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Geoserver的RESTful接口使用

Geoserver的RESTful接口使用

作者: 牛老师讲GIS | 来源:发表于2024-04-19 17:49 被阅读0次

概述

GeoServer提供了一个RESTful接口,客户端可以通过该接口获取有关实例的信息并进行配置更改。REST接口使用简单的HTTP调用,通过客户端就可以配置GeoServer,而无需使用Web管理接口。

Geoserver中的关系

工作区、数据源、图层、图层组以及样式之间的关系如下图所示。

image.png

可得知:

  • 工作区用于组织、管理和发布地图数据和地图服务。通过合理地使用工作区,可以更好地管理不同类型的地图数据和业务逻辑,提高地图服务的可用性和可维护性。

  • 数据源是地图数据在地理信息系统中的来源,可以是文件、数据库、网络等。数据源可以包含多个图层,每个图层可以代表一个地理要素或空间数据集。数据源必须属于某个工作区。

  • 图层是将数据源发布成地图服务,因此图层也必须属于某个工作区。

  • 图层组是将多个图层或图层组组合在一起,形成一个逻辑上的图层。由于图层或图层组属于不同的工作区,所以图层组可不属于工作区。

  • 样式是图层的样式定义,用于控制图层的显示效果,如颜色、透明度、线型、填充样式等,同一个样式可以被不同的图层引用,所以样式也可不属于工作区。

RESTful接口使用

1. 工作区

{
  "workspace": {
    "name": "lzugis-workspace"
  }
}

2. 数据存储

{
  "dataStore": {
    "name": "nyc",
    "connectionParameters": {
      "entry": [
        {"@key":"url","$":"file:/D:/data/china/capital.shp"}
      ]
    }
  }
}
{
  "dataStore": {
    "name": "china",
    "connectionParameters": {
      "entry": [
        {"@key":"url","$":"file:/D:/data/china"}
      ]
    }
  }
}
{
  "dataStore": {
    "name": "postgres",
    "connectionParameters": {
      "entry": [
        {"@key":"host","$":"localhost"},
        {"@key":"port","$":"5432"},
        {"@key":"database","$":"lzugis"},
        {"@key":"user","$":"postgres"},
        {"@key":"passwd","$":"passwd"},
        {"@key":"dbtype","$":"postgis"}
      ]
    }
  }
}

3. 图层

{
    "name": "layer_capital",
    "nativeName": "layer_capital",
    "namespace": {
        "name": "lzugis",
        "href": "http://localhost:8085/geoserver/rest/namespaces/lzugis.json"
    },
    "title": "layer_capital",
    "keywords": {
        "string": [
            "features",
            "layer_capital"
        ]
    },
    "nativeCRS": "GEOGCS[\"WGS 84\", \r\n  DATUM[\"World Geodetic System 1984\", \r\n    SPHEROID[\"WGS 84\", 6378137.0, 298.257223563, AUTHORITY[\"EPSG\",\"7030\"]], \r\n    AUTHORITY[\"EPSG\",\"6326\"]], \r\n  PRIMEM[\"Greenwich\", 0.0, AUTHORITY[\"EPSG\",\"8901\"]], \r\n  UNIT[\"degree\", 0.017453292519943295], \r\n  AXIS[\"Geodetic longitude\", EAST], \r\n  AXIS[\"Geodetic latitude\", NORTH], \r\n  AUTHORITY[\"EPSG\",\"4326\"]]",
    "srs": "EPSG:4326",
    "nativeBoundingBox": {
        "minx": 87.5760726928711,
        "maxx": 126.56706237792969,
        "miny": 19.970149993896484,
        "maxy": 45.6938591003418,
        "crs": "EPSG:4326"
    },
    "latLonBoundingBox": {
        "minx": 87.5760726928711,
        "maxx": 126.56706237792969,
        "miny": 19.970149993896484,
        "maxy": 45.6938591003418,
        "crs": "EPSG:4326"
    },
    "projectionPolicy": "FORCE_DECLARED",
    "enabled": true,
    "store": {
        "@class": "dataStore",
        "name": "postgres",
        "href": "http://localhost:8085/geoserver/rest/workspaces/lzugis/datastores/postgres.json"
    },
    "serviceConfiguration": false,
    "simpleConversionEnabled": false,
    "internationalTitle": "",
    "internationalAbstract": "",
    "maxFeatures": 0,
    "numDecimals": 0,
    "padWithZeros": false,
    "forcedDecimal": false,
    "overridingServiceSRS": false,
    "skipNumberMatched": false,
    "circularArcPresent": false,
    "attributes": {
        "attribute": [{
                "name": "name",
                "minOccurs": 0,
                "maxOccurs": 1,
                "nillable": true,
                "binding": "java.lang.String"
            },
            {
                "name": "geom",
                "minOccurs": 0,
                "maxOccurs": 1,
                "nillable": true,
                "binding": "org.locationtech.jts.geom.Point"
            },
            {
                "name": "lon",
                "minOccurs": 0,
                "maxOccurs": 1,
                "nillable": true,
                "binding": "java.lang.Double"
            },
            {
                "name": "lat",
                "minOccurs": 0,
                "maxOccurs": 1,
                "nillable": true,
                "binding": "java.lang.Float"
            }
        ]
    }
}

4. 样式

<?xml version="1.0" encoding="UTF-8"?>
<StyledLayerDescriptor version="1.0.0" 
 xsi:schemaLocation="http://www.opengis.net/sld StyledLayerDescriptor.xsd" 
 xmlns="http://www.opengis.net/sld" 
 xmlns:ogc="http://www.opengis.net/ogc" 
 xmlns:xlink="http://www.w3.org/1999/xlink" 
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <!-- a Named Layer is the basic building block of an SLD document -->
  <NamedLayer>
    <Name>default_line</Name>
    <UserStyle>
    <!-- Styles can have names, titles and abstracts -->
      <Title>Default Line</Title>
      <Abstract>A sample style that draws a line</Abstract>
      <!-- FeatureTypeStyles describe how to render different features -->
      <!-- A FeatureTypeStyle for rendering lines -->
      <FeatureTypeStyle>
        <Rule>
          <Name>rule1</Name>
          <Title>Blue Line</Title>
          <Abstract>A solid blue line with a 1 pixel width</Abstract>
          <LineSymbolizer>
            <Stroke>
              <CssParameter name="stroke">#0000FF</CssParameter>
            </Stroke>
          </LineSymbolizer>
        </Rule>
      </FeatureTypeStyle>
    </UserStyle>
  </NamedLayer>
</StyledLayerDescriptor>

说明

由于上面的操作都需要登录Geoserver后方可,所以在进行接口调用时需要设置登录信息,如在Postman中可进行如下设置。

image.png

如在前端代码调用,需要设置头信息Authorization,设置方式如下:

const auth = window.btoa(`admin:geoserver`);
const url = 'http://localhost:8085/geoserver/rest/layers'
fetch(url, { 
  method: 'get', 
  headers: { 'Authorization': `Basic ${auth}` 
}).then(res => res.json()).then(res => {
  console.log(res)
})

参考资料

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