自上周以来，我们开始使用SDK版本3.34.1(并在3.35.0中进行了测试(。当我们向SAP服务发送PATCH请求时，我们会从SAP服务(SAP网关(收到HTTP 204 No-Content响应。当SDK尝试读取该响应时，它会尝试解析空的响应体。这导致以下异常：
2020-12-17 16:13:51.767 ERROR 106363 --- [ut.sap.cases]-0] .s.c.s.d.o.c.r.ODataRequestResultGeneric :
Failed to buffer HTTP response. Unable to buffer HTTP entity.
java.lang.IllegalArgumentException: Wrapped entity may not be null
at org.apache.http.util.Args.notNull(Args.java:54)
at org.apache.http.entity.HttpEntityWrapper.<init>(HttpEntityWrapper.java:59)
at org.apache.http.entity.BufferedHttpEntity.<init>(BufferedHttpEntity.java:59)
at com.sap.cloud.sdk.datamodel.odata.client.request.ODataRequestResultGeneric.lambda$getHttpResponse$4f00ca4e$1(ODataRequestResultGeneric.java:180)
at io.vavr.control.Try.of(Try.java:75)
at com.sap.cloud.sdk.datamodel.odata.client.request.ODataRequestResultGeneric.getHttpResponse(ODataRequestResultGeneric.java:180)
at com.sap.cloud.sdk.datamodel.odata.client.request.ODataHealthyResponseValidator.requireHealthyResponse(ODataHealthyResponseValidator.java:44)
at io.vavr.control.Try.andThenTry(Try.java:250)
at com.sap.cloud.sdk.datamodel.odata.client.request.ODataRequestGeneric.tryExecute(ODataRequestGeneric.java:194)
at com.sap.cloud.sdk.datamodel.odata.client.request.ODataRequestGeneric.tryExecuteWithCsrfToken(ODataRequestGeneric.java:225)
at com.sap.cloud.sdk.datamodel.odata.client.request.ODataRequestUpdate.execute(ODataRequestUpdate.java:136)
at com.sap.cloud.sdk.datamodel.odata.helper.FluentHelperUpdate.executeRequest(FluentHelperUpdate.java:372)
at com.alliander.gvrn.pmd.adapter.out.sap.cases.SapCasesClient.updateCase(SapCasesClient.java:103)
at com.alliander.gvrn.pmd.adapter.out.sap.cases.SapCasesClient.persistOn(SapCasesClient.java:81)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at ....
我们使用生成的类型化OData V2客户端，该客户端是根据SDK文档提供EDMX文件生成的。
下面是调用该服务的函数的代码片段。matrixCase是一个自动生成的对象。OData PATCH由SAP服务正确处理。
private void updateCase(final ExternalId caseId, final PMDFlow pmdFlow, String jwtToken) {
final HttpDestination sapMatrix = httpDestinationProvider.providePrincipalPropagationDestination(jwtToken);
// "Create matrixCase object with key
MatrixCase matrixCase = MatrixCase.builder()
.psReference(caseId.getValue())
.build();
// Set PmdAppControl explicitly, otherwise the generated client doesn't know which fields are updated.
matrixCase.setPMDAppControl(pmdFlow.getSapNotation());
try {
casesService
.updateMatrixCase(matrixCase)
.executeRequest(sapMatrix);
} catch (ODataException e) {
OdataLogger.logODataException(e);
throw new SapClientException(e);
}
}
由于其他问题，我们已经更新到SDK 3.34.1，但在我们使用3.32.0之前，我不记得在版本3.32.0 中有这个问题
有什么想法吗？
Danny
是的，您的观察是正确的，204表示有效答案，不值得记录错误。因此，Cloud SDK团队将调整日志输入级别，以减少警报。
谨致问候，Tanvi