WebDav(Web-based Distributed Authoring and Versioning)是一种基于HTTP1.1协议的通信协议，扩展了HTTP1.1，主要有GET（检索文档），PUT和POST（将文档提交到服务器），HEAD，OPTIONS和TRACE（主要由应用程序用来发现和跟踪服务器支持和网络行为），DELETE（销魂资源或集合）Mkcol(创建集合)，PropFind和PropPatch(针对资源和集合检索和设置属性)，Copy和Move（管理命名空间上下文中的资源和集合），Lock和Unlock（改写保护）。
WebDav请求的一般机构遵循HTTP格式，并且由一下三个组件构成：
1.方法，声明由客户端执行的方法
2.标头，描述有关如何完成此任何的指令。
3.主体（optional），定义用在该指令或者其他指令中的数据，用以描述如何完成此方法。
WebDav允许客户端进行下列操作：
处理服务器上 WebDAV 发布目录中的资源。使用此功能，其优点例如:
1.具有正确权限的用户可以在 WebDAV目录中复制和移动文件。
2.修改与某些资源相关联的属性。例如，用户可写入并检索文件的属性信息。
3.锁定并解锁资源以便多个用户可同时读取一个文件。但每次只能有一个人修改文件。
4.搜索 WebDAV 目录中的文件的内容和属性。
Apache支持WebDav服务，而且配置也很简单。
1.Enable module：
LoadModule dav_module modules/mod_dav.so
LoadModule dav_fs_module modules/mod_dav_fs.so
LoadModule dav_lock_module modules/mod_dav_lock.so
2.Remove comment out:
Include conf/extra/httpd-dav.conf
3.open http-dav.conf
#
# Distributed authoring and versioning (WebDAV)
#
# Required modules: mod_dav, mod_dav_fs, mod_setenvif, mod_alias
# mod_auth_digest, mod_authn_file
#
# The following example gives DAV write access to a directory called
# "uploads" under the ServerRoot directory.
#
# The User/Group specified in httpd.conf needs to have write permissions
# on the directory where the DavLockDB is placed and on any directory where
# "Dav On" is specified.
DavLockDB "C:/development/Apache Software Foundation/Apache2.2/var/DavLock"
Alias /uploads "C:/development/Apache Software Foundation/Apache2.2/uploads"
#CustomLog "C:/development/Apache Software Foundation/Apache2.2/logs/all-bw.log" IOFormat
Dav On
IndexOptions FancyIndexing VersionSort FoldersFirst NameWidth=*
Options Indexes MultiViews
#display the file list for webdav service
Order Allow,Deny
Allow from all
AuthType Digest
AuthName DAV-upload
# You can use the htdigest program to create the password database:
# htdigest -c "C:/development/Apache Software Foundation/Apache2.2/user.passwd" DAV-upload admin
AuthUserFile "C:/development/Apache Software Foundation/Apache2.2/user.passwd"
AuthDigestProvider file
# Allow universal read-access, but writes are restricted
# to the admin user.
require user iptv
#
# The following directives disable redirects on non-GET requests for
# a directory that does not include the trailing slash. This fixes a
# problem with several clients that do not appropriately handle
# redirects for folders with DAV methods.
#
BrowserMatch "Microsoft Data Access Internet Publishing Provider" redirect-carefully
BrowserMatch "MS FrontPage" redirect-carefully
BrowserMatch "^WebDrive" redirect-carefully
BrowserMatch "^WebDAVFS/1.[0123]" redirect-carefully
BrowserMatch "^gnome-vfs/1.0" redirect-carefully
BrowserMatch "^XML Spy" redirect-carefully
BrowserMatch "^Dreamweaver-WebDAV-SCM1" redirect-carefully
4.创建账户
htdigest -c "C:/development/Apache Software Foundation/Apache2.2/user.passwd" DAV-upload admin
5. http-dav解释
Dav on 启用WebDav服务
Options Indexes MultiViews 在web页面用显示文件列表
IndexOptions FancyIndexing VersionSort FoldersFirst NameWidth=*在文件列表中显示相关信息
Order Allow,Deny
Allow from all 先检查禁止设定，没有禁止的全部允许
AuthType Digest 使用Digest授权方式
AuthUserFile authentication的文件
LimitExcept 除了..以外都需要校验信息