org.springframework.web.reactive.function.UnsupportedMediaTypeException: Content type 'application/json;charset=UTF-8' not supported

问题

The error show up when My code like this:

@Test
public void getTemplateByIdTest() throws Exception {
    client.get().uri("/template/getTemplate/7")
            .exchange()
            .expectStatus().isOk()
            .expectHeader().contentType(MediaType.APPLICATION_JSON_UTF8)
            .expectBody(VtTemplateVO.class)
            .returnResult();
}

When I change my code like this,it's ok!

@Test
public void getTemplateByIdTest() throws Exception {
    client.get().uri("/template/getTemplate/7")
            .exchange()
            .expectStatus().isOk()
            .expectHeader().contentType(MediaType.APPLICATION_JSON_UTF8)
            .expectBody(String.class)
            .returnResult();
}

Why when I use .expectBody(VtTemplateVO.class) it will say org.springframework.web.reactive.function.UnsupportedMediaTypeException: Content type 'application/json;charset=UTF-8' not supported

Somebody knows? please help,thanks

回答1:

I was also facing this issue caused by Jackson.There needs to be a default constructor for the VtTemplateVO.class with annotated properties. Ex. what I did-

@JsonCreator
public Comment(@JsonProperty("id")String id, @JsonProperty("text")String text, @JsonProperty("createdTime") LocalDate createdTime) {
        this.id = id;
        this.text = text;
        this.createdTime = createdTime;
}

Hope it works for you as well. :)

回答2:

Instead of annotating every parameter with @JsonProperty, you can also compile your code with the -parameters flag (since Java 8). This will retain the parameter names in the bytecode thus allowing Jackson to use them. See the Maven docs

<compilerArgs>
  <arg>-parameters</arg>
</compilerArgs>

You should also consider this https://stackoverflow.com/a/44075684/2145769 that now parameter names become part of your API.

回答3:

Use

.accept(MediaType.APPLICATION_JSON) as

webClientBuilder.build() .post() .uri(ccpApiUrl) //.accept(MediaType.APPLICATION_JSON) .bodyValue(customerRequest) .exchange() .doOnSuccess( clientResponse -> logger.info("clientResponse.headers() = " + clientResponse.headers()) ) .doOnSuccess( clientResponse -> { logger.info("clientResponse.statusCode() = " + clientResponse.statusCode()); getStatus(clientResponse.statusCode());

                        })
            //.timeout(Duration.ofSeconds(5))
            .flatMap(clientResponse -> clientResponse.bodyToMono(CcpResponse.class))
            // .retryWhen(fixedRetry)
            .block();

来源：https://stackoverflow.com/questions/51514296/org-springframework-web-reactive-function-unsupportedmediatypeexception-content

标签

java

spring-test