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   源码介绍

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using HISWebInterface.Model;
using Newtonsoft.Json;
using RDH.Data;
using RDH.Data.Access;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Web;

namespace HISWebInterface
{
    /// <summary>
    /// Service 的摘要说明
    /// </summary>
    public class Service : IHttpHandler
    {

        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            try
            {
                Stream stream = context.Request.InputStream;
                if (stream.Length > 0)
                {
                    StreamReader reader = new StreamReader(stream);
                    string str = reader.ReadToEnd();

                    if (VerifySignature(str))
                    {
                        Json json = JsonConvert.DeserializeObject<Json>(str);
                        if (json.InterfaceUserId == ConfigHellper.InterfaceUserId)
                        {
                            switch (json.Method)
                            {
                                case "ruidaheng_get_userInfo":
                                    context.Response.Write(ToJson(json.Method, 0, "", 0, "", GetUserInfo()));
                                    break;
                                case "ruidaheng_get_deptInfo":
                                    context.Response.Write(ToJson(json.Method, 0, "", 0, "", GetDeptInfo()));
                                    break;
                                default:
                                    context.Response.Write(ToJson(json.Method, -1, "没有相应接口", -1, "", ""));
                                    break;
                            }
                        }
                        else
                        {
                            context.Response.Write(ToJson(json.Method, -1, "用户错误", -1, "", ""));
                        }
                    }
                    else
                    {

                        context.Response.Write(ToJson("", -1, "验证失败", -1, "", ""));
                    }
                }
                else
                {
                    context.Response.Write(ToJson("", -1, "请求的数据不能为空！", -1, "", ""));
                }
            }
            catch (Exception ex)
            {
                context.Response.Write(ToJson("", -1, ex.Message, -1, "", ""));
            }
        }

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
        //将结果转化为JSON格式
        private String ToJson(string Method, int ReturnCode, string ReturnMess, int ResultCode, string ResultMess, String items)
        {
            Dictionary<string, string> dics = new Dictionary<string, string>();
            dics.Add("ReturnCode", ReturnCode.ToString());
            dics.Add("ReturnMess", ReturnMess);
            if (ReturnCode == 0)
            {
                dics.Add("InterfaceUserId", ConfigHellper.InterfaceUserId);
                dics.Add("NonceStr", GenerateMD5("ruidaheng_get_deptInfo"   DateTime.Now));
                dics.Add("ResultCode", ResultCode.ToString());
                dics.Add("ResultMess", ResultMess);
                dics.Add("Items", items);
                
                string str = getParamSrc(dics);

                str = str   "&key="   ConfigHellper.WebKey;

                string sign = GenerateMD5(str).ToUpper();

                dics.Add("Sign", sign);
                dics.Remove("Items");

                dics.Add("Items", items.Replace("\"", "\\\""));
            }

            string result = "{\""   String.Join("\",\"", dics.Select(x => string.Join("\":\"", x.Key, x.Value)))   "\"}";

            return result;

        }
        /// <summary>
        /// 查询用户信息
        /// </summary>
        /// <returns>JSON格式的字符串</returns>

        private String GetUserInfo()
        {
            List<UserInfo> users = null;
            using (CommonConnnectionSessionScope scope = new CommonConnnectionSessionScope(ConfigHellper.SateServerConnection))
            {
                string strsql =
               "select * from UserInfo_V ";

                users = SqlMapper.Query<UserInfo>(ConnectionFactory.Current.GetSessionConnection(), strsql)
                     .ToList();
            }
            return JsonConvert.SerializeObject(users);
        }
        /// <summary>
        /// 查询部门信息
        /// </summary>
        /// <returns>JSON格式的字符串</returns>
        private String GetDeptInfo()
        {
            List<DeptInfo> depts = null;
            using (CommonConnnectionSessionScope scope = new CommonConnnectionSessionScope(ConfigHellper.SateServerConnection))
            {
                string strsql =
               "select * from OrganizeInfo_V t";

                depts = SqlMapper.Query<DeptInfo>(ConnectionFactory.Current.GetSessionConnection(), strsql)
                     .ToList();
            }
            return JsonConvert.SerializeObject(depts);
        }
        /// <summary>
        /// 验证签名，确保数据准确
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        private bool VerifySignature(string str)
        {
            Dictionary<string, string> dict = JsonConvert.DeserializeObject<Dictionary<string, string>>(str);
            string resultSign = "";
            dict.TryGetValue("Sign", out resultSign);
            dict.Remove("Sign");

            string resultStr = getParamSrc(dict);// String.Join("&", dict.Select(x => string.Join("=", x.Key, x.Value)));

            resultStr = resultStr   "&key="   ConfigHellper.WebKey;

            string sign = GenerateMD5(resultStr).ToUpper();

            return resultSign == sign;
        }
        /// <summary>
        /// 将字典转化为需要的字符串
        /// </summary>
        /// <param name="paramsMap"></param>
        /// <returns></returns>

        private string getParamSrc(Dictionary<string, string> paramsMap)
        {
            var vDic = (from objDic in paramsMap orderby objDic.Key ascending select objDic);
            StringBuilder str = new StringBuilder();
            foreach (KeyValuePair<string, string> kv in vDic)
            {
                string key = kv.Key;
                string value = kv.Value;
                if (!string.IsNullOrEmpty(value))
                    str.Append(key   "="   value   "&");
            }
            String result = str.ToString().Substring(0, str.ToString().Length - 1);
            return result;
        }
        /// <summary>
        /// MD5字符串加密
        /// </summary>
        /// <param name="txt"></param>
        /// <returns>加密后字符串</returns>
        private string GenerateMD5(string strText)
        {
            using (var md5 = MD5.Create())
            {
                var signDataBytes = md5.ComputeHash(Encoding.GetEncoding("utf-8").GetBytes(strText));
                return BitConverter.ToString(signDataBytes).Replace("-", "");
            }
        }
    }
}