我遇到了问题:
如何处理第三方以http:outbound-gateway(以及其中的jackson-com.fasterxml.jackson one)未知的格式返回json响应的情况。
Spring Integration Config:
<int:chain input-channel="ul_campaignSetup_channel">
<int:header-enricher>
<int:header name="Content-Type" value="application/json; charset=UTF-8"/>
</int:header-enricher>
<int-http:outbound-gateway id="ulHttpOutboundGateway"
http-method="POST"
url="${request.url}"
extract-request-payload="true"
error-handler="campaignSetupResponseHandler"
expected-response-type="integration.ul.message.CampaignSetupResponse"
request-factory="ulRequestFactory">
<int-http:uri-variable name="url" expression="headers.url"/>
</int-http:outbound-gateway>
<int:service-activator method="handle" ref="campaignSetupResponseHandler" />
<int:json-to-object-transformer id="myId" />
</int:chain>
<bean id="campaignSetupResponseHandler" class="integration.ul.message.CampaignSetupResponseHandler" />
<bean id="jackson2http" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
<property name="objectMapper" ref="ulObjectMapper" />
</bean>
<bean id="ulObjectMapper" class="com.fasterxml.jackson.databind.ObjectMapper"/>
<bean id="ulRequestFactory" class="org.springframework.http.client.SimpleClientHttpRequestFactory">
<property name="connectTimeout" value="10000" />
<property name="readTimeout" value="10000" />
</bean>
public class CampaignSetupResponse {
private String status;
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
}
纠正来自第三方的JSON响应(可行):
{
"status" : "1"
}
第三方的JSON响应不正确(导致异常):
{
"nonExistingProperty": "non existing value"
}
我得到例外:
org.springframework.http.converter.HttpMessageNotReadableException: Could not read JSON: Unrecognized field "nonExistingProperty" (class integration.ul.message.CampaignSetupResponse), not marked as ignorable (one known property: "status"])
at [Source: sun.net.www.protocol.http.HttpURLConnection$HttpInputStream@20fddd96; line: 2, column: 27] (through reference chain: integration.ul.message.CampaignSetupResponse["nonExistingProperty"]); nested exception is com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "nonExistingProperty" (class integration.ul.message.CampaignSetupResponse), not marked as ignorable (one known property: "status"])
at [Source: sun.net.www.protocol.http.HttpURLConnection$HttpInputStream@20fddd96; line: 2, column: 27] (through reference chain: integration.ul.message.CampaignSetupResponse["nonExistingProperty"])
at org.springframework.http.converter.json.MappingJackson2HttpMessageConverter.readJavaType(MappingJackson2HttpMessageConverter.java:228)
at org.springframework.http.converter.json.MappingJackson2HttpMessageConverter.read(MappingJackson2HttpMessageConverter.java:220)
如何处理此解析异常?
我尝试了几个带有错误通道的解决方案(http:outbound-gateway似乎没有一个)和错误处理程序(它更像实际的http错误,如500)但无法处理Jackson解析异常。
任何想法都欢迎,欢呼各位!
答案 0 :(得分:0)
已经同意的接口是什么? 老实说,第二个响应与界面定义不一致 - 我只是让他们修复它。 (对我来说,它看起来像是他们的结果,例如&#34;状态&#34;变量不存在或某事)。 否则,您需要自己处理响应。
答案 1 :(得分:0)
错误处理(error-channel
)在链上游的某个组件上进行 - 例如无论什么开始你的流程。
错误消息有效内容为MessagingException
,其中包含2个属性failedMessage
和cause
。
答案 2 :(得分:0)
这是一个我从未回复过的老问题,对不起,伙计们呢!
我无法让第三方改变他们的响应体,所以最终我关闭了json解析响应(json-to-object-transformer)
我用自己的json解析器解析它,所以我可以捕获解析异常。我知道,这不是最干净的解决方案,但那是我当时唯一可以做的事情。