需要获取 真实的 服务器本地地址，可是 发现 ，相同的方法 在 win 下面 和 Linux 获取的地址不一样的，而且还有异常也是郁闷了。 还好百度到了：
package com.skg.crm.utils;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.URL;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
public class WebToolUtils {
public static void main(String[] args) {
try {
String ip=WebToolUtils.getLocalIP();
String nameString= getLocalHostName();
System.out.println(ip+"#####"+nameString);
}catch (Exception e) {
e.printStackTrace();
}
}
/**
* 获取本地IP地址
*
* @throws SocketException
*/
public static String getLocalIP() throws UnknownHostException, SocketException {
if (isWindowsOS()) {
return InetAddress.getLocalHost().getHostAddress();
} else {
return getLinuxLocalIp();
}
}
/**
* 判断操作系统是否是Windows
*
* @return
*/
public static boolean isWindowsOS() {
boolean isWindowsOS = false;
String osName = System.getProperty("os.name");
if (osName.toLowerCase().indexOf("windows") > -1) {
isWindowsOS = true;
}
return isWindowsOS;
}
/**
* 获取本地Host名称
*/
public static String getLocalHostName() throws UnknownHostException {
return InetAddress.getLocalHost().getHostName();
}
/**
* 获取Linux下的IP地址
*
* @return IP地址
* @throws SocketException
*/
private static String getLinuxLocalIp() throws SocketException {
String ip = "";
for (Enumeration en = NetworkInterface
.getNetworkInterfaces(); en.hasMoreElements();) {
NetworkInterface intf = en.nextElement();
String name = intf.getName();
if (!name.contains("docker") && !name.contains("lo")) {
for (Enumeration enumIpAddr = intf
.getInetAddresses(); enumIpAddr.hasMoreElements();) {
InetAddress inetAddress = enumIpAddr.nextElement();
if (!inetAddress.isLoopbackAddress()) {
String ipaddress = inetAddress.getHostAddress()
.toString();
if (!ipaddress.contains("::")
&& !ipaddress.contains("0:0:")
&& !ipaddress.contains("fe80")) {
ip = ipaddress;
}
}
}
}
}
return ip;
}
/**
* 获取用户真实IP地址，不使用request.getRemoteAddr();的原因是有可能用户使用了代理软件方式避免真实IP地址,
*
* 可是，如果通过了多级反向代理的话，X-Forwarded-For的值并不止一个，而是一串IP值，究竟哪个才是真正的用户端的真实IP呢？
* 答案是取X-Forwarded-For中第一个非unknown的有效IP字符串。
*
* 如：X-Forwarded-For：192.168.1.110, 192.168.1.120, 192.168.1.130,
* 192.168.1.100
*
* 用户真实IP为： 192.168.1.110
*
* @param request
* @return
*/
public static String getIpAddress(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.getHeader("HTTP_CLIENT_IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("HTTP_X_FORWARDED_FOR");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getRemoteAddr();
}
return ip;
}
/**
* 向指定URL发送GET方法的请求
*
* @param url
* 发送请求的URL
* @param param
* 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
* @return URL 所代表远程资源的响应结果
*/
// public static String sendGet(String url, String param) {
// String result = "";
// BufferedReader in = null;
// try {
// String urlNameString = url + "?" + param;
// URL realUrl = new URL(urlNameString);
// // 打开和URL之间的连接
// URLConnection connection = realUrl.openConnection();
// // 设置通用的请求属性
// connection.setRequestProperty("accept", "*/*");
// connection.setRequestProperty("connection", "Keep-Alive");
// connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible;
// MSIE 6.0; Windows NT 5.1;SV1)");
// // 建立实际的连接
// connection.connect();
// // 获取所有响应头字段
// Map> map = connection.getHeaderFields();
// // 遍历所有的响应头字段
// for (String key : map.keySet()) {
// System.out.println(key + "--->" + map.get(key));
// }
// // 定义 BufferedReader输入流来读取URL的响应
// in = new BufferedReader(new
// InputStreamReader(connection.getInputStream()));
// String line;
// while ((line = in.readLine()) != null) {
// result += line;
// }
// } catch (Exception e) {
// System.out.println("发送GET请求出现异常！" + e);
// e.printStackTrace();
// }
// // 使用finally块来关闭输入流
// finally {
// try {
// if (in != null) {
// in.close();
// }
// } catch (Exception e2) {
// e2.printStackTrace();
// }
// }
// return result;
// }
/**
* 向指定 URL 发送POST方法的请求
*
* @param url
* 发送请求的 URL
* @param param
* 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
* @return 所代表远程资源的响应结果
*/
public static void sendPost(String pathUrl, String name, String pwd, String phone, String content) {
// PrintWriter out = null;
// BufferedReader in = null;
// String result = "";
// try {
// URL realUrl = new URL(url);
// // 打开和URL之间的连接
// URLConnection conn = realUrl.openConnection();
// // 设置通用的请求属性
// conn.setRequestProperty("accept", "*/*");
// conn.setRequestProperty("connection", "Keep-Alive");
// conn.setRequestProperty("user-agent",
// "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
// // 发送POST请求必须设置如下两行
// conn.setDoOutput(true);
// conn.setDoInput(true);
// // 获取URLConnection对象对应的输出流
// out = new PrintWriter(conn.getOutputStream());
// // 发送请求参数
// out.print(param);
// // flush输出流的缓冲
// out.flush();
// // 定义BufferedReader输入流来读取URL的响应
// in = new BufferedReader(
// new InputStreamReader(conn.getInputStream()));
// String line;
// while ((line = in.readLine()) != null) {
// result += line;
// }
// } catch (Exception e) {
// System.out.println("发送 POST 请求出现异常！"+e);
// e.printStackTrace();
// }
// //使用finally块来关闭输出流、输入流
// finally{
// try{
// if(out!=null){
// out.close();
// }
// if(in!=null){
// in.close();
// }
// }
// catch(IOException ex){
// ex.printStackTrace();
// }
// }
// return result;
try {
// 建立连接
URL url = new URL(pathUrl);
HttpURLConnection httpConn = (HttpURLConnection) url.openConnection();
// //设置连接属性
httpConn.setDoOutput(true);// 使用 URL 连接进行输出
httpConn.setDoInput(true);// 使用 URL 连接进行输入
httpConn.setUseCaches(false);// 忽略缓存
httpConn.setRequestMethod("POST");// 设置URL请求方法
String requestString = "客服端要以以流方式发送到服务端的数据...";
// 设置请求属性
// 获得数据字节数据，请求数据流的编码，必须和下面服务器端处理请求流的编码一致
byte[] requestStringBytes = requestString.getBytes("utf-8");
httpConn.setRequestProperty("Content-length", "" + requestStringBytes.length);
httpConn.setRequestProperty("Content-Type", " application/x-www-form-urlencoded");
httpConn.setRequestProperty("Connection", "Keep-Alive");// 维持长连接
httpConn.setRequestProperty("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
httpConn.setRequestProperty("Accept-Encoding", "gzip, deflate");
httpConn.setRequestProperty("Accept-Language", "zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3");
httpConn.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:49.0) Gecko/20100101 Firefox/49.0");
httpConn.setRequestProperty("Upgrade-Insecure-Requests", "1");
httpConn.setRequestProperty("account", name);
httpConn.setRequestProperty("passwd", pwd);
httpConn.setRequestProperty("phone", phone);
httpConn.setRequestProperty("content", content);
// 建立输出流，并写入数据
OutputStream outputStream = httpConn.getOutputStream();
outputStream.write(requestStringBytes);
outputStream.close();
// 获得响应状态
int responseCode = httpConn.getResponseCode();
if (HttpURLConnection.HTTP_OK == responseCode) {// 连接成功
// 当正确响应时处理数据
StringBuffer sb = new StringBuffer();
String readLine;
BufferedReader responseReader;
// 处理响应流，必须与服务器响应流输出的编码一致
responseReader = new BufferedReader(new InputStreamReader(httpConn.getInputStream(), "utf-8"));
while ((readLine = responseReader.readLine()) != null) {
sb.append(readLine).append("\n");
}
responseReader.close();
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
/**
* 执行一个HTTP POST请求，返回请求响应的HTML
*
* @param url
* 请求的URL地址
* @param params
* 请求的查询参数,可以为null
* @return 返回请求响应的HTML
*/
public static void doPost(String url, String name, String pwd, String phone, String content) {
// 创建默认的httpClient实例.
CloseableHttpClient httpclient = HttpClients.createDefault();
// 创建httppost
HttpPost httppost = new HttpPost(url);
// 创建参数队列
List formparams = new ArrayList();
formparams.add(new BasicNameValuePair("account", name));
formparams.add(new BasicNameValuePair("passwd", pwd));
formparams.add(new BasicNameValuePair("phone", phone));
formparams.add(new BasicNameValuePair("content", content));
UrlEncodedFormEntity uefEntity;
try {
uefEntity = new UrlEncodedFormEntity(formparams, "UTF-8");
httppost.setEntity(uefEntity);
System.out.println("executing request " + httppost.getURI());
CloseableHttpResponse response = httpclient.execute(httppost);
try {
HttpEntity entity = response.getEntity();
if (entity != null) {
System.out.println("--------------------------------------");
System.out.println("Response content: " + EntityUtils.toString(entity, "UTF-8"));
System.out.println("--------------------------------------");
}
} finally {
response.close();
}
} catch (Exception e) {
e.printStackTrace();
} finally {
// 关闭连接,释放资源
try {
httpclient.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}