Android 获取本地外网IP、内网IP、计算机名等信息

2022-12-30 19:12:02

一、获取本地外网IP

  1. public static String GetNetIp()
  2. {
  3. URL infoUrl = null;
  4. InputStream inStream = null;
  5. try
  6. {
  7. //http://iframe.ip138.com/ic.asp
  8. //infoUrl = new URL("http://city.ip138.com/city0.asp");
  9. infoUrl = new URL("http://iframe.ip138.com/ic.asp");
  10. URLConnection connection = infoUrl.openConnection();
  11. HttpURLConnection httpConnection = (HttpURLConnection)connection;
  12. int responseCode = httpConnection.getResponseCode();
  13. if(responseCode == HttpURLConnection.HTTP_OK)
  14. {
  15. inStream = httpConnection.getInputStream();
  16. BufferedReader reader = new BufferedReader(new InputStreamReader(inStream,"utf-8"));
  17. StringBuilder strber = new StringBuilder();
  18. String line = null;
  19. while ((line = reader.readLine()) != null)
  20. strber.append(line + "\n");
  21. inStream.close();
  22. //从反馈的结果中提取出IP地址
  23. int start = strber.indexOf("[");
  24. int end = strber.indexOf("]", start + 1);
  25. line = strber.substring(start + 1, end);
  26. return line;
  27. }
  28. }
  29. catch(MalformedURLException e) {
  30. e.printStackTrace();
  31. }
  32. catch (IOException e) {
  33. e.printStackTrace();
  34. }
  35. return null;
  36. }

二、 获取本地内网IP

  1. // 获取本地IP函数
  2. public static String getLocalIPAddress() {
  3. try {
  4. for (Enumeration<NetworkInterface> mEnumeration = NetworkInterface
  5. .getNetworkInterfaces(); mEnumeration.hasMoreElements();) {
  6. NetworkInterface intf = mEnumeration.nextElement();
  7. for (Enumeration<InetAddress> enumIPAddr = intf
  8. .getInetAddresses(); enumIPAddr.hasMoreElements();) {
  9. InetAddress inetAddress = enumIPAddr.nextElement();
  10. // 如果不是回环地址
  11. if (!inetAddress.isLoopbackAddress()) {
  12. // 直接返回本地IP地址
  13. return inetAddress.getHostAddress().toString();
  14. }
  15. }
  16. }
  17. } catch (SocketException ex) {
  18. System.err.print("error");
  19. }
  20. return null;
  21. }

三、 获取本地外网IP、内网IP、计算机名等信息

    1. /**
    2. *功能: 获取外网IP，内网IP，计算机名等信息;
    3. *
    4. *作者: jef
    5. *
    6. *时间: 20100714
    7. *
    8. *版本: v1.0.0
    9. *
    10. *
    11. *程序说明:
    12. *          通过纯真网络来获取IP，因为ip138网站有时不准。
    13. *
    14. *          运行程序时命令行参数请输入http://www.cz88.net/ip/viewip778.aspx
    15. *          等待程序运行完毕(执行时间视网络情况而定)，会在程序目录下生成一个GETIP.sys文件来输出各参数。
    16. *
    17. *          运行时如果不输入命令行参数，则默认使用http://www.cz88.net/ip/viewip778.aspx来获取IP。
    18. *
    19. *          注意,
    20. *          不输入命令行参数时获取的信息会输出到命令行，不会输出到文件。
    21. *          输入命令行参数时获取的信息则会输出到文件，不管获取IP成功与否。
    22. *
    23. *          输出信息部分内容的含义如下,
    24. *          sucess
    25. *          hostName is:MyPC
    26. *          hostAddr is:192.168.1.114
    27. *                 Foreign IP is:210.72.100.9
    28. *          Location is:江苏省苏州 长城宽带
    29. *          ......
    30. *
    31. *          第一行表示全部过程成功与否。成功输出"sucess"，否则"fail",
    32. *          第二行表示计算机名,
    33. *          第三行表示内网IP,
    34. *          第四行表示外网IP,
    35. *          第五行表示外网IP所有的可能地理位置(可信度依赖于查询的网站)。
    36. *          ......
    37. *
    38. *
    39. *使用举例:
    40. *           拷贝 \cn\mail\sendback\GetIP.class 文件到C:\Documents and Settings下。注意要保留包名的目录。
    41. *           打开命令提示行窗口,输入:
    42. *
    43. *           c:
    44. *           cd C:\Documents and Settings
    45. *           java cn.mail.sendback.GetIP http://www.cz88.net/ip/viewip778.aspx
    46. *
    47. *           等待C:\Documents and Settings目录下出现GETIP.sys文件则表示执行完毕，
    48. *           用记事本打开该文件。含义见说明部分。
    49. *
    50. */
    51. package com.soai.test;
    52. import java.io.BufferedReader;
    53. import java.io.BufferedWriter;
    54. import java.io.FileNotFoundException;
    55. import java.io.FileOutputStream;
    56. import java.io.IOException;
    57. import java.io.InputStreamReader;
    58. import java.io.OutputStream;
    59. import java.io.OutputStreamWriter;
    60. import java.net.InetAddress;
    61. import java.net.URL;
    62. import java.net.UnknownHostException;
    63. import java.util.Date;
    64. public class GetIP {
    65. /**
    66. * @param args
    67. */
    68. public static void main(String[] args){
    69. // 通过纯真网络来获取IP，因为ip138网站有时不准。
    70. // 运行程序时命令行输入:http://www.cz88.net/ip/viewip778.aspx
    71. boolean bHasNoArgs =false;
    72. if(args.length<=0) bHasNoArgs =true;
    73. StringBuffer sbFileContent =new StringBuffer();
    74. boolean bGetSuccess =true;
    75. try {
    76. InetAddress host =InetAddress.getLocalHost();
    77. String hostName =host.getHostName();
    78. String hostAddr=host.getHostAddress();
    79. String tCanonicalHostName =host.getCanonicalHostName();
    80. Date da =new Date();
    81. String osname =System.getProperty("os.name");
    82. String osversion =System.getProperty("os.version");
    83. String username =System.getProperty("user.name");
    84. String userhome =System.getProperty("user.home");
    85. String userdir =System.getProperty("user.dir");
    86. if(bHasNoArgs){
    87. System.out.println("hostName is:"+hostName);
    88. System.out.println("hostAddr is:"+hostAddr);
    89. System.out.println("Current Date is:"+da.toString());
    90. System.out.println("osname is:"+osname);
    91. System.out.println("osversion is:"+osversion);
    92. System.out.println("username is:"+username);
    93. System.out.println("userhome is:"+userhome);
    94. System.out.println("userdir is:"+userdir);
    95. }
    96. else{
    97. sbFileContent.append("hostName is:"+hostName+"\n");
    98. sbFileContent.append("hostAddr is:"+hostAddr+"\n");
    99. sbFileContent.append("Current Date is:"+da.toString()+"\n");
    100. sbFileContent.append("osname is:"+osname+"\n");
    101. sbFileContent.append("osversion is:"+osversion+"\n");
    102. sbFileContent.append("username is:"+username+"\n");
    103. sbFileContent.append("userhome is:"+userhome+"\n");
    104. sbFileContent.append("userdir is:"+userdir+"\n");
    105. }
    106. StringBuffer url =new StringBuffer();
    107. if(bHasNoArgs||args[0].equals(null)||args[0].equals("")){
    108. url.append("http://www.cz88.net/ip/viewip778.aspx");
    109. }
    110. else
    111. url.append(args[0]);
    112. StringBuffer strForeignIP =new StringBuffer("strForeignIPUnkown");
    113. StringBuffer strLocation =new StringBuffer("strLocationUnkown");
    114. if(GetIP.getWebIp(url.toString(),strForeignIP,strLocation)){
    115. if(bHasNoArgs){
    116. System.out.println("Foreign IP is:"+strForeignIP);
    117. System.out.println("Location is:"+strLocation);
    118. }
    119. else{
    120. sbFileContent.append("Foreign IP is:"+strForeignIP+"\n");
    121. sbFileContent.append("Location is:"+strLocation+"\n");
    122. }
    123. }
    124. else{
    125. if(bHasNoArgs){
    126. System.out.println("Failed to connect:"+url);
    127. }
    128. else{
    129. bGetSuccess =false;
    130. sbFileContent.append("Failed to connect:"+url+"\n");
    131. }
    132. }
    133. } catch (UnknownHostException e) {
    134. if(bHasNoArgs){
    135. e.printStackTrace();
    136. }
    137. else{
    138. bGetSuccess =false;
    139. sbFileContent.append(e.getStackTrace()+"\n");
    140. }
    141. }
    142. if(bGetSuccess)
    143. sbFileContent.insert(0,"sucess"+"\n");
    144. else
    145. sbFileContent.insert(0,"fail"+"\n");
    146. if(!bHasNoArgs) write2file(sbFileContent);
    147. }
    148. public static boolean getWebIp(String strUrl,
    149. StringBuffer strForeignIP,StringBuffer strLocation) {
    150. try {
    151. URL url = new URL(strUrl);
    152. BufferedReader br = new BufferedReader(new InputStreamReader(url.openStream()));
    153. String s = "";
    154. StringBuffer sb = new StringBuffer("");
    155. while ((s = br.readLine()) != null) {
    156. sb.append(s + "\r\n");
    157. }
    158. br.close();
    159. String webContent = "";
    160. webContent = sb.toString();
    161. if( webContent.equals(null)|| webContent.equals("") ) return false;
    162. String flagofForeignIPString ="IPMessage";
    163. int startIP = webContent.indexOf(flagofForeignIPString)+flagofForeignIPString.length()+2;
    164. int endIP = webContent.indexOf("</span>",startIP);
    165. strForeignIP.delete(0, webContent.length());
    166. strForeignIP.append(webContent.substring(startIP,endIP));
    167. String flagofLocationString ="AddrMessage";
    168. int startLoc = webContent.indexOf(flagofLocationString)+flagofLocationString.length()+2;
    169. int endLoc = webContent.indexOf("</span>",startLoc);
    170. strLocation.delete(0, webContent.length());
    171. strLocation.append(webContent.substring(startLoc,endLoc));
    172. return true;
    173. } catch (Exception e) {
    174. //e.printStackTrace();
    175. return false;
    176. }
    177. }
    178. public static void  write2file(StringBuffer content){
    179. if(content.length()<=0) return;
    180. try {
    181. FileOutputStream fos = new FileOutputStream("GETIP.sys");
    182. OutputStreamWriter osr =new OutputStreamWriter(fos);
    183. BufferedWriter bw =new BufferedWriter(osr);
    184. try {
    185. int index =0;
    186. while(index>=0){
    187. int preIndex =index;
    188. index =content.indexOf("\n", preIndex+2);
    189. if(index>0){
    190. String str =new String(content.substring(preIndex, index));
    191. bw.write(str);
    192. bw.newLine();
    193. }
    194. else{
    195. String str =new String(content.substring(preIndex, content.length()-1));
    196. bw.write(str);
    197. break;
    198. }
    199. }
    200. } catch (IOException e1) {
    201. // TODO Auto-generated catch block
    202. //e1.printStackTrace();
    203. }
    204. try {
    205. bw.close();
    206. } catch (IOException e) {
    207. // TODO Auto-generated catch block
    208. //e.printStackTrace();
    209. }
    210. } catch (FileNotFoundException e) {
    211. // TODO Auto-generated catch block
    212. //e.printStackTrace();
    213. }
    214. }
    215. }
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