自定义开发的系统整合 office Web apps

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1. public class LinkController : ApiController  
2.     {  
3.         /// <summary>  
4.         /// Provides a link that can be used to Open a document in the relative viewer  
5.         /// from the Office Web Apps server  
6.         /// </summary>  
7.         /// <param name="fileRequest">indicates the request type</param>  
8.         /// <returns>A link usable for HREF</returns>  
9.         public Link GetLink([FromUri] FileRequest fileRequest)  
10.         {  
11.             if (ModelState.IsValid)  
12.             {  
13.                 var xml = WebConfigurationManager.AppSettings["appDiscoveryXml"];  
14.                 var wopiServer = WebConfigurationManager.AppSettings["appWopiServer"];  
15.                 bool updateEnabled = false;  
16.                 bool.TryParse(WebConfigurationManager.AppSettings["updateEnabled"], out updateEnabled);  
17.                 WopiAppHelper wopiHelper = new WopiAppHelper(HostingEnvironment.MapPath(xml), updateEnabled);  
18.   
19.                 var result = wopiHelper.GetDocumentLink(wopiServer + fileRequest.name);  
20.   
21.                 var rv = new Link  
22.                 {  
23.                     Url = result  
24.                 };  
25.                 return rv;  
26.             }  
27.   
28.             throw new ApplicationException("Invalid ModelState");  
29.         }  
30.     }  
31.   
32. public class WopiAppHelper  
33.     {  
34.         string _discoveryFile;  
35.         bool _updateEnabled = false;  
36.         WopiHost.wopidiscovery _wopiDiscovery;  
37.   
38.         public WopiAppHelper(string discoveryXml)  
39.         {  
40.             _discoveryFile = discoveryXml;  
41.   
42.             using (StreamReader file = new StreamReader(discoveryXml))  
43.             {  
44.                 XmlSerializer reader = new XmlSerializer(typeof(WopiHost.wopidiscovery));  
45.                 var wopiDiscovery = reader.Deserialize(file) as WopiHost.wopidiscovery;  
46.                 _wopiDiscovery = wopiDiscovery;  
47.             }  
48.         }  
49.   
50.         public WopiAppHelper(string discoveryXml, bool updateEnabled)  
51.             : this(discoveryXml)  
52.         {  
53.             _updateEnabled = updateEnabled;  
54.         }  
55.   
56.         public WopiHost.wopidiscoveryNetzoneApp GetZone(string AppName)  
57.         {  
58.             var rv = _wopiDiscovery.netzone.app.Where(c => c.name == AppName).FirstOrDefault();  
59.             return rv;  
60.         }  
61.   
62.         public string GetDocumentLink(string wopiHostandFile)  
63.         {  
64.             var fileName = wopiHostandFile.Substring(wopiHostandFile.LastIndexOf(‘/‘) + 1);  
65.             var accessToken = GetToken(fileName);  
66.             var fileExt = fileName.Substring(fileName.LastIndexOf(‘.‘) + 1);  
67.             var netzoneApp = _wopiDiscovery.netzone.app.AsEnumerable()  
68.                 .Where(c => c.action.Where(d => d.ext == fileExt).Count() > 0);  
69.   
70.             var appName = netzoneApp.FirstOrDefault();  
71.   
72.             if (null == appName) throw new ArgumentException("invalid file extension " + fileExt);  
73.   
74.             var rv = GetDocumentLink(appName.name, fileExt, wopiHostandFile, accessToken);  
75.   
76.             return rv;  
77.         }  
78.   
79.         string GetToken(string fileName)  
80.         {  
81.             KeyGen keyGen = new KeyGen();  
82.             var rv = keyGen.GetHash(fileName);  
83.   
84.             return HttpUtility.UrlEncode(rv);  
85.         }  
86.   
87.         const string s_WopiHostFormat = "{0}?WOPISrc={1}&access_token={2}";  
88.         //HACK:  
89.         const string s_WopiHostFormatPdf = "{0}?PdfMode=1&WOPISrc={1}&access_token={2}";  
90.   
91.         public string GetDocumentLink(string appName, string fileExtension, string wopiHostAndFile, string accessToken)  
92.         {  
93.             var wopiHostUrlsafe = HttpUtility.UrlEncode(wopiHostAndFile.Replace(" ", "%20"));  
94.             var appStuff = _wopiDiscovery.netzone.app.Where(c => c.name == appName).FirstOrDefault();  
95.   
96.             if (null == appStuff)  
97.                 throw new ApplicationException("Can‘t locate App: " + appName);  
98.   
99.             var action = _updateEnabled ? "edit" : "view";  
100.             if (appName.Equals("WordPdf"))  
101.             {  
102.                 action = "view";  
103.             }  
104.             if (HttpContext.Current.Request.Browser.IsMobileDevice)  
105.             {  
106.                 action = "mobileView";  
107.             }  
108.             var appAction = appStuff.action.Where(c => c.ext == fileExtension && c.name == action).FirstOrDefault();  
109.   
110.             if (null == appAction)  
111.                 throw new ApplicationException("Can‘t locate UrlSrc for : " + appName);  
112.   
113.             var endPoint = appAction.urlsrc.IndexOf(‘?‘);  
114.             var endAction = appAction.urlsrc.Substring(0, endPoint);  
115.   
116.             string fullPath = null;  
117.             ////HACK: for PDF now just append WordPdf option...  
118.             if (fileExtension.Contains("pdf"))  
119.             {  
120.                 fullPath = string.Format( s_WopiHostFormatPdf, endAction, wopiHostUrlsafe, accessToken);  
121.             }  
122.             else  
123.             {  
124.                 fullPath = string.Format(s_WopiHostFormat, endAction,  wopiHostUrlsafe, accessToken);  
125.             }  
126.   
127.             return fullPath;  
128.         }  
129.     }  

public class LinkController : ApiController
    {
        /// <summary>
        /// Provides a link that can be used to Open a document in the relative viewer
        /// from the Office Web Apps server
        /// </summary>
        /// <param name="fileRequest">indicates the request type</param>
        /// <returns>A link usable for HREF</returns>
        public Link GetLink([FromUri] FileRequest fileRequest)
        {
            if (ModelState.IsValid)
            {
                var xml = WebConfigurationManager.AppSettings["appDiscoveryXml"];
                var wopiServer = WebConfigurationManager.AppSettings["appWopiServer"];
                bool updateEnabled = false;
                bool.TryParse(WebConfigurationManager.AppSettings["updateEnabled"], out updateEnabled);
                WopiAppHelper wopiHelper = new WopiAppHelper(HostingEnvironment.MapPath(xml), updateEnabled);

                var result = wopiHelper.GetDocumentLink(wopiServer + fileRequest.name);

                var rv = new Link
                {
                    Url = result
                };
                return rv;
            }

            throw new ApplicationException("Invalid ModelState");
        }
    }

public class WopiAppHelper
    {
        string _discoveryFile;
        bool _updateEnabled = false;
        WopiHost.wopidiscovery _wopiDiscovery;

        public WopiAppHelper(string discoveryXml)
        {
            _discoveryFile = discoveryXml;

            using (StreamReader file = new StreamReader(discoveryXml))
            {
                XmlSerializer reader = new XmlSerializer(typeof(WopiHost.wopidiscovery));
                var wopiDiscovery = reader.Deserialize(file) as WopiHost.wopidiscovery;
                _wopiDiscovery = wopiDiscovery;
            }
        }

        public WopiAppHelper(string discoveryXml, bool updateEnabled)
            : this(discoveryXml)
        {
            _updateEnabled = updateEnabled;
        }

        public WopiHost.wopidiscoveryNetzoneApp GetZone(string AppName)
        {
            var rv = _wopiDiscovery.netzone.app.Where(c => c.name == AppName).FirstOrDefault();
            return rv;
        }

        public string GetDocumentLink(string wopiHostandFile)
        {
            var fileName = wopiHostandFile.Substring(wopiHostandFile.LastIndexOf(‘/‘) + 1);
            var accessToken = GetToken(fileName);
            var fileExt = fileName.Substring(fileName.LastIndexOf(‘.‘) + 1);
            var netzoneApp = _wopiDiscovery.netzone.app.AsEnumerable()
                .Where(c => c.action.Where(d => d.ext == fileExt).Count() > 0);

            var appName = netzoneApp.FirstOrDefault();

            if (null == appName) throw new ArgumentException("invalid file extension " + fileExt);

            var rv = GetDocumentLink(appName.name, fileExt, wopiHostandFile, accessToken);

            return rv;
        }

        string GetToken(string fileName)
        {
            KeyGen keyGen = new KeyGen();
            var rv = keyGen.GetHash(fileName);

            return HttpUtility.UrlEncode(rv);
        }

        const string s_WopiHostFormat = "{0}?WOPISrc={1}&access_token={2}";
        //HACK:
        const string s_WopiHostFormatPdf = "{0}?PdfMode=1&WOPISrc={1}&access_token={2}";

        public string GetDocumentLink(string appName, string fileExtension, string wopiHostAndFile, string accessToken)
        {
            var wopiHostUrlsafe = HttpUtility.UrlEncode(wopiHostAndFile.Replace(" ", "%20"));
            var appStuff = _wopiDiscovery.netzone.app.Where(c => c.name == appName).FirstOrDefault();

            if (null == appStuff)
                throw new ApplicationException("Can‘t locate App: " + appName);

            var action = _updateEnabled ? "edit" : "view";
            if (appName.Equals("WordPdf"))
            {
                action = "view";
            }
            if (HttpContext.Current.Request.Browser.IsMobileDevice)
            {
                action = "mobileView";
            }
            var appAction = appStuff.action.Where(c => c.ext == fileExtension && c.name == action).FirstOrDefault();

            if (null == appAction)
                throw new ApplicationException("Can‘t locate UrlSrc for : " + appName);

            var endPoint = appAction.urlsrc.IndexOf(‘?‘);
            var endAction = appAction.urlsrc.Substring(0, endPoint);

            string fullPath = null;
            ////HACK: for PDF now just append WordPdf option...
            if (fileExtension.Contains("pdf"))
            {
                fullPath = string.Format( s_WopiHostFormatPdf, endAction, wopiHostUrlsafe, accessToken);
            }
            else
            {
                fullPath = string.Format(s_WopiHostFormat, endAction,  wopiHostUrlsafe, accessToken);
            }

            return fullPath;
        }
    }