GeoIP Legacy Java API
This API is for the GeoIP Legacy format (dat). To read the MaxMind DB format (mmdb) used by GeoIP2, please see our GeoIP2 Java API.
Define Your Dependencies
We recommend installing this package with Maven. To do this, add the dependency to your pom.xml:
<dependency> <groupId>com.maxmind.geoip</groupId> <artifactId>geoip-api</artifactId> <version>1.3.1</version> </dependency>
mvn clean install
The jar file will be in the
IP Geolocation Usage
IP geolocation is inherently imprecise. Locations are often near the center of the population. Any location provided by a GeoIP database or web service should not be used to identify a particular address or household.
Memory Caching and Other Options
The following options can be passed as the second parameter to the
GEOIP_STANDARD- Read database from file system. Uses the least memory.
GEOIP_MEMORY_CACHE- Load database into memory. This provides faster performance but uses more memory
GEOIP_CHECK_CACHE- Check for updated database. If database has been updated, reload file handle and/or memory cache.
GEOIP_INDEX_CACHE- Cache only the most frequently accessed index portion of the database, resulting in faster lookups than GEOIP_STANDARD, but less memory usage than
GEOIP_MEMORY_CACHE. This is useful for larger databases such as GeoIP Legacy Organization and GeoIP Legacy City. Note: for GeoIP Legacy Country, Region and Netspeed databases,
GEOIP_INDEX_CACHEis equivalent to
These options may be combined. For example:
LookupService cl = new LookupService(dbfile, LookupService.GEOIP_MEMORY_CACHE | LookupService.GEOIP_CHECK_CACHE);
As of version 1.1.4 this API is thread safe.