diff --git a/.gitignore b/.gitignore
index 0c0a974e..892d190a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -32,3 +32,5 @@ build/
 ### VS Code ###
 .vscode/
 *.log
+
+GeoLite2-City/
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index 2134e8d8..95cf34b5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -102,6 +102,21 @@
             <artifactId>commons-io</artifactId>
             <version>2.11.0</version>
         </dependency>
+        <dependency>
+
+            <groupId>com.maxmind.geoip2</groupId>
+            <artifactId>geoip2</artifactId>
+            <version>2.15.0</version>
+
+        </dependency>
+
+        <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-compress -->
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-compress</artifactId>
+            <version>1.23.0</version>
+        </dependency>
+
         <!-- https://mvnrepository.com/artifact/com.google.ortools/ortools-java -->
         <dependency>
             <groupId>com.google.ortools</groupId>
diff --git a/src/main/java/cn/lihongjie/coal/ip/IpQueryService.java b/src/main/java/cn/lihongjie/coal/ip/IpQueryService.java
new file mode 100644
index 00000000..f9c0ec5d
--- /dev/null
+++ b/src/main/java/cn/lihongjie/coal/ip/IpQueryService.java
@@ -0,0 +1,141 @@
+package cn.lihongjie.coal.ip;
+
+import com.maxmind.geoip2.DatabaseReader;
+import jakarta.annotation.PostConstruct;
+import lombok.SneakyThrows;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
+import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
+import org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream;
+import org.apache.commons.io.FileUtils;
+import org.apache.commons.lang3.StringUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.core.env.Environment;
+import org.springframework.stereotype.Service;
+
+import java.io.*;
+import java.net.InetAddress;
+import java.net.URL;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+@Service
+@Slf4j
+public class IpQueryService {
+
+    @Autowired
+    Environment environment;
+    @Value("${geolite2.url}")
+    private String geolite2DownloadUrl;
+    private DatabaseReader reader;
+
+    @SneakyThrows
+    @PostConstruct
+    public void init() {
+
+        log.info("开始初始化GeoLite2-City本地数据库");
+
+        Path dbPath = Path.of("./GeoLite2-City/GeoLite2-City.mmdb");
+
+        Path dbDir = dbPath.getParent();
+        if (Files.notExists(dbDir)) {
+
+            Files.createDirectories(dbDir);
+        }
+
+        if (Files.exists(dbPath)) {
+
+            log.info("发现默认数据库文件: {}", dbPath);
+
+        } else if (StringUtils.isNotEmpty(environment.getProperty("geolite2.city.path"))) {
+
+            dbPath = Path.of(environment.getProperty("geolite2.city.path"));
+
+            log.info("发现环境变量数据库文件: {}", dbPath);
+
+
+        } else {
+
+            log.info("没有找到数据库文件, 下载数据库文件");
+
+            File downloadPath = dbPath.getParent().resolve("GeoLite2-City.tar.gz").toFile();
+            FileUtils.copyURLToFile(
+                    new URL(geolite2DownloadUrl),
+                    downloadPath,
+                    10 * 1000,
+                    30 * 1000);
+
+
+            TarArchiveInputStream tarIn = new TarArchiveInputStream(
+                    new GzipCompressorInputStream(
+                            new BufferedInputStream(
+                                    new FileInputStream(downloadPath))));
+
+
+            TarArchiveEntry tarEntry = tarIn.getNextTarEntry();
+            Path newDbFile = null;
+            // tarIn is a TarArchiveInputStream
+            while (tarEntry != null) {// create a file with the same name as the tarEntry
+                File destPath = dbDir.resolve(tarEntry.getName()).toFile();
+                log.info(destPath.toString());
+
+                if (tarEntry.isDirectory()) {
+                    destPath.mkdirs();
+                } else {
+                    destPath.createNewFile();
+                    if (destPath.getName().endsWith("mmdb")) {
+                        newDbFile = destPath.toPath();
+                    }
+                    //byte [] btoRead = new byte[(int)tarEntry.getSize()];
+                    byte[] btoRead = new byte[1024];
+                    //FileInputStream fin
+                    //  = new FileInputStream(destPath.getCanonicalPath());
+                    BufferedOutputStream bout =
+                            new BufferedOutputStream(new FileOutputStream(destPath));
+                    int len = 0;
+
+                    while ((len = tarIn.read(btoRead)) != -1) {
+                        bout.write(btoRead, 0, len);
+                    }
+
+                    bout.close();
+                    btoRead = null;
+
+                }
+                tarEntry = tarIn.getNextTarEntry();
+            }
+            tarIn.close();
+
+
+            if (newDbFile != null) {
+
+                Files.move(newDbFile, dbPath);
+            }
+        }
+
+
+        reader = new DatabaseReader.Builder(dbPath.toFile()).build();
+
+
+    }
+
+
+    @SneakyThrows
+    public Object query(String ipaddr) {
+
+
+        if (reader != null) {
+            InetAddress ipAddress = InetAddress.getByName(ipaddr);
+
+
+            return reader.city(ipAddress);
+        }
+
+
+        return null;
+
+
+    }
+
+}
diff --git a/src/main/java/cn/lihongjie/coal/log/SysLog.java b/src/main/java/cn/lihongjie/coal/log/SysLog.java
new file mode 100644
index 00000000..6bcd08ea
--- /dev/null
+++ b/src/main/java/cn/lihongjie/coal/log/SysLog.java
@@ -0,0 +1,12 @@
+package cn.lihongjie.coal.log;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+@Retention(RetentionPolicy.RUNTIME)
+@Documented
+public @interface SysLog {
+
+    String msg();
+}
diff --git a/src/main/resources/application.properties b/src/main/resources/application.properties
deleted file mode 100644
index 8b137891..00000000
--- a/src/main/resources/application.properties
+++ /dev/null
@@ -1 +0,0 @@
-
diff --git a/src/main/resources/application.yaml b/src/main/resources/application.yaml
new file mode 100644
index 00000000..fecad03a
--- /dev/null
+++ b/src/main/resources/application.yaml
@@ -0,0 +1,2 @@
+geolite2:
+  url: 'https://download.maxmind.com/app/geoip_download?edition_id=GeoLite2-City&license_key=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&suffix=tar.gz'
\ No newline at end of file