整理NetonsoftJson 代码

IRaCIS.Core.API/_ServiceExtensions/NewtonsoftJson/NullToEmptyStringResolver.cs

@@ -8,27 +8,11 @@ using System.Reflection;
 
 namespace IRaCIS.Core.API
 {
+    /// <summary>
+    /// LowerCamelCaseJsonAttribute 可以设置类小写返回给前端
+    /// </summary>
     public class NullToEmptyStringResolver : DefaultContractResolver
     {
-        /// <summary>
-        /// 创建属性
-        /// </summary>
-        /// <param name="type">类型</param>
-        /// <param name="memberSerialization">序列化成员</param>
-        /// <returns></returns>
-        //protected override IList<JsonProperty> CreateProperties(Type type, MemberSerialization memberSerialization)
-        //{
-        //    IList<JsonProperty> properties = base.CreateProperties(type, memberSerialization);
-
-
-        //    foreach (var jsonProperty in properties)
-        //    {
-        //        jsonProperty.DefaultValue = new NullToEmptyStringValueProvider(jsonProperty);
-        //    }
-
-        //    return properties;
-
-        //}
 
         protected override IList<JsonProperty> CreateProperties(Type type, MemberSerialization memberSerialization)
         {
@@ -65,4 +49,37 @@ namespace IRaCIS.Core.API
 
 
     }
+    public class NullToEmptyStringValueProvider : IValueProvider
+    {
+        PropertyInfo _MemberInfo;
+        public NullToEmptyStringValueProvider(PropertyInfo memberInfo)
+        {
+            _MemberInfo = memberInfo;
+        }
+        public object GetValue(object target)
+        {
+            object result = _MemberInfo.GetValue(target);
+            if (_MemberInfo.PropertyType == typeof(string) && result == null) result = "";
+            else if (_MemberInfo.PropertyType == typeof(String[]) && result == null) result = new string[] { };
+            //else if (_MemberInfo.PropertyType == typeof(Nullable<Int32>) && result == null) result = 0;
+            //else if (_MemberInfo.PropertyType == typeof(Nullable<Decimal>) && result == null) result = 0.00M;
+
+            return result;
+        }
+        public void SetValue(object target, object value)
+        {
+
+            if (_MemberInfo.PropertyType == typeof(string))
+            {
+                //去掉前后空格
+                _MemberInfo.SetValue(target, value == null ? string.Empty : value.ToString() == string.Empty ? value : value/*.ToString().Trim()*/);
+
+            }
+            else
+            {
+                _MemberInfo.SetValue(target, value);
+            }
+
+        }
+    }
 }