Android 获取本地外网IP、内网IP、计算机名等信息

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. }