我尝试在春季启动时使用GeoLite2-City.mmdb来获取位置数据。为此,我在配置文件中创建了一个像这样的bean:
@Bean
public static synchronized DatabaseReader mmdbReader() throws IOException {
if ( reader != null ) {
return reader;
}
ResourceLoader resourceLoader = new DefaultResourceLoader();
Resource resource = resourceLoader.getResource("classpath:static/mmdb/GeoLite2-City.mmdb");
InputStream database = resource.getInputStream();
reader = new DatabaseReader.Builder(database).fileMode(com.maxmind.db.Reader.FileMode.MEMORY)
.withCache(new CHMCache()).build();
return reader;
}
我还创建了一个util函数来检索这样的位置:
public static GeoLocation getLocation(HttpServletRequest request, DatabaseReader databaseReader) throws IOException, GeoIp2Exception{
if(request.getRemoteAddr().equals("0:0:0:0:0:0:0:1") || request.getRemoteAddr().equals("127.0.0.1")) {
return new GeoLocation("localhost", "Redmond", "USA", 47.673988, -122.121513);
}
InetAddress ipAddress = InetAddress.getByName(request.getRemoteAddr());
CityResponse response = databaseReader.city(ipAddress);
Country country = response.getCountry();
City city = response.getCity();
Location location = response.getLocation();
return new GeoLocation(ipAddress.toString(), city.getName(), country.getName(), location.getLatitude(), location.getLongitude());
}
但是,每次我部署应用程序时,都会出现此错误
Caused by: java.lang.OutOfMemoryError: Java heap space
at java.util.Arrays.copyOf(Arrays.java:3236)
at java.io.ByteArrayOutputStream.grow(ByteArrayOutputStream.java:118)
at java.io.ByteArrayOutputStream.ensureCapacity(ByteArrayOutputStream.java:93)
at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:153)
at com.maxmind.db.BufferHolder.<init>(BufferHolder.java:64)
at com.maxmind.db.Reader.<init>(Reader.java:89)
at com.maxmind.geoip2.DatabaseReader.<init>(DatabaseReader.java:64)
at com.maxmind.geoip2.DatabaseReader.<init>(DatabaseReader.java:54)
at com.maxmind.geoip2.DatabaseReader$Builder.build(DatabaseReader.java:160)
at com.microsoft.apie.configuration.ApplicationConfiguration.mmdbReader(ApplicationConfiguration.java:104)
我的Java设置是:
-Xms512m -Xmx2048m
你能帮忙吗?
最佳答案
我通过这样做解决了这个问题:
一个。我从jar中删除了文件GeoLite2-City.mmdb,并将其放在与jar相同的文件夹中
b。我重构了这个方法:
@Bean
public static synchronized DatabaseReader mmdbReader() throws IOException {
if ( reader != null ) {
return reader;
}
/*ResourceLoader resourceLoader = new DefaultResourceLoader();
Resource resource = resourceLoader.getResource("classpath:static/mmdb/GeoLite2-Country.mmdb");
InputStream database = resource.getInputStream();
*/
FileSystemResource resource = new FileSystemResource("/path/to/file/GeoLite2-City.mmdb");
reader = new DatabaseReader.Builder(resource.getFile()).fileMode(com.maxmind.db.Reader.FileMode.MEMORY_MAPPED)
.withCache(new CHMCache()).build();
return reader;
}
C。重新包装该应用程序,它可以正常工作!
感谢Strelok的建议
关于java - Maxmind DatabaseReader Java堆空间,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/59557001/