目前为止用过的最好的Json互转工具类ConvertJson
浏览数：58 /
时间：2015年06月09日
1 /// <summary> 2 ///ConvertJson 的摘要说明 3 /// </summary> 4 public class ConvertJson 5 { 6 #region 私有方法 7 /// <summary> 8 /// 过滤特殊字符 9 /// </summary> 10 /// <param name="s">字符串</param> 11 /// <returns>json字符串</returns> 12 private static string String2Json(String s) 13 { 14 StringBuilder sb = new StringBuilder(); 15 for (int i = 0; i < s.Length; i++) 16 { 17 char c = s.ToCharArray()[i]; 18 switch (c) 19 { 20 case ‘\"‘: 21 sb.Append("\\\""); break; 22 case ‘\\‘: 23 sb.Append("\\\\"); break; 24 case ‘/‘: 25 sb.Append("\\/"); break; 26 case ‘\b‘: 27 sb.Append("\\b"); break; 28 case ‘\f‘: 29 sb.Append("\\f"); break; 30 case ‘\n‘: 31 sb.Append("\\n"); break; 32 case ‘\r‘: 33 sb.Append("\\r"); break; 34 case ‘\t‘: 35 sb.Append("\\t"); break; 36 default: 37 sb.Append(c); break; 38 } 39 } 40 return sb.ToString(); 41 } 42 /// <summary> 43 /// 格式化字符型、日期型、布尔型 44 /// </summary> 45 /// <param name="str"></param> 46 /// <param name="type"></param> 47 /// <returns></returns> 48 private static string StringFormat(string str, Type type) 49 { 50 if (type == typeof(string)) 51 { 52 str = String2Json(str); 53 str = "\"" + str + "\""; 54 } 55 else if (type == typeof(DateTime)) 56 { 57 str = "\"" + str + "\""; 58 } 59 else if (type == typeof(bool)) 60 { 61 if (str != "") 62 { 63 str = str.ToLower(); 64 } 65 else 66 { 67 str = "\"" + str + "\""; 68 } 69 } 70 else if (type != typeof(string) && string.IsNullOrEmpty(str)) 71 { 72 str = "\"" + str + "\""; 73 } 74 return str; 75 } 76 77 #endregion 78 79 #region list转换成JSON 80 /// <summary> 81 /// list转换为Json 82 /// </summary> 83 /// <typeparam name="T"></typeparam> 84 /// <param name="list"></param> 85 /// <returns></returns> 86 public static string ListToJson<T>(IList<T> list) 87 { 88 object obj = list[0]; 89 return ListToJson<T>(list, obj.GetType().Name); 90 } 91 /// <summary> 92 /// list转换为json 93 /// </summary> 94 /// <typeparam name="T1"></typeparam> 95 /// <param name="list"></param> 96 /// <param name="p"></param> 97 /// <returns></returns> 98 private static string ListToJson<T>(IList<T> list, string JsonName) 99 { 100 StringBuilder Json = new StringBuilder(); 101 if (string.IsNullOrEmpty(JsonName)) 102 JsonName = list[0].GetType().Name; 103 Json.Append("{\"" + JsonName + "\":["); 104 if (list.Count > 0) 105 { 106 for (int i = 0; i < list.Count; i++) 107 { 108 T obj = Activator.CreateInstance<T>(); 109 PropertyInfo[] pi = obj.GetType().GetProperties(); 110 Json.Append("{"); 111 for (int j = 0; j < pi.Length; j++) 112 { 113 Type type = pi[j].GetValue(list[i], null).GetType(); 114 Json.Append("\"" + pi[j].Name.ToString() + "\":" + StringFormat(pi[j].GetValue(list[i], null).ToString(), type)); 115 if (j < pi.Length - 1) 116 { 117 Json.Append(","); 118 } 119 } 120 Json.Append("}"); 121 if (i < list.Count - 1) 122 { 123 Json.Append(","); 124 } 125 } 126 } 127 Json.Append("]}"); 128 return Json.ToString(); 129 } 130 #endregion 131 132 #region 对象转换为Json 133 /// <summary> 134 /// 对象转换为json 135 /// </summary> 136 /// <param name="jsonObject">json对象</param> 137 /// <returns>json字符串</returns> 138 public static string ToJson(object jsonObject) 139 { 140 string jsonString = "{"; 141 PropertyInfo[] propertyInfo = jsonObject.GetType().GetProperties(); 142 for (int i = 0; i < propertyInfo.Length; i++) 143 { 144 object objectValue = propertyInfo[i].GetGetMethod().Invoke(jsonObject, null); 145 string value = string.Empty; 146 if (objectValue is DateTime || objectValue is Guid || objectValue is TimeSpan) 147 { 148 value = "‘" + objectValue.ToString() + "‘"; 149 } 150 else if (objectValue is string) 151 { 152 value = "‘" + ToJson(objectValue.ToString()) + "‘"; 153 } 154 else if (objectValue is IEnumerable) 155 { 156 value = ToJson((IEnumerable)objectValue); 157 } 158 else 159 { 160 value = ToJson(objectValue.ToString()); 161 } 162 jsonString += "\"" + ToJson(propertyInfo[i].Name) + "\":" + value + ","; 163 } 164 jsonString.Remove(jsonString.Length - 1, jsonString.Length); 165 return jsonString + "}"; 166 } 167 168 #endregion 169 170 #region 对象集合转换为json 171 /// <summary> 172 /// 对象集合转换为json 173 /// </summary> 174 /// <param name="array">对象集合</param> 175 /// <returns>json字符串</returns> 176 public static string ToJson(IEnumerable array) 177 { 178 string jsonString = "{"; 179 foreach (object item in array) 180 { 181 jsonString += ToJson(item) + ","; 182 } 183 jsonString.Remove(jsonString.Length - 1, jsonString.Length); 184 return jsonString + "]"; 185 } 186 #endregion 187 188 #region 普通集合转换Json 189 /// <summary> 190 /// 普通集合转换Json 191 /// </summary> 192 /// <param name="array">集合对象</param> 193 /// <returns>Json字符串</returns> 194 public static string ToArrayString(IEnumerable array) 195 { 196 string jsonString = "["; 197 foreach (object item in array) 198 { 199 jsonString = ToJson(item.ToString()) + ","; 200 } 201 jsonString.Remove(jsonString.Length - 1, jsonString.Length); 202 return jsonString + "]"; 203 } 204 #endregion 205 206 #region DataSet转换为Json 207 /// <summary> 208 /// DataSet转换为Json 209 /// </summary> 210 /// <param name="dataSet">DataSet对象</param> 211 /// <returns>Json字符串</returns> 212 public static string ToJson(DataSet dataSet) 213 { 214 string jsonString = "{"; 215 foreach (DataTable table in dataSet.Tables) 216 { 217 jsonString += "\"" + table.TableName + "\":" + ToJson(table) + ","; 218 } 219 jsonString = jsonString.TrimEnd(‘,‘); 220 return jsonString + "}"; 221 } 222 #endregion 223 224 #region Datatable转换为Json 225 /// <summary> 226 /// Datatable转换为Json 227 /// </summary> 228 /// <param name="table">Datatable对象</param> 229 /// <returns>Json字符串</returns> 230 public static string ToJson(DataTable dt) 231 { 232 StringBuilder jsonString = new StringBuilder(); 233 jsonString.Append("["); 234 DataRowCollection drc = dt.Rows; 235 for (int i = 0; i < drc.Count; i++) 236 { 237 jsonString.Append("{"); 238 for (int j = 0; j < dt.Columns.Count; j++) 239 { 240 string strKey = dt.Columns[j].ColumnName; 241 string strValue = drc[i][j].ToString(); 242 Type type = dt.Columns[j].DataType; 243 jsonString.Append("\"" + strKey + "\":"); 244 strValue = StringFormat(strValue, type); 245 if (j < dt.Columns.Count - 1) 246 { 247 jsonString.Append(strValue + ","); 248 } 249 else 250 { 251 jsonString.Append(strValue); 252 } 253 } 254 jsonString.Append("},"); 255 } 256 jsonString.Remove(jsonString.Length - 1, 1); 257 jsonString.Append("]"); 258 return jsonString.ToString(); 259 } 260 /// <summary> 261 /// DataTable转换为Json 262 /// </summary> 263 public static string ToJson(DataTable dt, string jsonName) 264 { 265 StringBuilder Json = new StringBuilder(); 266 if (string.IsNullOrEmpty(jsonName)) 267 jsonName = dt.TableName; 268 Json.Append("{\"" + jsonName + "\":["); 269 if (dt.Rows.Count > 0) 270 { 271 for (int i = 0; i < dt.Rows.Count; i++) 272 { 273 Json.Append("{"); 274 for (int j = 0; j < dt.Columns.Count; j++) 275 { 276 Type type = dt.Rows[i][j].GetType(); 277 Json.Append("\"" + dt.Columns[j].ColumnName.ToString() + "\":" + StringFormat(dt.Rows[i][j].ToString(), type)); 278 if (j < dt.Columns.Count - 1) 279 { 280 Json.Append(","); 281 } 282 } 283 Json.Append("}"); 284 if (i < dt.Rows.Count - 1) 285 { 286 Json.Append(","); 287 } 288 } 289 } 290 Json.Append("]}"); 291 return Json.ToString(); 292 } 293 294 #endregion 295 296 #region DataReader转换为Json 297 /// <summary> 298 /// DataReader转换为Json 299 /// </summary> 300 /// <param name="dataReader">DataReader对象</param> 301 /// <returns>Json字符串</returns> 302 public static string ToJson(DbDataReader dataReader) 303 { 304 StringBuilder jsonString = new StringBuilder(); 305 jsonString.Append("["); 306 while (dataReader.Read()) 307 { 308 jsonString.Append("{"); 309 for (int i = 0; i < dataReader.FieldCount; i++) 310 { 311 Type type = dataReader.GetFieldType(i); 312 string strKey = dataReader.GetName(i); 313 string strValue = dataReader[i].ToString(); 314 jsonString.Append("\"" + strKey + "\":"); 315 strValue = StringFormat(strValue, type); 316 if (i < dataReader.FieldCount - 1) 317 { 318 jsonString.Append(strValue + ","); 319 } 320 else 321 { 322 jsonString.Append(strValue); 323 } 324 } 325 jsonString.Append("},"); 326 } 327 dataReader.Close(); 328 jsonString.Remove(jsonString.Length - 1, 1); 329 jsonString.Append("]"); 330 return jsonString.ToString(); 331 } 332 #endregion 333 }
郑重声明：本站内容如果来自互联网及其他传播媒体，其版权均属原媒体及文章作者所有。转载目的在于传递更多信息及用于网络分享，并不代表本站赞同其观点和对其真实性负责，也不构成任何其他建议。
