Redis连同Jquery UI Autocomplete-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_36479244/article/details/80256155

这篇博客介绍了如何结合Redis数据库和Jquery UI的Autocomplete功能，实现一个高效的搜索建议系统。作者分享了在学习Redis的过程中，如何将缓存数据与前端交互的实践操作，提供了相关参考资料。

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<input type="text" id="word" name="word" class="Stext" placeholder="输入药品的名称" />
    <input name="" type="button" value="搜索" class="Sbutton" onclick="search(document.getElementById('word').value)" />
    <script>
        //候选字（输入框提示候选字）
        $(".Stext").autocomplete({
            minChars: 0,    //自动完成激活之前填入的最小字符    
            width: 400,     //提示的宽度，溢出隐藏    
            scrollHeight: 300,   //提示的高度，溢出显示滚动条    
            matchContains: false,    //包含匹配，就是data参数里的数据，是否只要包含文本框里的数据就显示    
            autoFill: true,    //自动填充
            source: function (request, response) {
                $.ajax({
                    type:"post",
                    url: "/Public/CheckKey.ashx",
                    dataType: "json",
                    data: {
                        searchDbInforItem: $("#word").val()
                    },
                    success: function (data) {
                        var s = $.map(data, function (item) {
                            return {
                                value: item
                            }
                        });
                        response(s);
                    }
                });
            },
            minLength: 1,
            select: function (event, ui) {
                $(".Stext").val(ui.value);
            }
        });
    </script>

public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            string searchDbInforItem = context.Request.Form["searchDbInforItem"];
            //string searchDbInforItem = "龙血竭胶囊";

            List<KeyValuePair<string, string>> result = new List<KeyValuePair<string, string>>();
            using (var redisClient = PooledRedisHelper.GetClient())
            {
                if (redisClient.DbSize == 0)
                {
                    RedisClient client = new RedisClient("127.0.0.1", 6379);
                    client.FlushAll();
                    //查出所有数据。
                    List<ProductInfo> list = Products.GetSearchKeyList();
                    for (int i = 0; i < list.Count; i++)
                    {
                        //逐字分割取出来的数据，插入到Redis缓存中
                        string[] keys = new string[list[i].prd_title.Length];
                        for (int j = 0; j < list[i].prd_title.Length; j++)
                        {
                            keys[j] = list[i].prd_title.Substring(j, 1);
                            client.AddItemToSortedSet(keys[j], list[i].prd_title);//这儿有个bug并没有存取所有的数据到Redis中。暂时没有找到原因
                            client.ExpireEntryAt(keys[j], DateTime.Now.AddDays(10));
                        }
                        client.AddItemToSortedSet(list[i].prd_title, list[i].prd_title);
                        client.ExpireEntryAt(list[i].prd_title, DateTime.Now.AddDays(10));
                    }
                    List<string> returnResult = redisClient.GetRangeFromSortedList(searchDbInforItem, 0, 20);
                    if (returnResult != null)
                    {
                        for (int i = 0; i < returnResult.Count; i++)
                        {
                            string title = returnResult[i];
                            result.Add(new KeyValuePair<string, string>(title, title));
                        }
                        List<string> returnList = new List<string>();
                        foreach (var item in result)
                        {
                            returnList.Add(item.Value);
                        }
                        JavaScriptSerializer json = new JavaScriptSerializer();
                        string returnJson = json.Serialize(returnList);
                        context.Response.Write(returnJson);
                    }
                }
                else
                {
                    List<string> returnResult = redisClient.GetRangeFromSortedList(searchDbInforItem, 0, 20);
                    if (returnResult != null)
                    {
                        for (int i = 0; i < returnResult.Count; i++)
                        {
                            string title = returnResult[i];
                            result.Add(new KeyValuePair<string, string>(title, title));
                        }
                        List<string> returnList = new List<string>();
                        foreach (var item in result)
                        {
                            returnList.Add(item.Value);
                        }
                        JavaScriptSerializer json = new JavaScriptSerializer();
                        string returnJson = json.Serialize(returnList);
                        context.Response.Write(returnJson);
                    }
                }
            }
        }

引用到了一个类

 // 数据库
        public static int InitialDb = 1;
        private static PooledRedisClientManager instance = null;
        public static PooledRedisClientManager Instance
        {
            get
            {
                if (instance == null)
                {
                    instance = new PooledRedisClientManager(new string[] { "127.0.0.1:6379" });//注意这儿直接写IP和端口就行了。
                }

                return instance;
            }
        }

        static PooledRedisHelper()
        {
        }

        public static IRedisClient GetClient()
        {
            return Instance.GetClient();
        }
    }