简介

IMEI

IMEI（International Mobile Equipment Identity），国际移动设备身份码缩写，国际移动装备辨识码，15位数。它与每台移动电话机一一对应且全世界唯一。每移动电话机组装后都被赋予一全球唯一号码，该号码从生产到交付使用都将被制造生产厂商记录。

IMSI

国际移动用户识别码（IMSI：International Mobile Subscriber Identification 
Number），区别移动用户有效信息，储存于SIM卡。总长不超15位，同样用0~9数字。其中MCC是移动用户所属国家代号，占3位，中国MCC规定460；MNC是移动网号码，两或三位数组成，中国移动的移动网络编码（MNC）00，识别移动用户所属移动通信网；MSIN是移动用户识别码，识别某移动通信网中移动用户。

MAC

MAC（Media Access Control或Medium Access Control）地址，意译媒体访问控制，或称物理地址、硬件地址，定义网络设备位置。OSI模型第三层网络层负责IP地址，第二层数据链路层负责MAC地址。一主机有一MAC地址，而每网络位有一专属它IP地址 
注意：平板无法通IMEI标示设备，会将MAC地址作为用户唯一标识。

代码

MAC

package util;import android.annotation.SuppressLint;
import android.content.Context;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringWriter;
import java.io.Writer;
import java.net.NetworkInterface;
import java.util.Collections;
import java.util.List;/*** Created on 2018/6/20.** @desc 手机Mac地址*/
public class MacUtils {private static final String DEFAULT_MAC = "02:00:00:00:00:00";private static final String FILE_MAC = "/sys/class/net/wlan0/address";/*** Mac（默02:00:00:00:00:00）** @param context 上下文* @return mac*/@SuppressLint("HardwareIds")public static String getMacByInterfaceOrFile(Context context) {WifiManager wifiMan = (WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE);WifiInfo wifiInf = wifiMan != null ? wifiMan.getConnectionInfo() : null;if (wifiInf != null && DEFAULT_MAC.equals(wifiInf.getMacAddress())) {String result;try {result = getMacByInterface();if (result != null) {return result;} else {result = getMacByFile(wifiMan);return result;}} catch (IOException e) {LogUtils.e("Error getting mac");} catch (Exception e) {LogUtils.e("Error getting mac");}} else {if (wifiInf != null && wifiInf.getMacAddress() != null) {return wifiInf.getMacAddress();} else {return "";}}return DEFAULT_MAC;}private static String getMacByInterface() {try {List<NetworkInterface> all = Collections.list(NetworkInterface.getNetworkInterfaces());for (NetworkInterface nif : all) {if ("wlan0".equalsIgnoreCase(nif.getName())) {byte[] macBytes = nif.getHardwareAddress();if (macBytes == null) {return "";}StringBuilder res1 = new StringBuilder();for (byte b : macBytes) {res1.append(String.format("%02X:", b));}if (res1.length() > 0) {res1.deleteCharAt(res1.length() - 1);}return res1.toString();}}} catch (Exception e) {LogUtils.e("Error getting mac");}return null;}private static String getMacByFile(WifiManager wifiMan) throws Exception {String s;int wifiState = wifiMan.getWifiState();wifiMan.setWifiEnabled(true);File file = new File(FILE_MAC);FileInputStream fileInputStream = new FileInputStream(file);s = getStringFromStream(fileInputStream);fileInputStream.close();boolean enabled = WifiManager.WIFI_STATE_ENABLED == wifiState;wifiMan.setWifiEnabled(enabled);return s;}private static String getStringFromStream(InputStream inputStream) throws IOException {if (inputStream != null) {Writer writer = new StringWriter();char[] chars = new char[2048];try {Reader reader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"));int counter;while ((counter = reader.read(chars)) != -1) {writer.write(chars, 0, counter);}} finally {inputStream.close();}return writer.toString();} else {return "No Contents";}}
}