作者Lordaeron (Terry)
站內java
標題Re: [問題] JSP有沒有辦法得知clinet端的網路卡卡號
時間Tue Nov 27 21:48:39 2007
※ 引述《hpbrother (黑皮)》之銘言：
: 請問各位
: JSP有沒有辦法得知clinet的網路卡卡號
沒直接的方法, JSP 本身不做這件事
Java 預設的package 也不做這件事
但轉個彎, 是可以的
http://forum.java.sun.com/thread.jspa?threadID=615562&messageID=3424234
ajmasx
Posts:98
Registered: 10/21/03
I came across a way, but you need to note that
- it requires access to comand line tool (arp)
- it only works on a LAN
- it is not guaranteed to work every time
Also, I haven't included the ProcessOutputHandler class, which
just reads an input stream and places the text into a string buffer,
until the stream is closed. The ping is important, since without it
the likelyhood of arp knowing the address is reduced. I wouldn't
consider this 'industrial strength'.
/**
* Tested to work with results from ARP command under Solaris,
Linux, MS-Windows
* Note it does not always return a Mac address,
even if the host exists. This represents more of
* a best 'effort' solution.
*/
private String getMacAddress ( String host )
throws UnknownHostException, IOException, InterruptedException
{
String macAddress = null;
InetAddress hostAddress = InetAddress.getByName( host );
String resultLine = callArpTool ( hostAddress.getHostAddress() );
if ( resultLine == null )
{
return null;
}
if ( resultLine.indexOf("\n") > -1 )
{
String[] lines = resultLine.split("\n");
resultLine = lines[lines.length -1];
}
if ( resultLine.indexOf("--") > -1 ||
resultLine.indexOf("unknown host") > -1 )
{
return null;
}
int idx = -1;
if ( resultLine.indexOf( '-' ) > -1 )
{
idx = resultLine.indexOf( '-' ) - 2;
}
else if ( resultLine.indexOf( ':' ) > -1 )
{
idx = resultLine.indexOf( ':' ) - 2;
}
int endIdx = resultLine.length()-1;
if ( resultLine.indexOf(' ',idx+1) > -1 )
{
endIdx = resultLine.indexOf(' ',idx+1);
}
macAddress = resultLine.substring(idx,endIdx);
return macAddress;
}
private String callArpTool ( String ipAddress ) throws IOException,
InterruptedException
{
String result = null;
/* samples:
//solaris
result = "motako (10.1.12.79) at 0:e:a6:b5:70:80";
result = "arp: motakox: unknown host";
//linux
result = "Address HWtype HWaddress
Flags Mask Iface\n"+
"whyme.xxxxxxxxxxxxxxx.c ether 00:11:D8:DF:2B:9C C eth2";
result = "batoo.yyyyyy.org (70.55.60.9) -- no entry";
//windows
result = " 56 3: 10.1.12.203 00-11-d8-df-2b-9c
dynamic";
result = " 2 12:Interface: 10.1.12.134 --- 0x50003";
*/
if ( System.getProperty("os.name").toLowerCase().startsWith("windows") )
{
return callArpToolWindows( ipAddress );
}
return callArpToolDefault( ipAddress );
}
private String callArpToolWindows ( String ipAddress ) throws IOException, InterruptedException
{
String[] cmdArray = null;
cmdArray = new String[] { "ping", ipAddress };
Runtime.getRuntime().exec( cmdArray ).waitFor();
cmdArray = new String[] { "arp", "-a" };
StringBuilder stdOut = new StringBuilder();
Process proc = Runtime.getRuntime().exec( cmdArray );
new ProcessOutputHandler(stdOut,proc.getInputStream(),2001);
proc.waitFor();
String[] parts = stdOut.toString().split("\n");
for ( String part : parts )
{
if ( part.indexOf(ipAddress) > -1 )
{
return part;
}
}
return null;
}
private String callArpToolDefault ( String ipAddress )
throws IOException, InterruptedException
{
String[] cmdArray = null;
cmdArray = new String[] { "ping", ipAddress };
Runtime.getRuntime().exec( cmdArray ).waitFor();
cmdArray = new String[] { "arp", ipAddress };
StringBuilder stdOut = new StringBuilder();
Process proc = Runtime.getRuntime().exec( cmdArray );
new ProcessOutputHandler(stdOut,proc.getInputStream(),2001);
proc.waitFor();
return stdOut.toString();
}
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