输出的json 含有下划线

mis-service/main/java/bc/mm/mis/core/bean/Country.java

@@ -1,6 +1,7 @@
 package bc.mm.mis.core.bean;
 
 import com.alibaba.fastjson.annotation.JSONField;
+import com.fasterxml.jackson.annotation.JsonProperty;
 
 import javax.persistence.*;
 
@@ -14,13 +15,14 @@ public class Country {
     private String name;
 
     @Column(name = "country_code")
-    @JSONField(name = "country_code")
+    @JsonProperty("country_code")
+    //@JSONField(name = "country_code")
     private String countryCode;
 
     private Integer order;
 
     @Column(name = "en_name")
-    @JSONField (name = "en_name")
+    @JsonProperty("en_name")
     private String enName;
 
     public Integer getId() {
@@ -47,6 +49,7 @@ public class Country {
         this.name = name;
     }
 
+    @JSONField(name = "country_code")
     public String getCountryCode() {
         return countryCode;
     }