@JsonIgnoreProperties(ignoreUnknown = false)在Spring 4.2.0和更高版本中不起作用

@JsonIgnoreProperties(ignoreUnknown = false)在spring 4.2.0和spring的更高版本中不起作用.但是它正在使用4.0.4和4.0.1.
我正在使用Spring 4.2.8,并且使用了Jackson依赖项

<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.6.3</version>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-core</artifactId>
    <version>2.6.3</version>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-annotations</artifactId>
    <version>2.6.3</version>
</dependency>

如果我发送带有无效字段的json请求,则它被接受为有效请求.但是它应该给出错误的请求作为响应.
例如：如果我上课

public class Student{ 
    private String id; 
    private String name; 
}

如果发送有效的对应json请求,它应该像

{ 
   "id": "123", 
   "name": "test" 
}

但是即使我发送带有无效字段(如下所示)的json请求,它也仍然可以接受.

{ 
    "id": "123", 
    "name": "test", 
    "anyinvalidkey": "test" 
}

但是它应该给出错误的请求作为回应

解决方法:

基于Aarya答案的基于注释的解决方案可以通过以下方式完成：

@Configuration
public class Config implements InitializingBean {

    @Autowired
    private RequestMappingHandlerAdapter converter;

    @Override
    public void afterPropertiesSet() throws Exception {
        configureJacksonToFailOnUnknownProperties();
    }

    private void configureJacksonToFailOnUnknownProperties() {
        MappingJackson2HttpMessageConverter httpMessageConverter = converter.getMessageConverters().stream()
                .filter(mc -> mc.getClass().equals(MappingJackson2HttpMessageConverter.class))
                .map(mc -> (MappingJackson2HttpMessageConverter)mc)
                .findFirst()
                .get();

        httpMessageConverter.getObjectMapper().enable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
    }
}

标签：jackson2,spring,spring-mvc,jackson-dataformat-xml
来源： https://codeday.me/bug/20191112/2023547.html