java.lang.IllegalArgumentException:'json'参数必须是以下实例:[class java.lang.String,class [B [英] java.lang.IllegalArgumentException: 'json' argument must be an instance of: [class java.lang.String, class [B
问题描述
我正在使用Spring Rest Template在Hybris1811框架中提出第三方请求.但是获得响应后,我得到以下错误提示:
I am making a third party request in Hybris1811 framework using Spring Rest Template . But after getting response I am Getting below error:
Could not properly initialize user sessionorg.springframework.web.util.NestedServletException:
Request processing failed;
nested exception is java.lang.IllegalArgumentException: 'json' argument must be an instance of: [class java.lang.String, class [B, class java.io.File, class java.net.URL, class java.io.InputStream, class java.io.Reader] , but gotten: class org.springframework.http.ResponseEntity.
当我尝试实现以下代码时:
when I try to implement the below code:
< int:网关ID ="testRequestGateway";服务接口="com.test.testb2bintegrations.payment.gateway.testRequestGateway".default-request-channel ="MytestReqRequestChannel";default-reply-channel ="MytestReqResponseChannel"/>
<int:gateway id="testRequestGateway" service-interface="com.test.testb2bintegrations.payment.gateway.testRequestGateway" default-request-channel="MytestReqRequestChannel" default-reply-channel="MytestReqResponseChannel"/>
<int:channel id="MytestReqRequestChannel"/>
<int:header-enricher input-channel="MytestReqRequestChannel" output-channel="MytestReqEnrichedRequestChannel">
<int:header name="x-api-key" value="#{configurationService.configuration.getProperty('myKey')}"/>
<int:header name="Content-Type" value="application/json;charset=UTF-8" />
</int:header-enricher>
<int:object-to-json-transformer input-channel="MytestReqEnrichedRequestChannel"
output-channel="MytestReqJSONRequestChannel"/>
<int-http:outbound-gateway
url="#{configurationService.configuration.getProperty('myURL')}"
http-method="POST"
header-mapper="testPaymentHeaderMapper"
rest-template="testSubmitPaymentRestTemplate"
request-channel="MytestReqJSONRequestChannel"
reply-channel="MytestReqJSONResponseChannel"
charset="UTF-8"
expected-response-type="java.lang.String">
</int-http:outbound-gateway>
<int:json-to-object-transformer input-channel="MytestReqJSONResponseChannel"
output-channel="MytestReqResponseChannel"
type="com.test.testb2bintegrations.models.payment.request.testSubmitPaymentResponseVO"/>
<int:channel id="MytestReqResponseChannel"/>
拦截器代码:
public class TestRequestLoggingInterceptor implements ClientHttpRequestInterceptor
{
@Override
public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution) throws IOException
{
ClientHttpResponse response;
try
{
request.getHeaders().setAcceptCharset(Collections.singletonList(Charsets.UTF_8));
long startTimeinMillis = new Date().getTime();
response = execution.execute(request, body);
logResponse(response);
}
catch (Exception e)
{
LOGGER.error("Error when trying to fetch the information : " + e.getMessage());
throw new IOException("Connection was unsuccessful!", e);
}
return response;
}
private void logResponse(ClientHttpResponse response) throws IOException
{
String lineSeparator = System.lineSeparator();
String responseBody = StreamUtils.copyToString(response.getBody(), Charset.forName("UTF-8"));
StringBuilder responseLog = new StringBuilder();
responseLog.append("=======================Response Begin==========================").append(lineSeparator);
responseLog.append("Status code : {" + response.getStatusCode() + "}").append(lineSeparator);
responseLog.append("Status text : {" + response.getStatusText() + "}").append(lineSeparator);
responseLog.append("Headers : {" + response.getHeaders() + "}").append(lineSeparator);
responseLog.append("Response body: {" + responseBody + "}").append(lineSeparator);
responseLog.append("======================Response End==============================").append(lineSeparator);
}
推荐答案
当尝试从< int-http:outbound-gateway>
放入您的 testSubmitPaymentResponseVO
对象.
The error comes from the <int:json-to-object-transformer>
when it tries to convert a reply from the <int-http:outbound-gateway>
into your testSubmitPaymentResponseVO
object.
但是事实证明,答复不是使用 expected-response-type ="java.lang.String"
所期望的纯字符串,而是整个 ResponseEntity 代码>.
But it turns out that reply is not a plain string as you would expect using expected-response-type="java.lang.String"
, but the whole ResponseEntity
.
我们有这样的逻辑:
if (httpResponse.hasBody()) {
Object responseBody = httpResponse.getBody();
replyBuilder = (responseBody instanceof Message<?>)
? messageBuilderFactory.fromMessage((Message<?>) responseBody)
: messageBuilderFactory.withPayload(responseBody); // NOSONAR - hasBody()
}
else {
replyBuilder = messageBuilderFactory.withPayload(httpResponse);
}
因此,看起来 url =''## configurationService.configuration.getProperty('myURL')}''
REST服务没有任何内容作为HTTP响应返回给您.
So, looks like that url="#{configurationService.configuration.getProperty('myURL')}"
REST service returns nothing back to you as an HTTP response.
我们无能为力:我们无法控制该服务,因此您应该向他们咨询发送给他们的请求中有什么问题.
Nothing what we can help with: we don't control that service so you should consult with them what is wrong in the request you send to them.
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