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

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；

  1 using System;
  2 using System.Collections.Generic;
  3 using System.Linq;
  4 using System.Web;
  5 using System.Data;
  6 using System.Configuration;
  7 using Oracle.ManagedDataAccess.Client;
  8 using System.Text;
  9 using System.IO;
 10 
 11 namespace WebServiceTest
 12 {
 13     public class OracleHelper
 14     {
 15         //连接字符串
 16         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";
 17 
 18         #region Oracle数据库操作通用方法
 19         /// <summary>
 20         /// 测试数据库连接是否正常
 21         /// </summary>
 22         /// <param name="strConn"></param>
 23         /// <returns></returns>
 24         public static bool CheckOracleConnect()
 25         {
 26             try
 27             {
 28                 OracleConnection conn = new OracleConnection();
 29                 conn.ConnectionString = oraConnStr;
 30                 conn.Open();
 31                 return true;
 32             }
 33             catch
 34             {
 35                 return false;
 36             }
 37         }
 38 
 39         /// <summary>  
 40         /// 执行数据库非查询操作,返回受影响的行数  
 41         /// </summary>  
 42         /// <param name="connectionString">数据库连接字符串</param>
 43         /// <param name="cmdType">命令的类型</param>
 44         /// <param name="cmdText">Oracle存储过程名称或PL/SQL命令</param>  
 45         /// <param name="cmdParms">命令参数集合</param>  
 46         /// <returns>当前查询操作影响的数据行数</returns>  
 47         public static int ExecuteNonQuery(string connectionString, CommandType cmdType, string cmdText, params OracleParameter[] cmdParms)
 48         {
 49             OracleCommand cmd = new OracleCommand();
 50             using (OracleConnection conn = new OracleConnection(connectionString))
 51             {
 52                 PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);
 53                 int val = cmd.ExecuteNonQuery();
 54                 cmd.Parameters.Clear();
 55                 return val;
 56             }
 57         }
 58 
 59         /// <summary>  
 60         /// 执行数据库事务非查询操作,返回受影响的行数  
 61         /// </summary>  
 62         /// <param name="transaction">数据库事务对象</param>  
 63         /// <param name="cmdType">Command类型</param>  
 64         /// <param name="cmdText">Oracle存储过程名称或PL/SQL命令</param>  
 65         /// <param name="cmdParms">命令参数集合</param>  
 66         /// <returns>当前事务查询操作影响的数据行数</returns>  
 67         public static int ExecuteNonQuery(OracleTransaction trans, CommandType cmdType, string cmdText, params OracleParameter[] cmdParms)
 68         {
 69             OracleCommand cmd = new OracleCommand();
 70             PrepareCommand(cmd, trans.Connection, trans, cmdType, cmdText, cmdParms);
 71             int val = cmd.ExecuteNonQuery();
 72             cmd.Parameters.Clear();
 73             return val;
 74         }
 75 
 76         /// <summary>  
 77         /// 执行数据库非查询操作,返回受影响的行数  
 78         /// </summary>  
 79         /// <param name="connection">Oracle数据库连接对象</param>  
 80         /// <param name="cmdType">Command类型</param>  
 81         /// <param name="cmdText">Oracle存储过程名称或PL/SQL命令</param>  
 82         /// <param name="cmdParms">命令参数集合</param>  
 83         /// <returns>当前查询操作影响的数据行数</returns>  
 84         public static int ExecuteNonQuery(OracleConnection connection, CommandType cmdType, string cmdText, params OracleParameter[] cmdParms)
 85         {
 86             if (connection == null)
 87                 throw new ArgumentNullException("当前数据库连接不存在");
 88             OracleCommand cmd = new OracleCommand();
 89             PrepareCommand(cmd, connection, null, cmdType, cmdText, cmdParms);
 90             int val = cmd.ExecuteNonQuery();
 91             cmd.Parameters.Clear();
 92             return val;
 93         }
 94 
 95         /// <summary>  
 96         /// 执行数据库查询操作,返回OracleDataReader类型的内存结果集  
 97         /// </summary>  
 98         /// <param name="connectionString">数据库连接字符串</param>
 99         /// <param name="cmdType">命令的类型</param>
100         /// <param name="cmdText">Oracle存储过程名称或PL/SQL命令</param>  
101         /// <param name="cmdParms">命令参数集合</param>  
102         /// <returns>当前查询操作返回的OracleDataReader类型的内存结果集</returns>  
103         public static OracleDataReader ExecuteReader(string connectionString, CommandType cmdType, string cmdText, params OracleParameter[] cmdParms)
104         {
105             OracleCommand cmd = new OracleCommand();
106             OracleConnection conn = new OracleConnection(connectionString);
107             try
108             {
109                 PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);
110                 OracleDataReader reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
111                 cmd.Parameters.Clear();
112                 return reader;
113             }
114             catch
115             {
116                 cmd.Dispose();
117                 conn.Close();
118                 throw;
119             }
120         }
121 
122         /// <summary>  
123         /// 执行数据库查询操作,返回DataSet类型的结果集  
124         /// </summary>  
125         /// <param name="connectionString">数据库连接字符串</param>
126         /// <param name="cmdType">命令的类型</param>
127         /// <param name="cmdText">Oracle存储过程名称或PL/SQL命令</param>  
128         /// <param name="cmdParms">命令参数集合</param>  
129         /// <returns>当前查询操作返回的DataSet类型的结果集</returns>  
130         public static DataSet ExecuteDataSet(string connectionString, CommandType cmdType, string cmdText, params OracleParameter[] cmdParms)
131         {
132             OracleCommand cmd = new OracleCommand();
133             OracleConnection conn = new OracleConnection(connectionString);
134             DataSet ds = null;
135             try
136             {
137                 PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);
138                 OracleDataAdapter adapter = new OracleDataAdapter();
139                 adapter.SelectCommand = cmd;
140                 ds = new DataSet();
141                 adapter.Fill(ds);
142                 cmd.Parameters.Clear();
143             }
144             catch
145             {
146                 throw;
147             }
148             finally
149             {
150                 cmd.Dispose();
151                 conn.Close();
152                 conn.Dispose();
153             }
154 
155             return ds;
156         }
157 
158         /// <summary>  
159         /// 执行数据库查询操作,返回DataTable类型的结果集  
160         /// </summary>  
161         /// <param name="connectionString">数据库连接字符串</param>
162         /// <param name="cmdType">命令的类型</param>
163         /// <param name="cmdText">Oracle存储过程名称或PL/SQL命令</param>  
164         /// <param name="cmdParms">命令参数集合</param>  
165         /// <returns>当前查询操作返回的DataTable类型的结果集</returns>  
166         public static DataTable ExecuteDataTable(string connectionString, CommandType cmdType, string cmdText, params OracleParameter[] cmdParms)
167         {
168             OracleCommand cmd = new OracleCommand();
169             OracleConnection conn = new OracleConnection(connectionString);
170             DataTable dt = null;
171 
172             try
173             {
174                 PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);
175                 OracleDataAdapter adapter = new OracleDataAdapter();
176                 adapter.SelectCommand = cmd;
177                 dt = new DataTable();
178                 adapter.Fill(dt);
179                 cmd.Parameters.Clear();
180             }
181             catch
182             {
183                 throw;
184             }
185             finally
186             {
187                 cmd.Dispose();
188                 conn.Close();
189                 conn.Dispose();
190             }
191 
192             return dt;
193         }
194 
195         /// <summary>  
196         /// 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  
197         /// </summary>  
198         /// <param name="connectionString">数据库连接字符串</param>
199         /// <param name="cmdType">命令的类型</param>
200         /// <param name="cmdText">Oracle存储过程名称或PL/SQL命令</param>  
201         /// <param name="cmdParms">命令参数集合</param>  
202         /// <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>  
203         public static object ExecuteScalar(string connectionString, CommandType cmdType, string cmdText, params OracleParameter[] cmdParms)
204         {
205             OracleCommand cmd = new OracleCommand();
206             OracleConnection conn = new OracleConnection(connectionString);
207             object result = null;
208             try
209             {
210                 PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);
211                 result = cmd.ExecuteScalar();
212                 cmd.Parameters.Clear();
213             }
214             catch
215             {
216                 throw;
217             }
218             finally
219             {
220                 cmd.Dispose();
221                 conn.Close();
222                 conn.Dispose();
223             }
224 
225             return result;
226         }
227 
228         ///    <summary>  
229         ///    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  
230         ///    </summary>  
231         ///    <param name="trans">一个已存在的数据库事务对象</param>  
232         ///    <param name="commandType">命令类型</param>  
233         ///    <param name="commandText">Oracle存储过程名称或PL/SQL命令</param>  
234         ///    <param name="cmdParms">命令参数集合</param>  
235         ///    <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>  
236         public static object ExecuteScalar(OracleTransaction trans, CommandType cmdType, string cmdText, params OracleParameter[] cmdParms)
237         {
238             if (trans == null)
239                 throw new ArgumentNullException("当前数据库事务不存在");
240             OracleConnection conn = trans.Connection;
241             if (conn == null)
242                 throw new ArgumentException("当前事务所在的数据库连接不存在");
243 
244             OracleCommand cmd = new OracleCommand();
245             object result = null;
246 
247             try
248             {
249                 PrepareCommand(cmd, conn, trans, cmdType, cmdText, cmdParms);
250                 result = cmd.ExecuteScalar();
251                 cmd.Parameters.Clear();
252             }
253             catch
254             {
255                 throw;
256             }
257             finally
258             {
259                 trans.Dispose();
260                 cmd.Dispose();
261                 conn.Close();
262                 conn.Dispose();
263             }
264 
265             return result;
266         }
267 
268         /// <summary>  
269         /// 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  
270         /// </summary>  
271         /// <param name="conn">数据库连接对象</param>  
272         /// <param name="cmdType">Command类型</param>  
273         /// <param name="cmdText">Oracle存储过程名称或PL/SQL命令</param>  
274         /// <param name="cmdParms">命令参数集合</param>  
275         /// <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>  
276         public static object ExecuteScalar(OracleConnection conn, CommandType cmdType, string cmdText, params OracleParameter[] cmdParms)
277         {
278             if (conn == null) throw new ArgumentException("当前数据库连接不存在");
279             OracleCommand cmd = new OracleCommand();
280             object result = null;
281 
282             try
283             {
284                 PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);
285                 result = cmd.ExecuteScalar();
286                 cmd.Parameters.Clear();
287             }
288             catch
289             {
290                 throw;
291             }
292             finally
293             {
294                 cmd.Dispose();
295                 conn.Close();
296                 conn.Dispose();
297             }
298 
299             return result;
300         }
301 
302         /// <summary>  
303         /// 执行数据库命令前的准备工作  
304         /// </summary>  
305         /// <param name="cmd">Command对象</param>  
306         /// <param name="conn">数据库连接对象</param>  
307         /// <param name="trans">事务对象</param>  
308         /// <param name="cmdType">Command类型</param>  
309         /// <param name="cmdText">Oracle存储过程名称或PL/SQL命令</param>  
310         /// <param name="cmdParms">命令参数集合</param>  
311         private static void PrepareCommand(OracleCommand cmd, OracleConnection conn, OracleTransaction trans, CommandType cmdType, string cmdText, OracleParameter[] cmdParms)
312         {
313             if (conn.State != ConnectionState.Open)
314                 conn.Open();
315 
316             cmd.Connection = conn;
317             cmd.CommandText = cmdText;
318 
319             if (trans != null)
320                 cmd.Transaction = trans;
321 
322             cmd.CommandType = cmdType;
323 
324             if (cmdParms != null)
325             {
326                 foreach (OracleParameter parm in cmdParms)
327                     cmd.Parameters.Add(parm);
328             }
329         }
330 
331         /// <summary>  
332         /// 将.NET日期时间类型转化为Oracle兼容的日期时间格式字符串  
333         /// </summary>  
334         /// <param name="date">.NET日期时间类型对象</param>  
335         /// <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>  
336         public static string GetOracleDateFormat(DateTime date)
337         {
338             return "TO_DATE('" + date.ToString("yyyy-M-dd") + "','YYYY-MM-DD')";
339         }
340 
341         /// <summary>  
342         /// 将.NET日期时间类型转化为Oracle兼容的日期格式字符串  
343         /// </summary>  
344         /// <param name="date">.NET日期时间类型对象</param>  
345         /// <param name="format">Oracle日期时间类型格式化限定符</param>  
346         /// <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>  
347         public static string GetOracleDateFormat(DateTime date, string format)
348         {
349             if (format == null || format.Trim() == "") format = "YYYY-MM-DD";
350             return "TO_DATE('" + date.ToString("yyyy-M-dd") + "','" + format + "')";
351         }
352 
353         /// <summary>  
354         /// 将指定的关键字处理为模糊查询时的合法参数值  
355         /// </summary>  
356         /// <param name="source">待处理的查询关键字</param>  
357         /// <returns>过滤后的查询关键字</returns>  
358         public static string HandleLikeKey(string source)
359         {
360             if (source == null || source.Trim() == "") return null;
361 
362             source = source.Replace("[", "[]]");
363             source = source.Replace("_", "[_]");
364             source = source.Replace("%", "[%]");
365 
366             return ("%" + source + "%");
367         }
368         #endregion
369     }
370 }

View Code

写几个和Oracle交互的函数；

 1 [WebMethod(Description = "测试数据库连接,无输入参数,返回bool类型true或者false")]
 2         public bool CheckOraConnect()
 3         {
 4             return OracleHelper.CheckOracleConnect();
 5         }
 6 
 7         [WebMethod(Description = "输入日期型参数,返回string类型周别")]
 8         public string GetWeek(string sDate)
 9         {
10             try
11             {
12                 // 创建参数对象
13                 OracleParameter[] param = new OracleParameter[] { new OracleParameter(":date1", OracleDbType.Varchar2) };
14                 param[0].Value = sDate;
15                 // 返回 datatable转换成string；
16                 DataSet ds = new DataSet();
17                 ds = OracleHelper.ExecuteDataSet(OracleHelper.oraConnStr, CommandType.Text, CommonSQL.sqlGetWeek, param);
18                 if (ds.Tables.Count > 0 && ds.Tables[0].Rows.Count > 0)
19                 {
20                     return ds.Tables[0].Rows[0][0].ToString();
21                 }
22                 else
23                 {
24                     return "Not Found";
25                 }
26             }
27             catch (Exception ex)
28             {
29                 return ex.ToString();
30             }
31 
32         }

View Code

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)

1      <webServices>
2         <protocols>
3           <add name="HttpSoap"/>
4           <add name="HttpPost"/>
5           <add name="HttpGet"/>
6           <add name="Documentation"/>
7         </protocols>
8       </webServices>