using System; using System.Collections.Generic; using System.Text; using System.Data; using System.Reflection; using System.Collections; using System.Data.Common; namespace DotNet.Utilities { ConvertJson { #region 私有方法 过滤特殊字符 String2Json(String s) { StringBuilder sb = new StringBuilder(); for (int i = 0; i < s.Length; i++) { char c = s.ToCharArray()[i]; switch (c) { : sb.Append(); break; : sb.Append(); break; : sb.Append(); break; : sb.Append(); break; : sb.Append(); break; : sb.Append(); break; : sb.Append(); break; : sb.Append(); break; default: sb.Append(c); break; } } return sb.ToString(); } 格式化字符型、日期型、布尔型 StringFormat(string str, Type type) { if (type == typeof(string)) { str = String2Json(str); str = + str + ; } elseif (type == typeof(DateTime)) { str = + str + ; } elseif (type == typeof(bool)) { str = str.ToLower(); } elseif (type != typeof(string) && string.IsNullOrEmpty(str)) { str = + str + ; } return str; } #endregion#region List转换成Json List转换成Json ListToJson<T>(IList<T> list) { object obj = list[0]; return ListToJson<T>(list, obj.GetType().Name); } List转换成Json 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 对象转换为Json ToJson(object jsonObject) { ; 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() + ; } ) { value = + ToJson(objectValue.ToString()) + ; } elseif (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); ; } #endregion#region 对象集合转换Json 对象集合转换Json ToJson(IEnumerable array) { ; foreach (object item in array) { jsonString += ToJson(item) + ; } jsonString.Remove(jsonString.Length - 1, jsonString.Length); ; } #endregion#region 普通集合转换Json 普通集合转换Json ToArrayString(IEnumerable array) { ; foreach (object item in array) { jsonString = ToJson(item.ToString()) + ; } jsonString.Remove(jsonString.Length - 1, jsonString.Length); ; } #endregion#region DataSet转换为Json DataSet转换为Json ToJson(DataSet dataSet) { ; foreach (DataTable table in dataSet.Tables) { jsonString += + table.TableName + + ToJson(table) + ; } jsonString = jsonString.TrimEnd(); ; } #endregion#region Datatable转换为Json Datatable转换为Json 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 - 1, 1); jsonString.Append(); return jsonString.ToString(); } DataTable转换为Json 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 DataReader转换为Json 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 - 1, 1); jsonString.Append(); return jsonString.ToString(); } #endregion } }