使用 API 8.2 检索数据时缺少数据

Question

1. 我们在 CRM Dynamics 中有一个 Kendo 网格来加载任务，因此它会发送一个 使用 GET 将 fetchXml 提取到 API。
2. 前段时间我们遇到了问题，因为 fetchXml 太长了 使用 GET 发送并引发异常。
3. 我们更改了检索数据的方式。现在它使用 POST 方法，但是 真的很奇怪的行为出现了。
4. 如果检索到的列表中的第一条记录具有 scheduledstart == null，则 API 不会返回该字段。
5. 如果设置了，则API返回所有字段。
6. 如果第一条记录为空且不返回该字段，但 另一个任务被插入， schedulestart 的值为 it， 再次开始工作 - 相同的代码，相同的 fetchXml，相同的一切。
7. 事实上，如果我在 XRMToolbox 中执行 FetchXml，它会返回 符合预期的字段。

这是我的两段代码：

using get: bad request, querystring oveload
   var encodedFetchXml2 = encodeURI(fetchXml);
        var queryPath2 = "/api/data/v8.2/" + entityName + "s?fetchXml=" + encodedFetchXml2;
        var requestPath2 = Xrm.Page.context.getClientUrl() + queryPath2;
        var result2 = [];

        var req2 = new XMLHttpRequest();


        req2.open("GET", requestPath2, false);    // false: synchronous
        req2.setRequestHeader("Accept", "application/json");
        req2.setRequestHeader("Content-Type", "application/json; charset=utf-8");
        req2.setRequestHeader("Prefer", "odata.include-annotations=\"*\"");
        req2.onreadystatechange = function () {
            if (this.readyState === 4) {
                this.onreadystatechange = null;
                if (this.status === 200) {
                    var returned2 = JSON.parse(this.responseText);

                    result2 = returned2.value;
                }
                else {
                    alert(this.statusText);
                    console.log(requestPath);
                }
            }
        };
req2.send();
            return result2;

使用帖子：奇怪的行为

 var result = [];
        var encodedFetchXml = encodeURI(fetchXml);

        var req = new XMLHttpRequest();
        req.open("POST", Xrm.Page.context.getClientUrl() + "/api/data/v8.2/$batch", false);
        req.setRequestHeader("OData-MaxVersion", "4.0");
        req.setRequestHeader("OData-Version", "4.0");
        req.setRequestHeader("Accept", "application/json");
        req.setRequestHeader("Content-Type", "multipart/mixed;boundary=batch_" + entityName + "fetch");
        req.setRequestHeader("Prefer", "odata.include-annotations=\"*\"");

        req.onreadystatechange = function () {
            if (this.readyState === 4) {
                req.onreadystatechange = null;
                if (this.status === 200) {

                    var response = JSON.parse(this.response.substring(this.response.indexOf('{'), this.response.lastIndexOf('}') + 1));

                    result = response.value;

                    //var returned = JSON.parse(this.responseText);
                    //result = returned.value;
                } else {
                    alert(this.statusText);
                    console.log(requestPath);
                }
            }
        };

        var body = '--batch_' + entityName + 'fetch\n'
        body += 'Content-Type: application/http\n'
        body += 'Content-Transfer-Encoding: binary\n'
        body += '\n'
        body += 'GET ' + Xrm.Page.context.getClientUrl() + '/api/data/v8.2/' + entityName + 's?fetchXml='+ encodedFetchXml+' HTTP/1.1\n'
        body += 'Content-Type: application/json\n'           
        body += 'OData-Version: 4.0\n'
        body += 'OData-MaxVersion: 4.0\n'
        body += 'Prefer: odata.include-annotations="*"\n'
        body += '\n'
        body += '--batch_' + entityName + 'fetch--'

        req.send(body);

        return result;

希望有人知道答案。

谢谢。

Answer 1

使用提琴手，我会根据第一个检索到的记录是否有空值，对同一请求得到不同的响应

获取xml

<fetch mapping="logical" >
<entity name="annotation" >
    <attribute name="annotationid" />
    <attribute name="createdby" />
    <attribute name="createdon" />
    <attribute name="modifiedby" />
    <attribute name="modifiedon" />
    <attribute name="subject" />
    <attribute name="notetext" />
    <attribute name="filename" />
    <attribute name="objectid" />
    <order attribute="createdon" descending="true" />
    <filter type="or" />
    <link-entity name="hamiav_position" from="hamiav_positionid" to="objectid" link-type="inner" alias="rela" >
        <filter type="or" >
            <condition attribute="hamiav_positionid" operator="in" >
                <value uitype="hamiav_position" >
                    A267205E-222E-E911-80FC-005056B700A7
                </value>
            </condition>
        </filter>
    </link-entity>
</entity>

第一条记录在主题和注释文本中有值

"@odata.context":"http://hamsrv14:5555/HAMS/api/data/v8.2/$metadata#annotations(_modifiedby_value,_objectid_value,objectid_hamiav_position,modifiedon,notetext,createdon,_createdby_value,filename,objecttypecode,subject,annotationid)","value":[

 "@odata.etag":"W/\"67757686\"","_modifiedby_value@OData.Community.Display.V1.FormattedValue":"Fernando Garc\u00eda","_modifiedby_value@Microsoft.Dynamics.CRM.lookuplogicalname":"systemuser","_modifiedby_value":"1d88be59-7f05-e711-80c8-005056b700a7","_objectid_value@OData.Community.Display.V1.FormattedValue":null,"_objectid_value@Microsoft.Dynamics.CRM.associatednavigationproperty":"objectid_hamiav_position","_objectid_value@Microsoft.Dynamics.CRM.lookuplogicalname":"hamiav_position","_objectid_value":"a267205e-222e-e911-80fc-005056b700a7","modifiedon@OData.Community.Display.V1.FormattedValue":"10/06/2019 10:46","modifiedon":"2019-06-10T08:46:19Z","notetext":".","createdon@OData.Community.Display.V1.FormattedValue":"10/06/2019 10:46","createdon":"2019-06-10T08:46:19Z","_createdby_value@OData.Community.Display.V1.FormattedValue":"Fernando Garc\u00eda","_createdby_value@Microsoft.Dynamics.CRM.lookuplogicalname":"systemuser","_createdby_value":"1d88be59-7f05-e711-80c8-005056b700a7","filename":"AER-AR-01-092_full asset valuation_feb 2019_FR 31090-31089-31085-31084_PARQUEVAL S.L.jpg","objecttypecode@OData.Community.Display.V1.FormattedValue":"Position","objecttypecode":"hamiav_position","subject":".","annotationid":"19460037-5c8b-e911-8105-005056b700a7","objectid_hamiav_position":{
    "hamiav_assetmanager":null,"_modifiedby_value":null,"hamiav_totalprincipal_state":null,"_ownerid_value":null,"_owningteam_value":null,"statuscode":null,"timezoneruleversionnumber":null,"hamiav_hams_positionid":null,"_createdonbehalfby_value":null,"hamiav_totalprincipal":null,"hamiav_liveoutstandingbalance_state":null,"_transactioncurrencyid_value":null,"statecode":null,"hamiav_totalaccruedinterest_state":null,"hamiav_hams_portfolioid":null,"hamiav_numberofassets_state":null,"hamiav_liveoutstandingbalance_base":null,"_hamiav_subportfolioid_value":null,"_modifiedonbehalfby_value":null,"hamiav_amrecoverystatus":null,"hamiav_totalprincipal_base":null,"hamiav_numberofassets":null,"hamiav_hams_owner":null,"hamiav_mainparticipant":null,"hamiav_portfolio":null,"hamiav_name":null,"hamiav_numberofparticipants":null,"hamiav_mainparticipantnif":null,"_owninguser_value":null,"hamiav_totalaccruedinterest_base":null,"hamiav_positionid":"a267205e-222e-e911-80fc-005056b700a7","_owningbusinessunit_value":null,"hamiav_liveoutstandingbalance":null,"versionnumber":null,"modifiedon":null,"hamiav_contactstatus":null,"hamiav_recoverystrategy":null,"utcconversiontimezonecode":null,"_createdby_value":null,"exchangerate":null,"hamiav_numberofrelatedcontracts":null,"hamiav_totalprincipal_date":null,"createdon":null,"hamiav_numberofrelatedcontracts_date":null,"hamiav_subportfoliocobra":null,"hamiav_numberofrelatedcontracts_state":null,"_hamiav_portfolioid_value":null,"hamiav_totalaccruedinterest":null,"overriddencreatedon":null,"hamiav_numberofassets_date":null,"hamiav_totalaccruedinterest_date":null,"hamiav_liveoutstandingbalance_date":null,"_hamiav_assetmanagerid_value":null,"importsequencenumber":null,"_hamiav_mainparticipantid_value":null,"hamiav_code":null,"hamiav_subportfolio":null,"hamiav_assetmanagername":null
  }
},

我插入了一条没有主题和注释文本值的新记录，因此第一条记录不包含该字段的值，响应是：

"@odata.context":"http://hamsrv14:5555/HAMS/api/data/v8.2/$metadata#annotations(_modifiedby_value,_objectid_value,objectid_hamiav_position,modifiedon,createdon,_createdby_value,filename,objecttypecode,annotationid)","value":[
{
  "@odata.etag":"W/\"67757548\"","_modifiedby_value@OData.Community.Display.V1.FormattedValue":"Fernando Garc\u00eda","_modifiedby_value@Microsoft.Dynamics.CRM.lookuplogicalname":"systemuser","_modifiedby_value":"1d88be59-7f05-e711-80c8-005056b700a7","_objectid_value@OData.Community.Display.V1.FormattedValue":null,"_objectid_value@Microsoft.Dynamics.CRM.associatednavigationproperty":"objectid_hamiav_position","_objectid_value@Microsoft.Dynamics.CRM.lookuplogicalname":"hamiav_position","_objectid_value":"a267205e-222e-e911-80fc-005056b700a7","modifiedon@OData.Community.Display.V1.FormattedValue":"10/06/2019 10:14","modifiedon":"2019-06-10T08:14:28Z","createdon@OData.Community.Display.V1.FormattedValue":"10/06/2019 10:14","createdon":"2019-06-10T08:14:28Z","_createdby_value@OData.Community.Display.V1.FormattedValue":"Fernando Garc\u00eda","_createdby_value@Microsoft.Dynamics.CRM.lookuplogicalname":"systemuser","_createdby_value":"1d88be59-7f05-e711-80c8-005056b700a7","filename":"AER-AR-01-092_full asset valuation_feb 2019_FR 31090-31089-31085-31084_PARQUEVAL S.L.jpg","objecttypecode@OData.Community.Display.V1.FormattedValue":"Position","objecttypecode":"hamiav_position","annotationid":"2e4ef9c3-578b-e911-8105-005056b700a7","objectid_hamiav_position":{
    "hamiav_assetmanager":null,"_modifiedby_value":null,"hamiav_totalprincipal_state":null,"_ownerid_value":null,"_owningteam_value":null,"statuscode":null,"timezoneruleversionnumber":null,"hamiav_hams_positionid":null,"_createdonbehalfby_value":null,"hamiav_totalprincipal":null,"hamiav_liveoutstandingbalance_state":null,"_transactioncurrencyid_value":null,"statecode":null,"hamiav_totalaccruedinterest_state":null,"hamiav_hams_portfolioid":null,"hamiav_numberofassets_state":null,"hamiav_liveoutstandingbalance_base":null,"_hamiav_subportfolioid_value":null,"_modifiedonbehalfby_value":null,"hamiav_amrecoverystatus":null,"hamiav_totalprincipal_base":null,"hamiav_numberofassets":null,"hamiav_hams_owner":null,"hamiav_mainparticipant":null,"hamiav_portfolio":null,"hamiav_name":null,"hamiav_numberofparticipants":null,"hamiav_mainparticipantnif":null,"_owninguser_value":null,"hamiav_totalaccruedinterest_base":null,"hamiav_positionid":"a267205e-222e-e911-80fc-005056b700a7","_owningbusinessunit_value":null,"hamiav_liveoutstandingbalance":null,"versionnumber":null,"modifiedon":null,"hamiav_contactstatus":null,"hamiav_recoverystrategy":null,"utcconversiontimezonecode":null,"_createdby_value":null,"exchangerate":null,"hamiav_numberofrelatedcontracts":null,"hamiav_totalprincipal_date":null,"createdon":null,"hamiav_numberofrelatedcontracts_date":null,"hamiav_subportfoliocobra":null,"hamiav_numberofrelatedcontracts_state":null,"_hamiav_portfolioid_value":null,"hamiav_totalaccruedinterest":null,"overriddencreatedon":null,"hamiav_numberofassets_date":null,"hamiav_totalaccruedinterest_date":null,"hamiav_liveoutstandingbalance_date":null,"_hamiav_assetmanagerid_value":null,"importsequencenumber":null,"_hamiav_mainparticipantid_value":null,"hamiav_code":null,"hamiav_subportfolio":null,"hamiav_assetmanagername":null
  }
}