diff --git a/src/main/java/com/gis3c/ol/entity/Layer.java b/src/main/java/com/gis3c/ol/entity/Layer.java
index 839369e..7409b3f 100644
--- a/src/main/java/com/gis3c/ol/entity/Layer.java
+++ b/src/main/java/com/gis3c/ol/entity/Layer.java
@@ -1,5 +1,6 @@
 package com.gis3c.ol.entity;
 
+import java.math.BigDecimal;
 import java.util.*;
 import java.util.Map;
 
@@ -13,10 +14,10 @@ public class Layer {
     private Double opacity = 1.0;
     private String source;
     private Boolean visible = Boolean.TRUE;
-    private Double[] extent;
+    private BigDecimal[] extent;
     private Integer zIndex = 0;
-    private Double maxResolution;
-    private Double minResolution;
+    private BigDecimal maxResolution;
+    private BigDecimal minResolution;
     private String type;
     private java.util.Map<String,Object> options;
     private String description;
@@ -69,11 +70,11 @@ public class Layer {
         this.visible = visible;
     }
 
-    public Double[] getExtent() {
+    public BigDecimal[] getExtent() {
         return extent;
     }
 
-    public void setExtent(Double[] extent) {
+    public void setExtent(BigDecimal[] extent) {
         this.extent = extent;
     }
 
@@ -85,19 +86,19 @@ public class Layer {
         this.zIndex = zIndex;
     }
 
-    public Double getMaxResolution() {
+    public BigDecimal getMaxResolution() {
         return maxResolution;
     }
 
-    public void setMaxResolution(Double maxResolution) {
+    public void setMaxResolution(BigDecimal maxResolution) {
         this.maxResolution = maxResolution;
     }
 
-    public Double getMinResolution() {
+    public BigDecimal getMinResolution() {
         return minResolution;
     }
 
-    public void setMinResolution(Double minResolution) {
+    public void setMinResolution(BigDecimal minResolution) {
         this.minResolution = minResolution;
     }
 
diff --git a/src/test/java/com/gis3c/spatial/App.java b/src/test/java/com/gis3c/spatial/App.java
index bef1c93..7658c20 100644
--- a/src/test/java/com/gis3c/spatial/App.java
+++ b/src/test/java/com/gis3c/spatial/App.java
@@ -30,7 +30,8 @@ public class App {
         TestService testService = context.getBean(TestService.class);
 
 
-
+        Layer layer = layerService.findeLayerById("d804360f-eb5f-4e29-94ab-fdafbf224e02");
+        System.out.println(layer.getExtent());
 
 //        Source source = sourceService.findSourceByName("cva");
 //        System.out.println(source.getOptions());
@@ -65,10 +66,10 @@ public class App {
 
 //        System.out.println(mapService.findMapsByPage(5,1));
 
-        Set<String> mapIds = new HashSet<>();
-        mapIds.add("e49eed64-433b-4637-832e-b7292a867ba1");
-        mapService.deleteMapsById(mapIds);
-        System.out.println("删除成功");
+//        Set<String> mapIds = new HashSet<>();
+//        mapIds.add("e49eed64-433b-4637-832e-b7292a867ba1");
+//        mapService.deleteMapsById(mapIds);
+//        System.out.println("删除成功");
 
 //        Map map = new Map();
 //        map.setMapId(UUID.randomUUID().toString());
diff --git a/src/test/resources/mappings/ol/LayerDao.xml b/src/test/resources/mappings/ol/LayerDao.xml
index 6dd7dac..44d0751 100644
--- a/src/test/resources/mappings/ol/LayerDao.xml
+++ b/src/test/resources/mappings/ol/LayerDao.xml
@@ -10,8 +10,8 @@
 		<result property="visible" column="visible" />
 		<result property="extent" column="extent" javaType="ObjectArray"/>
 		<result property="zIndex" column="zIndex" />
-		<result property="maxResolution" column="minResolution" />
-		<result property="minResolution" column="maxResolution" />
+		<result property="maxResolution" column="maxResolution" />
+		<result property="minResolution" column="minResolution" />
 		<result property="type" column="type" />
 		<result property="options" column="options" javaType="ObjectJSON"/>
 		<result property="description" column="description" />