解决feign调用无法解析IPage问题

调用feign返回IPage对象时，会报错误Cannot construct instance of com.baomidou.mybatisplus.core.metadata.IPage，主要思路就是将IPage对象转换为Page对象，解决方案如下：

public class IPageDeserializerConfig extends StdDeserializer<IPage> {

    protected IPageDeserializerConfig(Class<?> vc) {
        super(vc);
    }

    @Override
    public IPage deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
        JsonNode node = p.getCodec().readTree(p);
        String s = node.toString();
        ObjectMapper om = new ObjectMapper();
        Page page = om.readValue(s, Page.class);
        return page;
    }

}

@Configuration
public class WebDataConvertConfig extends WebMvcConfigurationSupport {

    @Override
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        converters.add(mappingJackson2HttpMessageConverter());
        super.configureMessageConverters(converters);
    }

    @Bean
    public MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter() {
        MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
        ObjectMapper mapper = new ObjectMapper();
        mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);

        SimpleModule module = new SimpleModule();
        module.addDeserializer(IPage.class, new IPageDeserializerConfig(IPage.class));
        mapper.registerModule(module);

        converter.setSupportedMediaTypes(Arrays.asList(MediaType.APPLICATION_JSON, MediaType.APPLICATION_JSON_UTF8, MediaType.APPLICATION_OCTET_STREAM));
        converter.setObjectMapper(mapper);

        return converter;
    }
}