C# VS2019 WebService创建与发布，并部署到Windows Server 2012R

2022-10-22 19:36:30

前言

　　上一次数据库灾备和性能优化后，数据库专家建议，在不扩容的情况下，客户端不能再频繁的扫描数据库了！一句惊醒梦中人，因为我也发现数据库越来越卡了，自从上个项目上线后，就出现了这个情况。后来分析其原因，发现客户端每3秒中扫描一次数据库，一共5000+客户端，可想而知，频繁扫描严重影响到数据库性能。所以，我这边准备采用三层架构来解决这个问题，将现有的业务逻辑全部移植到WebService服务器上，客户端通过WebService服务，进而实现对数据库的操作。

　　此篇只是记录一下，便于后续的学习，不足之处请指正。

创建WebService服务

新建ASP.NET Web解决方案，命名为WebServiceTest，框架选择.NET Framework 4,如下图；

添加一个Web服务，命名为WebServiceOracleTest，如下图；

开始写一些基础Helper类；

 using System;

 using System.Collections.Generic;

 using System.Linq;

 using System.Web;

 using System.Data;

 using System.Configuration;

 using Oracle.ManagedDataAccess.Client;

 using System.Text;

 using System.IO;

 namespace WebServiceTest

 {

     public class OracleHelper

     {

         //连接字符串

         public static string oraConnStr = "Data Source=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=XXX)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=XXX)));Persist Security Info=True;User ID=XXX;Password=XXX";

         #region Oracle数据库操作通用方法

         /// <summary>

         /// 测试数据库连接是否正常

         /// </summary>

         /// <param name="strConn"></param>

         /// <returns></returns>

         public static bool CheckOracleConnect()

         {

             try

             {

                 OracleConnection conn = new OracleConnection();

                 conn.ConnectionString = oraConnStr;

                 conn.Open();

                 return true;

             }

             catch

             {

                 return false;

             }

         }

         /// <summary>

         /// 执行数据库非查询操作,返回受影响的行数

         /// </summary>

         /// <param name="connectionString">数据库连接字符串</param>

         /// <param name="cmdType">命令的类型</param>

         /// <param name="cmdText">Oracle存储过程名称或PL/SQL命令</param>

         /// <param name="cmdParms">命令参数集合</param>

         /// <returns>当前查询操作影响的数据行数</returns>

         public static int ExecuteNonQuery(string connectionString, CommandType cmdType, string cmdText, params OracleParameter[] cmdParms)

         {

             OracleCommand cmd = new OracleCommand();

             using (OracleConnection conn = new OracleConnection(connectionString))

             {

                 PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);

                 int val = cmd.ExecuteNonQuery();

                 cmd.Parameters.Clear();

                 return val;

             }

         }

         /// <summary>

         /// 执行数据库事务非查询操作,返回受影响的行数

         /// </summary>

         /// <param name="transaction">数据库事务对象</param>

         /// <param name="cmdType">Command类型</param>

         /// <param name="cmdText">Oracle存储过程名称或PL/SQL命令</param>

         /// <param name="cmdParms">命令参数集合</param>

         /// <returns>当前事务查询操作影响的数据行数</returns>

         public static int ExecuteNonQuery(OracleTransaction trans, CommandType cmdType, string cmdText, params OracleParameter[] cmdParms)

         {

             OracleCommand cmd = new OracleCommand();

             PrepareCommand(cmd, trans.Connection, trans, cmdType, cmdText, cmdParms);

             int val = cmd.ExecuteNonQuery();

             cmd.Parameters.Clear();

             return val;

         }

         /// <summary>

         /// 执行数据库非查询操作,返回受影响的行数

         /// </summary>

         /// <param name="connection">Oracle数据库连接对象</param>

         /// <param name="cmdType">Command类型</param>

         /// <param name="cmdText">Oracle存储过程名称或PL/SQL命令</param>

         /// <param name="cmdParms">命令参数集合</param>

         /// <returns>当前查询操作影响的数据行数</returns>

         public static int ExecuteNonQuery(OracleConnection connection, CommandType cmdType, string cmdText, params OracleParameter[] cmdParms)

         {

             if (connection == null)

                 throw new ArgumentNullException("当前数据库连接不存在");

             OracleCommand cmd = new OracleCommand();

             PrepareCommand(cmd, connection, null, cmdType, cmdText, cmdParms);

             int val = cmd.ExecuteNonQuery();

             cmd.Parameters.Clear();

             return val;

         }

         /// <summary>

         /// 执行数据库查询操作,返回OracleDataReader类型的内存结果集

         /// </summary>

         /// <param name="connectionString">数据库连接字符串</param>

         /// <param name="cmdType">命令的类型</param>

         /// <param name="cmdText">Oracle存储过程名称或PL/SQL命令</param>

         /// <param name="cmdParms">命令参数集合</param>

         /// <returns>当前查询操作返回的OracleDataReader类型的内存结果集</returns>

         public static OracleDataReader ExecuteReader(string connectionString, CommandType cmdType, string cmdText, params OracleParameter[] cmdParms)

         {

             OracleCommand cmd = new OracleCommand();

             OracleConnection conn = new OracleConnection(connectionString);

             try

             {

                 PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);

                 OracleDataReader reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);

                 cmd.Parameters.Clear();

                 return reader;

             }

             catch

             {

                 cmd.Dispose();

                 conn.Close();

                 throw;

             }

         }

         /// <summary>

         /// 执行数据库查询操作,返回DataSet类型的结果集

         /// </summary>

         /// <param name="connectionString">数据库连接字符串</param>

         /// <param name="cmdType">命令的类型</param>

         /// <param name="cmdText">Oracle存储过程名称或PL/SQL命令</param>

         /// <param name="cmdParms">命令参数集合</param>

         /// <returns>当前查询操作返回的DataSet类型的结果集</returns>

         public static DataSet ExecuteDataSet(string connectionString, CommandType cmdType, string cmdText, params OracleParameter[] cmdParms)

         {

             OracleCommand cmd = new OracleCommand();

             OracleConnection conn = new OracleConnection(connectionString);

             DataSet ds = null;

             try

             {

                 PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);

                 OracleDataAdapter adapter = new OracleDataAdapter();

                 adapter.SelectCommand = cmd;

                 ds = new DataSet();

                 adapter.Fill(ds);

                 cmd.Parameters.Clear();

             }

             catch

             {

                 throw;

             }

             finally

             {

                 cmd.Dispose();

                 conn.Close();

                 conn.Dispose();

             }

             return ds;

         }

         /// <summary>

         /// 执行数据库查询操作,返回DataTable类型的结果集

         /// </summary>

         /// <param name="connectionString">数据库连接字符串</param>

         /// <param name="cmdType">命令的类型</param>

         /// <param name="cmdText">Oracle存储过程名称或PL/SQL命令</param>

         /// <param name="cmdParms">命令参数集合</param>

         /// <returns>当前查询操作返回的DataTable类型的结果集</returns>

         public static DataTable ExecuteDataTable(string connectionString, CommandType cmdType, string cmdText, params OracleParameter[] cmdParms)

         {

             OracleCommand cmd = new OracleCommand();

             OracleConnection conn = new OracleConnection(connectionString);

             DataTable dt = null;

             try

             {

                 PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);

                 OracleDataAdapter adapter = new OracleDataAdapter();

                 adapter.SelectCommand = cmd;

                 dt = new DataTable();

                 adapter.Fill(dt);

                 cmd.Parameters.Clear();

             }

             catch

             {

                 throw;

             }

             finally

             {

                 cmd.Dispose();

                 conn.Close();

                 conn.Dispose();

             }

             return dt;

         }

         /// <summary>

         /// 执行数据库查询操作,返回结果集中位于第一行第一列的Object类型的值

         /// </summary>

         /// <param name="connectionString">数据库连接字符串</param>

         /// <param name="cmdType">命令的类型</param>

         /// <param name="cmdText">Oracle存储过程名称或PL/SQL命令</param>

         /// <param name="cmdParms">命令参数集合</param>

         /// <returns>当前查询操作返回的结果集中位于第一行第一列的Object类型的值</returns>

         public static object ExecuteScalar(string connectionString, CommandType cmdType, string cmdText, params OracleParameter[] cmdParms)

         {

             OracleCommand cmd = new OracleCommand();

             OracleConnection conn = new OracleConnection(connectionString);

             object result = null;

             try

             {

                 PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);

                 result = cmd.ExecuteScalar();

                 cmd.Parameters.Clear();

             }

             catch

             {

                 throw;

             }

             finally

             {

                 cmd.Dispose();

                 conn.Close();

                 conn.Dispose();

             }

             return result;

         }

         ///    <summary>

         ///    执行数据库事务查询操作,返回结果集中位于第一行第一列的Object类型的值

         ///    </summary>

         ///    <param name="trans">一个已存在的数据库事务对象</param>

         ///    <param name="commandType">命令类型</param>

         ///    <param name="commandText">Oracle存储过程名称或PL/SQL命令</param>

         ///    <param name="cmdParms">命令参数集合</param>

         ///    <returns>当前事务查询操作返回的结果集中位于第一行第一列的Object类型的值</returns>

         public static object ExecuteScalar(OracleTransaction trans, CommandType cmdType, string cmdText, params OracleParameter[] cmdParms)

         {

             if (trans == null)

                 throw new ArgumentNullException("当前数据库事务不存在");

             OracleConnection conn = trans.Connection;

             if (conn == null)

                 throw new ArgumentException("当前事务所在的数据库连接不存在");

             OracleCommand cmd = new OracleCommand();

             object result = null;

             try

             {

                 PrepareCommand(cmd, conn, trans, cmdType, cmdText, cmdParms);

                 result = cmd.ExecuteScalar();

                 cmd.Parameters.Clear();

             }

             catch

             {

                 throw;

             }

             finally

             {

                 trans.Dispose();

                 cmd.Dispose();

                 conn.Close();

                 conn.Dispose();

             }

             return result;

         }

         /// <summary>

         /// 执行数据库查询操作,返回结果集中位于第一行第一列的Object类型的值

         /// </summary>

         /// <param name="conn">数据库连接对象</param>

         /// <param name="cmdType">Command类型</param>

         /// <param name="cmdText">Oracle存储过程名称或PL/SQL命令</param>

         /// <param name="cmdParms">命令参数集合</param>

         /// <returns>当前查询操作返回的结果集中位于第一行第一列的Object类型的值</returns>

         public static object ExecuteScalar(OracleConnection conn, CommandType cmdType, string cmdText, params OracleParameter[] cmdParms)

         {

             if (conn == null) throw new ArgumentException("当前数据库连接不存在");

             OracleCommand cmd = new OracleCommand();

             object result = null;

             try

             {

                 PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);

                 result = cmd.ExecuteScalar();

                 cmd.Parameters.Clear();

             }

             catch

             {

                 throw;

             }

             finally

             {

                 cmd.Dispose();

                 conn.Close();

                 conn.Dispose();

             }

             return result;

         }

         /// <summary>

         /// 执行数据库命令前的准备工作

         /// </summary>

         /// <param name="cmd">Command对象</param>

         /// <param name="conn">数据库连接对象</param>

         /// <param name="trans">事务对象</param>

         /// <param name="cmdType">Command类型</param>

         /// <param name="cmdText">Oracle存储过程名称或PL/SQL命令</param>

         /// <param name="cmdParms">命令参数集合</param>

         private static void PrepareCommand(OracleCommand cmd, OracleConnection conn, OracleTransaction trans, CommandType cmdType, string cmdText, OracleParameter[] cmdParms)

         {

             if (conn.State != ConnectionState.Open)

                 conn.Open();

             cmd.Connection = conn;

             cmd.CommandText = cmdText;

             if (trans != null)

                 cmd.Transaction = trans;

             cmd.CommandType = cmdType;

             if (cmdParms != null)

             {

                 foreach (OracleParameter parm in cmdParms)

                     cmd.Parameters.Add(parm);

             }

         }

         /// <summary>

         /// 将.NET日期时间类型转化为Oracle兼容的日期时间格式字符串

         /// </summary>

         /// <param name="date">.NET日期时间类型对象</param>

         /// <returns>Oracle兼容的日期时间格式字符串（如该字符串：TO_DATE('2007-12-1','YYYY-MM-DD')）</returns>

         public static string GetOracleDateFormat(DateTime date)

         {

             return "TO_DATE('" + date.ToString("yyyy-M-dd") + "','YYYY-MM-DD')";

         }

         /// <summary>

         /// 将.NET日期时间类型转化为Oracle兼容的日期格式字符串

         /// </summary>

         /// <param name="date">.NET日期时间类型对象</param>

         /// <param name="format">Oracle日期时间类型格式化限定符</param>

         /// <returns>Oracle兼容的日期时间格式字符串（如该字符串：TO_DATE('2007-12-1','YYYY-MM-DD')）</returns>

         public static string GetOracleDateFormat(DateTime date, string format)

         {

             if (format == null || format.Trim() == "") format = "YYYY-MM-DD";

             return "TO_DATE('" + date.ToString("yyyy-M-dd") + "','" + format + "')";

         }

         /// <summary>

         /// 将指定的关键字处理为模糊查询时的合法参数值

         /// </summary>

         /// <param name="source">待处理的查询关键字</param>

         /// <returns>过滤后的查询关键字</returns>

         public static string HandleLikeKey(string source)

         {

             if (source == null || source.Trim() == "") return null;

             source = source.Replace("[", "[]]");

             source = source.Replace("_", "[_]");

             source = source.Replace("%", "[%]");

             return ("%" + source + "%");

         }

         #endregion

     }

 }

写几个和Oracle交互的函数；

 [WebMethod(Description = "测试数据库连接,无输入参数,返回bool类型true或者false")]

         public bool CheckOraConnect()

         {

             return OracleHelper.CheckOracleConnect();

         }

         [WebMethod(Description = "输入日期型参数,返回string类型周别")]

         public string GetWeek(string sDate)

         {

             try

             {

                 // 创建参数对象

                 OracleParameter[] param = new OracleParameter[] { new OracleParameter(":date1", OracleDbType.Varchar2) };

                 param[].Value = sDate;

                 // 返回 datatable转换成string；

                 DataSet ds = new DataSet();

                 ds = OracleHelper.ExecuteDataSet(OracleHelper.oraConnStr, CommandType.Text, CommonSQL.sqlGetWeek, param);

                 if (ds.Tables.Count >  && ds.Tables[].Rows.Count > )

                 {

                     return ds.Tables[].Rows[][].ToString();

                 }

                 else

                 {

                     return "Not Found";

                 }

             }

             catch (Exception ex)

             {

                 return ex.ToString();

             }

         }

配置Web.config(添加一段，解决“测试窗体只能用于来自本地计算机的请求”的异常)

      <webServices>

         <protocols>

           <add name="HttpSoap"/>

           <add name="HttpPost"/>

           <add name="HttpGet"/>

           <add name="Documentation"/>

         </protocols>

       </webServices>