/// <summary>
/// 1.0 HttpGet评论分页 采用递归的方法直接在后台拼接好Ajax评论内容及分页Html,再将json返回到前台
/// </summary>
/// <param name="id">博文id</param>
/// <returns></returns>
public JsonResult WrapComment(int id)
{
int pageIndex = Request["pageIndex"] == null ? 1 : int.Parse(Request["pageIndex"]);
int pageSize = Request["pageSize"] == null ? 4 : int.Parse(Request["pageSize"]);
//1.1 选出当前博文的该页内的一级评论
List <Comment> topCmtList = commentService.GetPagedList(pageIndex, pageSize, c => c.CmtArtId == id && c.Status == 1 && c.ParentId == 0, c => c.SubTime, true);
//1.2 创建评论框区域的大容器
StringBuilder cmtHtmlStr = new StringBuilder("<ol class=\"commentlist\">");
//1.3 递归获取各级评论,并追加到cmtHtmlString中
PackCmt(topCmtList, cmtHtmlStr);
//1.4 合上评论框区域的大容器,评论区域HTML拼接完毕
cmtHtmlStr.Append("</ol>");
//1.5 评论总Html
string cmtHtmlString = cmtHtmlStr.ToString();
//1.6 评论分页Html
string cmtPagerString = string.Empty;
//1.7 该篇博文的所有评论(连带回复)
int totalCount = commentService.GetDataListBy(c => c.CmtArtId == id && c.Status == 1 && c.ParentId == 0).Count;//分页插件用
if (totalCount > 0)
{
cmtPagerString = PagerHelper.GeneratePagerString(pageIndex, pageSize, totalCount);
cmtPagerString = "<div class='pagination'>" + "<ul>" + cmtPagerString + "</ul>" + "</div>";
}
//1.8 构造json数据
JsonModel jsonData = new JsonModel()
{
CoreData = cmtHtmlString,
Status = 1,
Message = "成功",
GotoUrl = HttpContext.Request.Url.AbsoluteUri,
PageNavStr = cmtPagerString
};
return(Json(jsonData, JsonRequestBehavior.AllowGet));
}
/// <summary>
/// 2.0 Index页-Ajax获取首页博文列表;显示5条
/// </summary>
/// <param name="id">博文类别(UrlParameter.optional)</param>
/// <returns>JSON</returns>
public ActionResult WrapArtList(int id)
{
int pageIndex = Request["pageIndex"] == null ? 1 : int.Parse(Request["pageIndex"]);
int pageSize = Request["pageSize"] == null ? 8 : int.Parse(Request["pageSize"]);
List <Article> articleList = new List <Article>();
int totalCount = 0;
if (id == 0) //取所有博文，对应于“首页”<Home/Index/0>
{
articleList = articleService.GetPagedList(pageIndex, pageSize, a => a.Status == 1, a => a.SubTime, true);
totalCount = articleService.GetDataListBy(a => a.Status == 1).Count; //总条数
}
else //取响应板块的博文，对应于“导航栏”<Home/Index/6>
{
articleList = articleService.GetPagedList(pageIndex, pageSize, a => a.CategoryId == id && a.Status == 1, a => a.SubTime, true);
totalCount = articleService.GetDataListBy(a => a.CategoryId == id && a.Status == 1).Count; //总条数
}
//视图模型需要类别名称和博文基本信息
List <ArticleViewModel> articleViewList = new List <ArticleViewModel>();
foreach (Article item in articleList)
{
//1.0 获取博文类别名
string categoryName = item.Category.Name;
//2.0 获取博文关键词 关键词可为空
string[] keywords = null;
List <string> keylist = new List <string>();
if (!string.IsNullOrEmpty(item.Keywords))
{
//关键词规则约定：以空格分开
keywords = item.Keywords.Split(' ');
foreach (var word in keywords)
{
if (word != " ")
{
keylist.Add(word);
}
}
}
//取前五个关键词
keywords = keylist.Take(5).ToArray();
//3.0 获取评论总数：
int commentCount = commentService.GetDataListBy(c => c.CmtArtId == item.Id && c.Status == 1).Count;
//4.0 构造视图模型
ArticleViewModel artViewModel = new ArticleViewModel()
{
Id = item.Id,
Title = item.Title,
SubTime = item.SubTime.ToShortDateString(),
CategoryName = categoryName,
ViewCount = item.ViewCount,
CommentCount = commentCount,
Digg = item.Digg,
Contents = StringHelper.StringCut(item.ContentsRaw, 600), //ContentsRaw为不包含html标签的文本
Keywords = keywords //可能为空，为空则View中不显示
};
articleViewList.Add(artViewModel);
}
//5.0 构造分页html-json
string PagerNavString = PagerHelper.GeneratePagerString(pageIndex, pageSize, totalCount);
JsonModel jsonData = new JsonModel()
{
CoreData = articleViewList,
Status = 1,
Message = "成功",
GotoUrl = HttpContext.Request.Url.AbsolutePath,
PageNavStr = PagerNavString
};
return(Json(jsonData, JsonRequestBehavior.AllowGet));//Json方法默认只接受post请求
}