remove publish `string content` api of ICapPublisher.

Publish<T> will support it.

src/DotNetCore.CAP.MySql/CapPublisher.cs

@@ -38,25 +38,11 @@ namespace DotNetCore.CAP.MySql
             }
         }
 
-        public void Publish(string name, string content)
-        {
-            CheckIsUsingEF(name);
-
-            PublishCore(name, content);
-        }
-
-        public Task PublishAsync(string name, string content)
-        {
-            CheckIsUsingEF(name);
-
-            return PublishCoreAsync(name, content);
-        }
-
         public void Publish<T>(string name, T contentObj)
         {
             CheckIsUsingEF(name);
 
-            var content = Helper.ToJson(contentObj);
+            var content = Serialize(contentObj);
 
             PublishCore(name, content);
         }
@@ -65,36 +51,18 @@ namespace DotNetCore.CAP.MySql
         {
             CheckIsUsingEF(name);
 
-            var content = Helper.ToJson(contentObj);
+            var content = Serialize(contentObj);
 
             return PublishCoreAsync(name, content);
         }
 
-        public void Publish(string name, string content, IDbConnection dbConnection, IDbTransaction dbTransaction = null)
-        {
-            CheckIsAdoNet(name);
-
-            PrepareConnection(dbConnection, ref dbTransaction);
-
-            PublishWithTrans(name, content, dbConnection, dbTransaction);
-        }
-
-        public Task PublishAsync(string name, string content, IDbConnection dbConnection, IDbTransaction dbTransaction = null)
-        {
-            CheckIsAdoNet(name);
-
-            PrepareConnection(dbConnection, ref dbTransaction);
-
-            return PublishWithTransAsync(name, content, dbConnection, dbTransaction);
-        }
-
         public void Publish<T>(string name, T contentObj, IDbConnection dbConnection, IDbTransaction dbTransaction = null)
         {
             CheckIsAdoNet(name);
 
             PrepareConnection(dbConnection, ref dbTransaction);
 
-            var content = Helper.ToJson(contentObj);
+            var content = Serialize(contentObj);
 
             PublishWithTrans(name, content, dbConnection, dbTransaction);
         }
@@ -105,13 +73,27 @@ namespace DotNetCore.CAP.MySql
 
             PrepareConnection(dbConnection, ref dbTransaction);
 
-            var content = Helper.ToJson(contentObj);
+            var content = Serialize(contentObj);
 
             return PublishWithTransAsync(name, content, dbConnection, dbTransaction);
         }
 
         #region private methods
 
+        private string Serialize<T>(T obj)
+        {
+            string content = string.Empty;
+            if (Helper.IsComplexType(typeof(T)))
+            {
+                content = Helper.ToJson(obj);
+            }
+            else
+            {
+                content = obj?.ToString();
+            }
+            return content;
+        }
+
         private void PrepareConnection(IDbConnection dbConnection, ref IDbTransaction dbTransaction)
         {
             if (dbConnection == null)

src/DotNetCore.CAP.SqlServer/CapPublisher.cs

@@ -38,25 +38,11 @@ namespace DotNetCore.CAP.SqlServer
             }
         }
 
-        public void Publish(string name, string content)
-        {
-            CheckIsUsingEF(name);
-
-            PublishCore(name, content);
-        }
-
-        public Task PublishAsync(string name, string content)
-        {
-            CheckIsUsingEF(name);
-
-            return PublishCoreAsync(name, content);
-        }
-
         public void Publish<T>(string name, T contentObj)
         {
             CheckIsUsingEF(name);
 
-            var content = Helper.ToJson(contentObj);
+            var content = Serialize(contentObj);
 
             PublishCore(name, content);
         }
@@ -65,33 +51,17 @@ namespace DotNetCore.CAP.SqlServer
         {
             CheckIsUsingEF(name);
 
-            var content = Helper.ToJson(contentObj);
+            var content = Serialize(contentObj);
 
             return PublishCoreAsync(name, content);
         }
-
-        public void Publish(string name, string content, IDbConnection dbConnection, IDbTransaction dbTransaction = null)
-        {
-            CheckIsAdoNet(name);
-            PrepareConnection(dbConnection, ref dbTransaction);
-
-            PublishWithTrans(name, content, dbConnection, dbTransaction);
-        }
-
-        public Task PublishAsync(string name, string content, IDbConnection dbConnection, IDbTransaction dbTransaction = null)
-        {
-            CheckIsAdoNet(name);
-            PrepareConnection(dbConnection, ref dbTransaction);
-
-            return PublishWithTransAsync(name, content, dbConnection, dbTransaction);
-        }
-
+ 
         public void Publish<T>(string name, T contentObj, IDbConnection dbConnection, IDbTransaction dbTransaction = null)
         {
             CheckIsAdoNet(name);
             PrepareConnection(dbConnection, ref dbTransaction);
 
-            var content = Helper.ToJson(contentObj);
+            var content = Serialize(contentObj);
 
             PublishWithTrans(name, content, dbConnection, dbTransaction);
         }
@@ -101,13 +71,27 @@ namespace DotNetCore.CAP.SqlServer
             CheckIsAdoNet(name);
             PrepareConnection(dbConnection, ref dbTransaction);
 
-            var content = Helper.ToJson(contentObj);
+            var content = Serialize(contentObj);
 
             return PublishWithTransAsync(name, content, dbConnection, dbTransaction);
         }
 
         #region private methods
 
+        private string Serialize<T>(T obj)
+        {
+            string content = string.Empty;
+            if (Helper.IsComplexType(typeof(T)))
+            {
+                content = Helper.ToJson(obj);
+            }
+            else
+            {
+                content = obj.ToString();
+            }
+            return content;
+        }
+
         private void PrepareConnection(IDbConnection dbConnection, ref IDbTransaction dbTransaction)
         {
             if (dbConnection == null)

src/DotNetCore.CAP/ICapPublisher.cs

@@ -8,28 +8,6 @@ namespace DotNetCore.CAP
     /// </summary>
     public interface ICapPublisher
     {
-        /// <summary>
-        /// (EntityFramework) Asynchronous publish a message.
-        /// <para>
-        ///  If you are using the EntityFramework, you need to configure the DbContextType first.
-        ///  otherwise you need to use overloaded method with IDbConnection and IDbTransaction.
-        /// </para>
-        /// </summary>
-        /// <param name="name">the topic name or exchange router key.</param>
-        /// <param name="content">message body content.</param>
-        Task PublishAsync(string name, string content);
-
-        /// <summary>
-        /// (EntityFramework) Publish a message.
-        /// <para>
-        ///  If you are using the EntityFramework, you need to configure the DbContextType first.
-        ///  otherwise you need to use overloaded method with IDbConnection and IDbTransaction.
-        /// </para>
-        /// </summary>
-        /// <param name="name">the topic name or exchange router key.</param>
-        /// <param name="content">message body content.</param>
-        void Publish(string name, string content);
-
         /// <summary>
         /// (EntityFramework) Asynchronous publish a object message.
         /// <para>
@@ -54,24 +32,6 @@ namespace DotNetCore.CAP
         /// <param name="contentObj">message body content, that will be serialized of json.</param>
         void Publish<T>(string name, T contentObj);
 
-        /// <summary>
-        /// (ado.net) Asynchronous publish a message.
-        /// </summary>
-        /// <param name="name">the topic name or exchange router key.</param>
-        /// <param name="content">message body content</param>
-        /// <param name="dbConnection">the connection of <see cref="IDbConnection"/></param>
-        /// <param name="dbTransaction">the transaction of <see cref="IDbTransaction"/></param>
-        Task PublishAsync(string name, string content, IDbConnection dbConnection, IDbTransaction dbTransaction = null);
-
-        /// <summary>
-        /// (ado.net) Publish a message.
-        /// </summary>
-        /// <param name="name">the topic name or exchange router key.</param>
-        /// <param name="content">message body content.</param>
-        /// <param name="dbConnection">the connection of <see cref="IDbConnection"/></param>
-        /// <param name="dbTransaction">the transaction of <see cref="IDbTransaction"/></param>
-        void Publish(string name, string content, IDbConnection dbConnection, IDbTransaction dbTransaction = null);
-
         /// <summary>
         /// (ado.net) Asynchronous publish a object message.
         /// </summary>