在项目开发中需要多数以json的数据格式向后台传输数据以及在页面中展示数据，但是还有一些需要xml或者peoperties等
Accept：告诉服务器，客户端支持的数据类型。
Content-Type:服务器通过这个头，接收的数据的类型

一、全部转换为在页面中以xml的形式展示

以xml的形式展示需要先有解析包，解析包根据实际情况而定

//扩展信息转换类
@Slf4j
@Configuration
public class MyWebconfig implements WebMvcConfigurer {
    @Override
    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        log.info("converters:"+converters.size());
//使用xml作为第一解析方式
        converters.add(0,new MappingJackson2XmlHttpMessageConverter());
 
    }
}

二、解析某一个具体的类

1、定义自定义自媒体解析方式

public class MyMessageConverter extends AbstractHttpMessageConverter<Person> {
    public MyMessageConverter(){
        super(MediaType.valueOf("application/properties-person"));
        setDefaultCharset(Charset.forName("UTF-8"));
    }
    @Override
    protected boolean supports(Class<?> aClass) {
        return aClass.isAssignableFrom(Person.class);
    }

    @Override
    protected Person readInternal(Class<? extends Person> aClass, HttpInputMessage httpInputMessage) throws IOException, HttpMessageNotReadableException {
        InputStream body = httpInputMessage.getBody();
        Properties properties=new Properties();
        properties.load(body);
        Person person=new Person();
        person.setAge(Integer.valueOf(properties.getProperty("person.age")));
        person.setName(properties.getProperty("person.name"));
        return person;
    }

    @Override
    protected void writeInternal(Person person, HttpOutputMessage httpOutputMessage) throws IOException, HttpMessageNotWritableException {
        OutputStream body = httpOutputMessage.getBody();
        Properties properties=new Properties();
        properties.setProperty("person.age",String.valueOf(person.getAge()));
        properties.setProperty("person.name",person.getName());
        properties.store(new OutputStreamWriter(body,getDefaultCharset()),"niahi");
    }
}

测试

//consumes :Content-type
//produces :Accept
  @PostMapping(value = "/person/json/to/proper",
            consumes = MediaType.APPLICATION_JSON_UTF8_VALUE,
            produces = "application/properties-person")//Accept
    public Person person(@RequestBody Person person) {
        return person;
    }

    @PostMapping(value = "/person/proper/to/json",
            consumes = "application/properties-person",//
            produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
    public Person person2(@RequestBody Person person) {
        return person;
    }

测试

image.png image.png