RestTemplate - RestClientException - 无法提取响应 [英] RestTemplate - RestClientException - Could Not Extract Response

问题描述

我在Spring应用程序中使用RestTemplate与API进行交互。我正在做一个GET请求，期待一些JSON的响应。执行此操作的代码如下所示：

I am using RestTemplate in my Spring application to interact with an API. I am doing a GET request and expecting some JSON in response. The code to do this is as follows:

HttpEntity<MultiValueMap<String, String>> requestEntity = new HttpEntity<MultiValueMap<String, String>>(null, requestHeaders);
ResponseEntity responseLogin = restTemplate.exchange(url, HttpMethod.GET, requestEntity, MyResponse.class);

当我运行它时，它在下面的行中断开：

When I run this its breaks on the following line:

ResponseEntity responseLogin = restTemplate.exchange(url, HttpMethod.GET, requestEntity, MyResponse.class);

我收到以下异常：

I get the following exception:

Could not extract response: no suitable HttpMessageConverter found for response type [com.responses.MyResponse] and content type [application/json;charset=utf-8]

我是RestTemplates的新手，并且通常会使用Java与REST API进行交互，因此任何有关解决此问题的帮助都将得到高度赞赏。 / b>

I'm new to RestTemplates and interacting with REST API with Java in general, so any help in solving this problem will be highly appreciated.

推荐答案

您需要指定您的messageconverter并将其绑定：

You need to specify your messageconverter and bind it:

  <mvc:annotation-driven>
    <mvc:message-converters register-defaults="false">
        <bean id="jacksonMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
            <property name="objectMapper" ref="jacksonObjectMapper" />
            <property name="supportedMediaTypes">
                <list>
                    <bean class="org.springframework.http.MediaType">
                        <constructor-arg index="0" value="application" />
                        <constructor-arg index="1" value="json" />
                        <constructor-arg index="2" value="UTF-8" />
                    </bean>
                </list>
            </property>

        </bean>
    </mvc:message-converters>
</mvc:annotation-driven>

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