private List <NewsForShow> NewsSearch(string keyword, string author_id)
{
//如果keyword为空，不做要求
if (keyword == null)
{
keyword = "";
}
//如果authorid为空，则不做要求
bool isAuthorId = true;
if (author_id == string.Empty || author_id == null)
{
isAuthorId = false;
}
var newsList = from news in _context.News
where (KeywordSearch.ContainsKeywords(news.title + " " + news.content, keyword)) &&
((!isAuthorId) || (news.author_id == author_id))
orderby news.post_date descending
select news;
if (newsList.Count() == 0)
{
throw (new Exception("没有找到满足条件的数据"));
}
List <NewsForShow> showList = new List <NewsForShow>();
string contract_content = new string("");
foreach (news nwsrow in newsList)
{
if (nwsrow.content.Count() > 50)
{
contract_content = nwsrow.content.Substring(0, 50) + "...";
}
else
{
contract_content = nwsrow.content;
}
NewsForShow temp = new NewsForShow()
{
author_name = nwsrow.author_name,
author_id = nwsrow.author_id,
content = contract_content,
news_id = nwsrow.news_id,
part = nwsrow.part,
post_date = nwsrow.post_date.ToString(),
title = nwsrow.title
};
showList.Add(temp);
}
return(showList);
}
public async Task <IActionResult> Getnews(string news_id)
{
try
{
if (!ModelState.IsValid)
{
throw (new Exception("Bad Request,ModelState:" + ModelState.ToString()));
}
var news = await _context.News.FindAsync(news_id);
if (news == null)
{
throw (new Exception("没有找到满足条件的数据"));
}
NewsForShow newsshow = new NewsForShow()
{
author_name = news.author_name,
author_id = news.author_id,
content = news.content,
news_id = news.news_id,
part = news.part,
post_date = news.post_date.ToString(),
title = news.title
};
RestfulResult.RestfulData <NewsForShow> rr = new RestfulResult.RestfulData <NewsForShow>();
rr.code = 1;
rr.message = "成功查找新闻";
rr.data = newsshow;
return(new JsonResult(rr));
}
catch (Exception exc)
{
RestfulResult.RestfulData rr = new RestfulResult.RestfulData(0, exc.Message);
return(new JsonResult(rr));
}
}
