各种类型的Json格式化

各种类型的Json格式化,第1张

各种类型的Json格式化

using System;

using System.Collections.Generic; using System.Text; using System.Data; using System.Reflection; using System.Collections; using System.Data.Common;   public class ConvertJson {     #region 私有方法     /// <summary>     /// 过滤特殊字符     /// </summary>     private static string String2Json(String s)     {         StringBuilder sb = new StringBuilder();         for (int i = 0; i < s.Length; i++)         {             char c = s.ToCharArray()[i];             switch (c)             {                 case '\"':                     sb.Append("\\""); break;                 case '\':                     sb.Append("\\"); break;                 case '/':                     sb.Append("\/"); break;                 case '\b':                     sb.Append("\b"); break;                 case '\f':                     sb.Append("\f"); break;                 case '\n':                     sb.Append("\n"); break;                 case '\r':                     sb.Append("\r"); break;                 case '\t':                     sb.Append("\t"); break;                 default:                     sb.Append(c); break;             }         }         return sb.ToString();     }       /// <summary>     /// 格式化字符型、日期型、布尔型     /// </summary>     private static string StringFormat(string str, Type type)     {         if (type == typeof(string))         {             str = String2Json(str);             str = "\"" + str + "\"";         }         else if (type == typeof(DateTime))         {             str = "\"" + str + "\"";         }         else if (type == typeof(bool))         {             str = str.ToLower();         }         else if (type != typeof(string) && string.IsNullOrEmpty(str))         {             str = "\"" + str + "\"";         }         return str;     }     #endregion       #region List转换成Json     /// <summary>     /// List转换成Json     /// </summary>     public static string ListToJson<T>(IList<T> list)     {         object obj = list[0];         return ListToJson<T>(list, obj.GetType().Name);     }       /// <summary>     /// List转换成Json     /// </summary>     public static string ListToJson<T>(IList<T> list, string jsonName)     {         StringBuilder Json = new StringBuilder();         if (string.IsNullOrEmpty(jsonName)) jsonName = list[0].GetType().Name;         Json.Append("{\"" + jsonName + "\":[");         if (list.Count > 0)         {             for (int i = 0; i < list.Count; i++)             {                 T obj = Activator.CreateInstance<T>();                 PropertyInfo[] pi = obj.GetType().GetProperties();                 Json.Append("{");                 for (int j = 0; j < pi.Length; j++)                 {                     Type type = pi[j].GetValue(list[i], null).GetType();                     Json.Append("\"" + pi[j].Name.ToString() + "\":" + StringFormat(pi[j].GetValue(list[i], null).ToString(), type));                       if (j < pi.Length - 1)                     {                         Json.Append(",");                     }                 }                 Json.Append("}");                 if (i < list.Count - 1)                 {                     Json.Append(",");                 }             }         }         Json.Append("]}");         return Json.ToString();     }     #endregion       #region 对象转换为Json     /// <summary>     /// 对象转换为Json     /// </summary>     /// <param name="jsonObject">对象</param>     /// <returns>Json字符串</returns>     public static string ToJson(object jsonObject)     {         string jsonString = "{";         PropertyInfo[] propertyInfo = jsonObject.GetType().GetProperties();         for (int i = 0; i < propertyInfo.Length; i++)         {             object objectValue = propertyInfo[i].GetGetMethod().Invoke(jsonObject, null);             string value = string.Empty;             if (objectValue is DateTime || objectValue is Guid || objectValue is TimeSpan)             {                 value = "'" + objectValue.ToString() + "'";             }             else if (objectValue is string)             {                 value = "'" + ToJson(objectValue.ToString()) + "'";             }             else if (objectValue is IEnumerable)             {                 value = ToJson((IEnumerable)objectValue);             }             else             {                 value = ToJson(objectValue.ToString());             }             jsonString += "\"" + ToJson(propertyInfo[i].Name) + "\":" + value + ",";         }         jsonString.Remove(jsonString.Length - 1, jsonString.Length);         return jsonString + "}";     }     #endregion       #region 对象集合转换Json     /// <summary>     /// 对象集合转换Json     /// </summary>     /// <param name="array">集合对象</param>     /// <returns>Json字符串</returns>     public static string ToJson(IEnumerable array)     {         string jsonString = "[";         foreach (object item in array)         {             jsonString += ToJson(item) + ",";         }         jsonString.Remove(jsonString.Length - 1, jsonString.Length);         return jsonString + "]";     }     #endregion       #region 普通集合转换Json     /// <summary>     /// 普通集合转换Json     /// </summary>     /// <param name="array">集合对象</param>     /// <returns>Json字符串</returns>     public static string ToArrayString(IEnumerable array)     {         string jsonString = "[";         foreach (object item in array)         {             jsonString = ToJson(item.ToString()) + ",";         }         jsonString.Remove(jsonString.Length - 1, jsonString.Length);         return jsonString + "]";     }     #endregion       #region  DataSet转换为Json     /// <summary>     /// DataSet转换为Json     /// </summary>     /// <param name="dataSet">DataSet对象</param>     /// <returns>Json字符串</returns>     public static string ToJson(DataSet dataSet)     {         string jsonString = "{";         foreach (DataTable table in dataSet.Tables)         {             jsonString += "\"" + table.TableName + "\":" + ToJson(table) + ",";         }         jsonString = jsonString.TrimEnd(',');         return jsonString + "}";     }     #endregion       #region Datatable转换为Json     /// <summary>     /// Datatable转换为Json     /// </summary>     /// <param name="table">Datatable对象</param>     /// <returns>Json字符串</returns>     public static string ToJson(DataTable dt)     {         StringBuilder jsonString = new StringBuilder();         jsonString.Append("[");         DataRowCollection drc = dt.Rows;         for (int i = 0; i < drc.Count; i++)         {             jsonString.Append("{");             for (int j = 0; j < dt.Columns.Count; j++)             {                 string strKey = dt.Columns[j].ColumnName;                 string strValue = drc[i][j].ToString();                 Type type = dt.Columns[j].DataType;                 jsonString.Append("\"" + strKey + "\":");                 strValue = StringFormat(strValue, type);                 if (j < dt.Columns.Count - 1)                 {                     jsonString.Append(strValue + ",");                 }                 else                 {                     jsonString.Append(strValue);                 }             }             jsonString.Append("},");         }         jsonString.Remove(jsonString.Length - 11);         jsonString.Append("]");         return jsonString.ToString();     }       /// <summary>     /// DataTable转换为Json     /// </summary>     public static string ToJson(DataTable dt, string jsonName)     {         StringBuilder Json = new StringBuilder();         if (string.IsNullOrEmpty(jsonName)) jsonName = dt.TableName;         Json.Append("{\"" + jsonName + "\":[");         if (dt.Rows.Count > 0)         {             for (int i = 0; i < dt.Rows.Count; i++)             {                 Json.Append("{");                 for (int j = 0; j < dt.Columns.Count; j++)                 {                     Type type = dt.Rows[i][j].GetType();                     Json.Append("\"" + dt.Columns[j].ColumnName.ToString() + "\":" + StringFormat(dt.Rows[i][j].ToString(), type));                     if (j < dt.Columns.Count - 1)                     {                         Json.Append(",");                     }                 }                 Json.Append("}");                 if (i < dt.Rows.Count - 1)                 {                     Json.Append(",");                 }             }         }         Json.Append("]}");         return Json.ToString();     }     #endregion       #region DataReader转换为Json     /// <summary>     /// DataReader转换为Json     /// </summary>     /// <param name="dataReader">DataReader对象</param>     /// <returns>Json字符串</returns>     public static string ToJson(DbDataReader dataReader)     {         StringBuilder jsonString = new StringBuilder();         jsonString.Append("[");         while (dataReader.Read())         {             jsonString.Append("{");             for (int i = 0; i < dataReader.FieldCount; i++)             {                 Type type = dataReader.GetFieldType(i);                 string strKey = dataReader.GetName(i);                 string strValue = dataReader[i].ToString();                 jsonString.Append("\"" + strKey + "\":");                 strValue = StringFormat(strValue, type);                 if (i < dataReader.FieldCount - 1)                 {                     jsonString.Append(strValue + ",");                 }                 else                 {                     jsonString.Append(strValue);                 }             }             jsonString.Append("},");         }         dataReader.Close();         jsonString.Remove(jsonString.Length - 11);         jsonString.Append("]");         return jsonString.ToString();     }     #endregion }

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