JAVA 文件上传后台判断浏览器的类型以及JDK1.5和1.6处理的不同

以前或多或少的遇到遇到浏览器不兼容的问题，但是大多数都是在前端，没想到这一次居然发生在后台。

当做文件的上传时，传到后台的文件的名字是根据浏览器不同，而有所差别的，在谷歌的Chrome和IE中，传到后台的时候的，文件的名字会附上你本地的路径，而FireFox则不会（直接是文件的名字），当然如果你直接忽略这个文件的名字或者不用到这个文件的名字也就无所谓。

但是，当你要用到这个文件的文件名作为你上传文件的名字的一部分的时候，例如：fileName = 随机数+文件名。这个时候在Chrome中有你上传文件的本地路径，如：C:/hello.xls，那么你保存的时候，就会有“：“，“/”等这些特殊字符，会报错，因此，再次需要判断浏览器的类型，来进行处理。

String userAgent = request.getHeader("user-agent");
//如果是IE或者Chrome，则文件的文件名极为上传文件最后一个名字
if(userAgent.indexOf("MSIE")!=-1 || userAgent.indexOf("Chrome")!=-1){
oFileName = originalfile[originalfile.length-1]
}else {
oFileName = params.originalfile
}

另外，在JDK1.5和1.6中，对于 def path = request.getRealPath("/") 得到的path也不尽相同，在1.5中path后面没有”/“，而在1.6中后面则有，为了解决这个问题，用下面方法即可

def path = request.getRealPath("/")
if(!path.endsWith("/")){
path = path + "/"
}

最后附上从浏览器得到的 user-agent :

iPad User Agent String

Mozilla/5.0 (iPad; U; CPU OS 3_2 like Mac OS X; en-us) AppleWebKit/531.21.10 (KHTML, like Gecko) Version/4.0.4 Mobile/7B334b Safari/531.21.10

Google Android user agent strings

Mozilla/5.0 (Linux; U; Android 0.5; en-us) AppleWebKit/522+ (KHTML, like Gecko) Safari/419.3

Google Nexus

Mozilla/5.0 (Linux; U; Android 2.2; en-us; Nexus One Build/FRF91) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1

Mozilla/5.0 (Linux; U; Android 2.1; en-us; Nexus One Build/ERD62) AppleWebKit/530.17 (KHTML, like Gecko) Version/4.0 Mobile Safari/530.17

Dell

Mozilla/5.0 (Linux; U; Android 1.6; en-gb; Dell Streak Build/Donut AppleWebKit/528.5+ (KHTML, like Gecko) Version/3.1.2 Mobile Safari/ 525.20.1

HTC

Mozilla/5.0 (Linux; U; Android 2.1-update1; de-de; HTC Desire 1.19.161.5 Build/ERE27) AppleWebKit/530.17 (KHTML, like Gecko) Version/4.0 Mobile Safari/530.17

Mozilla/5.0 (Linux; U; Android 2.1-update1; en-us; ADR6300 Build/ERE27) AppleWebKit/530.17 (KHTML, like Gecko) Version/4.0 Mobile Safari/530.17

Mozilla/5.0 (Linux; U; Android 1.6; en-us; WOWMobile myTouch 3G Build/unknown) AppleWebKit/528.5+ (KHTML, like Gecko) Version/3.1.2 Mobile Safari/525.20.1

Mozilla/5.0 (Linux; U; Android 2.2; nl-nl; Desire_A8181 Build/FRF91) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1

HTC_Dream Mozilla/5.0 (Linux; U; Android 1.5; en-ca; Build/CUPCAKE) AppleWebKit/528.5+ (KHTML, like Gecko) Version/3.1.2 Mobile Safari/525.20.1

Motorola

Mozilla/5.0 (Linux; U; Android 2.2; en-us; DROID2 GLOBAL Build/S273) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1

Mozilla/5.0 (Linux; U; Android 3.0; en-us; Xoom Build/HRI39) AppleWebKit/534.13 (KHTML, like Gecko) Version/4.0 Safari/534.13

Mozilla/5.0 (Linux; U; Android 2.2; en-us; Droid Build/FRG22D) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1

Mozilla/5.0 (Linux; U; Android 2.2; en-us; DROID2 GLOBAL Build/S273) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1

Mozilla/5.0 (Linux; U; Android 2.1-update1; en-us; DROIDX Build/VZW) AppleWebKit/530.17 (KHTML, like Gecko) Version/4.0 Mobile Safari/530.17 480X854 motorola DROIDX

Mozilla/5.0 (Linux; U; Android 2.1-update1; en-us; Droid Build/ESE81) AppleWebKit/530.17 (KHTML, like Gecko) Version/4.0 Mobile Safari/530.17

Mozilla/5.0 (Linux; U; Android 2.0; en-us; Droid Build/ESD20) AppleWebKit/530.17 (KHTML, like Gecko) Version/4.0 Mobile Safari/ 530.17

Samsung

Mozilla/5.0 (Linux; U; Android 2.2; en-gb; GT-P1000 Build/FROYO) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1

Mozilla/5.0 (Linux; U; Android 2.2; en-ca; SGH-T959D Build/FROYO) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1

Mozilla/5.0 (Linux; U; Android 2.2; en-gb; GT-P1000 Build/FROYO) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1

Mozilla/5.0 (Linux; U; Android 2.0.1; en-us; Droid Build/ESD56) AppleWebKit/530.17 (KHTML, like Gecko) Version/4.0 Mobile Safari/530.17

Sony

Mozilla/5.0 (Linux; U; Android 2.1-update1; de-de; E10i Build/2.0.2.A.0.24) AppleWebKit/530.17 (KHTML, like Gecko) Version/4.0 Mobile Safari/530.17

my PC chorme

Mozilla/5.0 (Windows NT 5.1) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11

Internet Explorer 7 (Windows Vista) Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0)

Internet Explorer 6 (Windows XP) Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)

Internet Explorer 5.5 (Windows 2000) Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.0 )

Internet Explorer 5.5 (Windows ME) Mozilla/4.0 (compatible; MSIE 5.5; Windows 98; Win 9x 4.90)

Firefox 3.0 (Windows XP) Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.1) Gecko/2008070208 Firefox/3.0.1

Firefox 2.0 (Windows XP) Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.14) Gecko/20080404 Firefox/2.0.0.14