根據IP獲取城市-Java調用“ip2region”地址庫實例

根據IP獲取城市-Java調用“ip2region”地址庫實例-媽媽再也不用擔心我的ip地址定位啦

 

• ip2region

準確率99.9%的ip地址定位庫，0.0x毫秒級查詢，數據庫文件大小隻有1.5M，提供了java,php,c,python,nodejs,golang查詢綁定和Binary,B樹,內存三種查詢算法

github地址：https://github.com/lionsoul2014/ip2region

• 下載v1.3版本：https://github.com/lionsoul2014/ip2region/releases/tag/v1.3-release

解壓目錄如下圖：

• 新建java項目，導入binding/java下的代碼，並複製”data/ip2region.db”到“src目錄

• 創建“IPUtil”.java ,內容參考”org.lionsoul.ip2region.test.TestSearcher.java“
   

  maven倉庫地址
  <dependency>
      <groupId>org.lionsoul</groupId>
      <artifactId>ip2region</artifactId>
      <version>1.7.2</version>
  </dependency>

  gradle
  compile group: 'org.lionsoul', name: 'ip2region', version: '1.7.2'

   

1. package com.xx;
2.  
3. import java.io.File;
4. import java.lang.reflect.Method;
5.  
6. import org.lionsoul.ip2region.DataBlock;
7. import org.lionsoul.ip2region.DbConfig;
8. import org.lionsoul.ip2region.DbSearcher;
9. import org.lionsoul.ip2region.Util;
10.  
11. public class IPUtil {
12.  
13. public static String getCityInfo(String ip){
14.  
15. //db
16. String dbPath = IPUtil.class.getResource("/ip2region.db").getPath();
17.  
18. File file = new File(dbPath);
19. if ( file.exists() == false ) {
20. System.out.println("Error: Invalid ip2region.db file");
21. }
22.  
23. //查詢算法
24. int algorithm = DbSearcher.BTREE_ALGORITHM; //B-tree
25. //DbSearcher.BINARY_ALGORITHM //Binary
26. //DbSearcher.MEMORY_ALGORITYM //Memory
27. try {
28. DbConfig config = new DbConfig();
29. DbSearcher searcher = new DbSearcher(config, dbPath);
30.  
31. //define the method
32. Method method = null;
33. switch ( algorithm )
34. {
35. case DbSearcher.BTREE_ALGORITHM:
36. method = searcher.getClass().getMethod("btreeSearch", String.class);
37. break;
38. case DbSearcher.BINARY_ALGORITHM:
39. method = searcher.getClass().getMethod("binarySearch", String.class);
40. break;
41. case DbSearcher.MEMORY_ALGORITYM:
42. method = searcher.getClass().getMethod("memorySearch", String.class);
43. break;
44. }
45.  
46. DataBlock dataBlock = null;
47. if ( Util.isIpAddress(ip) == false ) {
48. System.out.println("Error: Invalid ip address");
49. }
50.  
51. dataBlock = (DataBlock) method.invoke(searcher, ip);
52.  
53. return dataBlock.getRegion();
54.  
55. } catch (Exception e) {
56. e.printStackTrace();
57. }
58.  
59. return null;
60. }
61.  
62.  
63. public static void main(String[] args) throws Exception{
64. System.err.println(getCityInfo("220.248.12.158"));
65. }
66. }

運行結果如下：