package com.whyc.config; import org.springframework.context.annotation.Configuration; import org.springframework.http.converter.ByteArrayHttpMessageConverter; import org.springframework.http.converter.HttpMessageConverter; import org.springframework.web.servlet.config.annotation.EnableWebMvc; import org.springframework.web.servlet.config.annotation.WebMvcConfigurer; import java.util.List; @Configuration public class WebConfig implements WebMvcConfigurer { @Override public void extendMessageConverters(List> converters) { converters.add(new ByteArrayHttpMessageConverter()); } }