Java功能代码

常用代码

客户端信息

package com.egao.common.core.utils;
import eu.bitwalker.useragentutils.UserAgent;
import javax.servlet.http.HttpServletRequest;
import java.net.InetAddress;
import java.net.UnknownHostException;
/**
 * 获取客户端设备信息
 * Crated by Addis
 */
public class UserAgentGetter {
    private final UserAgent userAgent;
    private final String userAgentString;
    private final HttpServletRequest userRequest;
    public UserAgentGetter(HttpServletRequest request) {
        this.userRequest = request;
        this.userAgentString = request.getHeader("User-Agent");
        this.userAgent = UserAgent.parseUserAgentString(userAgentString);
    }
    /**
     * 获取浏览器类型
     */
    public String getBrowser() {
        if (null == userAgent) return "Unknown";
        return userAgent.getBrowser().getName();
    }
    /**
     * 获取操作系统
     */
    public String getOS() {
        if (null == userAgent) return "Unknown";
        return userAgent.getOperatingSystem().getName();
    }
    /**
     * 获取设备型号
     */
    public String getDevice() {
        if (null == userAgentString) return "Unknown";
        if (userAgentString.contains("Android")) {
            String[] str = userAgentString.split("[()]+");
            str = str[1].split("[;]");
            String[] res = str[str.length - 1].split("Build/");
            return res[0].trim();
        } else if (userAgentString.contains("iPhone")) {
            String[] str = userAgentString.split("[()]+");
            String res = "iphone" + str[1].split("OS")[1].split("like")[0];
            return res.trim();
        } else if (userAgentString.contains("iPad")) {
            return "iPad";
        } else {
            return getOS().trim();
        }
    }
    /**
     * 获取ip地址
     */
    public String getIp() {
        return getIp(userRequest);
    }
    /**
     * 获取ip地址
     */
    public static String getIp(HttpServletRequest request) {
        String ip = null;
        try {
            ip = request.getHeader("x-forwarded-for");
            if (isBlankIp(ip)) ip = request.getHeader("Proxy-Client-IP");
            if (isBlankIp(ip)) ip = request.getHeader("WL-Proxy-Client-IP");
            if (isBlankIp(ip)) ip = request.getHeader("HTTP_CLIENT_IP");
            if (isBlankIp(ip)) ip = request.getHeader("HTTP_X_FORWARDED_FOR");
            if (isBlankIp(ip)) ip = request.getRemoteAddr();
            // 多个ip获取第一个
            if (!isBlankIp(ip) && ip.length() > 15) ip = ip.split(",")[0];
        } catch (Exception e) {
            e.printStackTrace();
        }
        if ("0:0:0:0:0:0:0:1".equals(ip)) {
            try {
                ip = InetAddress.getLocalHost().getHostAddress();
            } catch (UnknownHostException e) {
                e.printStackTrace();
            }
        }
        return ip;
    }
    private static boolean isBlankIp(String ip) {
        return ip == null || ip.trim().isEmpty() || "unknown".equalsIgnoreCase(ip);
    }
}

import java.net.InetAddress;
import java.net.NetworkInterface;

// ip地址
public static void ip() throws Exception {
        InetAddress ia = null;
        try {
            ia = ia.getLocalHost();
            String localname = ia.getHostName();
            String localip = ia.getHostAddress();
            System.out.println("本机名称是：" + localname);
            System.out.println("本机的ip是 ：" + localip);
        } catch (Exception e) {
            e.printStackTrace();
        }
        InetAddress ia1 = InetAddress.getLocalHost();// 获取本地IP对象
        System.out.println("本机的MAC是 ：" + getMACAddress(ia1));
    }

    // 获取MAC地址的方法
    private static String getMACAddress(InetAddress ia) throws Exception {
        // 获得网络接口对象（即网卡），并得到mac地址，mac地址存在于一个byte数组中。
        byte[] mac = NetworkInterface.getByInetAddress(ia).getHardwareAddress();
        // 下面代码是把mac地址拼装成String
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < mac.length; i++) {
            if (i != 0) {
                sb.append("-");
            }
            // mac[i] & 0xFF 是为了把byte转化为正整数
            String s = Integer.toHexString(mac[i] & 0xFF);
            // System.out.println("--------------");
            // System.err.println(s);
            sb.append(s.length() == 1 ? 0 + s : s);
        }
        // 把字符串所有小写字母改为大写成为正规的mac地址并返回
        return sb.toString().toUpperCase();
    }