javascript - ArcGIS REST web_map_as_json 定义表达式

Question

我正在使用 Javascript 对 ArcGIS 10.5 服务器上的 ExportWebMap 函数进行 REST 调用，该函数返回 map 图像。返回了 map 图像，但当我只想要一个点时它会显示所有点。我认为我的 defitinitionExpression 被忽略了。我查看了文档和论坛，但没有发现我的错误。

MAP QUERY URL:我可以通过 OBJECTID 成功查询 MapServer 以获取单个点

https://<baseUrl>/<arcserver>/rest/services/<project>/<map>/MapServer/export 

REST 网址:

https://<baseUrl>/<arcserver>/rest/services/Utilities/PrintingTools/GPServer/Export%20Web%20Map%20Task/execute

这是我发布到导出 Web map 时的参数

Layout_Template: MAP_ONLY,
Format: PNG32,
f: json
Web_Map_as_JSON:
{
    "mapOptions":
    {
        "showAttribution":false,
        "extent":
        {
            "xmin":-118.85360990096176,
            "ymin":33.99062491328014,
            "xmax":-118.75318799544432,
            "ymax":34.04042561067984,
            "spatialReference":
            {
                "wkid":4326
            }
        },
        "spatialReference":
        {
            "wkid":4326
        }
    },
    "operationalLayers":
    [
        {
            "id":null,
            "title":"All Wells",
            "opacity":1,
            "url":"https://<baseUrl>/<arcserver>/rest/services/<project>/<map>/MapServer",
            "layers":
            {
                "id":0,
                "layerDefinition":
                {
                    "definitionExpression":"OBJECTID=27100"
                }
            }
        }
    ],
    "baseMap":
    {
        "title":"Street Basemap",
        "baseMapLayers":
        [
            {
                "url":"https://services.arcgisonline.com/arcgis/rest/services/ESRI_StreetMap_World_2D/MapServer",
                "opacity":1
            }
        ]
    },
    "exportOptions":
    {
        "dpi":96,
        "outputSize":[250,210]
    }
}

Answer 1

通过将业务层从 map 服务器更改为要素服务器并移动 layerDefinition 来解决。我的理解是 map 服务器能够执行我想要的操作，但可能存在我不知道的服务器配置选项。

Web_Map_as_JSON:
{
    "mapOptions":
    {
        "showAttribution":false,
        "extent":
        {
            "xmin":-118.85360990096176,
            "ymin":33.99062491328014,
            "xmax":-118.75318799544432,
            "ymax":34.04042561067984,
            "spatialReference":
            {
                "wkid":4326
            }
        },
        "spatialReference":
        {
            "wkid":4326
        }
    },
    "operationalLayers":
    [
        {
            opacity: 1,
            url: "https://<baseUrl>/<arcserver>/rest/services/<project>/<map>/FeatureServer/0",
            layerDefinition: {
                definitionExpression: "OBJECTID=27100"
            }
        },
    ],
    "baseMap":
    {
        "title":"Street Basemap",
        "baseMapLayers":
        [
            {
                "url":"https://services.arcgisonline.com/arcgis/rest/services/ESRI_StreetMap_World_2D/MapServer",
                "opacity":1
            }
        ]
    },
    "exportOptions":
    {
        "dpi":96,
        "outputSize":[250,210]
    }
}