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DouyinApi.Services/BlogArticleServices.cs

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+using AutoMapper;
+using DouyinApi.Common;
+using DouyinApi.IRepository.Base;
+using DouyinApi.IServices;
+using DouyinApi.Model.Models;
+using DouyinApi.Model.ViewModels;
+using DouyinApi.Services.BASE;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace DouyinApi.Services
+{
+    public class BlogArticleServices : BaseServices<BlogArticle>, IBlogArticleServices
+    {
+        IMapper _mapper;
+        public BlogArticleServices(IMapper mapper)
+        {
+            this._mapper = mapper;
+        }
+        /// <summary>
+        /// 获取视图博客详情信息
+        /// </summary>
+        /// <param name="id"></param>
+        /// <returns></returns>
+        public async Task<BlogViewModels> GetBlogDetails(long id)
+        {
+            // 此处想获取上一条下一条数据，因此将全部数据list出来，有好的想法请提出
+            //var bloglist = await base.Query(a => a.IsDeleted==false, a => a.bID);
+            var blogArticle = (await base.Query(a => a.bID == id && a.bcategory == "技术博文")).FirstOrDefault();
+
+            BlogViewModels models = null;
+
+            if (blogArticle != null)
+            {
+                models = _mapper.Map<BlogViewModels>(blogArticle);
+
+                //要取下一篇和上一篇，以当前id开始，按id排序后top(2)，而不用取出所有记录
+                //这样在记录很多的时候也不会有多大影响
+                var nextBlogs = await base.Query(a => a.bID >= id && a.IsDeleted == false && a.bcategory == "技术博文", 2, "bID");
+                if (nextBlogs.Count == 2)
+                {
+                    models.next = nextBlogs[1].btitle;
+                    models.nextID = nextBlogs[1].bID;
+                }
+                var prevBlogs = await base.Query(a => a.bID <= id && a.IsDeleted == false && a.bcategory == "技术博文", 2, "bID desc");
+                if (prevBlogs.Count == 2)
+                {
+                    models.previous = prevBlogs[1].btitle;
+                    models.previousID = prevBlogs[1].bID;
+                }
+
+                blogArticle.btraffic += 1;
+                await base.Update(blogArticle, new List<string> { "btraffic" });
+            }
+
+            return models;
+
+        }
+
+
+        /// <summary>
+        /// 获取博客列表
+        /// </summary>
+        /// <returns></returns>
+        [Caching(AbsoluteExpiration = 10)]
+        public async Task<List<BlogArticle>> GetBlogs()
+        {
+            var bloglist = await base.Query(a => a.bID > 0, a => a.bID);
+
+            return bloglist;
+
+        }
+    }
+}