1.分析EasyUI TreeGrid的数据格式，demo的格式是这样的：http://www.jeasyui.net/demo/treegrid_data1.json
分析之后，得到基本的JSON格式：
[
{
"id": 1,
"name": "name1",
"value": "",
"children": [
{
"id": 2,
"name": "name2",
"value": "value2"
},
{
"id": 3,
"name": "name3",
"value": "",
"children": [
{
"id": 111,
"name": "name4",
"value": "value4"
}
]
}
]
}
]
2.XML解析成JSON格式
截取其中一小部分XML的格式：
<?xml version="1.0" encoding="gb2312"?>
<Metadata>
<mdTitle>安庆幅</mdTitle>
<mdDataSt>2006-01-04</mdDataSt>
<mdChar>029</mdChar>
<mdStanName>地质信息元数据标准</mdStanName>
<mdStanVer>2005版</mdStanVer>
<mdLang>中文</mdLang>
<dataIdInfo>
<dataChar>029</dataChar>
<idAbs> 1：20万自然重砂数据库。</idAbs>
<idPurp>所提供得的空间位置适用。</idPurp>
<idStatus>001</idStatus>
<imageID></imageID>
<dataLangCode>中文</dataLangCode>
</dataIdInfo>
</Metadata>
找到这篇博文，于是拿过来用了，在此基础上做了修改，改成TreeGrid的json格式。博文链接：http://www.cnblogs.com/jaxu/p/3296148.html，博主写的很好呢！
用的一般处理程序，直接将源码贴出来。。。
1 /// <summary>
2 /// XmlToJson 的摘要说明
3 /// </summary>
4 public class XmlToJson : IHttpHandler
5 {
6 public int id = 0;
7 public void ProcessRequest(HttpContext context)
8 {
9 context.Response.ContentType = "text/plain";
10 //String filename = context.Request.Params["fileaddr"];
11 String strResponse = "";
12
13 XmlDocument doc = new XmlDocument();
14 try
15 {
16 String filepath = System.AppDomain.CurrentDomain.BaseDirectory.ToString() + "data/(ah)安庆幅.xml";
17 doc.Load(filepath);
18 }
19 catch (Exception ex)
20 {
21
22 return;
23 }
24
25 // Convert XML to a JSON string
26 string JSON = XmlToJSON(doc);
27
28 // Replace \ with \\ because string is being decoded twice
29 strResponse = JSON.Replace(@"\", @"\\");
30
31 context.Response.Write(strResponse);
32
33
34 }
35
36 private string XmlToJSON(XmlDocument xmlDoc)
37 {
38 StringBuilder sbJSON = new StringBuilder();
39 //sbJSON.Append("{");
40 sbJSON.Append("[");
41 XmlToJSONnode(sbJSON, xmlDoc.DocumentElement, true);
42 //sbJSON.Append("}");
43 sbJSON.Append("]");
44 return sbJSON.ToString();
45 }
46
47 // XmlToJSONnode: Output an XmlElement, possibly as part of a higher array
48 private void XmlToJSONnode(StringBuilder sbJSON, XmlElement node, bool showNodeName)
49 {
50 if (showNodeName)
51 {
52 //sbJSON.Append("\"" + SafeJSON(node.Name) + "\": ");
53 sbJSON.Append("{\"id\":" + id + ",\"name\":\"" + TranslateName(SafeJSON(node.Name)) + "\",\"value\":\"" + "" + "\",\"children\":[");
54 id++;
55 }
56 //sbJSON.Append("{");
57
58 // Build a sorted list of key-value pairs
59 // where key is case-sensitive nodeName
60 // value is an ArrayList of string or XmlElement
61 // so that we know whether the nodeName is an array or not.
62 SortedList childNodeNames = new SortedList();
63
64 // Add in all node attributes
65 if (node.Attributes != null)
66 {
67 foreach (XmlAttribute attr in node.Attributes)
68 {
69 StoreChildNode(childNodeNames, attr.Name, attr.InnerText);
70 }
71 }
72
73 // Add in all nodes
74 foreach (XmlNode cnode in node.ChildNodes)
75 {
76 if (cnode is XmlText)
77 {
78 StoreChildNode(childNodeNames, "value", cnode.InnerText);
79 }
80 else if (cnode is XmlElement)
81 {
82 StoreChildNode(childNodeNames, cnode.Name, cnode);
83 }
84 }
85
86 // Now output all stored info
87 foreach (string childname in childNodeNames.Keys)
88 {
89 ArrayList alChild = (ArrayList)childNodeNames[childname];
90 if (alChild.Count == 1)
91 OutputNode(childname, alChild[0], sbJSON, true);
92 else
93 {
94 //sbJSON.Append(" \"" + SafeJSON(childname) + "\": [ ");
95 sbJSON.Append("{\"id\":" + id + ",\"name\":\"" + TranslateName(SafeJSON(childname)) + "\",\"value\":\"" + "" + "\",\"children\":[");
96 id++;
97 foreach (object Child in alChild)
98 OutputNode(childname, Child, sbJSON, false);
99 sbJSON.Remove(sbJSON.Length - 2, 2);
100 sbJSON.Append(" ], ");
101 }
102 }
103 sbJSON.Remove(sbJSON.Length - 2, 2);
104 //sbJSON.Append(" }");
105 sbJSON.Append(" ]}");
106 }
107
108 // StoreChildNode: Store data associated with each nodeName
109 // so that we know whether the nodeName is an array or not.
110 private void StoreChildNode(SortedList childNodeNames, string nodeName, object nodeValue)
111 {
112 // Pre-process contraction of XmlElement-s
113 if (nodeValue is XmlElement)
114 {
115 // Convert <aa></aa> into "aa":null
116 // <aa>xx</aa> into "aa":"xx"
117 XmlNode cnode = (XmlNode)nodeValue;
118 if (cnode.Attributes.Count == 0)
119 {
120 XmlNodeList children = cnode.ChildNodes;
121 if (children.Count == 0)
122 nodeValue = null;
123 else if (children.Count == 1 && (children[0] is XmlText))
124 nodeValue = ((XmlText)(children[0])).InnerText;
125 }
126 }
127 // Add nodeValue to ArrayList associated with each nodeName
128 // If nodeName doesn‘t exist then add it
129 object oValuesAL = childNodeNames[nodeName];
130 ArrayList ValuesAL;
131 if (oValuesAL == null)
132 {
133 ValuesAL = new ArrayList();
134 childNodeNames[nodeName] = ValuesAL;
135 }
136 else
137 {
138 //ValuesAL = (ArrayList)oValuesAL;
139 //使用的SortedList，所以名称不能相同，这里偷了个懒没有修改。。
140 //如果同一级子节点下有相同名称的节点，那么重新命名
141 ValuesAL = new ArrayList();
142 childNodeNames[nodeName + id] = ValuesAL;
143 }
144
145 ValuesAL.Add(nodeValue);
146 }
147
148 private void OutputNode(string childname, object alChild, StringBuilder sbJSON, bool showNodeName)
149 {
150 if (alChild == null)
151 {
152 if (showNodeName)
153 {
154 //sbJSON.Append("\"" + SafeJSON(childname) + "\": ");
155 sbJSON.Append("{\"id\":" + id + ",\"name\":\"" + TranslateName(SafeJSON(childname)) + "\",\"value\":\"\"}");
156 id++;
157 }
158 //sbJSON.Append("null");
159 }
160 else if (alChild is string)
161 {
162 if (showNodeName)
163 {
164 //sbJSON.Append("\"" + SafeJSON(childname) + "\": ");
165 sbJSON.Append("{\"id\":" + id + ",\"name\":\"" + TranslateName(SafeJSON(childname)) + "\",\"value\":");
166 id++;
167 }
168 string sChild = (string)alChild;
169 sChild = sChild.Trim();
170 //sbJSON.Append("\"" + SafeJSON(sChild) + "\"");
171 sbJSON.Append("\"" + SafeJSON(sChild) + "\"}");
172 id++;
173 }
174 else
175 {
176 XmlToJSONnode(sbJSON, (XmlElement)alChild, showNodeName);
177 }
178 sbJSON.Append(", ");
179 }
180
181 // Make a string safe for JSON
182 private string SafeJSON(string sIn)
183 {
184 StringBuilder sbOut = new StringBuilder(sIn.Length);
185 foreach (char ch in sIn)
186 {
187 if (Char.IsControl(ch) || ch == ‘\‘‘)
188 {
189 //特殊字符不做处理
190 //int ich = (int)ch;
191 //sbOut.Append(@"\u" + ich.ToString("x4"));
192 continue;
193 }
194 else if (ch == ‘\"‘ || ch == ‘\\‘ || ch == ‘/‘)
195 {
196 sbOut.Append(‘\\‘);
197 }
198 sbOut.Append(ch);
199 }
200 return sbOut.ToString();
201 }
202
203 //翻译，将英文翻译为中文。
204 private string TranslateName(string jsonName)
205 {
206 Translate g_translate = new Translate();
207 string trsName = jsonName;
208 try
209 {
210 trsName = g_translate.DicTranslate[jsonName];
211 }
212 catch (Exception ex)
213 {
214
215 }
216 return trsName;
217 }
218
219 public bool IsReusable
220 {
221 get
222 {
223 return false;
224 }
225 }
226 }
TranslateName()是用来做中英翻译。 3.最后效果展示：之所以没有按XML的顺序排列，是因为 SortedList 进行了排序。
时间： 2024-08-15 23:06:22