Spring-Integration：int-http:outbound-channel-adapter 使用 json

Question

我想使用int-http:outbound-channel-adapter 调用我的rest 服务，但不幸的是它不想将我的pojo 转换为json。

我的配置：

<int-http:outbound-channel-adapter 
    channel="ticketOutgoingChannel"
    http-method="PUT"
    url="http://localhost:8080/process/ticket"
    expected-response-type="*.model.Ticket"
    message-converters="converters"
/>

<util:list id="converters">
    <bean class="org.springframework.http.converter.ByteArrayHttpMessageConverter" />
    <bean class="org.springframework.http.converter.StringHttpMessageConverter" />
    <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter" />
</util:list>

堆栈跟踪：

Caused by: org.springframework.web.client.RestClientException: Could not write request: no suitable HttpMessageConverter found for request type [*.model.Ticket] and content type [application/x-java-serialized-object]
at org.springframework.web.client.RestTemplate$HttpEntityRequestCallback.doWithRequest(RestTemplate.java:810)
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:594)
at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:572)
at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:493)
at org.springframework.integration.http.outbound.HttpRequestExecutingMessageHandler.handleRequestMessage(HttpRequestExecutingMessageHandler.java:382)
... 34 more

Answer 1

[application/x-java-serialized-object]

如果没有提供 contentType 标头，这是 Java 对象的默认内容类型。

使用

<int:header-enricher input-channel="ticketOutgoingPreProcessChannel" 
       output-channel="ticketOutgoingChannel">
    <int:header name="contentType" value="application/json" overwrite="true/>
</int:header-enricher>

指示适配器转换为 JSON。