springboot

springboot自定义序列化的方法是什么

小亿
155
2023-12-21 08:53:29
栏目: 编程语言

在Spring Boot中自定义序列化的方法是实现org.springframework.core.serializer.Serializer接口或org.springframework.core.serializer.SmartSerializer接口。

在自定义序列化方法后,可以通过在Spring Boot的配置类中使用@Bean注解将自定义的序列化器注入到Spring容器中,并通过配置文件配置使用该序列化器。

例如,使用Jackson库自定义JSON序列化的示例代码如下:

import org.springframework.core.serializer.Serializer;
import com.fasterxml.jackson.databind.ObjectMapper;

public class JacksonJsonSerializer implements Serializer<Object> {

    private final ObjectMapper objectMapper;

    public JacksonJsonSerializer() {
        this.objectMapper = new ObjectMapper();
    }

    @Override
    public void serialize(Object object, OutputStream outputStream) throws IOException {
        objectMapper.writeValue(outputStream, object);
    }
}

然后,在Spring Boot的配置类中将该序列化器注入到Spring容器中:

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;

@Configuration
public class MyConfig {

    @Bean
    public JacksonJsonSerializer jacksonJsonSerializer() {
        return new JacksonJsonSerializer();
    }

    @Bean
    public MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter(JacksonJsonSerializer serializer) {
        MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
        converter.setObjectMapper(serializer.objectMapper);
        return converter;
    }
}

最后,在配置文件中配置使用自定义的序列化器:

spring.http.converters.preferred-json-mapper=jacksonJsonSerializer

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