通过InfoPath Form生成的XML文件在文件开头的地方都会附加上一段特定的信息,用于标识该XML文件是由什么版本的InfoPath Form生成的,所对应的XSN模板的存放位置等信息,如下图所示:
那么我们在使用XDocument.Load()方法加载该XML文件之后,如何获取到文件头中相关的节点信息呢?如mso-infoPathSolution。
在XmlNodeType类型中,ProcessingInstruction申明了类似于“<?pi test?>” 的节点,我们可以通过该属性来筛选XML的节点,下面的函数用于找出InfoPath Form XML文件中的文件头信息,并将mso-infoPathSolution节点中的href属性值做修改,将XSN模板的位置修改成别的服务器中对应的位置。
1
///
<summary>
2 /// Replace the reference url with the target server name for each InfoPath xml file.
3 /// </summary>
4 /// <param name="path"></param>
5 /// <param name="targetServer"></param>
6 public static void ReplaceReferenceUrl( string path, string targetServer)
7 {
8 const string pattern = " href=\"http://.*?/ "; // Regular expression used for replacing the reference url in the XML files.
9 DirectoryInfo info = new DirectoryInfo(path);
10 FileInfo[] files = info.GetFiles( " *.xml ");
11
12 foreach (FileInfo file in files)
13 {
14 XDocument document = XDocument.Load(file.FullName);
15 List<XNode> list = document.Nodes().Where(t => t.NodeType == System.Xml.XmlNodeType.ProcessingInstruction).ToList<XNode>();
16 if (list != null)
17 {
18 foreach (XNode item in list)
19 {
20 XProcessingInstruction tmp = item as XProcessingInstruction;
21 if (tmp.Target.Equals( " mso-infoPathSolution "))
22 {
23 Regex reg = new Regex(pattern);
24 tmp.Data = reg.Replace(tmp.Data, " href=\"http:// " + targetServer + " / ");
25 document.Save(file.FullName);
26 break;
27 }
28 }
29 }
30 }
31
32 DirectoryInfo[] direcotries = info.GetDirectories();
33 foreach (DirectoryInfo directory in direcotries)
34 {
35 ReplaceReferenceUrl(directory.FullName, targetServer);
36 }
2 /// Replace the reference url with the target server name for each InfoPath xml file.
3 /// </summary>
4 /// <param name="path"></param>
5 /// <param name="targetServer"></param>
6 public static void ReplaceReferenceUrl( string path, string targetServer)
7 {
8 const string pattern = " href=\"http://.*?/ "; // Regular expression used for replacing the reference url in the XML files.
9 DirectoryInfo info = new DirectoryInfo(path);
10 FileInfo[] files = info.GetFiles( " *.xml ");
11
12 foreach (FileInfo file in files)
13 {
14 XDocument document = XDocument.Load(file.FullName);
15 List<XNode> list = document.Nodes().Where(t => t.NodeType == System.Xml.XmlNodeType.ProcessingInstruction).ToList<XNode>();
16 if (list != null)
17 {
18 foreach (XNode item in list)
19 {
20 XProcessingInstruction tmp = item as XProcessingInstruction;
21 if (tmp.Target.Equals( " mso-infoPathSolution "))
22 {
23 Regex reg = new Regex(pattern);
24 tmp.Data = reg.Replace(tmp.Data, " href=\"http:// " + targetServer + " / ");
25 document.Save(file.FullName);
26 break;
27 }
28 }
29 }
30 }
31
32 DirectoryInfo[] direcotries = info.GetDirectories();
33 foreach (DirectoryInfo directory in direcotries)
34 {
35 ReplaceReferenceUrl(directory.FullName, targetServer);
36 }
首先通过拉姆达表达式 找出所有ProcessingInstruction类型的节点,然后使用正则表达式替换href属性的值(注意只替换了其中ServerName的部分)。后面的递归调用表示该方法允许修改指定目录中所有的XML文件。
在SharePoint中,很多地方使用InfoPath Form来收集XML数据文件,当需要批量上传InfoPath XML文件时,修改文件头信息是必要的步骤,通过上面的函数,我们可以很简单地实现这一点!记录一下,以方便日后查阅。
本文转自Jaxu博客园博客,原文链接:http://www.cnblogs.com/jaxu/archive/2011/10/04/2198752.html,如需转载请自行联系原作者