原文链接及内容

原文链接：https://openlayers.org/en/latest/examples/wmts-capabilities.html

运行界面

此示例演示了解析WMTS GetCapabilities响应的结果对象的内容。

解析的结果如下：

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{
  "ServiceIdentification": {
    "Title": "Koordinates Labs",
    "ServiceType": "OGC WMTS",
    "ServiceTypeVersion": "1.0.0"
  },
  "ServiceProvider": {
    "ProviderName": "Koordinates",
    "ProviderSite": "http://labs.koordinates.com",
    "ServiceContact": {}
  },
  "OperationsMetadata": {
    "GetCapabilities": {
      "DCP": {
        "HTTP": {
          "Get": [
            {
              "href": "https://labs.koordinates.com/services;key=d740ea02e0c44cafb70dce31a774ca10/wmts/1.0.0/layer/7328/WMTSCapabilities.xml?",
              "Constraint": [
                {
                  "name": "GetEncoding",
                  "AllowedValues": {
                    "Value": [
                      "KVP"
                    ]
                  }
                }
              ]
            }
          ]
        }
      }
    },
    "GetFeatureInfo": {
      "DCP": {
        "HTTP": {
          "Get": [
            {
              "href": "https://labs.koordinates.com/services;key=d740ea02e0c44cafb70dce31a774ca10/wmts/?",
              "Constraint": [
                {
                  "name": "GetEncoding",
                  "AllowedValues": {
                    "Value": [
                      "KVP"
                    ]
                  }
                }
              ]
            }
          ]
        }
      }
    }
  },
  "version": "1.0.0",
  "Contents": {
    "Layer": [
      {
        "Title": "New Zealand Earthquakes",
        "Abstract": "Historical earthquake data, accessed via the [GeoNet WFS feed](http://info.geonet.org.nz/display/appdata/Advanced+Queries). The data has been filtered to only include quakes in proximity to New Zealand with an `eventtype` of \"Earthquake\" or \"none\" per the [GeoNet catalogue](http://info.geonet.org.nz/display/appdata/Catalogue+Output). Most fields have been removed. Please also note the excluded data per this [GeoNet page](http://info.geonet.org.nz/display/appdata/The+Gap). We acknowledge the New Zealand GeoNet project and its sponsors EQC, GNS Science and LINZ, for providing data used in this layer.",
        "Identifier": "layer-7328",
        "WGS84BoundingBox": [
          -180,
          -49.454297,
          180,
          -31.16
        ],
        "Style": [
          {
            "Title": "Weighted point styles",
            "Identifier": "style=39",
            "isDefault": true
          }
        ],
        "Format": [
          "image/png"
        ],
        "TileMatrixSetLink": [
          {
            "TileMatrixSet": "EPSG:3857"
          }
        ],
        "ResourceURL": [
          {
            "format": "image/png",
            "template": "https://koordinates-tiles-a.global.ssl.fastly.net/services;key=d740ea02e0c44cafb70dce31a774ca10/tiles/v4/layer=7328,{style}/{TileMatrixSet}/{TileMatrix}/{TileCol}/{TileRow}.png",
            "resourceType": "tile"
          },
          {
            "format": "application/json",
            "template": "https://labs.koordinates.com/services;key=d740ea02e0c44cafb70dce31a774ca10/wmts/1.0.0/layer/7328/featureinfo/{TileMatrixSet}/{TileMatrix}/{TileCol}/{TileRow}/{I}/{J}.json",
            "resourceType": "FeatureInfo"
          },
          {
            "format": "text/html",
            "template": "https://labs.koordinates.com/services;key=d740ea02e0c44cafb70dce31a774ca10/wmts/1.0.0/layer/7328/featureinfo/{TileMatrixSet}/{TileMatrix}/{TileCol}/{TileRow}/{I}/{J}.html",
            "resourceType": "FeatureInfo"
          }
        ]
      }
    ],
    "TileMatrixSet": [
      {
        "Identifier": "EPSG:3857",
        "BoundingBox": [
          -20037508.342789,
          -20037508.342789,
          20037508.342789,
          20037508.342789
        ],
        "SupportedCRS": "urn:ogc:def:crs:EPSG::3857",
        "WellKnownScaleSet": "urn:ogc:def:wkss:OGC:1.0:GoogleMapsCompatible",
        "TileMatrix": [
          {
            "Identifier": "0",
            "ScaleDenominator": 559082264.029,
            "TopLeftCorner": [
              -20037508.3428,
              20037508.3428
            ],
            "TileWidth": 256,
            "TileHeight": 256,
            "MatrixWidth": 1,
            "MatrixHeight": 1
          },
          {
            "Identifier": "1",
            "ScaleDenominator": 279541132.014,
            "TopLeftCorner": [
              -20037508.3428,
              20037508.3428
            ],
            "TileWidth": 256,
            "TileHeight": 256,
            "MatrixWidth": 2,
            "MatrixHeight": 2
          },
          {
            "Identifier": "2",
            "ScaleDenominator": 139770566.007,
            "TopLeftCorner": [
              -20037508.3428,
              20037508.3428
            ],
            "TileWidth": 256,
            "TileHeight": 256,
            "MatrixWidth": 4,
            "MatrixHeight": 4
          },
          {
            "Identifier": "3",
            "ScaleDenominator": 69885283.0036,
            "TopLeftCorner": [
              -20037508.3428,
              20037508.3428
            ],
            "TileWidth": 256,
            "TileHeight": 256,
            "MatrixWidth": 8,
            "MatrixHeight": 8
          },
          {
            "Identifier": "4",
            "ScaleDenominator": 34942641.5018,
            "TopLeftCorner": [
              -20037508.3428,
              20037508.3428
            ],
            "TileWidth": 256,
            "TileHeight": 256,
            "MatrixWidth": 16,
            "MatrixHeight": 16
          },
          {
            "Identifier": "5",
            "ScaleDenominator": 17471320.7509,
            "TopLeftCorner": [
              -20037508.3428,
              20037508.3428
            ],
            "TileWidth": 256,
            "TileHeight": 256,
            "MatrixWidth": 32,
            "MatrixHeight": 32
          },
          {
            "Identifier": "6",
            "ScaleDenominator": 8735660.37545,
            "TopLeftCorner": [
              -20037508.3428,
              20037508.3428
            ],
            "TileWidth": 256,
            "TileHeight": 256,
            "MatrixWidth": 64,
            "MatrixHeight": 64
          },
          {
            "Identifier": "7",
            "ScaleDenominator": 4367830.18772,
            "TopLeftCorner": [
              -20037508.3428,
              20037508.3428
            ],
            "TileWidth": 256,
            "TileHeight": 256,
            "MatrixWidth": 128,
            "MatrixHeight": 128
          },
          {
            "Identifier": "8",
            "ScaleDenominator": 2183915.09386,
            "TopLeftCorner": [
              -20037508.3428,
              20037508.3428
            ],
            "TileWidth": 256,
            "TileHeight": 256,
            "MatrixWidth": 256,
            "MatrixHeight": 256
          },
          {
            "Identifier": "9",
            "ScaleDenominator": 1091957.54693,
            "TopLeftCorner": [
              -20037508.3428,
              20037508.3428
            ],
            "TileWidth": 256,
            "TileHeight": 256,
            "MatrixWidth": 512,
            "MatrixHeight": 512
          },
          {
            "Identifier": "10",
            "ScaleDenominator": 545978.773466,
            "TopLeftCorner": [
              -20037508.3428,
              20037508.3428
            ],
            "TileWidth": 256,
            "TileHeight": 256,
            "MatrixWidth": 1024,
            "MatrixHeight": 1024
          },
          {
            "Identifier": "11",
            "ScaleDenominator": 272989.386733,
            "TopLeftCorner": [
              -20037508.3428,
              20037508.3428
            ],
            "TileWidth": 256,
            "TileHeight": 256,
            "MatrixWidth": 2048,
            "MatrixHeight": 2048
          },
          {
            "Identifier": "12",
            "ScaleDenominator": 136494.693366,
            "TopLeftCorner": [
              -20037508.3428,
              20037508.3428
            ],
            "TileWidth": 256,
            "TileHeight": 256,
            "MatrixWidth": 4096,
            "MatrixHeight": 4096
          },
          {
            "Identifier": "13",
            "ScaleDenominator": 68247.3466832,
            "TopLeftCorner": [
              -20037508.3428,
              20037508.3428
            ],
            "TileWidth": 256,
            "TileHeight": 256,
            "MatrixWidth": 8192,
            "MatrixHeight": 8192
          },
          {
            "Identifier": "14",
            "ScaleDenominator": 34123.6733416,
            "TopLeftCorner": [
              -20037508.3428,
              20037508.3428
            ],
            "TileWidth": 256,
            "TileHeight": 256,
            "MatrixWidth": 16384,
            "MatrixHeight": 16384
          },
          {
            "Identifier": "15",
            "ScaleDenominator": 17061.8366708,
            "TopLeftCorner": [
              -20037508.3428,
              20037508.3428
            ],
            "TileWidth": 256,
            "TileHeight": 256,
            "MatrixWidth": 32768,
            "MatrixHeight": 32768
          },
          {
            "Identifier": "16",
            "ScaleDenominator": 8530.9183354,
            "TopLeftCorner": [
              -20037508.3428,
              20037508.3428
            ],
            "TileWidth": 256,
            "TileHeight": 256,
            "MatrixWidth": 65536,
            "MatrixHeight": 65536
          },
          {
            "Identifier": "17",
            "ScaleDenominator": 4265.4591677,
            "TopLeftCorner": [
              -20037508.3428,
              20037508.3428
            ],
            "TileWidth": 256,
            "TileHeight": 256,
            "MatrixWidth": 131072,
            "MatrixHeight": 131072
          },
          {
            "Identifier": "18",
            "ScaleDenominator": 2132.72958385,
            "TopLeftCorner": [
              -20037508.3428,
              20037508.3428
            ],
            "TileWidth": 256,
            "TileHeight": 256,
            "MatrixWidth": 262144,
            "MatrixHeight": 262144
          },
          {
            "Identifier": "19",
            "ScaleDenominator": 1066.36479192,
            "TopLeftCorner": [
              -20037508.3428,
              20037508.3428
            ],
            "TileWidth": 256,
            "TileHeight": 256,
            "MatrixWidth": 524288,
            "MatrixHeight": 524288
          },
          {
            "Identifier": "20",
            "ScaleDenominator": 533.182395962,
            "TopLeftCorner": [
              -20037508.3428,
              20037508.3428
            ],
            "TileWidth": 256,
            "TileHeight": 256,
            "MatrixWidth": 1048576,
            "MatrixHeight": 1048576
          },
          {
            "Identifier": "21",
            "ScaleDenominator": 266.591197981,
            "TopLeftCorner": [
              -20037508.3428,
              20037508.3428
            ],
            "TileWidth": 256,
            "TileHeight": 256,
            "MatrixWidth": 2097152,
            "MatrixHeight": 2097152
          }
        ]
      }
    ]
  }
}

main.js代码如下：

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import WMTSCapabilities from 'ol/format/WMTSCapabilities.js';

const parser = new WMTSCapabilities();

fetch('data/WMTSCapabilities.xml')
  .then(function (response) {
    return response.text();
  })
  .then(function (text) {
    const result = parser.read(text);
    document.getElementById('log').innerText = JSON.stringify(result, null, 2);
  });

界面布局文件index.html代码如下：

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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <title>WMTS Capabilities Parsing</title>
    <link rel="stylesheet" href="node_modules/ol/ol.css">
    <style>
      .map {
        width: 100%;
        height: 400px;
      }
      .log-container {
        height: 400px;
        overflow: scroll;
      }
    </style>
  </head>
  <body>
    <pre class="log-container"><code id="log"></code></pre>
    <!-- Pointer events polyfill for old browsers, see https://caniuse.com/#feat=pointer -->
    <script src="https://cdn.jsdelivr.net/npm/elm-pep@1.0.6/dist/elm-pep.js"></script>
    <script type="module" src="main.js"></script>
  </body>
</html>