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一、API接口的编码
1、首页的页面代码：
protected void Page_Load(object sender, EventArgs e) { /* * 请求路径：http://xxxx/index.aspx?appkey=&security=&t=&method=&... * appkey是调用者身份码（系统分配） * security是当前请求安全码（安全码=MD5（Key + Method），key为系统分配或调用者自行设定） * t是请求模块（Member用户模块 Berth泊位模块 Transaction交易模块 Operation运维模块 Equipment设备模块 Other其他模块） * method是请求函数 */ Response.Expires = 0;//页面使用后立即过期 Response.CacheControl = "no-cache";//设置页面不缓存在临时文件中. DateTime dtStart = DateTime.Now; if (!IsPostBack) { string strT = SZRPP.Common.SZRPPRequest.GetString("t"); //构造分类请求转发地址 string strHeadUrl = ConfigurationManager.AppSettings[strT]; string strQueryUrl = strT + "API/Index.aspx"; string strReturn = ""; string strParm = GetAllParameter(); StreamReader sr = null; HttpWebResponse res = null; if (strT != "" && strHeadUrl != "") { try { //请求转发 // HttpWebRequest 是 WebRequest 的派生类，专门用于 Http HttpWebRequest req = HttpWebRequest.Create(strHeadUrl + strQueryUrl) as System.Net.HttpWebRequest; //设置请求方式 req.Method = "POST"; req.ContentType = "application/x-www-form-urlencoded"; //写入流对象 StreamWriter requestWriter = new StreamWriter(req.GetRequestStream()); //写入请求参数 requestWriter.Write(strParm); //释放写入流对象 requestWriter.Close(); requestWriter = null; //GetResponse 方法才真的发送请求，等待服务器返回 res = req.GetResponse() as HttpWebResponse; //以流的形式表示的回应内容 Stream str = res.GetResponseStream(); //将字节流包装为高级的字符流，以便于读取文本内容 sr = new StreamReader(str, System.Text.Encoding.UTF8); //读取响应内容 strReturn = sr.ReadToEnd(); } catch (Exception ex) { //记录异常日志 SZRPP.Common.Utils.WriteLogFile("请求重定向异常：" + ex.Message + " [" + strHeadUrl + strQueryUrl + "?" + strParm + "]", "异常日志"); } finally { //关闭字符流，字符流底层的字节流将会自动关闭 if (sr != null) sr.Close(); if (res != null) res.Close(); } } Response.ClearContent(); //输出响应内容 Response.Write(Input.LostHTML(Input.URLDecode(strReturn))); //TimeSpan tsTotal = DateTime.Now - dtStart; //SZRPP.Common.Utils.WriteLogFile("请求内容：" + strParm + "\r\n响应内容：" + strReturn + "\r\n耗时：" + tsTotal.TotalSeconds + "秒 来源：" + SZRPPRequest.GetIP() + "\r\n\r\n", "-" + DateTime.Now.Hour + strT + "响应日志", "接口监控详情"); } Response.End(); } /// <summary> /// 获取所有参数重新拼接 /// </summary> private string GetAllParameter() { StringBuilder sb = new StringBuilder(); foreach (string strKey in Request.Params.AllKeys) { if (SZRPPRequest.GetString(strKey) != "") { if (sb.Length > 0) sb.Append("&"); sb.Append(strKey + "=" + SZRPPRequest.GetString(strKey)); } } return sb.ToString(); }
2、SZRPPRequest类方法（SZRPP.Common.SZRPPRequest.GetString("t")）
/// <summary> /// 获得Url或表单参数的值, 先判断Url参数是否为空字符串, 如为True则返回表单参数的值 /// </summary> /// <param name="strName">参数</param> /// <returns>Url或表单参数的值</returns> public static string GetString(string strName) { if ("".Equals(GetQueryString(strName))) { strName =GetFormString(strName); return strName; } else { strName = GetQueryString(strName); return strName; } } /// <summary> /// 获得指定Url参数的值 /// </summary> /// <param name="strName">Url参数</param> /// <returns>Url参数的值</returns> public static string GetQueryString(string strName) { if (HttpContext.Current.Request.QueryString[strName] == null) { return ""; } return HttpContext.Current.Request.QueryString[strName]; } /// <summary> /// 获得指定Url参数的值 /// </summary> /// <param name="strName">Url参数</param> /// <returns>Url参数的值</returns> public static string GetQueryString(string strName) { if (HttpContext.Current.Request.QueryString[strName] == null) { return ""; } return HttpContext.Current.Request.QueryString[strName]; }
3、API目录及发布在IIS上后的访问格式：
通过浏览器访问的格式：http://10.10.40.184:6066/Index.aspx?appkey=123456&security=4564646545455&t=Berth&method=getberth
其中【Berth】为【berthAPI】目录，【getberth】为【berthAPI】目录下index.aspx.cs下的【getberth】方法
4、API返回内容页面代码的编写（如【berthAPI】目录下的【index.aspx.cs】代码：
protected void Page_Load(object sender, EventArgs e) { APIHelper.CheckRequestSecurity(); Response.Expires = 0; Response.CacheControl = "no-cache"; Response.ClearContent(); if (!IsPostBack) { string strMethod = SZRPPRequest.GetString("method").ToString("filtersql").ToLower(); try { switch (strMethod) { //2.1 获取深圳市行政区列表 case "getcanton": GetSZCanton(); break; //2.2 获取某行政区下片区列表 case "getarea": GetAreaByCa(); break; //2.3 获取某片区下路段列表 case "getsection": GetSectionByAr(); break; //2.4 获取某路段下泊位列表 case "getberthbyse": GetBerthBySE(); break; //2.5 获取附近泊位列表（多少米以内） case "getbearbyberth": GetBearByBerth(); break; //2.6 获取行政区下路段列表 case "getsectionbyca": GetSectionByCA(); break; //2.7 获取路段的收费规则 case "getchargingrules": GetChargingRules(); break; case "getberth": GetBerthInfo(); break; default: break; } } catch (System.Threading.ThreadAbortException) { } catch (Exception ex) { //记录异常日志 SZRPP.Common.Utils.WriteLogFile("BerthAPI发生异常【" + ex.TargetSite.Name + "】：" + ex.Message + " " + ex.StackTrace, "异常日志"); } } Response.End(); } #region 获取深圳市行政区列表 /// <summary> /// 获取深圳市行政区列表 /// </summary> private void GetSZCanton() { StringBuilder sb = new StringBuilder(); CantonBll cantonBll = new CantonBll(); DataTable dt = null; if (DataCache.GetCache("APICanton") == null) { dt = cantonBll.GetList(); DataCache.SetCache("APICanton", dt); } else { dt = (DataTable)DataCache.GetCache("APICanton"); } if (dt != null && dt.Rows.Count > 0) { sb.Append("{\"count\":" + dt.Rows.Count + ","); sb.Append("\"items\":"); sb.Append("["); foreach (DataRow dr in dt.Rows) { sb.Append("{"); sb.Append("\"CantonId\":\"" + dr["CantonId"].ToString() + "\","); sb.Append("\"CantonCode\":\"" + dr["CantonCode"].ToString() + "\","); sb.Append("\"CantonName\":\"" + dr["CantonName"].ToString() + "\","); sb.Append("\"CantonLat\":\"" + dr["CantonLat"].ToString() + "\","); sb.Append("\"CantonLng\":\"" + dr["CantonLng"].ToString() + "\","); sb.Append("\"BerthNums\":\"" + dr["BerthNums"].ToString() + "\""); sb.Append("},"); } sb.Remove(sb.Length - 1, 1); sb.Append("]}"); APIHelper.ReturnData(APIHelper.ReturnStatus.成功, "success", "成功", sb.ToString()); } else { APIHelper.ReturnData(APIHelper.ReturnStatus.失败, "no_data", "没有行政区", ""); } } #endregion #region 单泊位查询 /// <summary> /// 单泊位信息查询 /// </summary> private void GetBerthInfo() { //泊位编号 string strBerthCode = SZRPPRequest.GetString("berthcode").ToString("filtersql"); BerthBll berthBll = new BerthBll(); DataTable dtBerth = berthBll.GetBerthInfo(strBerthCode); if (dtBerth != null && dtBerth.Rows.Count > 0) { DataRow dr = dtBerth.Rows[0]; StringBuilder sb = new StringBuilder(); //泊位编号 sb.Append("{\"berthcode\":\"" + dr["BerthCode"].ToString() + "\""); //片区 sb.Append(",\"areaid\":\"" + dr["AreaId"].ToString() + "\""); //行政区 sb.Append(",\"cantonid\":\"" + dr["CantonId"].ToString() + "\""); //泊位状态 sb.Append(",\"berthstatus\":\"" + dr["BerthStatus"].ToString() + "\""); //经度 sb.Append(",\"berthlongitude\":\"" + dr["BerthLongitude"].ToString() + "\""); //纬度 sb.Append(",\"berthlatitude\":\"" + dr["BerthLatitude"].ToString() + "\""); //停车状态 sb.Append(",\"parkstatus\":\"" + dr["ParkStatus"].ToString() + "\"}"); APIHelper.ReturnData(APIHelper.ReturnStatus.成功, "success", "成功", sb.ToString()); } else APIHelper.ReturnData(APIHelper.ReturnStatus.失败, "berth_not_exist", "抱歉，您输入的泊位号不存在", ""); } #endregion #region 获取所有的行政区和片区 private void GetCantonAndArea() { StringBuilder sb = new StringBuilder(); #region 获取行政区 DataTable dtCanton = null; if (DataCache.GetCache("APICanton") == null) { CantonBll cantonBll = new CantonBll(); dtCanton = cantonBll.GetList(); DataCache.SetCache("APICanton", dtCanton); } else { dtCanton = (DataTable)DataCache.GetCache("APICanton"); } #endregion #region 获取片区 DataTable dtArea = null; if (DataCache.GetCache("APIArea") == null) { AreaBll areaBll = new AreaBll(); dtArea = areaBll.GetAreaList(); DataCache.SetCache("APIArea", dtArea); } else { dtArea = (DataTable)DataCache.GetCache("APIArea"); } #endregion if (dtCanton != null && dtCanton.Rows.Count > 0) { if (dtArea != null && dtArea.Rows.Count > 0) { sb.Append("{\"cantons\":"); sb.Append("["); foreach (DataRow dr in dtCanton.Rows) { sb.Append("{"); sb.Append("\"CantonId\":\"" + dr["CantonId"].ToString() + "\","); sb.Append("\"CantonName\":\"" + dr["CantonName"].ToString() + "\""); sb.Append("},"); } sb.Remove(sb.Length - 1, 1); sb.Append("],"); sb.Append("\"areas\":"); sb.Append("["); foreach (DataRow dr in dtArea.Rows) { sb.Append("{"); sb.Append("\"AreaId\":\"" + dr["AreaId"].ToString() + "\","); sb.Append("\"CantonId\":\"" + dr["CantonId"].ToString() + "\","); sb.Append("\"AreaName\":\"" + dr["AreaName"].ToString() + "\""); sb.Append("},"); } sb.Remove(sb.Length - 1, 1); sb.Append("]}"); APIHelper.ReturnData(APIHelper.ReturnStatus.成功, "success", "成功", sb.ToString()); } else { APIHelper.ReturnData(APIHelper.ReturnStatus.失败, "no_Area", "没有片区数据", ""); } } else { APIHelper.ReturnData(APIHelper.ReturnStatus.失败, "no_Canton", "没有行政区数据", ""); } } #endregion
二、接口的请求
private readonly string url = ConfigurationManager.AppSettings["API"];
private readonly string versontype = ConfigurationManager.AppSettings["versontype"];
private readonly string appkey = ConfigurationManager.AppSettings["appkey"];
private readonly string security = ConfigurationManager.AppSettings["security"];
public ActionResult Login() { string login = SZRTCRequest.GetString("login").ToString("filtersql"); string up = SZRTCRequest.GetString("up").ToString("filtersql"); string lastUrl = SZRTCRequest.GetString("u"); string safeCode = SZRTCRequest.GetString("safeCode").ToString("filtersql"); Session["Login"] = null; ViewBag.LastUrl = lastUrl.ToString();//记录session失效前最后一次访问路径 if (!Request.IsAjaxRequest()) { return View(); } Dictionary<string, object> dic=null; string strJson = ""; try { StringBuilder sb = new StringBuilder(); sb.Append(url); sb.Append("MemberAPI/Index.aspx?versontype=" + versontype); sb.Append("&appkey="+appkey); sb.Append("&security=" + oldsecurity); sb.Append("&t=Member&method=login&mobileno=" + login + "&pwd=" + MD5_SHA.EncryptPassword(up)); sb.Append("&sign="+sign); strJson = CommonLogic.GetJsonStr(sb.ToString()); var jss = new JavaScriptSerializer(); dic = (Dictionary<string, object>)jss.DeserializeObject(strJson); } catch (Exception ex) { Utils.WriteLogFile("调用Login方法时报错，错误信息：" + ex.Message, "登录异常"); } if (dic != null) { int status = int.Parse(dic["status"].ToString()); string msg = dic["msg"].ToString(); if (status == 1) { object data = dic["data"]; Session["Login"] = data; } return Content(strJson); } else { return Content("-1"); } } /// <summary> /// 根据路径返回json字符 /// </summary> /// <param name="url">调用接口路径</param> /// <returns>返回json字符</returns> public static string GetJsonStr(string url) { string message = ""; string strJson = ""; try { HttpWebRequest req = null; HttpWebResponse webResp = null; req = (HttpWebRequest)WebRequest.Create(url); req.Method = "POST"; // Post method req.ContentType = "text/html"; // content type StreamWriter writer = new StreamWriter(req.GetRequestStream()); writer.WriteLine(message); writer.Close(); webResp = (HttpWebResponse)req.GetResponse(); Stream answer = webResp.GetResponseStream(); StreamReader answerData = new StreamReader(answer, Encoding.UTF8); strJson = answerData.ReadToEnd(); } catch (Exception ex) { Utils.WriteLogFile("接口调用出现异常，异常信息："+ex.Message,"接口调用异常"); } return strJson; }
通过HttpWebRequest请求与HttpWebResponse响应方式发布接口与访问接口
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原文地址：http://www.cnblogs.com/lichengcai/p/4529897.html
