HttpWebRequest：post数据到博客园

public HttpResponseMessage GetNextNews(int pageIndex=2)
        {
            NewsManage news = new NewsManage();
            return toJson(news.GetNextNews("http://www.cnblogs.com/mvc/AggSite/PostList.aspx", pageIndex));
        }

 

public List<T_News> GetNextNews(string url,int pageIndex=2)
        {
            string result = "";
            HttpWebRequest request = null;
            try
            {
                //paraData表示提交参数，以&符分隔
                string paraData =string.Format("CategoryType=SiteHome&ParentCategoryId=0&CategoryId=808&PageIndex={0}&TotalPostCount=4000&ItemListActionName=PostList",pageIndex);
                request = (HttpWebRequest)WebRequest.Create(url);
                request.Method = "post";//以post方式提交
                /*
                 1、form的enctype属性为编码方式，常用的2种：application/x-www-form-urlencoded和multipart/form-data
                 2、默认为application/x-www-form-urlencoded，（1）、action为get方式时，游览器用application/x-www-form-urlencoded的编码方式
                 * 把form数据换成字符串(key1=value1&key2=value2&key3=value3...)，然后把字符串append到url后面，用?分隔；
                 * （2）、如果action为post方式，游览器把form数据封装到http body中，然后发送到server
                 3、如果存在type=file的控件元素，就要用到multipart/form-data，浏览器会把整个表单以控件为单位分割，
                 * 并为每个部分加上Content-Disposition(form-data或者file),Content-Type(默认为text/plain),name(控件name)等信息，并加上分割符(boundary)
                 */

                request.ContentType = "application/x-www-form-urlencoded";
                //request.ContentType = "appliction/json";
                using (Stream stream = request.GetRequestStream())
                {
                    //提交数据
                    byte[] bytes = Encoding.UTF8.GetBytes(paraData);
                    stream.Write(bytes,0,bytes.Length);
                }
                //获取响应
                using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)//返回Internet资源响应
                {
                    using (Stream responseStream = response.GetResponseStream())//获取响应流
                    {
                        using (StreamReader reader = new StreamReader(responseStream,Encoding.UTF8))//以特定格式读取数据流
                        {
                            result = reader.ReadToEnd();
                        }
                    }
                }
            }
            catch
            {
                
            }
            return GetNextNews(result);
        }

 

public List<T_News> GetNextNews(string htmlContent)
        {
            List<T_News> newsList = new List<T_News>();
            /*
             1、\s*表示多个空格
             2、(?<href>[^""]*)把不是""的所有其他字符匹配，然后放在href组里
             3、(?<title>[^>]*)把不是>的所有其他字符放在title组里
             */
            string strPattern = "<a\\s*class=\"titlelnk\"\\s*href=\"http://www.cnblogs.com/(?<href>[^\"\"]*)\"\\s*target=\"_blank\">(?<title>[^>]*)</a>";
            Regex regex = new Regex(strPattern, RegexOptions.IgnoreCase);
            if (regex.IsMatch(htmlContent))
            {
                MatchCollection matchCollection = regex.Matches(htmlContent);
                foreach (Match match in matchCollection)
                {
                    newsList.Add(new T_News {Title=match.Groups["title"].ToString(),Content=match.Groups["href"].ToString()});
                }
            }
            return newsList;
        }

前端调用

var url = "http://10.100.22.54:8095/api/NewsManager/GetNextNews";//请求地址部署在IIS上的webapi
            var dataParam = { pageIndex: pageIndex };
            $.get(url, dataParam, function (data) {
                $ul.empty();
                $.each(data, function (key, value) {
                    var title = value.Title;
                    $ul.append('<li class="list-li"><div class="con" data-href=' + value.Content + '>'
                        + (title.gblen() > 40 ? title.gbsub(37) : title)
                        + '<div class="btn" data-id=' + value.ID + '>删除</div>'
                        + '</li></div>');
                })
            }, "json").done(function () {//数据加载成功后执行，done为回调函数
                $(".list").height($(window).height() - $("header").height() - 10);
            });