（一）.ProxyPass 指令

說(shuō)明: 將一個(gè)遠(yuǎn)端服務(wù)器映射到本地服務(wù)器的URL空間中
語(yǔ)法: ProxyPass [路徑] !|url
上下文: 服務(wù)器配置, 虛擬主機(jī)
狀態(tài): Extension
模塊: mod_proxy

指令對(duì)于您不想對(duì)某個(gè)子目錄進(jìn)行反向代理時(shí)很有用。比如說(shuō)：

ProxyPass /mirror/foo/i !
ProxyPass /mirror/foo http://foo.com

將會(huì)代理除對(duì)/mirror/foo/i請(qǐng)求之外的所有對(duì) foo.com 的/mirror/foo請(qǐng)求。

注意：順序很重要，您需要把特例情況放在一般代理通過(guò)指令
當(dāng)在<Location>配置段中使用時(shí)，第一個(gè)參數(shù)會(huì)被忽略而是采用由<Location>指令指定的本地目錄。

如果您需要一個(gè)更加靈活的反向代理配置，請(qǐng)參見(jiàn)使用[P]標(biāo)記的RewriteRule指令。

（二）.ProxyPassReverse 指令

說(shuō)明: 調(diào)整由反向代理服務(wù)器發(fā)送的HTTP回應(yīng)頭中的URL
語(yǔ)法: ProxyPassReverse [路徑] url
上下文: 服務(wù)器配置, 虛擬主機(jī)
狀態(tài): Extension
模塊: mod_proxy

此 指令使 Apache 調(diào)整HTTP重定向回應(yīng)中Location， Content-Location和URI頭里的URL。 HTTP redirect responses. This is essential when Apache is used as a reverse proxy to avoid by-passing the reverse proxy because of HTTP redirects on the backend servers which stay behind the reverse proxy.

路徑是本地虛擬路徑的名稱。
url遠(yuǎn)端服務(wù)器的部分URL。與ProxyPass指令中的使用方法相同。

示例：
假定本地服務(wù)器擁有地址http://wibble.org/；那么

ProxyPass /mirror/foo/ http://foo.com/
ProxyPassReverse /mirror/foo/ http://foo.com/

will not only cause a local request for the <http://wibble.org/mirror/foo/bar> to be internally converted into a proxy request to <http://foo.com/bar> (the functionality ProxyPass provides here). It also takes care of redirects the server foo.com sends: when http://foo.com/bar is redirected by him to http://foo.com/quux Apache adjusts this to http://wibble.org/mirror/foo/quux before forwarding the HTTP redirect response to the client. Note that the hostname used for constructing the URL is chosen in respect to the setting of the UseCanonicalName directive.

Note that this ProxyPassReverse directive can also be used in conjunction with the proxy pass-through feature ("RewriteRule ... [P]") from mod_rewrite because its doesn't depend on a corresponding ProxyPass directive.

When used inside a <Location> section, the first argument is ommitted and the local directory is obtained from the <Location>.

（三）.實(shí)際問(wèn)題解決及說(shuō)明：

<IfModule mod_proxy.c>
      ProxyPass /mysys/ http://192.168.8.11:81/mysys/
      ProxyPassReverse /mysys/ http://192.168.8.11:81/mysys/
</IfModule>

①  這里有兩個(gè)mysys，我們分別叫做叫做path_wapm和path_iis

ProxyPass /path_wapm/
     http://192.168.8.11:81/path_iis/
     path_wapm：這個(gè)是虛擬的目錄名稱，可以任意指定一個(gè)

②ProxyPassReverse /path_wapm/
     http://192.168.8.11:81/path_iis/
     path_iis：這個(gè)必須通過(guò)81端口可以訪問(wèn)的

那么，訪問(wèn)http://wapm服務(wù)器/path_wapm的時(shí)候,實(shí)際訪問(wèn)的將自動(dòng)轉(zhuǎn)換為了
http://192.168.8.11:81/path_iis/的.

③path_wapm如果不加,就不知道訪問(wèn)哪一個(gè)虛擬目錄的時(shí)候需要使用ASP,

path_iis不加,那么就是訪問(wèn)http://192.168.8.11:81/的效果了

簡(jiǎn)單來(lái)說(shuō):就是把IIS站點(diǎn)的一個(gè)目錄,當(dāng)作WAPM的一個(gè)虛擬目錄來(lái)訪問(wèn),
可以是IIS站點(diǎn)的一個(gè)子目錄,也可以是根目錄.