/**
* 判斷所有的IP地址
* @param IP
* @return
*/
public String validIPAddressAll(String IP) {
if (!IP.contains(".") && !IP.contains(":")) {
return "Neither";
}
//如果是IPV4
if (IP.contains(".")) {
if (IP.endsWith(".")) {
return "Neither";
}
String[] arr = IP.split("\.");
if (arr.length != 4) {
return "Neither";
}
for (int i = 0; i < 4; i++) {
if (arr[i].length() == 0 || arr[i].length() > 3) {
return "Neither";
}
for (int j = 0; j < arr[i].length(); j++) {
if (arr[i].charAt(j) >= '0' && arr[i].charAt(j) <= '9') {
continue;
}
return "Neither";
}
if (Integer.valueOf(arr[i]) > 255 || (arr[i].length() >= 2 && String.valueOf(arr[i]).startsWith("0"))) {
return "Neither";
}
}
return "IPv4";
}//如果是IPV4
//如果是IPV6
if (IP.contains(":")) {
if (IP.endsWith(":") && !IP.endsWith("::")) {
return "Neither";
}
//如果包含多個“::”，一個IPv6地址中只能出現一個“::”
if (IP.indexOf("::") != -1 && IP.indexOf("::", IP.indexOf("::") + 2) != -1) {
return "Neither";
}
//如果含有一個“::”
if (IP.contains("::")) {
String[] arr = IP.split(":");
if (arr.length > 7 || arr.length < 1) {//"1::"是最短的字符串
return "Neither";
}
for (int i = 0; i < arr.length; i++) {
if (arr[i].equals("")) {
continue;
}
if (arr[i].length() > 4) {
return "Neither";
}
for (int j = 0; j < arr[i].length(); j++) {
if ((arr[i].charAt(j) >= '0' && arr[i].charAt(j) <= '9') || (arr[i].charAt(j) >= 'A' && arr[i].charAt(j) <= 'F')
|| (arr[i].charAt(j) >= 'a' && arr[i].charAt(j) <= 'f')) {
continue;
}
return "Neither";
}
}
return "IPv6";
}
//如果不含有“::”
if (!IP.contains("::")) {
String[] arr = IP.split(":");
if (arr.length != 8) {
return "Neither";
}
for (int i = 0; i < arr.length; i++) {
if (arr[i].length() > 4) {
return "Neither";
}
for (int j = 0; j < arr[i].length(); j++) {
if ((arr[i].charAt(j) >= '0' && arr[i].charAt(j) <= '9') || (arr[i].charAt(j) >= 'A' && arr[i].charAt(j) <= 'F')
|| (arr[i].charAt(j) >= 'a' && arr[i].charAt(j) <= 'f')) {
continue;
}
return "Neither";
}
}
return "IPv6";
}
}//如果是IPV6
return "Neither";
}
System.out.println(object.validIPAddressAll("172.16.254.1"));//IPv4
System.out.println(object.validIPAddressAll("1e1.4.5.6"));//Neither
System.out.println(object.validIPAddressAll("12..33.4"));//Neither
System.out.println(object.validIPAddressAll("1212.132123.33434.41221"));//Neither
System.out.println(object.validIPAddressAll("2001:0db8:85a3:0:0:8A2E:0370:7334:"));//Neither
System.out.println(object.validIPAddressAll("2001:0db8:85a3:000:0:8A2E:0370:7334"));//IPv6
System.out.println(object.validIPAddressAll("2001:0db8:85a3:000:0:8A2E:0370:73d34"));//Neither
System.out.println(object.validIPAddressAll("::"));//Neither
System.out.println(object.validIPAddressAll("::1"));//IPv6
System.out.println(object.validIPAddressAll("：：1"));//Neither
System.out.println(object.validIPAddressAll("123::566::ae4"));//Neither
System.out.println(object.validIPAddressAll("2001:0db8:85a3:000:0:8A2E::"));//IPv6
System.out.println(object.validIPAddressAll("2001:0db8:85a3:vcsd:0:8A2E::"));//Neither
以上基于jdk1.8
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版權聲明：本文為CSDN博主「二十六畫生的博客」的原創文章，遵循 CC 4.0 BY-SA 版權協議，轉載請附上原文出處鏈接及本聲明。
原文鏈接：https://blog.csdn.net/u010002184/article/details/93179294
