swagger添加参数描述

src/TouchSocket.Rpc/Common/RpcParameter.cs

@@ -11,6 +11,7 @@
 //------------------------------------------------------------------------------
 
 using System;
+using System.ComponentModel;
 using System.Reflection;
 using TouchSocket.Core;
 
@@ -37,6 +38,11 @@ public class RpcParameter
     /// </summary>
     public ParameterInfo ParameterInfo { get; }
 
+    /// <summary>
+    /// 参数描述
+    /// </summary>
+    public string ParameterDesc => this.ParameterInfo.GetCustomAttribute<DescriptionAttribute>()?.Description;
+    
     /// <summary>
     /// 参数名称
     /// </summary>

src/TouchSocket.WebApi.Swagger/Common/OpenApiParameter.cs

@@ -21,6 +21,9 @@ internal class OpenApiParameter
 
     [JsonProperty("in")]
     public string In { get; set; }
+    
+    [JsonProperty("description")]
+    public string Description { get; set; }
 
     [JsonProperty("schema")]
     public OpenApiSchema Schema { get; set; }

src/TouchSocket.WebApi.Swagger/Plugins/SwaggerPlugin.cs

@@ -313,6 +313,7 @@ public sealed class SwaggerPlugin : PluginBase, IServerStartedPlugin, IHttpPlugi
                 {
                     var openApiParameter = this.GetParameter(parameter.ParameterInfo);
                     openApiParameter.In = "query";
+                    openApiParameter.Description = parameter.ParameterDesc;
                     this.AddSchemaType(parameter.Type, schemaTypeList);
                     openApiParameters.Add(openApiParameter);
                 }