Spring Boot 1.5.4在json響應中篩選出空值

Question

我正在使用Spring Boot 1.5.4版本。我正在使用spring-ws getWebServiceTemplate()進行web服務調用。 SOAP響應對這些字段有很多空值。

我想過濾掉JSON響應中的空值。以下方法無似乎工作：

1. 在application.properties設置屬性：

spring.jackson.default-property-inclusion:NON_NULL` 

在配置類設置它使用Jackson2ObjectMapperBuilder：

@Bean 
    public Jackson2ObjectMapperBuilder objectMapperBuilder() { 
     Jackson2ObjectMapperBuilder builder = new Jackson2ObjectMapperBuilder();   
     builder.serializationInclusion(JsonInclude.Include.NON_NULL); 
     builder.serializationInclusion(JsonInclude.Include.NON_EMPTY); 
     return builder; 
    } 

請指教。

LVA

Answer 1

我使用Spring引導1.5.6.RELEASE版本，你可以參考一下 customize-the-jackson-objectmapper

下面的代碼工作：

@SpringBootApplication 
    public class Application { 

     @Bean 
     public Jackson2ObjectMapperBuilder objectMapperBuilder() { 
      Jackson2ObjectMapperBuilder builder = new Jackson2ObjectMapperBuilder(); 
      builder.serializationInclusion(JsonInclude.Include.NON_NULL); 
      return builder; 
     } 

     public static void main(String[] args) { 
      SpringApplication.run(DbeeApiApplication.class, args); 
     } 
    } 

或者你也可以從MappingJackson2HttpMessageConverter過濾，例如：

@Configuration 
class WebMvcConfiguration extends WebMvcConfigurationSupport { 
    @Override 
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) { 
     for(HttpMessageConverter<?> converter: converters) { 
      if(converter instanceof MappingJackson2HttpMessageConverter) { 
       ObjectMapper mapper = ((MappingJackson2HttpMessageConverter)converter).getObjectMapper(); 
       mapper.setSerializationInclusion(Include.NON_NULL); 
      } 
     } 
    } 
}