简单windows服务

首先包括定时器的控制，和服务的开始，也包括加载xml的方法，以及JSON反序列化的方法和Get请求的方法。

首先上代码

using Gdky.Common;
using Gdky.CS.DBUtility;
using GdkyWeatherService;
using MySql.Data.MySqlClient;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Configuration;
using System.Data;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Net;
using System.Runtime.Serialization.Json;
using System.ServiceProcess;
using System.Text;
using System.Timers;
using System.Xml;

namespace WeatherService
{
    public partial class Service1 : ServiceBase
    {
        /// <summary>
        /// 所有需要采集天气的城市编码
        /// </summary>
        public List<cityConfig> CitysConfig = new List<cityConfig>();
        /// <summary>
        /// 采集天气方式
        /// </summary>
        public string type { get; set; }
        /// <summary>
        /// 采集预测天气时间点
        /// </summary>
        public string[] hours { get; set; }
        public string xmlPath = AppDomain.CurrentDomain.SetupInformation.ApplicationBase + "CityConfig.xml";
        public Service1()
        {
            InitializeComponent();
        }
        DbHelperMySQL helper = new DbHelperMySQL();
        protected override void OnStart(string[] args)
        {

            try
            {
                ///采集天气的方式 0：天气网 1:新浪网
                type = helper.Query("select * from sys_dictionary where ID='134'").Tables[0].Rows[0]["WorkValue"].ToString();
                ///预测天气采集时间点
                string hoursStr = helper.Query("select * from sys_dictionary where ID='135'").Tables[0].Rows[0]["WorkValue"].ToString();
                if (string.IsNullOrEmpty(hoursStr))
                {
                    hoursStr = "2:00,08:00,12:00";
                }
                hours = hoursStr.Split(',');
                LoadCityConfigXml(type = "0");
                LogHelper.WriteWebLog("天气采集服务启动...");
                StartWeatherServer();
            }
            catch (Exception ex)
            {
                LogHelper.WriteWebLog(ex.Message + "OnStart方法");
            }
        }
        private void StartWeatherServer()
        {
            try
            {
                System.Timers.Timer timer_weater = new System.Timers.Timer(60000); //间隔60s
                timer_weater.AutoReset = true;
                timer_weater.Enabled = false;  //执行一次
                timer_weater.Elapsed += new ElapsedEventHandler(ExecutionCode);
                timer_weater.Start();
            }
            catch (Exception ex)
            {
                LogHelper.WriteWebLog(ex.Message + "StartWeatherServer方法");
            }
        }
        protected override void OnStop()
        {
            LogHelper.WriteWebLog("天气采集服务停止...");
        }

        private void ExecutionCode(object source, System.Timers.ElapsedEventArgs e)
        {
            try
            {
                if (DateTime.Now.ToString("mm") == "00") //每整点报告运行状态
                    LogHelper.WriteWebLog(string.Format("天气采集服务正在运行..."));
                #region 固定时刻采集天气预报
                if (hours.Contains(DateTime.Now.ToString("HH:mm")))//固定时刻采集天气预报 
                {
                    Result weather = new Result();
                    //天气采集逻辑
                    foreach (cityConfig item in CitysConfig)
                    {
                        weather = GetWeatherData(item.cityCode);
                        if (weather.code != 200)
                        {
                            LogHelper.WriteWebLog(string.Format("【Info】:{0}获取天气信息失败--{1}", item.cityCode, weather.message));
                            continue;
                        }
                        if (weather.data.day7.Count > 0 && weather.data.h24.Count > 0)//删除sta_weatherforecast中大于等于今天的数据
                        {
                            if (!DeleteWeatherForecast6And24(item))
                                LogHelper.WriteWebLog("【Info】:删除sta_weatherforecast数据失败");
                        }
                        foreach (DayData day in weather.data.day7)
                        {
                            if (!InsertWeatherForeCast(day, item))
                                LogHelper.WriteWebLog("【Info】:插入sta_weatherforecast数据失败");
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteWebLog(ex.Message + "ExecutionCode方法");
            }
            
            #endregion
        }
        /// <summary>
        /// 获取未来7天天气预报及当前天气状况
        /// </summary>
        /// <param name="cityid"></param>
        /// <returns></returns>
        private Result GetWeatherData(string city)
        {
            try
            {
                string json = HttpGet("http://xxx.xxx.xxx.xxx", "city=" + city + "&type=" + type);
                Result result = JsonDeserialize<Result>(json);
                LogHelper.WriteWebLog(string.Format("获取地区：{0}【{1}】天气信息成功", city, result.data.now.cityname));
                return result;
            }
            catch (Exception ex)
            {
                LogHelper.WriteWebLog("【Error】:请求getWeather接口时发生错误--" + ex.Message);
                return new Result();
            }

        }
        #region 逻辑方法
        /// <summary>
        /// 插入sta_weatherforecast数据
        /// </summary>
        /// <param name="day"></param>
        /// <param name="cityCode"></param>
        /// <returns></returns>
        private bool InsertWeatherForeCast(DayData day, cityConfig city)
        {
            bool signal = false;
            try
            {
                string sql = @"INSERT INTO sta_weatherforecast (GetTime, CityId,TempAvg,TempMax,TempMin,Weather,Wind) VALUES (@GetTime, @CityId,@TempAvg,@TempMax,@TempMin,@Weather,@Wind)";
                MySqlParameter[] sqlParams =
                {
                    new MySqlParameter("@GetTime",day.Date),
                    new MySqlParameter("@CityId",city.cityID),
                    new MySqlParameter("@TempAvg",((day.maxTemp+day.minTemp)/2)),
                    new MySqlParameter("@TempMax",day.maxTemp),
                    new MySqlParameter("@TempMin",day.minTemp),
                    new MySqlParameter("@Weather",day.wea),
                    new MySqlParameter("@Wind",day.win)
                };
                
                int num = helper.ExecuteSql2(sql, sqlParams);
                if (num > 0)
                {
                    signal = true;
                }
                else
                {
                    LogHelper.WriteWebLog(string.Format("【Info】:插入sta_weatherforecast数据失败"));
                    signal = false;
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteWebLog("【Error】:插入sta_weatherforecast数据异常--" + ex.Message);
                return false;
            }
            return signal;
        }
        /// <summary>
        /// 删除sta_weatherforecast大于今天的数据
        /// </summary>
        /// <param name="cityCode"></param>
        /// <returns></returns>
        private bool DeleteWeatherForecast6And24(cityConfig city)
        {
            bool signal = false;
            try
            {
                //保留前23天的数据
                string sql = @"Delete from sta_weatherforecast Where CityId='" + city.cityID + "' and GetTime>=DATE_FORMAT('" + DateTime.Now.Date + "','%Y-%m-%d')";
                DbHelperMySQL helper = new DbHelperMySQL();
                int num = helper.ExecuteSql2(sql);
                if (num >= 0)
                {
                    signal = true;
                }
                else
                {
                    LogHelper.WriteWebLog(string.Format("【Info】:删除sta_weatherforecast数据失败"));
                    signal = false;
                }
                return signal;
            }
            catch (Exception ex)
            {
                LogHelper.WriteWebLog("【Error】:删除sta_weatherforecast数据异常--" + ex.Message);
                return false;
            }
        }
        #endregion
        #region 通用方法
        public string HttpGet(string Url, string postDataStr)
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url + (postDataStr == "" ? "" : "?") + postDataStr);
            request.Method = "GET";
            request.ContentType = "text/html;charset=UTF-8";

            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            Stream myResponseStream = response.GetResponseStream();
            StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));
            string retString = myStreamReader.ReadToEnd();
            myStreamReader.Close();
            myResponseStream.Close();

            return retString;
        }

        /// <summary>
        /// JSON序列化
        /// </summary>
        public string JsonSerializer<T>(T t)
        {
            DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T));
            MemoryStream ms = new MemoryStream();
            ser.WriteObject(ms, t);
            string jsonString = Encoding.UTF8.GetString(ms.ToArray());
            ms.Close();
            return jsonString;
        }

        /// <summary>
        /// JSON反序列化
        /// </summary>
        public T JsonDeserialize<T>(string jsonString)
        {
            DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T));
            MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonString));
            T obj = (T)ser.ReadObject(ms);
            return obj;
        }
        #endregion

        #region 加载XML
        /// <summary>
        /// 加载城市列表
        /// </summary>
        /// <param name="type"></param>
        private void LoadCityConfigXml(string type)
        {
            try
            {
                CitysConfig = new List<cityConfig>();   //初始化
                XmlDocument xmlDoc = new XmlDocument();
                xmlDoc.Load(xmlPath);
                XmlNode configsXml = xmlDoc.SelectSingleNode("CityConfigs");
                XmlNodeList cityConfigXmls = configsXml.ChildNodes;
                foreach (XmlNode item in cityConfigXmls)
                {
                    cityConfig cityConfig = new cityConfig();
                    cityConfig.cityName = item.Attributes["cityName"].Value;
                    cityConfig.cityCode = item.Attributes["cityCode_" + type].Value;
                    cityConfig.cityID = item.Attributes["cityID"].Value;
                    XmlNodeList databaseXmls = item.ChildNodes;
                    //foreach (XmlNode db in databaseXmls)
                    //{
                    //    cityConfig.databases.Add(db.Attributes["name"].Value, GdkyEncrypt.GDKY_DESDecrypt(db.InnerText.Trim()));
                    //}
                    CitysConfig.Add(cityConfig);
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteWebLog("【Error】:加载CityConfigXML时发生错误--" + ex.Message);
            }
        }
        #endregion
        public class cityConfig
        {
            public string cityCode { get; set; }
            public string cityName { get; set; }
            /// <summary>
            /// 数据库里city
            /// </summary>
            public string cityID { get; set; }

            public Dictionary<string, string> databases = new Dictionary<string, string>();
        }
    }
}