「javaip查询」java查询ip地址
本篇文章给大家谈谈javaip查询，以及java查询ip地址对应的知识点，希望对各位有所帮助，不要忘了收藏本站喔。
本文目录一览：
java中，如何获取真实的IP地址？
/**
* 获取客户端ip
* @param request
* @return
*/
HttpServletRequest request = ServletActionContext.getRequest();
String address = request.getHeader("X-Forwarded-For");
if (address != null this.isIpAddress(address)) {
return address;
}
return request.getRemoteAddr();
java如何查询本机ip地址和mac地址
// 获取mac地址
public static String getMacAddress() {
try {
EnumerationNetworkInterface allNetInterfaces = NetworkInterface.getNetworkInterfaces();
byte[] mac = null;
while (allNetInterfaces.hasMoreElements()) {
NetworkInterface netInterface = (NetworkInterface) allNetInterfaces.nextElement();
if (netInterface.isLoopback() || netInterface.isVirtual() || !netInterface.isUp()) {
continue;
} else {
mac = netInterface.getHardwareAddress();
if (mac != null) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i mac.length; i++) {
sb.append(String.format("%02X%s", mac[i], (i mac.length - 1) ? "-" : ""));
}
if (sb.length() 0) {
return sb.toString();
}
}
}
}
} catch (Exception e) {
_logger.error("MAC地址获取失败", e);
}
return "";
}
// 获取ip地址
public static String getIpAddress() {
try {
EnumerationNetworkInterface allNetInterfaces = NetworkInterface.getNetworkInterfaces();
InetAddress ip = null;
while (allNetInterfaces.hasMoreElements()) {
NetworkInterface netInterface = (NetworkInterface) allNetInterfaces.nextElement();
if (netInterface.isLoopback() || netInterface.isVirtual() || !netInterface.isUp()) {
continue;
} else {
EnumerationInetAddress addresses = netInterface.getInetAddresses();
while (addresses.hasMoreElements()) {
ip = addresses.nextElement();
if (ip != null ip instanceof Inet4Address) {
return ip.getHostAddress();
}
}
}
}
} catch (Exception e) {
_logger.error("IP地址获取失败", e);
}
return "";
}
希望能帮助到你
java 怎么查看局域网的ip有哪些
点击系统桌面左下角的“开始”，然后在搜索框内输入“cmd”。
注：如果是XP系统，请依次点击“开始”再点击“运行”，接着在窗口中输入“cmd”就可以了，其它步骤相同！
在弹出的CMD命令中输入：ipconfig /all，并回车。
3
之后，我们会得到如下图的信息。
这里，我们只需要查看IPv4 地址，默认网关和DNS服务器就可以了。
如图标记的一样，IPv4 地址为我们本机的IP地址，剩余的默认网管和DNS服务器也是我们本机的默认网管和DNS地址。
Java怎样获取当前机器外网IP
java获取本机的外网ip示例：
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* 获取本机外网IP地址
* 思想是访问网站，得到返回的文本后解析出本机在外网的IP地址
* @author pieryon
*
*/
public class ExternalIpAddressFetcher {
// 外网IP提供者的网址
private String externalIpProviderUrl;
// 本机外网IP地址
private String myExternalIpAddress;
public ExternalIpAddressFetcher(String externalIpProviderUrl) {
this.externalIpProviderUrl = externalIpProviderUrl;
String returnedhtml = fetchExternalIpProviderHTML(externalIpProviderUrl);
parse(returnedhtml);
}
/**
* 从外网提供者处获得包含本机外网地址的字符串
* 从返回的字符串如下
* htmlheadtitleCurrent IP Check/title/headbodyCurrent IP Address: 123.147.226.222/body/html
* @param externalIpProviderUrl
* @return
*/
private String fetchExternalIpProviderHTML(String externalIpProviderUrl) {
// 输入流
InputStream in = null;
// 到外网提供者的Http连接
HttpURLConnection httpConn = null;
try {
// 打开连接
URL url = new URL(externalIpProviderUrl);
httpConn = (HttpURLConnection) url.openConnection();
// 连接设置
HttpURLConnection.setFollowRedirects(true);
httpConn.setRequestMethod("GET");
httpConn.setRequestProperty("User-Agent",
"Mozilla/4.0 (compatible; MSIE 6.0; Windows 2000)");
// 获取连接的输入流
in = httpConn.getInputStream();
byte[] bytes=new byte[1024];// 此大小可根据实际情况调整
// 读取到数组中
int offset = 0;
int numRead = 0;
while (offset bytes.length
(numRead=in.read(bytes, offset, bytes.length-offset)) = 0) {
offset += numRead;
}
// 将字节转化为为UTF-8的字符串
String receivedString=new String(bytes,"UTF-8");
// 返回
return receivedString;
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
in.close();
httpConn.disconnect();
} catch (Exception ex) {
ex.printStackTrace();
}
}
// 出现异常则返回空
return null;
}
/**
* 使用正则表达式解析返回的HTML文本,得到本机外网地址
* @param html
*/
private void parse(String html){
Pattern pattern=Pattern.compile("(\\d{1,3})[.](\\d{1,3})[.](\\d{1,3})[.](\\d{1,3})", Pattern.CASE_INSENSITIVE);
Matcher matcher=pattern.matcher(html);
while(matcher.find()){
myExternalIpAddress=matcher.group(0);
}
}
/**
* 得到本机外网地址,得不到则为空
* @return
*/
public String getMyExternalIpAddress() {
return myExternalIpAddress;
}
public static void main(String[] args){
ExternalIpAddressFetcher fetcher=new ExternalIpAddressFetcher("");
System.out.println(fetcher.getMyExternalIpAddress());
}
}
java IP查询方法
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http请求返回的json串，代码如下：
package getAddressByIp;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import net.sf.json.JSONObject;
public class GetAddressByIp
{
/**
*
* @param IP
* @return
*/
public static String GetAddressByIp(String IP){
String resout = "";
try{
String str = getJsonContent(""+IP);
System.out.println(str);
JSONObject obj = JSONObject.fromObject(str);
JSONObject obj2 = (JSONObject) obj.get("data");
String code = (String) obj.get("code");
if(code.equals("0")){
resout = obj2.get("country")+"--" +obj2.get("area")+"--" +obj2.get("city")+"--" +obj2.get("isp");
}else{
resout = "IP地址有误";
}
}catch(Exception e){
e.printStackTrace();
resout = "获取IP地址异常："+e.getMessage();
}
return resout;
}
public static String getJsonContent(String urlStr)
{
try
{// 获取HttpURLConnection连接对象
URL url = new URL(urlStr);
HttpURLConnection httpConn = (HttpURLConnection) url.openConnection();
// 设置连接属性
httpConn.setConnectTimeout(3000);
httpConn.setDoInput(true);
httpConn.setRequestMethod("GET");
// 获取相应码
int respCode = httpConn.getResponseCode();
if (respCode == 200)
{
return ConvertStream2Json(httpConn.getInputStream());
}
}
catch (MalformedURLException e)
{
e.printStackTrace();
}
catch (IOException e)
{
e.printStackTrace();
}
return "";
}
private static String ConvertStream2Json(InputStream inputStream)
{
String jsonStr = "";
// ByteArrayOutputStream相当于内存输出流
ByteArrayOutputStream out = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len = 0;
// 将输入流转移到内存输出流中
try
{
while ((len = inputStream.read(buffer, 0, buffer.length)) != -1)
{
out.write(buffer, 0, len);
}
// 将内存流转换为字符串
jsonStr = new String(out.toByteArray());
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
return jsonStr;
}
}
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