java-servers/servers/boe-server-all/src/main/java/com/xboe/config/WebConfig.java

package com.xboe.config;

import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.cbor.MappingJackson2CborHttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ContentNegotiationConfigurer;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

import java.util.List;

@Configuration
public class WebConfig implements WebMvcConfigurer {

    private static final Logger logger = LoggerFactory.getLogger(WebConfig.class);

    @Override
    public void configureContentNegotiation(ContentNegotiationConfigurer configurer) {
        configurer.favorParameter(true)
                .defaultContentType(MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML)
                .parameterName("mediaType")
                .mediaType("json", MediaType.APPLICATION_JSON)
                .mediaType("xml", MediaType.APPLICATION_XML);
    }

    //结果处理器
    @Bean
    public MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter(ObjectMapper objectMapper) {
        return new LoggingMappingJackson2HttpMessageConverter(objectMapper);
    }

    @Bean
    public ObjectMapper objectMapper() {
        ObjectMapper mapper = new ObjectMapper();
        mapper.registerModule(new JavaTimeModule());
        mapper.configure(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY, true);
        return mapper;
    }

    /**
     * 在默认的消息转换器基础上添加或移除某些转换器
     * 保证StringHttpMessageConverter在FastJsonHttpMessageConverter前被调用
     *
     * @param converters the list of configured converters to be extended
     */
    @Override
    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        converters.removeIf(t -> t instanceof MappingJackson2HttpMessageConverter || t instanceof MappingJackson2CborHttpMessageConverter);
        converters.add(mappingJackson2HttpMessageConverter(objectMapper()));
        for (HttpMessageConverter<?> converterLoop : converters) {
            logger.info("==######### Registered e message converter: {}", converterLoop.getClass().getName());
        }
    }

//    @Override
//    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
//        converters.add(mappingJackson2HttpMessageConverter(new ObjectMapper()));
//        for (HttpMessageConverter<?> converter : converters) {
//            logger.info("==#########Registered message converter: {}", converter.getClass().getName());
//        }
//    }
}