => s
.Index(IndexName)
.Type(TypeName)
.From((pageIndex - 1) * pageSize)
.Size(pageSize)
//.Query(q => q.
// MultiMatch(mm => mm.Fields(fs => fs.Fields(f => f.Name, f => f.InfoHash)).Query(key)
// ))
//.Query(q => q.
// Match(m => m.Field(f => f.Name).Query(key)
//))
//.Query(q => q
// .MatchAll()
//)
.Query(q => q
.Bool(b => b
.Should(sd => sd
.Term(t => t.Field(f => f.InfoHash).Value(key)),
sd => sd
.Match(m => m
.Field(f => f.Name)
.Query(key)
)
)))
.Highlight(h => h
//.PreTags("<em>")
//.PostTags("</em>")
.Fields(
fs => fs.Field(f => f.Name)
)
)
//.Sort(st => st.Descending(d => d.CreateTime))
.Source(sc => sc.IncludeAll())
);
result.Totals = (int)response.Total;
result.FindTime = response.Took.ToString();//毫秒
foreach (var hit in response.Hits)
{
var item = hit.Source;
//高亮
var highlightValue = new HighlightHit();
if (hit.Highlights.TryGetValue("name", out highlightValue))
{
item.Name = highlightValue.Highlights.FirstOrDefault() ?? item.Name;
}
result.SearchResult.Add(item);
}
return(result);
}