其他
老大说,网上这种获取真实IP地址的方法不对,我不信...
public String getIpAddr(HttpServletRequest request) {
String ip = request.getHeader("x-forwarded-for");
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("Proxy-Client-IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("WL-Proxy-Client-IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getRemoteAddr();
}
return ip;
}
是的,你搜索到的“java获取真实IP地址”大多都是如此。但是,以上代码真
的对吗?
"x-forwarded-for">
"Proxy-Client-IP">
"WL-Proxy-Client-IP">
request.getRemoteAddr()
$.ajax({
type : "GET",
headers : {"X-Forwarded-For":randomIp,"WL-Proxy-Client-IP":randomIp},
contentType : 'application/x-www-form-urlencoded;charset=utf-8',
url : url,
data:params,
dataType : "text",
success : function(data) {
count++;
console.log("时间:【"+new Date()+"】 执行成功:【"+count+"】次:"+data);
if(max>0){
setTimeout(function wait(){
console.log("等待"+(timeWait)+"ms ...");
vote(max,getRandomNum(maxWait,minWait));
},timeWait);
}
}
}
#Nginx 设置
location ~ ^/static {
proxy_pass ....;
proxy_set_header X-Forward-For $remote_addr ;
}
这段配置是在前端Nginx反向代理上的(其他反向代理请自行搜索),这段配置
那么为什么不直接使用使用request.getRemoteAddr()这个方法呢?
public class IpUtils {
public static final String _255 = "(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)";
public static final Pattern pattern = Pattern.compile("^(?:" + _255 + "\\.){3}" + _255 + "$");
public static String longToIpV4(long longIp) {
int octet3 = (int) ((longIp >> 24) % 256);
int octet2 = (int) ((longIp >> 16) % 256);
int octet1 = (int) ((longIp >> 8) % 256);
int octet0 = (int) ((longIp) % 256);
return octet3 + "." + octet2 + "." + octet1 + "." + octet0;
}
public static long ipV4ToLong(String ip) {
String[] octets = ip.split("\\.");
return (Long.parseLong(octets[0]) << 24) + (Integer.parseInt(octets[1]) << 16)
+ (Integer.parseInt(octets[2]) << 8) + Integer.parseInt(octets[3]);
}
public static boolean isIPv4Private(String ip) {
long longIp = ipV4ToLong(ip);
return (longIp >= ipV4ToLong("10.0.0.0") && longIp <= ipV4ToLong("10.255.255.255"))
|| (longIp >= ipV4ToLong("172.16.0.0") && longIp <= ipV4ToLong("172.31.255.255"))
|| longIp >= ipV4ToLong("192.168.0.0") && longIp <= ipV4ToLong("192.168.255.255");
}
public static boolean isIPv4Valid(String ip) {
return pattern.matcher(ip).matches();
}
public static String getIpFromRequest(HttpServletRequest request) {
String ip;
boolean found = false;
if ((ip = request.getHeader("x-forwarded-for")) != null) {
StrTokenizer tokenizer = new StrTokenizer(ip, ",");
while (tokenizer.hasNext()) {
ip = tokenizer.nextToken().trim();
if (isIPv4Valid(ip) && !isIPv4Private(ip)) {
found = true;
break;
}
}
}
if (!found) {
ip = request.getRemoteAddr();
}
return ip;
}
}
location ~ ^/static {
proxy_pass ....;
proxy_set_header X-Forward-For $remote_addr ;
}
这就是差距啊~~~
作为新手,我终于明白了在IDEA中如何配置和部署Web项目?
老大,你为什么在代码中要求我们使用LocalDateTime而不是Date?
醉了,竟然这么多人连Ftp、Ftps与Sftp的差异都不知道...