JAVA求教SSH项目中如何获取外来访问者的IP地址

private String getIpAddr() {

String ipAddress = null;

//ipAddress = thisgetRequest()getRemoteAddr();

ipAddress = thisgetRequest()getHeader("x-forwarded-for");

if(ipAddress == null || ipAddresslength() == 0 || "unknown"equalsIgnoreCase(ipAddress)) {

ipAddress = thisgetRequest()getHeader("Proxy-Client-IP");

}

if(ipAddress == null || ipAddresslength() == 0 || "unknown"equalsIgnoreCase(ipAddress)) {

ipAddress = thisgetRequest()getHeader("WL-Proxy-Client-IP");

}

if(ipAddress == null || ipAddresslength() == 0 || "unknown"equalsIgnoreCase(ipAddress)) {

ipAddress = thisgetRequest()getRemoteAddr();

if(ipAddressequals("127001")){

//根据网卡取本机配置的IP

InetAddress inet=null;

try {

inet = InetAddressgetLocalHost();

} catch (UnknownHostException e) {

eprintStackTrace();

}

ipAddress= inetgetHostAddress();

}

}

//对于通过多个代理的情况，第一个IP为客户端真实IP,多个IP按照','分割

if(ipAddress!=null && ipAddresslength()>15){ //""length() = 15

if(ipAddressindexOf(",")>0){

ipAddress = ipAddresssubstring(0,ipAddressindexOf(","));

}

}

return ipAddress;

}

我才用的一个项目，requestgetRemoteAddr();

不是很准确

方法如下：

方法一，使用CMD命令：

public static String getLocalIPForCMD(){

StringBuilder sb = new StringBuilder();

String command = "cmdexe /c ipconfig | findstr IPv4";

try {

Process p = RuntimegetRuntime()exec(command);

BufferedReader br = new BufferedReader(new InputStreamReader(pgetInputStream()));

String line = null;

while((line = brreadLine()) != null){

line = linesubstring(linelastIndexOf(":")+2,linelength());

sbappend(line);

}

brclose();

pdestroy();

} catch (IOException e) {

eprintStackTrace();

}

return sbtoString();

}

方法二，使用Java方法：

public static String getLocalIPForJava(){

StringBuilder sb = new StringBuilder();

try {

Enumeration<NetworkInterface> en = NetworkInterfacegetNetworkInterfaces();

while (enhasMoreElements()) {

NetworkInterface intf = (NetworkInterface) ennextElement();

Enumeration<InetAddress> enumIpAddr = intfgetInetAddresses();

while (enumIpAddrhasMoreElements()) {

InetAddress inetAddress = (InetAddress) enumIpAddrnextElement();

if (!inetAddressisLoopbackAddress() && !inetAddressisLinkLocalAddress()

&& inetAddressisSiteLocalAddress()) {

sbappend(inetAddressgetHostAddress()toString()+"\n");

}

}

}

} catch (SocketException e) { }

return sbtoString();

}

import javanet;

public class Test6 {

public static void main(String[] args) {

// TODO Auto-generated method stub

InetAddress ia=null;

try {

ia=iagetLocalHost();

String localname=iagetHostName();

String localip=iagetHostAddress();

Systemoutprintln("本机名称是："+ localname);

Systemoutprintln("本机的ip是 ："+localip);

} catch (Exception e) {

// TODO Auto-generated catch block

eprintStackTrace();

}

}

}

import javautil;

import javanet;public class getMyIP

{

public static void main(String[] args)

{

String IP = null;

String host = null;

try

{

InetAddress ia = InetAddressgetLocalHost();

host = iagetHostName();//获取计算机名字

IP= iagetHostAddress();//获取IP

}

catch(UnknownHostException e)

{

eprintStackTrace();

}

Systemoutprintln(host);

Systemoutprintln(IP);

}

}

Java编程查询IP地址归属地，可以调用淘宝提供的service查询，并且解析>package getAddressByIp;

import javaioByteArrayOutputStream;

import javaioIOException;

import javaioInputStream;

import javanet>

可以使用 InetAddressgetLocalHost()，代码如下：

import javanet;

public class App {

public static void main(String[] args) throws UnknownHostException {

InetAddress local = InetAddressgetLocalHost();

Systemoutprintln("计算机名：" + localgetHostName());

Systemoutprintln("IP：" + localgetHostAddress());

}

}

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