【fix】bound 不合法不要设置bounds 减少不出图的几率

songyumeng · songyumeng · commit c17f31f7f099 · 2026-06-30T18:04:27.000+08:00
diff --git a/src/common/mapping/WebMapV2.js b/src/common/mapping/WebMapV2.js
@@ -807,6 +807,9 @@ export function createWebMapV2Extending(SuperClass, { MapManager, mapRepo, DataF
             ];
           }
         }
+        if (bounds && !this._isValidBounds(bounds)) {
+          bounds = null;
+        }
         this._addBaselayer({
           url: [requestUrl],
           layerID: layerId,
@@ -2758,6 +2761,28 @@ export function createWebMapV2Extending(SuperClass, { MapManager, mapRepo, DataF
       return coor;
     }
 
+    // 校验 bounds 是否为合法的经纬度范围(EPSG:4326)
+    // 不合法返回 false：值非数字/无穷、左>=右、下>=上、四个坐标都在 ±0.5 度内(认为退化为原点附近)、超出经纬度范围
+    _isValidBounds(bounds) {
+      if (!Array.isArray(bounds) || bounds.length !== 4) {
+        return false;
+      }
+      const [left, bottom, right, top] = bounds;
+      if (![left, bottom, right, top].every((v) => typeof v === 'number' && Number.isFinite(v))) {
+        return false;
+      }
+      if (left >= right || bottom >= top) {
+        return false;
+      }
+      if (Math.abs(left) > 180 || Math.abs(right) > 180 || Math.abs(bottom) > 90 || Math.abs(top) > 90) {
+        return false;
+      }
+      if (Math.abs(left) < 0.5 && Math.abs(right) < 0.5 && Math.abs(bottom) < 0.5 && Math.abs(top) < 0.5) {
+        return false;
+      }
+      return true;
+    }
+
     _getMapCenter(mapInfo) {
       // center
       let center = mapInfo.center && [mapInfo.center.x, mapInfo.center.y];
