Update JacksonConfig.java

mall-portal/src/main/java/com/macro/mall/portal/config/JacksonConfig.java

@@ -21,25 +21,12 @@ public class JacksonConfig {
     @ConditionalOnMissingBean(ObjectMapper.class)
     public ObjectMapper jacksonObjectMapper(Jackson2ObjectMapperBuilder builder) {
         ObjectMapper objectMapper = builder.createXmlMapper(false).build();
-
         // 通过该方法对mapper对象进行设置，所有序列化的对象都将按该规则进行系列化
         // Include.ALWAYS 默认
         // Include.NON_DEFAULT 属性为默认值不序列化
         // Include.NON_EMPTY 属性为空（""）或者为NULL都不序列化，返回的json是没有这个字段的
         // Include.NON_NULL 属性为NULL的字段不序列化
         objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
-
-        // 字段保留，将null值转为""
-//        objectMapper.getSerializerProvider().setNullValueSerializer(new JsonSerializer<Object>()
-//        {
-//            @Override
-//            public void serialize(Object o, JsonGenerator jsonGenerator,
-//                                  SerializerProvider serializerProvider)
-//                    throws IOException, JsonProcessingException
-//            {
-//                jsonGenerator.writeString("");
-//            }
-//        });
         return objectMapper;
     }
 }