SpringBoot 自定义MessageConvert

1. 创建一个MessageConvert类，实现HttpMessageConvert接口
2. 1. 简单实现，只完成写功能。其他默认false

      package com.boot.converter;
      
      import com.boot.pojo.Person;
      import org.springframework.http.HttpInputMessage;
      import org.springframework.http.HttpOutputMessage;
      import org.springframework.http.MediaType;
      import org.springframework.http.converter.HttpMessageConverter;
      import org.springframework.http.converter.HttpMessageNotReadableException;
      import org.springframework.http.converter.HttpMessageNotWritableException;
      
      import java.io.IOException;
      import java.io.OutputStream;
      import java.util.List;
      
      /**
       * @Author 36140
       * @Date 2022/2/17 20:35
       * @Version 1.0
       */
      public class MyMesConverter implements HttpMessageConverter<Person> {
          @Override
          public List<MediaType> getSupportedMediaTypes(Class<?> clazz) {
              return HttpMessageConverter.super.getSupportedMediaTypes(clazz);
          }
      
          @Override
          public boolean canRead(Class<?> clazz, MediaType mediaType) {
              return false;
          }
      
          @Override
          public boolean canWrite(Class<?> clazz, MediaType mediaType) {
              return clazz.isAssignableFrom(Person.class);
          }
      
          @Override
          public List<MediaType> getSupportedMediaTypes() {
              return MediaType.parseMediaTypes("application/x-z");
          }
      
          @Override
          public Person read(Class<? extends Person> clazz, HttpInputMessage inputMessage) throws IOException, HttpMessageNotReadableException {
              return null;
          }
      
          @Override
          public void write(Person person, MediaType contentType, HttpOutputMessage outputMessage) throws IOException, HttpMessageNotWritableException {
              String str = person.getUname()+";"+person.getAge()+";"+person.getPet();
              OutputStream body = outputMessage.getBody();
              body.write(str.getBytes());
          }
      }
      

3.在自定义配置类中添加 自定义的MessageConvert

 @Bean
    public WebMvcConfigurer webMvcConfigurer(){
        return new WebMvcConfigurer() {
            @Override
            public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
                converters.add(new MyMesConverter());
            }
        };
    }