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c5aef59534
| Author | SHA256 | Date | |
|---|---|---|---|
| c5aef59534 | |||
| 7b200dba40 |
@ -13,7 +13,7 @@ import java.util.Locale;
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/**
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/**
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* JTS Point 反序列化器 - 将 JSON 反序列化为 Point
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* JTS Point 反序列化器 - 将 JSON 反序列化为 Point
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* 支持多种 JSON 格式
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* 支持 type、longitude、latitude 三个字段的格式
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*/
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*/
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@Slf4j
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@Slf4j
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public class PointDeserializer extends JsonDeserializer<Point> {
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public class PointDeserializer extends JsonDeserializer<Point> {
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@ -21,7 +21,7 @@ public class PointDeserializer extends JsonDeserializer<Point> {
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private final GeometryFactory geometryFactory = new GeometryFactory();
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private final GeometryFactory geometryFactory = new GeometryFactory();
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@Override
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@Override
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public Point deserialize(JsonParser p, DeserializationContext context) throws IOException {
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public Point deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
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JsonNode node = p.getCodec().readTree(p);
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JsonNode node = p.getCodec().readTree(p);
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if (node.isNull()) {
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if (node.isNull()) {
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@ -29,47 +29,48 @@ public class PointDeserializer extends JsonDeserializer<Point> {
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}
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}
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try {
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try {
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Point result = null;
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// 格式1: 三字段格式 {"type": "point", "longitude": 116.3974, "latitude": 39.9093}
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if (node.isObject() && node.has("type") &&
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(node.has("longitude") || node.has("latitude"))) {
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return parseFromThreeFields(node);
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}
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// 格式1: 自定义格式 {"type": "point", "coordinates": [lng, lat]}
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// 格式2: 自定义格式 {"type": "point", "coordinates": [lng, lat]}
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if (node.isObject() && node.has("type")) {
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if (node.isObject() && node.has("type")) {
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String type = node.get("type").asText().toLowerCase(Locale.ROOT);
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String type = node.get("type").asText().toLowerCase(Locale.ROOT);
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if ("point".equals(type)) {
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if ("point".equals(type)) {
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result = parseFromCustomFormat(node);
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return parseFromCustomFormat(node);
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}
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}
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}
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}
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// 格式2: GeoJSON 格式 {"type": "Point", "coordinates": [lng, lat]}
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// 格式3: GeoJSON 格式 {"type": "Point", "coordinates": [lng, lat]}
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else if (node.isObject() && node.has("type")) {
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else if (node.isObject() && node.has("type")) {
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String type = node.get("type").asText();
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String type = node.get("type").asText();
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if ("Point".equals(type)) {
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if ("Point".equals(type)) {
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result = parseFromGeoJSON(node);
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return parseFromGeoJSON(node);
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}
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}
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}
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}
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// 格式3: 坐标数组格式 [lng, lat]
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// 格式4: 坐标数组格式 [lng, lat]
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else if (node.isArray()) {
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else if (node.isArray()) {
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result = parseFromArray(node);
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return parseFromArray(node);
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}
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}
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// 格式4: 对象格式但没有 type 字段,尝试解析 coordinates 或直接解析 x,y
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// 格式5: 简化的三字段格式(没有type)
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else if (node.isObject()) {
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else if (node.isObject() && (node.has("longitude") || node.has("latitude"))) {
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result = parseFromObject(node);
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return parseFromLongitudeLatitude(node);
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}
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}
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// 格式5: WKT 字符串格式 "POINT(lng lat)"
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// 格式6: WKT 字符串格式 "POINT(lng lat)"
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else if (node.isTextual()) {
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else if (node.isTextual()) {
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result = parseFromWKT(node.asText());
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return parseFromWKT(node.asText());
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}
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}
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if (result == null) {
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throw new IOException("""
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throw new IOException("""
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不支持的 Point JSON 格式,支持的格式包括:
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不支持的 Point JSON 格式,支持的格式包括:
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1. 三字段格式: {"type":"point","longitude":116.3974,"latitude":39.9093}
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1. 自定义格式: {"type":"point","coordinates":[lng,lat]}
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2. 自定义格式: {"type":"point","coordinates":[lng,lat]}
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2. GeoJSON格式: {"type":"Point","coordinates":[lng,lat]}
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3. GeoJSON格式: {"type":"Point","coordinates":[lng,lat]}
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3. 坐标数组: [lng,lat]
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4. 坐标数组: [lng,lat]
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4. 简单对象: {"lng":116.3974,"lat":39.9093} 或 {"x":116.3974,"y":39.9093}
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5. 简化格式: {"longitude":116.3974,"latitude":39.9093}
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5. WKT字符串: "POINT(lng lat)"
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6. WKT字符串: "POINT(lng lat)"
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6. PostgreSQL点格式: "(lng,lat)\"""");
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7. PostgreSQL点格式: "(lng,lat)" """);
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}
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return result;
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} catch (Exception e) {
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} catch (Exception e) {
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log.error("!!! PointDeserializer 反序列化失败 !!!");
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log.error("!!! PointDeserializer 反序列化失败 !!!");
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@ -84,6 +85,31 @@ public class PointDeserializer extends JsonDeserializer<Point> {
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return Point.class;
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return Point.class;
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}
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}
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/**
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* 解析三字段格式:{"type":"point","longitude":116.3974,"latitude":39.9093}
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*/
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private Point parseFromThreeFields(JsonNode node) throws IOException {
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String type = node.get("type").asText();
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if (!"point".equalsIgnoreCase(type)) {
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throw new IOException("type 字段必须是 'point',当前是: " + type);
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}
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JsonNode lngNode = node.get("longitude");
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JsonNode latNode = node.get("latitude");
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if (lngNode == null || latNode == null) {
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throw new IOException("longitude 或 latitude 字段缺失");
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}
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try {
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double longitude = lngNode.asDouble();
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double latitude = latNode.asDouble();
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return geometryFactory.createPoint(new Coordinate(longitude, latitude));
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} catch (NumberFormatException e) {
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throw new IOException("longitude/latitude 格式错误", e);
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}
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}
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/**
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/**
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* 解析自定义格式:{"type":"point","coordinates":[lng,lat]}
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* 解析自定义格式:{"type":"point","coordinates":[lng,lat]}
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*/
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*/
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@ -116,37 +142,23 @@ public class PointDeserializer extends JsonDeserializer<Point> {
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}
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}
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/**
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/**
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* 解析对象格式:{"lng":116.3974,"lat":39.9093} 或 {"x":116.3974,"y":39.9093}
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* 解析简化格式:{"longitude":116.3974,"latitude":39.9093}
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*/
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*/
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private Point parseFromObject(JsonNode node) throws IOException {
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private Point parseFromLongitudeLatitude(JsonNode node) throws IOException {
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// 尝试 lng/lat 格式
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JsonNode lngNode = node.get("longitude");
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if (node.has("lng") && node.has("lat")) {
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JsonNode latNode = node.get("latitude");
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try {
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double lng = node.get("lng").asDouble();
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if (lngNode == null || latNode == null) {
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double lat = node.get("lat").asDouble();
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throw new IOException("longitude 或 latitude 字段缺失");
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return geometryFactory.createPoint(new Coordinate(lng, lat));
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} catch (NumberFormatException e) {
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throw new IOException("lng/lat 格式错误: " + node, e);
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}
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}
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}
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// 尝试 x/y 格式
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try {
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if (node.has("x") && node.has("y")) {
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double longitude = lngNode.asDouble();
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try {
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double latitude = latNode.asDouble();
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double x = node.get("x").asDouble();
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return geometryFactory.createPoint(new Coordinate(longitude, latitude));
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double y = node.get("y").asDouble();
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} catch (NumberFormatException e) {
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return geometryFactory.createPoint(new Coordinate(x, y));
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throw new IOException("longitude/latitude 格式错误", e);
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} catch (NumberFormatException e) {
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throw new IOException("x/y 格式错误: " + node, e);
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}
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}
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}
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// 尝试 coordinates 格式
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if (node.has("coordinates")) {
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return parseCoordinates(node.get("coordinates"));
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}
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throw new IOException("对象格式不支持: " + node);
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}
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}
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/**
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/**
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@ -159,24 +171,24 @@ public class PointDeserializer extends JsonDeserializer<Point> {
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try {
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try {
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wktString = wktString.trim();
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wktString = wktString.trim();
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// 支持 PostgreSQL 点格式转换:(x,y) -> POINT(x y)
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// 支持 PostgreSQL 点格式转换:(x,y) -> POINT(x y)
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if (wktString.startsWith("(") && wktString.endsWith(")")) {
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if (wktString.startsWith("(") && wktString.endsWith(")")) {
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wktString = convertPostgresPointToWKT(wktString);
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wktString = convertPostgresPointToWKT(wktString);
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}
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}
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// 确保是有效的 WKT
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// 确保是有效的 WKT
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if (!wktString.toUpperCase().startsWith("POINT")) {
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if (!wktString.toUpperCase().startsWith("POINT")) {
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wktString = "POINT(" + wktString + ")";
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wktString = "POINT(" + wktString + ")";
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}
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}
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WKTReader reader = new WKTReader(geometryFactory);
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WKTReader reader = new WKTReader(geometryFactory);
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Geometry geometry = reader.read(wktString);
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Geometry geometry = reader.read(wktString);
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if (!(geometry instanceof Point)) {
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if (!(geometry instanceof Point)) {
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throw new IOException("WKT 字符串不是有效的 Point: " + wktString);
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throw new IOException("WKT 字符串不是有效的 Point: " + wktString);
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}
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}
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return (Point) geometry;
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return (Point) geometry;
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} catch (Exception e) {
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} catch (Exception e) {
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throw new IOException("WKT 格式解析失败: " + wktString, e);
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throw new IOException("WKT 格式解析失败: " + wktString, e);
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@ -202,7 +214,7 @@ public class PointDeserializer extends JsonDeserializer<Point> {
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try {
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try {
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double lng = coordinatesNode.get(0).asDouble();
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double lng = coordinatesNode.get(0).asDouble();
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double lat = coordinatesNode.get(1).asDouble();
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double lat = coordinatesNode.get(1).asDouble();
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return geometryFactory.createPoint(new Coordinate(lng, lat));
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return geometryFactory.createPoint(new Coordinate(lng, lat));
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} catch (NumberFormatException e) {
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} catch (NumberFormatException e) {
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throw new IOException("坐标格式错误: " + coordinatesNode, e);
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throw new IOException("坐标格式错误: " + coordinatesNode, e);
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@ -215,17 +227,17 @@ public class PointDeserializer extends JsonDeserializer<Point> {
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private String convertPostgresPointToWKT(String pgPointString) {
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private String convertPostgresPointToWKT(String pgPointString) {
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// PostgreSQL 格式: (x,y) 或 (x, y)
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// PostgreSQL 格式: (x,y) 或 (x, y)
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// WKT 格式: POINT(x y)
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// WKT 格式: POINT(x y)
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String cleaned = pgPointString
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String cleaned = pgPointString
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.replaceAll("\\s+", "") // 移除所有空格
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.replaceAll("\\s+", "") // 移除所有空格
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.replace("(", "")
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.replace("(", "")
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.replace(")", "");
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.replace(")", "");
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String[] coords = cleaned.split(",");
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String[] coords = cleaned.split(",");
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if (coords.length >= 2) {
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if (coords.length >= 2) {
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return "POINT(" + coords[0] + " " + coords[1] + ")";
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return "POINT(" + coords[0] + " " + coords[1] + ")";
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}
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}
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return pgPointString; // 无法转换,返回原值
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return pgPointString; // 无法转换,返回原值
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}
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}
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}
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}
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@ -14,18 +14,18 @@ import java.util.Locale;
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/**
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/**
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* JTS Point 序列化器 - 将 Point 序列化为 JSON
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* JTS Point 序列化器 - 将 Point 序列化为 JSON
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* 生成一致的 JSON 格式
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* 输出 type、longitude、latitude 三个字段
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*/
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*/
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@Slf4j
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@Slf4j
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public class PointSerializer extends JsonSerializer<Point> {
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public class PointSerializer extends JsonSerializer<Point> {
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private static final DecimalFormat COORD_FORMAT = new DecimalFormat("#.##########",
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private static final DecimalFormat COORD_FORMAT = new DecimalFormat("#.##########",
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DecimalFormatSymbols.getInstance(Locale.US));
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DecimalFormatSymbols.getInstance(Locale.US));
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private final WKTWriter wktWriter = new WKTWriter();
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private final WKTWriter wktWriter = new WKTWriter();
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@Override
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@Override
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public void serialize(Point point, JsonGenerator gen, SerializerProvider serializers)
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public void serialize(Point point, JsonGenerator gen, SerializerProvider serializers)
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throws IOException {
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throws IOException {
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if (point == null) {
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if (point == null) {
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gen.writeNull();
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gen.writeNull();
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@ -35,22 +35,18 @@ public class PointSerializer extends JsonSerializer<Point> {
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try {
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try {
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// 获取坐标
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// 获取坐标
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Coordinate coordinate = point.getCoordinate();
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Coordinate coordinate = point.getCoordinate();
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if (coordinate == null || Double.isNaN(coordinate.x) || Double.isNaN(coordinate.y)) {
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if (coordinate == null || Double.isNaN(coordinate.x) || Double.isNaN(coordinate.y)) {
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log.warn("警告: 点坐标无效: {}", coordinate);
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log.warn("警告: 点坐标无效: {}", coordinate);
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gen.writeNull();
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gen.writeNull();
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return;
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return;
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}
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}
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// 序列化为自定义格式(与 PolygonSerializer 格式一致)
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// 序列化为三字段格式:type、longitude、latitude
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gen.writeStartObject();
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gen.writeStartObject();
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gen.writeStringField("type", "point");
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gen.writeStringField("type", "point");
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gen.writeNumberField("longitude", formatCoordinate(coordinate.x));
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gen.writeArrayFieldStart("coordinates");
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gen.writeNumberField("latitude", formatCoordinate(coordinate.y));
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gen.writeNumber(formatCoordinate(coordinate.x));
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gen.writeNumber(formatCoordinate(coordinate.y));
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gen.writeEndArray();
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gen.writeEndObject();
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gen.writeEndObject();
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} catch (Exception e) {
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} catch (Exception e) {
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@ -58,7 +54,7 @@ public class PointSerializer extends JsonSerializer<Point> {
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log.error("错误信息: {}", e.getMessage());
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log.error("错误信息: {}", e.getMessage());
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// 尝试备用序列化方式
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// 尝试备用序列化方式
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try {
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try {
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serializeAsSimpleObject(point, gen);
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serializeAsAlternativeFormat(point, gen);
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} catch (Exception e2) {
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} catch (Exception e2) {
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throw new IOException("Point 序列化失败: " + e.getMessage(), e);
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throw new IOException("Point 序列化失败: " + e.getMessage(), e);
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}
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}
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@ -79,9 +75,9 @@ public class PointSerializer extends JsonSerializer<Point> {
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}
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}
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|
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/**
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/**
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||||||
* 备用序列化方式:序列化为简单对象格式
|
* 备用序列化方式:序列化为 coordinates 数组格式
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||||||
*/
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*/
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private void serializeAsSimpleObject(Point point, JsonGenerator gen) throws IOException {
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private void serializeAsAlternativeFormat(Point point, JsonGenerator gen) throws IOException {
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if (point == null || point.isEmpty()) {
|
if (point == null || point.isEmpty()) {
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gen.writeNull();
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gen.writeNull();
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return;
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return;
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@ -89,16 +85,21 @@ public class PointSerializer extends JsonSerializer<Point> {
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|||||||
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|
||||||
try {
|
try {
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||||||
Coordinate coordinate = point.getCoordinate();
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Coordinate coordinate = point.getCoordinate();
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|
||||||
// 方式1:简单对象格式 {"lng":116.3974,"lat":39.9093}
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// 方式1:coordinates 数组格式
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gen.writeStartObject();
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gen.writeStartObject();
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gen.writeNumberField("lng", coordinate.x);
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gen.writeStringField("type", "point");
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gen.writeNumberField("lat", coordinate.y);
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gen.writeArrayFieldStart("coordinates");
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gen.writeNumber(coordinate.x);
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||||||
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gen.writeNumber(coordinate.y);
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||||||
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gen.writeEndArray();
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||||||
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||||||
gen.writeEndObject();
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gen.writeEndObject();
|
||||||
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|
||||||
} catch (Exception e) {
|
} catch (Exception e) {
|
||||||
log.error("简单对象序列化失败: {}", e.getMessage());
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log.error("备用序列化失败: {}", e.getMessage());
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||||||
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||||||
// 最终备用:序列化为 WKT 字符串
|
// 最终备用:序列化为 WKT 字符串
|
||||||
try {
|
try {
|
||||||
String wkt = wktWriter.write(point);
|
String wkt = wktWriter.write(point);
|
||||||
@ -127,7 +128,7 @@ public class PointSerializer extends JsonSerializer<Point> {
|
|||||||
}
|
}
|
||||||
|
|
||||||
Coordinate coordinate = point.getCoordinate();
|
Coordinate coordinate = point.getCoordinate();
|
||||||
return "(" + getFormattedCoordinateString(coordinate.x) +
|
return "(" + getFormattedCoordinateString(coordinate.x) +
|
||||||
"," + getFormattedCoordinateString(coordinate.y) + ")";
|
"," + getFormattedCoordinateString(coordinate.y) + ")";
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
Loading…
x
Reference in New Issue
Block a user