我正在使用 VDM 来查询函数导入。它返回 null，这不是预期的。它不会进入异常流程，因此无法确定调用是否成功。
PurchaseRequisitionHeaderBOView resultPojo = null;
try {
resultPojo = sspprService.purchaserequisition_WdActivation(purchaseRequisition, draftUUID, isActiveEntity)
.execute(new ErpConfigContext(s4destination));
if (resultPojo == null)
logger.error("VDM call returned null!");
} catch (ODataException e) {
logger.error(EXCEPTION_ACTIVATING_CART, e);
throw new org.apache.olingo.odata2.api.exception.ODataException(EXCEPTION_ACTIVATING_CART, e);
}
预期：如果调用成功，则为非空 POJO。如果调用失败，它应该命中 catch 块。
函数导入的响应
{
"d" : {
"__metadata" : {
"id" : "https://uyt700-er9003.wdf.sap.corp/sap/opu/odata/sap/MMPUR_REQ_GPR_MAINTAIN_SRV/I_Purchaserequisition_Wd(PurchaseRequisition='12444947',DraftUUID=guid'00000000-0000-0000-0000-000000000000',IsActiveEntity=true)",
"uri" : "https://uyt700-er9003.wdf.sap.corp/sap/opu/odata/sap/MMPUR_REQ_GPR_MAINTAIN_SRV/I_Purchaserequisition_Wd(PurchaseRequisition='12444947',DraftUUID=guid'00000000-0000-0000-0000-000000000000',IsActiveEntity=true)",
"type" : "MMPUR_REQ_GPR_MAINTAIN_SRV.I_Purchaserequisition_WdType",
"etag" : "W/\"20190920072451.9970020m\""
},
"Activation_ac" : false,
"Edit_ac" : true,
"Preparation_ac" : false,
"Validation_ac" : false,
"PurReqnDescription_fc" : 3,
"PurReqnSSPRequestor_fc" : 3,
"PurchaseRequisition" : "12444947",
"PurReqnSSPRequestor" : "00001076",
"PurReqnSSPAuthor" : "CSAC",
"PurchaseRequisitionType" : "NB",
"CreationDate" : "\/Date(1568937600000)\/",
"LastChangeDateTime" : "20190920072451.9970020",
"IsOnBehalfCart" : "",
"BusinessUser" : "CSAC",
"PurReqnIsCreatedInExpertMode" : false,
"PurReqnDescription" : "",
"EmployeeFullName" : "Don Draper",
"PurReqnOrigin" : "S",
"IsSrchEnabled" : false,
"PurReqnLifeCycleStatus" : "",
"PurReqnLifeCycleStatusName" : "",
"NumberOfItems" : 0,
"TotalNetAmount" : "0.00",
"Currency" : "",
"IsExtPurgScenario" : false,
"PurReqnIsCopyDraft" : false,
"HasDraftEntity" : false,
"DraftUUID" : "00000000-0000-0000-0000-000000000000",
"DraftEntityCreationDateTime" : null,
"DraftEntityLastChangeDateTime" : null,
"HasActiveEntity" : false,
"IsActiveEntity" : true,
"DraftAdministrativeData" : {
"__deferred" : {
"uri" : "https://uyt700-er9003.wdf.sap.corp/sap/opu/odata/sap/MMPUR_REQ_GPR_MAINTAIN_SRV/I_Purchaserequisition_Wd(PurchaseRequisition='12444947',DraftUUID=guid'00000000-0000-0000-0000-000000000000',IsActiveEntity=true)/DraftAdministrativeData"
}
},
"SiblingEntity" : {
"__deferred" : {
"uri" : "https://uyt700-er9003.wdf.sap.corp/sap/opu/odata/sap/MMPUR_REQ_GPR_MAINTAIN_SRV/I_Purchaserequisition_Wd(PurchaseRequisition='12444947',DraftUUID=guid'00000000-0000-0000-0000-000000000000',IsActiveEntity=true)/SiblingEntity"
}
}
}
}