使用SharePoint 2010 客户端对象模型进行文档库及文档的操作

-   Client Object Model是SharePoint 2010对开发提供新的支持。我前两周在给一个客户做POC，主要内容是将SharePoint 2010 作为一个纯内容管理平台，并隐藏起来不给最终用户看到，最终用户通过原有平台进行文档的增删查改操作。这些都是用默认的认证方式，认证及权限代码没有包含在内。以下是我截取其中的一些代码。

在SharePoint 2010 中创建文档库 

public string CreateDocumentLibrary(string siteUrl, string DocumentLibraryName,string userName)
{
    ListCreationInformation newListInfo = new ListCreationInformation();
    newListInfo.Title = DocumentLibraryName;
    newListInfo.TemplateType = (int)ListTemplateType.DocumentLibrary;
    List newList;
    using (ClientContext clientContext = new ClientContext(siteUrl))
    {
        clientContext.Credentials = System.Net.CredentialCache.DefaultCredentials;
        Web site = clientContext.Web;
        newList = site.Lists.Add(newListInfo);            
        clientContext.Load(newList);
        clientContext.ExecuteQuery();
    }

    return "Create Success";       
}

在SharePoint 2010 中删除文档库

public string DeleteDocumentLibrary(string siteUrl, string DocumentLibraryName)
{
    using (ClientContext clientContext = new ClientContext(siteUrl))
    {
        clientContext.Credentials = System.Net.CredentialCache.DefaultCredentials;
        Web site = clientContext.Web;
        List existList = site.Lists.GetByTitle(DocumentLibraryName);
        existList.DeleteObject();
        clientContext.ExecuteQuery();
        clientContext.Dispose();
    }
    return "Delete Success";
}

在SharePoint 2010 中上传文档

public string UploadFileToDocumntLibrary(string siteUrl, string documentListName, string documentListURL, string documentName, byte[] documentStream)
{
    using (ClientContext clientContext = new ClientContext(siteUrl))
    {
        clientContext.Credentials = System.Net.CredentialCache.DefaultCredentials;
        List documentsList = clientContext.Web.Lists.GetByTitle(documentListName);
        var fileCreationInformation = new FileCreationInformation();
        fileCreationInformation.Content = documentStream;
        fileCreationInformation.Overwrite = true;
        fileCreationInformation.Url = siteUrl+ documentListURL+"/" + documentName;
        Microsoft.SharePoint.Client.File uploadFile = documentsList.RootFolder.Files.Add(fileCreationInformation);
        uploadFile.ListItemAllFields.Update();
        clientContext.ExecuteQuery();
    }
    return "upload success";
}

在SharePoint 2010 中下载文档 

public byte[] DownloadDocument(string siteURL, string documentListName, string documentName)
{
    ListItem item = GetDocumentFromSP(siteURL, documentListName, documentName);
    if (item != null)
    {
        using (ClientContext clientContext = new ClientContext(siteURL))
        {              
            clientContext.Credentials = System.Net.CredentialCache.DefaultCredentials;
            FileInformation fInfo = Microsoft.SharePoint.Client.File.OpenBinaryDirect(clientContext, item["FileRef"].ToString());
            Stream s = fInfo.Stream;
            byte[] bt = ReadFully(s, 0);
            return bt;              
        }
    }
    return null;
}

在SharePoint 2010 中获取文档库中的文档

public List<SharePointListItem> GetListItemCollection(string siteURL, string documentListName)
{
    ListItemCollection listItems = GetListItemCollectionFromSP(siteURL, documentListName,20);
    List<SharePointListItem> lireturn = new List<SharePointListItem>();
    foreach (ListItem li in listItems)
    {
        SharePointListItem item = new SharePointListItem();
        item.Type = li.FileSystemObjectType.ToString();
        item.DisplayName = li.FieldValues["FileLeafRef"].ToString();
        item.FilePath = li.FieldValues["FileRef"].ToString();
        item.CreatedDate =(DateTime)li.FieldValues["Created"];
        item.ModifiedDate =(DateTime)li.FieldValues["Modified"];
        item.Author = ((Microsoft.SharePoint.Client.FieldUserValue)li.FieldValues["Author"]).LookupValue;
        item.Editor=((Microsoft.SharePoint.Client.FieldUserValue)li.FieldValues["Editor"]).LookupValue;
        lireturn.Add(item);
    }
    return lireturn;
}

上面方法调用的方法

// Code by 丁为平

private ListItem GetDocumentFromSP(string siteURL, string documentListName, string documentName)
{
    ListItemCollection listItems = GetListItemCollectionFromSP(siteURL, documentListName, "FileLeafRef",
            documentName, "Text", 1);
    return (listItems != null && listItems.Count == 1) ? listItems[0] : null;

}

private ListItemCollection GetListItemCollectionFromSP(string siteURL, string documentListName, int rowLimit)
{
    ListItemCollection listItems = null;
    using (ClientContext clientContext = new ClientContext(siteURL))
    {
        clientContext.Credentials = System.Net.CredentialCache.DefaultCredentials;   
        List documentsList = clientContext.Web.Lists.GetByTitle(documentListName);
        CamlQuery camlQuery = new CamlQuery();             
        camlQuery.ViewXml =
            @"<View>
                <Query>                  
                <RowLimit>" + rowLimit.ToString() + @"</RowLimit>
                </Query>
              </View>";
        listItems = documentsList.GetItems(camlQuery);
        clientContext.Load(documentsList);
        clientContext.Load(listItems);
        clientContext.ExecuteQuery();
    }
    return listItems;
} 

private ListItemCollection GetListItemCollectionFromSP(string siteURL, string documentListName, string name, string value, string type, int rowLimit)
{
    ListItemCollection listItems = null;
    using (ClientContext clientContext = new ClientContext(siteURL))
    {
        clientContext.Credentials = System.Net.CredentialCache.DefaultCredentials;
        List documentsList = clientContext.Web.Lists.GetByTitle(documentListName);
        CamlQuery camlQuery = new CamlQuery(); 
        camlQuery.ViewXml =
            @"<View>
                <Query>
                <Where>
                <Eq>
                <FieldRef Name='" + name + @"'/>
                <Value Type='" + type + "'>" + value + @"</Value>
                </Eq>                       </Where>                    
                <RowLimit>" + rowLimit.ToString() + @"</RowLimit>
                </Query>
                </View>";
        listItems = documentsList.GetItems(camlQuery);
        clientContext.Load(documentsList);
        clientContext.Load(listItems);
        clientContext.ExecuteQuery();
    }
    return listItems;
}

private byte[] ReadFully(Stream stream, int initialLength)
{
    // If we've been passed an unhelpful initial length, just
    // use 32K.
    if (initialLength < 1)
    {
        initialLength = 32768;
    }
    byte[] buffer = new byte[initialLength];
    int read = 0;
    int chunk;
    while ((chunk = stream.Read(buffer, read, buffer.Length - read)) > 0)
    {
        read += chunk;
        // If we've reached the end of our buffer, check to see if there's
        // any more information
        if (read == buffer.Length)
        {
            int nextByte = stream.ReadByte();
            // End of stream? If so, we're done
            if (nextByte == -1)
            {
                return buffer;
            }
            byte[] newBuffer = new byte[buffer.Length * 2];
            Array.Copy(buffer, newBuffer, buffer.Length);
            newBuffer[read] = (byte)nextByte;
            buffer = newBuffer;
            read++;
        }
    }
    byte[] ret = new byte[read];
    Array.Copy(buffer, ret, read);
    return ret;
}

还有一个支持类

[Serializable]
public class SharePointListItem
{    
    public SharePointListItem()
    {
    }
    public string DisplayName { get; set; }
    public string FilePath { get; set; }
    public DateTime CreatedDate { get; set; }
    public DateTime ModifiedDate { get; set; }
    public string Author { get; set; }
    public string Editor { get; set; }
    public string Type { get; set; }    
}