SpringBoot添加FastJson消息转换器自用

SpringBoot添加FastJson消息转换器（自用）

同时处理跨域问题

/**
 * JSON数据转换器，用于转换返回消息的格式
 * @author dav
 * @date 2018/9/11 19:30
 */
public class JsonConverter {

    /**
     * FastJson消息转换器
     *
     * @return
     */
    public static HttpMessageConverter fastConverter() {
        // 定义一个convert转换消息的对象
        FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();
        // 添加FastJson的配置信息
        FastJsonConfig fastJsonConfig = new FastJsonConfig();
        // 默认转换器
        fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat,
                SerializerFeature.WriteNullNumberAsZero,
                SerializerFeature.MapSortField,
                SerializerFeature.WriteNullStringAsEmpty,
                SerializerFeature.disableCircularReferenceDetect,
                SerializerFeature.WriteDateUseDateFormat,
                SerializerFeature.WriteNullListAsEmpty);
        fastJsonConfig.setCharset(Charset.forName("UTF-8"));
        // 处理中文乱码问题
        List<MediaType> fastMediaTypes = new ArrayList<>();
        fastMediaTypes.add(MediaType.APPLICATION_JSON_UTF8);
        fastConverter.setSupportedMediaTypes(fastMediaTypes);
        // 在convert中添加配置信息
        fastConverter.setFastJsonConfig(fastJsonConfig);

        return fastConverter;
    }
}

@Configuration
public class MyWebMvcConfig implements WebMvcConfigurer {

    //跨域处理
    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**")
                .allowedOriginPatterns("*")
                .allowedMethods("GET", "HEAD", "POST", "PUT", "DELETE", "OPTIONS")
                .allowCredentials(true)
                .maxAge(3600)
                .allowedHeaders("*");
    }

    @Override
    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        //保留原有converter,把新增fastConverter插入集合头,保证优先级
        converters.add(0, JsonConverter.fastConverter());
    }
}