发布：2015/5/31 15:28:36作者：管理员 来源：本站 浏览次数：1180
最近在项目中用到的相关Json的数据转换
List<T>转Json
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public static string Obj2Json<T>(T data)
{
try
{
System.Runtime.Serialization.Json.DataContractJsonSerializer serializer = new System.Runtime.Serialization.Json.DataContractJsonSerializer(data.GetType());
using (MemoryStream ms = new MemoryStream())
{
serializer.WriteObject(ms, data);
return Encoding.UTF8.GetString(ms.ToArray());
}
}
catch
{
return null;
}
}
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Json转List<T>
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public static Object Json2Obj(String json,Type t)
{
try
{
System.Runtime.Serialization.Json.DataContractJsonSerializer serializer = new System.Runtime.Serialization.Json.DataContractJsonSerializer(t);
using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(json)))
{
return serializer.ReadObject(ms);
}
}
catch
{
return null;
}
}
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DataTable 转Json
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public static string DataTable2Json(DataTable dt)
{
if (dt.Rows.Count == 0)
{
return "";
}
StringBuilder jsonBuilder = new StringBuilder();
// jsonBuilder.Append("{");
//jsonBuilder.Append(dt.TableName.ToString());
jsonBuilder.Append("[");//转换成多个model的形式
for (int i = 0; i < dt.Rows.Count; i++)
{
jsonBuilder.Append("{");
for (int j = 0; j < dt.Columns.Count; j++)
{
jsonBuilder.Append("\"");
jsonBuilder.Append(dt.Columns[j].ColumnName);
jsonBuilder.Append("\":\"");
jsonBuilder.Append(dt.Rows[i][j].ToString());
jsonBuilder.Append("\",");
}
jsonBuilder.Remove(jsonBuilder.Length - 1, 1);
jsonBuilder.Append("},");
}
jsonBuilder.Remove(jsonBuilder.Length - 1, 1);
jsonBuilder.Append("]");
// jsonBuilder.Append("}");
return jsonBuilder.ToString();
}
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单个对象转JSON
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public static T Json2Obj<T>(string json)
{
T obj = Activator.CreateInstance<T>();
using (System.IO.MemoryStream ms = new System.IO.MemoryStream(System.Text.Encoding.UTF8.GetBytes(json)))
{
System.Runtime.Serialization.Json.DataContractJsonSerializer serializer = new System.Runtime.Serialization.Json.DataContractJsonSerializer(obj.GetType());
return (T)serializer.ReadObject(ms);
}
}
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