Webclient + Jackson：如何设置反序列化以将 snake_case 转换为 camelCase？

Question

我想避免在我的属性前加上 @JsonProperty("property_name") 前缀，而只是设置 Spring WebClient 生成器以将所有 snake_cases 转换为驼峰式。

这可能吗？

Answer 1

您可以为您的模型添加注释class:

@JsonNaming(PropertyNamingStrategy.SnakeCaseStrategy.class)
public class Model {
  String camelCase; //will be camel_case in json
}

Answer 2

您可以按照并只为一个模型应用配置。

或者您可以通过适当的属性:

进行全局设置

spring:
  jackson:
    property-naming-strategy: SNAKE_CASE

Answer 3

阅读 9.4.3. Customize the Jackson ObjectMapper and 10.A.4. JSON properties 以了解我们可以从配置文件中定义多少选项。在您的情况下，您需要设置：

spring.jackson.property-naming-strategy=SNAKE_CASE

如果您只想更改反序列化的配置，您需要自定义 WebClient 的创建方式。

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.PropertyNamingStrategy;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.codec.json.Jackson2JsonDecoder;
import org.springframework.web.reactive.function.client.ExchangeStrategies;
import org.springframework.web.reactive.function.client.WebClient;

@Configuration
public class WebClientConfiguration {

    @Bean
    public WebClient webClient(ObjectMapper baseConfig) {
        ObjectMapper newMapper = baseConfig.copy();
        newMapper.setPropertyNamingStrategy(PropertyNamingStrategy.SNAKE_CASE);

        ExchangeStrategies exchangeStrategies = ExchangeStrategies.builder()
                .codecs(configurer ->
                        configurer.defaultCodecs().jackson2JsonDecoder(new Jackson2JsonDecoder(newMapper)))
                .build();
        return WebClient.builder()
                .baseUrl("http://localhost:8080")
                .exchangeStrategies(exchangeStrategies)
                .build();
    }
}

参见：

How to customize SpringWebFlux WebClient JSON deserialization?

Webclient + Jackson：如何设置反序列化以将 snake_case 转换为 camelCase？

Webclient + Jackson: how to setup deserialization to convert snake_case into camelCase?

java

jackson

spring-webclient