Java中的Wifi信息
如何在Java中获取附近wifi路由器的MAC地址、SSID和信号强度?最好是系统独立的,如果不是Windows。要获取Mac地址,需要查询ARP缓存。这不是琐碎的和依赖于系统的Java中的Wifi信息,java,wifi,Java,Wifi,如何在Java中获取附近wifi路由器的MAC地址、SSID和信号强度?最好是系统独立的,如果不是Windows。要获取Mac地址,需要查询ARP缓存。这不是琐碎的和依赖于系统的 更多信息:我真的不认为有任何独立于系统的方法可以从Java中了解这一点 在Windows上,您应该能够使用s来实现这一点,但您很可能需要一些JNI来访问它们。我知道这是一个非常老的问题,但您可以在Windows中使用netsh命令,使用java提取wifi信息。这是我写的一篇关于这个的博客 Java不允许我们直接获取这
更多信息:我真的不认为有任何独立于系统的方法可以从Java中了解这一点
在Windows上,您应该能够使用s来实现这一点,但您很可能需要一些JNI来访问它们。我知道这是一个非常老的问题,但您可以在Windows中使用netsh命令,使用java提取wifi信息。这是我写的一篇关于这个的博客 Java不允许我们直接获取这些低级信息。因此,我在java内部运行命令行和netsh命令,以提取这些信息。下面是我为此实现的类。请注意,这仅适用于windows
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
*
* @author Rajind
*/
public class Extractor {
public static String NOT_SET = "NOT_SET";
public static boolean isEnabled(){
try {
String state;
ProcessBuilder builder = new ProcessBuilder(
"cmd.exe", "/c", "netsh interface show interface \"Wi-Fi\"");
builder.redirectErrorStream(true);
Process p = builder.start();
BufferedReader r = new BufferedReader(new InputStreamReader(p.getInputStream()));
String line;
while ((line = r.readLine())!=null) {
//line = r.readLine();
if (line.contains("Administrative state")){
state = line.split("\\s+")[3];
//System.out.println(state);
state = state.toLowerCase();
if(state.equals("enabled")){
return true;
}else{
return false;
}
}
}
} catch (IOException ex) {
Logger.getLogger(Extractor.class.getName()).log(Level.SEVERE, null, ex);
}
return false;
}
public static boolean isConnected(){
try {
String state;
ProcessBuilder builder = new ProcessBuilder(
"cmd.exe", "/c", "netsh interface show interface \"Wi-Fi\"");
builder.redirectErrorStream(true);
Process p = builder.start();
BufferedReader r = new BufferedReader(new InputStreamReader(p.getInputStream()));
String line;
while ((line = r.readLine())!=null) {
//line = r.readLine();
if (line.contains("Connect state")){
state = line.split("\\s+")[3];
// System.out.println(state);
state = state.toLowerCase();
if(state.equals("connected")){
return true;
}else{
return false;
}
}
}
} catch (IOException ex) {
Logger.getLogger(Extractor.class.getName()).log(Level.SEVERE, null, ex);
}
return false;
}
public static String getConnectedSSID(){
String ssid = NOT_SET;
try {
ProcessBuilder builder = new ProcessBuilder(
"cmd.exe", "/c", "netsh wlan show interfaces");
builder.redirectErrorStream(true);
Process p = builder.start();
BufferedReader r = new BufferedReader(new InputStreamReader(p.getInputStream()));
String line;
while ((line = r.readLine())!=null) {
//line = r.readLine();
if (line.contains("SSID")){
ssid = line.split("\\s+")[3];
// System.out.println(ssid);
return ssid;
}
}
} catch (IOException ex) {
Logger.getLogger(Extractor.class.getName()).log(Level.SEVERE, null, ex);
}
return ssid;
}
public static String[] getListOfSSIDs(){
String [] ssid_List;
String ssid;
ArrayList<String> arr = new ArrayList<>();
try {
ProcessBuilder builder = new ProcessBuilder(
"cmd.exe", "/c", "netsh wlan show networks");
builder.redirectErrorStream(true);
Process p = builder.start();
BufferedReader r = new BufferedReader(new InputStreamReader(p.getInputStream()));
String line;
while ((line = r.readLine())!=null) {
//line = r.readLine();
if (line.contains("SSID")){
ssid = line.split("\\s+")[3];
//System.out.println(ssid);
arr.add(ssid);
}
}
} catch (IOException ex) {
Logger.getLogger(Extractor.class.getName()).log(Level.SEVERE, null, ex);
}
ssid_List = new String[arr.size()];
arr.toArray(ssid_List);
return ssid_List;
}
public static String getIP(){
String ip = NOT_SET;
try {
ProcessBuilder builder = new ProcessBuilder(
"cmd.exe", "/c", "netsh interface ip show addresses \"Wi-Fi\"");
builder.redirectErrorStream(true);
Process p = builder.start();
BufferedReader r = new BufferedReader(new InputStreamReader(p.getInputStream()));
String line;
while ((line = r.readLine())!=null) {
//line = r.readLine();
if (line.contains("IP Address")){
ip = line.split("\\s+")[3];
//System.out.println(ip);
return ip;
}
}
} catch (IOException ex) {
Logger.getLogger(Extractor.class.getName()).log(Level.SEVERE, null, ex);
}
return ip;
}
public static String getSubnetMask(){
String sb = NOT_SET;
try {
ProcessBuilder builder = new ProcessBuilder(
"cmd.exe", "/c", "netsh interface ip show addresses \"Wi-Fi\"");
builder.redirectErrorStream(true);
Process p = builder.start();
BufferedReader r = new BufferedReader(new InputStreamReader(p.getInputStream()));
String line;
while ((line = r.readLine())!=null) {
//line = r.readLine();
if (line.contains("Subnet Prefix")){
sb = line.split("\\s+")[5];
sb = sb.substring(0, sb.length() - 1);
//System.out.println(sb);
return sb;
}
}
} catch (IOException ex) {
Logger.getLogger(Extractor.class.getName()).log(Level.SEVERE, null, ex);
}
return sb;
}
public static String getBroadcast(){
String subnetMask = getSubnetMask();
String ip = getIP();
String []arrSubnetMask = subnetMask.split("\\.");
String []arrIP = ip.split("\\.");
int []networkAddress = new int[4];
int [] broadcastAddress = new int[4];
String broadcast = "";
for(int i=0; i< 4; i++){
networkAddress[i] = Integer.parseInt(arrIP[i]) & Integer.parseInt(arrSubnetMask[i]);
//System.out.println(networkAddress[i]);
}
for(int i=0; i< 4; i++){
//broadcastAddress[i] = networkAddress[i] | (~Integer.parseInt(arrSubnetMask[i]) & 0xff);
//System.out.println(broadcastAddress[i]);
broadcast = broadcast + "." + (networkAddress[i] | (~Integer.parseInt(arrSubnetMask[i]) & 0xff));
}
// System.out.println(broadcast.substring(1));
//mask AND ip you get network address
//Invert Mask OR Network Address you get broadcast
return broadcast.substring(1);
}
}
导入java.io.BufferedReader;
导入java.io.IOException;
导入java.io.InputStreamReader;
导入java.util.ArrayList;
导入java.util.logging.Level;
导入java.util.logging.Logger;
/**
*
*@作者拉金德
*/
公共类提取器{
公共静态字符串NOT_SET=“NOT_SET”;
公共静态布尔值isEnabled(){
试一试{
字符串状态;
ProcessBuilder=新的ProcessBuilder(
“cmd.exe”、“/c”、“netsh界面显示界面\“Wi-Fi\”);
builder.redirectErrorStream(true);
进程p=builder.start();
BufferedReader r=新的BufferedReader(新的InputStreamReader(p.getInputStream());
弦线;
而((line=r.readLine())!=null){
//line=r.readLine();
if(第行包含(“管理状态”)){
state=line.split(“\\s+”)[3];
//System.out.println(状态);
state=state.toLowerCase();
if(state.equals(“enabled”)){
返回true;
}否则{
返回false;
}
}
}
}捕获(IOEX异常){
Logger.getLogger(Extractor.class.getName()).log(Level.SEVERE,null,ex);
}
返回false;
}
公共静态布尔值未连接(){
试一试{
字符串状态;
ProcessBuilder=新的ProcessBuilder(
“cmd.exe”、“/c”、“netsh界面显示界面\“Wi-Fi\”);
builder.redirectErrorStream(true);
进程p=builder.start();
BufferedReader r=新的BufferedReader(新的InputStreamReader(p.getInputStream());
弦线;
而((line=r.readLine())!=null){
//line=r.readLine();
if(行包含(“连接状态”)){
state=line.split(“\\s+”)[3];
//System.out.println(状态);
state=state.toLowerCase();
if(state.equals(“connected”)){
返回true;
}否则{
返回false;
}
}
}
}捕获(IOEX异常){
Logger.getLogger(Extractor.class.getName()).log(Level.SEVERE,null,ex);
}
返回false;
}
公共静态字符串getConnectedSSID(){
字符串ssid=未设置;
试一试{
ProcessBuilder=新的ProcessBuilder(
“cmd.exe”、“/c”、“netsh wlan显示接口”);
builder.redirectErrorStream(true);
进程p=builder.start();
BufferedReader r=新的BufferedReader(新的InputStreamReader(p.getInputStream());
弦线;
而((line=r.readLine())!=null){
//line=r.readLine();
if(第行包含(“SSID”)){
ssid=line.split(\\s+)[3];
//系统输出打印项次(ssid);
返回ssid;
}
}
}捕获(IOEX异常){
Logger.getLogger(Extractor.class.getName()).log(Level.SEVERE,null,ex);
}
返回ssid;
}
公共静态字符串[]getListOfSSIDs(){
字符串[]ssid_列表;
字符串ssid;
ArrayList arr=新的ArrayList();
试一试{
ProcessBuilder=新的ProcessBuilder(
“cmd.exe”、“/c”、“netsh wlan show networks”);
builder.redirectErrorStream(true);
进程p=builder.start();
BufferedReader r=新的BufferedReader(新的InputStreamReader(p.getInputStream());
弦线;
而((line=r.readLine())!=null){
//line=r.readLine();
if(第行包含(“SSID”)){
ssid=line.split(\\s+)[3];
//系统输出打印项次(ssid);
arr.add(ssid);
}
}
}捕获(IOEX异常){
Logger.getLogger(Extractor.class.getName()).log(Level.SEVERE,null,ex);
}
ssid_List=新字符串[arr.size()];
到达目的地(ssid_列表);
返回ssid_列表;
}
公共静态字符串getIP(){
字符串ip=未设置;
试一试{
ProcessBuilder=新的ProcessBuilder(
“cmd.exe”、“/c”、“netsh接口ip显示地址\“Wi-Fi\”);
builder.redirectErrorStream(true);
进程p=builder.start();
BufferedReader r=新的BufferedReader(新的InputStreamReader(p.getInputStream());
弦线;
而((line=r.readLine())!=null){
//line=r.readLine();
如果(第行包含(“IP地址”)){
ip=line.split(\\s+)[3];
//System.out.p