@QueryMap Could not fill in parameters

[Bryce-huang]

in my case：

    testImplementation 'org.junit.jupiter:junit-jupiter-api:5.7.0'
    testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.7.0'
    compile 'org.springframework.boot:spring-boot-starter-web:1.5.22.RELEASE'
    compile('io.github.openfeign:feign-spring4:11.2')
    compile('io.github.openfeign:feign-gson:11.2')
    compile('io.github.openfeign:feign-httpclient:11.2')
    compile("org.apache.httpcomponents:httpcore-nio:4.4.10")
    compile("org.apache.httpcomponents:httpasyncclient:4.1.4")
    compile("com.fasterxml.jackson.datatype:jackson-datatype-jsr310:2.9.8")

MyBean

	private Integer age;
	private String name;
	@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", locale = "zh", timezone = "GMT+8")
	private LocalDateTime birthDay;

myfeignConfig

/**
 * @author bryce
 * 2021/5/9 16:06
 */
@Configuration
public class FeignConfig {
	@Bean
	public MyFeign myFeign() {
		Gson gson = new GsonBuilder().setPrettyPrinting()
		                             .registerTypeAdapter(LocalDateTime.class, new LocalDateTimeAdapter())
		                             .registerTypeAdapter(LocalDate.class, new LocalDateAdapter())
		                             .create();
		GsonEncoder encode = new GsonEncoder(gson);
		GsonDecoder decode = new GsonDecoder(gson);
		return Feign.builder()
		            .encoder(encode)
		            .decoder(decode)
		            .client(new ApacheHttpClient(getHttpClient()))
		            .contract(new SpringContract())
		            .target(MyFeign.class, "http://localhost:8090");
	}


	private CloseableHttpClient getHttpClient() {
		CloseableHttpClient httpClient = null;
		try {
			// To trust self-signed certificates
			TrustStrategy acceptingTrustStrategy = (X509Certificate[] chain, String authType) -> true;
			SSLContext sslContext = SSLContexts.custom()
			                                   .loadTrustMaterial(null, acceptingTrustStrategy)
			                                   .build();
			SSLConnectionSocketFactory csf = new SSLConnectionSocketFactory(sslContext);
			httpClient = HttpClients.custom()
			                        .setSSLSocketFactory(csf)
			                        .build();
		} catch (Exception e) {
			e.fillInStackTrace();
		}
		return httpClient;
	}

}






public final  class LocalDateAdapter implements JsonSerializer<LocalDate>, JsonDeserializer<LocalDate> {

	@Override
	public JsonElement serialize(LocalDate date, Type typeOfSrc, JsonSerializationContext context) {
		//return new JsonPrimitive(date.format(DateTimeFormatter.ISO_LOCAL_DATE));
		return new JsonPrimitive(date.format(DateTimeFormatter.ofPattern("yyyy-MM-dd")));
	}

	@Override
	public LocalDate deserialize(JsonElement element, Type type, JsonDeserializationContext context) throws JsonParseException {
		String timestamp = element.getAsJsonPrimitive()
		                          .getAsString();
		//return LocalDate.parse(timestamp, DateTimeFormatter.ISO_LOCAL_DATE);
		return LocalDate.parse(timestamp, DateTimeFormatter.ofPattern("yyyy-MM-dd"));
	}
}



public final class LocalDateTimeAdapter implements JsonSerializer<LocalDateTime>, JsonDeserializer<LocalDateTime> {

	@Override
	public JsonElement serialize(LocalDateTime date, Type typeOfSrc, JsonSerializationContext context) {
		//return new JsonPrimitive(date.format(DateTimeFormatter.ISO_LOCAL_DATE_TIME));
		return new JsonPrimitive(date.format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));
	}

	@Override
	public LocalDateTime deserialize(JsonElement element, Type type, JsonDeserializationContext context) throws JsonParseException {
		String timestamp = element.getAsJsonPrimitive()
		                          .getAsString();
		// return LocalDateTime.parse(timestamp, DateTimeFormatter.ISO_LOCAL_DATE_TIME);
		return LocalDateTime.parse(timestamp, DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
	}
}

feign

	@GetMapping(value = "/mybean")
	MyBean myBean(@QueryMap MyBean myBean);

the service provider

	@GetMapping(value = "/mybean")
	public MyBean myBean(  MyBean myBean) {
		System.out.println("get the bean："+myBean);
		if (myBean == null) {
			System.out.println("null");
			return null;
		}
		if (myBean.getBirthDay()==null){
			myBean.setBirthDay(LocalDateTime.now());
		}
		myBean.setBirthDay(myBean.getBirthDay()
		                         .minusDays(1));
		return myBean;
	}

After sending the request using feign:

get the bean：MyBean{age=null, name='null', birthDay=null}

the param always null

[kdavisk6]

QueryMap is for use with query strings. In your example it looks like you want @RequestBody instead.