memo：Liferay中瀏覽器判斷方法

Liferay中特地寫了一個類來判斷瀏覽器的版本，操作系統等。知道有這麼個東西的話，還是不錯的。

就不需要自己去寫了。

類：

com.liferay.portal.kernel.servlet.BrowserSnifferUtil

提供的方法：

static boolean	acceptsGzip(javax.servlet.http.HttpServletRequest request)
static BrowserSniffer	getBrowserSniffer()
static boolean	is_ie_4(javax.servlet.http.HttpServletRequest request)
static boolean	is_ie_5_5_up(javax.servlet.http.HttpServletRequest request)
static boolean	is_ie_5_5(javax.servlet.http.HttpServletRequest request)
static boolean	is_ie_5(javax.servlet.http.HttpServletRequest request)
static boolean	is_ie_6(javax.servlet.http.HttpServletRequest request)
static boolean	is_ie_7(javax.servlet.http.HttpServletRequest request)
static boolean	is_ie(javax.servlet.http.HttpServletRequest request)
static boolean	is_linux(javax.servlet.http.HttpServletRequest request)
static boolean	is_mozilla_1_3_up(javax.servlet.http.HttpServletRequest request)
static boolean	is_mozilla(javax.servlet.http.HttpServletRequest request)
static boolean	is_ns_4(javax.servlet.http.HttpServletRequest request)
static boolean	is_rtf(javax.servlet.http.HttpServletRequest request)
static boolean	is_safari_3(javax.servlet.http.HttpServletRequest request)
static boolean	is_safari_mobile(javax.servlet.http.HttpServletRequest request)
static boolean	is_safari(javax.servlet.http.HttpServletRequest request)
static boolean	is_wap_xhtml(javax.servlet.http.HttpServletRequest request)
static boolean	is_wap(javax.servlet.http.HttpServletRequest request)
static boolean	is_wml(javax.servlet.http.HttpServletRequest request)