C#對XML、JSON等格式的解析-創(chuàng)新互聯(lián)
C#對XML、JSON等格式的解析
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1、用XMLDocument來解析
XmlDocument xmlDocument = new XmlDocument();
xmlDocument.Load("test.xml");
//創(chuàng)建新節(jié)點
XmlElement nn = xmlDocument.CreateElement("p_w_picpath");
nn.SetAttribute("p_w_picpathUrl", "6.jpg");
XmlNode node = xmlDocument.SelectSingleNode("content/section/page/gall/folder");//定位到folder節(jié)點
node.AppendChild(nn);//附加新節(jié)點
//保存
xmlDocument.Save("test.xml");2、用Linq to XML來解析
可以通過遍歷，來獲得你想要的節(jié)點的內(nèi)容或?qū)傩?/p>
XElement root = XElement.Load("test.xml");
foreach (XAttribute att in root.Attributes())
{
root.Add(new XElement(att.Name, (string)att));
}
Console.WriteLine(root);3、附一個詳細(xì)點的例子
比如要解析如下的xml文件，將其轉(zhuǎn)化為Ilist對象。
20130821133126 60 30 0.4 20130821014316 120 60 0.3 20130822043127 30 0 0.5 20130822043341 120以上！ 120 0.2
在控制臺應(yīng)用程序中輸入如下代碼即可。
class Program
{
static void Main(string[] args)
{
IList resultList = new List();
XmlDocument xmlDocument = new XmlDocument();
xmlDocument.Load("test.xml");
XmlNodeList xmlNodeList = xmlDocument.SelectSingleNode("Car").ChildNodes;
foreach (XmlNode list in xmlNodeList)
{
CarCost carcost = new CarCost
(
list.SelectSingleNode("ID").InnerText,
list.SelectSingleNode("uptime").InnerText,
list.SelectSingleNode("downtime").InnerText,
float.Parse(list.SelectSingleNode("price").InnerText)
);
resultList.Add(carcost);
}
IEnumerator enumerator = resultList.GetEnumerator();
while (enumerator.MoveNext())
{
CarCost carCost = enumerator.Current as CarCost;
Console.WriteLine(carCost.ID + " " + carCost.UpTime + " " + carCost.DownTime + " " + carCost.Price);
}
}
}
public class CarCost
{
public CarCost(string id, string uptime, string downtime, float price)
{
this.ID = id;
this.UpTime = uptime;
this.DownTime = downtime;
this.Price = price;
}
public string ID { get; set; }
public string UpTime { get; set; }
public string DownTime { get; set; }
public float Price { get; set; }
} 二、C#對JSON格式數(shù)據(jù)的解析
引用Newtonsoft.Json.dll文件，來解析。
比如：有個要解析的JSON字符串
[{"TaskRoleSpaces":"","TaskRoles":"","ProxyUserID":"5d9ad5dc1c5e494db1d1b4d8d79b60a7","UserID":"5d9ad5dc1c5e494db1d1b4d8d79b60a7","UserName":"姓名","UserSystemName":"2234","OperationName":"送合同負(fù)責(zé)人","OperationValue":"同意","OperationValueText":"","SignDate":"2013-06-19 10:31:26","Comment":"同意","FormDataHashCode":"","SignatureDivID":""},{"TaskRoleSpaces":"","TaskRoles":"","ProxyUserID":"2c96c3943826ea93013826eafe6d0089","UserID":"2c96c3943826ea93013826eafe6d0089","UserName":"姓名2","UserSystemName":"1234","OperationName":"送合同負(fù)責(zé)人","OperationValue":"同意","OperationValueText":"","SignDate":"2013-06-20 09:37:11","Comment":"同意","FormDataHashCode":"","SignatureDivID":""}]
首先定義個實體類：
public class JobInfo
{
public string TaskRoleSpaces { get; set; }
public string TaskRoles { get; set; }
public string ProxyUserID { get; set; }
public string UserID { get; set; }
public string UserName { get; set; }
public string UserSystemName { get; set; }
public string OperationName { get; set; }
public string OperationValue { get; set; }
public string OperationValueText { get; set; }
public DateTime SignDate { get; set; }
public string Comment { get; set; }
public string FormDataHashCode { get; set; }
public string SignatureDivID { get; set; }
}然后在控制臺Main函數(shù)內(nèi)部輸入如下代碼：
string json = @"[{'TaskRoleSpaces':'','TaskRoles':'','ProxyUserID':'5d9ad5dc1c5e494db1d1b4d8d79b60a7','UserID':'5d9ad5dc1c5e494db1d1b4d8d79b60a7','UserName':'姓名','UserSystemName':'2234','OperationName':'送合同負(fù)責(zé)人','OperationValue':'同意','OperationValueText':'','SignDate':'2013-06-19 10:31:26','Comment':'同意','FormDataHashCode':'','SignatureDivID':''},{'TaskRoleSpaces':'','TaskRoles':'','ProxyUserID':'2c96c3943826ea93013826eafe6d0089','UserID':'2c96c3943826ea93013826eafe6d0089','UserName':'姓名2','UserSystemName':'1234','OperationName':'送合同負(fù)責(zé)人','OperationValue':'同意','OperationValueText':'','SignDate':'2013-06-20 09:37:11','Comment':'同意','FormDataHashCode':'','SignatureDivID':''}]
";
List jobInfoList = JsonConvert.DeserializeObject>(json);
foreach (JobInfo jobInfo in jobInfoList)
{
Console.WriteLine("UserName:" + jobInfo.UserName + "UserID:" + jobInfo.UserID);
} 這樣就可以正常輸出內(nèi)容了。
我想肯定有人會問，如果有多層關(guān)系的json字符串該如何處理呢？沒關(guān)系，一樣的處理。
比如如何解析這個json字符串：[{'phantom':true,'id':'20130717001','data':{'MID':1019,'Name':'aaccccc','Des':'cc','Disable':'啟用','Remark':'cccc'}}] ？
首先還是定義實體類：
public class Info
{
public string phantom { get; set; }
public string id { get; set; }
public data data { get; set; }
}
public class data
{
public int MID { get; set; }
public string Name { get; set; }
public string Des { get; set; }
public string Disable { get; set; }
public string Remark { get; set; }
}然后在main方法里面，鍵入：
string json = @"[{'phantom':true,'id':'20130717001','data':{'MID':1019,'Name':'aaccccc','Des':'cc','Disable':'啟用','Remark':'cccc'}}]";
List infoList = JsonConvert.DeserializeObject>(json);
foreach (Info info in infoList)
{
Console.WriteLine("id:" + info.data.MID);
} 按照我們的預(yù)期，應(yīng)該能夠得到1019的結(jié)果。
截圖為證：
另外，對于有些json格式不是標(biāo)準(zhǔn)的，可以使用通用的方法進(jìn)行解析。
string jsonText = @" {'Count':1543,'Items':[{'UnitID':6119,'UnitName':'C'}]}";
JsonReader reader = new JsonTextReader(new StringReader(jsonText));
while (reader.Read())
{
Console.WriteLine(reader.TokenType + "\t\t" + reader.ValueType + "\t\t" + reader.Value);
}附Newtonsoft.Json.dll下載地址：下載吧
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