使用GeoTools调用WFS服务（Java）

Z时代
2024-01-10
分类：综合

/**

Title: TestBufferAnalysis2.java

Description:

Copyright: Copyright (c) 2020

package com.shuidao01.test.geotools;

import java.io.IOException;

import java.util.HashMap;

import java.util.Map;

import org.geotools.data.DataStore;

import org.geotools.data.DataStoreFinder;

import org.geotools.data.FeatureSource;

import org.geotools.data.Query;

import org.geotools.factory.CommonFactoryFinder;

import org.geotools.feature.FeatureCollection;

import org.geotools.feature.FeatureIterator;

import org.geotools.util.factory.GeoTools;

import org.locationtech.jts.geom.Coordinate;

import org.locationtech.jts.geom.GeometryFactory;

import org.locationtech.jts.geom.Point;

import org.opengis.feature.simple.SimpleFeature;

import org.opengis.feature.simple.SimpleFeatureType;

import org.opengis.filter.FilterFactory2;

import org.opengis.filter.spatial.DWithin;

- 空间分析测试（JKD1.8；GeoServer 2.15.2；Mavan配置，见备注。）

- @author shuidao01

- @date 2020年5月21日下午4:30:50

- @version 1.0

public class TestBufferAnalysis2 {

```
/**
```

```
 * WFS服务查询地址
```

```
 */
```

private static final String GET_CAPABILITIES = "http://localhost:8081/geoserver/wfs?service=WFS&version=1.0.0&request=GetCapabilities";

```
/**
```

```
 * 点周边查询
```

 * [@param](https://my.oschina.net/u/2303379) bufferVO

 * [@return](https://my.oschina.net/u/556800)

```
 */
```

```
  public static void getBufferGeo(){
```

 	    Map<String , String> connectionParameters = new HashMap<String , String>();

 	    connectionParameters.put("WFSDataStoreFactory:GET_CAPABILITIES_URL", GET_CAPABILITIES);

 	    FeatureCollection<SimpleFeatureType, SimpleFeature>  features = null;

```
 	try {
```

```
   		//创建连接
```

   		DataStore data = DataStoreFinder.getDataStore( connectionParameters );

```
   		//获取所有的图层
```

   		String typeNames[] = data.getTypeNames();

//指定要查询的图层（根据自己情况修改）

```
	  		String typeName = typeNames[12];
```

	  		SimpleFeatureType schema = data.getSchema( typeName );

			FeatureSource<SimpleFeatureType, SimpleFeature> source = data.getFeatureSource( typeName );

```
			//执行查询
```

			String geomName = schema.getGeometryDescriptor().getLocalName();

			FilterFactory2 filterFactory = CommonFactoryFinder.getFilterFactory2( GeoTools.getDefaultHints());

			GeometryFactory gf = new GeometryFactory();

```
		    //缓冲查询标记的点位
```

			Point ls = gf.createPoint(new Coordinate(119.9436 , 31.8056));

```
			//缓冲区查询( 1km 为1*0.01 )
```

			DWithin filter = filterFactory.dwithin(filterFactory.property( geomName ), filterFactory.literal(ls), 0.05, 	"km");

```
			//输出全部字段
```

			Query query = new Query(typeName, filter);

			features = source.getFeatures( query );

```
			//查询结果集
```

			FeatureIterator <SimpleFeature> featureIterator =  features.features();

			System.out.println("==========数据条数："+features.size());

```
			while( featureIterator.hasNext() ){
```

		    	SimpleFeature  feature =  featureIterator.next();

    	        System.out.println("==========输出结果："+feature.getProperties());

```
		    }
```

```
		} catch (IOException e) {
```

```
			// TODO Auto-generated catch block
```

```
			e.printStackTrace();
```

```
		}finally {
```

```
			if(features!=null) {
```

```
				features.features().close();
```

```
			}
```

```
		}
```

```
  }
```

  public static void main(String[] args) throws Exception {

```
	 getBufferGeo();
```

```
}
```

}

备注：

<geotools.version>23-SNAPSHOT</geotools.version>

    <dependency>
	    <groupId>org.geotools.ogc</groupId>
	    <artifactId>net.opengis.wfs</artifactId>
	    <version>${geotools.version}</version>
	</dependency>
	<dependency>
	   <groupId>org.geotools</groupId>
	   <artifactId>gt-wfs-ng</artifactId>
	   <version>${geotools.version}</version>
	 </dependency>
    <dependency>
	   <groupId>org.geotools.xsd</groupId>
	   <artifactId>gt-xsd-wfs</artifactId>
	   <version>${geotools.version}</version>
	</dependency>
	<dependency>
        <groupId>org.geotools</groupId>
        <artifactId>gt-epsg-hsql</artifactId>
        <version>${geotools.version}</version>             
    </dependency>
    <dependency>
        <groupId>org.geotools</groupId>
        <artifactId>gt-referencing</artifactId>
        <version>${geotools.version}</version>
    </dependency>    
    <!--geotools使用  end-->

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使用GeoTools调用WFS服务（Java）

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