ObjectMapper 빈 셋팅 추가

build.gradle

@@ -36,6 +36,7 @@ dependencies {
     //geometry
     implementation 'com.fasterxml.jackson.core:jackson-databind'
     implementation 'org.locationtech.jts.io:jts-io-common:1.20.0'
+    implementation 'org.locationtech.jts:jts-core:1.19.0'
 
     //  QueryDSL JPA
     implementation 'com.querydsl:querydsl-jpa:5.0.0:jakarta'

src/main/java/com/kamco/cd/kamcoback/common/utils/geometry/GeometryDeserializer.java

@@ -0,0 +1,37 @@
+package com.kamco.cd.kamcoback.common.utils.geometry;
+
+import com.fasterxml.jackson.core.JacksonException;
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.databind.DeserializationContext;
+import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
+import org.locationtech.jts.geom.Geometry;
+import org.locationtech.jts.io.geojson.GeoJsonReader;
+import org.springframework.util.StringUtils;
+
+import java.io.IOException;
+
+public class GeometryDeserializer<T extends Geometry> extends StdDeserializer<T> {
+
+    public GeometryDeserializer(Class<T> targetType) {
+        super(targetType);
+    }
+
+    // TODO: test code
+    @SuppressWarnings("unchecked")
+    @Override
+    public T deserialize(JsonParser jsonParser, DeserializationContext deserializationContext)
+        throws IOException, JacksonException {
+        String json = jsonParser.readValueAsTree().toString();
+
+        if (!StringUtils.hasText(json)) {
+            return null;
+        }
+
+        try {
+            GeoJsonReader reader = new GeoJsonReader();
+            return (T) reader.read(json);
+        } catch (Exception e) {
+            throw new IllegalArgumentException("Failed to deserialize GeoJSON into Geometry", e);
+        }
+    }
+}

src/main/java/com/kamco/cd/kamcoback/common/utils/geometry/GeometrySerializer.java

@@ -0,0 +1,31 @@
+package com.kamco.cd.kamcoback.common.utils.geometry;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.databind.SerializerProvider;
+import com.fasterxml.jackson.databind.ser.std.StdSerializer;
+import org.locationtech.jts.geom.Geometry;
+import org.locationtech.jts.io.geojson.GeoJsonWriter;
+
+import java.io.IOException;
+import java.util.Objects;
+
+public class GeometrySerializer<T extends Geometry> extends StdSerializer<T> {
+
+    // TODO: test code
+    public GeometrySerializer(Class<T> targetType) {
+        super(targetType);
+    }
+
+    @Override
+    public void serialize(T geometry, JsonGenerator jsonGenerator, SerializerProvider serializerProvider)
+        throws IOException {
+        if (Objects.nonNull(geometry)) {
+            // default: 8자리 강제로 반올림시킴. 16자리로 늘려줌
+            GeoJsonWriter writer = new GeoJsonWriter(16);
+            String json = writer.write(geometry);
+            jsonGenerator.writeRawValue(json);
+        } else {
+            jsonGenerator.writeNull();
+        }
+    }
+}

src/main/java/com/kamco/cd/kamcoback/config/WebConfig.java

@@ -0,0 +1,33 @@
+package com.kamco.cd.kamcoback.config;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.module.SimpleModule;
+import com.kamco.cd.kamcoback.common.utils.geometry.GeometryDeserializer;
+import com.kamco.cd.kamcoback.common.utils.geometry.GeometrySerializer;
+import org.locationtech.jts.geom.Geometry;
+import org.locationtech.jts.geom.Point;
+import org.locationtech.jts.geom.Polygon;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
+
+@Configuration
+public class WebConfig {
+
+    @Bean
+    public ObjectMapper objectMapper() {
+        SimpleModule module = new SimpleModule();
+        module.addSerializer(Geometry.class, new GeometrySerializer<>(Geometry.class));
+        module.addDeserializer(Geometry.class, new GeometryDeserializer<>(Geometry.class));
+
+        module.addSerializer(Polygon.class, new GeometrySerializer<>(Polygon.class));
+        module.addDeserializer(Polygon.class, new GeometryDeserializer<>(Polygon.class));
+
+        module.addSerializer(Point.class, new GeometrySerializer<>(Point.class));
+        module.addDeserializer(Point.class, new GeometryDeserializer<>(Point.class));
+
+        return Jackson2ObjectMapperBuilder.json()
+                .modulesToInstall(module)
+                .build();
+    }
+}