Java+GeoTools(开源的Java GIS工具包)快速入门-实现读取shp文件并显示

港控/mmm° 2023-10-09 19:49 33阅读 0赞

## 场景 ##

### GeoTools ###

GeoTools 是一个开源的 Java GIS 工具包，可利用它来开发符合标准的地理信息系统。

GeoTools 提供了 OGC (Open Geospatial Consortium) 规范的一个实现来作为他们的开发。

官网地址:

[GeoTools The Open Source Java GIS Toolkit — GeoTools][GeoTools The Open Source Java GIS Toolkit _ GeoTools]

![ecf5cf3deec548af9ff2e17789d15b65.png][]

参考其quick start教程，实现集成到maven项目中并运行示例代码。

[Quickstart — GeoTools 30-SNAPSHOT User Guide][Quickstart _ GeoTools 30-SNAPSHOT User Guide]

点击Maven Quickstart

[Maven Quickstart — GeoTools 30-SNAPSHOT User Guide][Maven Quickstart _ GeoTools 30-SNAPSHOT User Guide]

注：

博客：  
[霸道流氓气质的博客\_CSDN博客-C\#,架构之路,SpringBoot领域博主][CSDN_-C_SpringBoot]

### 实现 ###

1、新建Maven项目并添加Geotools的依赖。

<dependency>
                <groupId>org.geotools</groupId>
                <artifactId>gt-shapefile</artifactId>
                <version>24-SNAPSHOT</version>
            </dependency>
            <dependency>
                <groupId>org.geotools</groupId>
                <artifactId>gt-swing</artifactId>
                <version>24-SNAPSHOT</version>
            </dependency>

注意这里的版本是24，目前官网最新的示例是30，但是30是需要java11的环境，这里的本地环境是java8

所以选择适配Java8的geotools的版本，这里选择24版本。

另外需要注意的是geotools在中央仓库中没有坐标，所以需要添加repository

<repositories>
            <repository>
                <id>osgeo</id>
                <name>OSGeo Release Repository</name>
                <url>https://repo.osgeo.org/repository/release/</url>
                <snapshots><enabled>false</enabled></snapshots>
                <releases><enabled>true</enabled></releases>
            </repository>
            <repository>
                <id>osgeo-snapshot</id>
                <name>OSGeo Snapshot Repository</name>
                <url>https://repo.osgeo.org/repository/snapshot/</url>
                <snapshots><enabled>true</enabled></snapshots>
                <releases><enabled>false</enabled></releases>
            </repository>
        </repositories>

添加位置

![30f78bfe685f49849eddb037e1be8d35.png][]

包括去寻找版本时可以去其仓库地址去查找

[Nexus Repository Manager][]

![7f314f90e6d94cbc9150b5887166b838.png][]

2、添加依赖并导入成功之后，参考官方示例代码，新建类

[https://docs.geotools.org/latest/userguide/\_downloads/f3a52bd26dc6252b6c7f5e7f9d4a6469/Quickstart.java][https_docs.geotools.org_latest_userguide_downloads_f3a52bd26dc6252b6c7f5e7f9d4a6469_Quickstart.java]

新建类

import org.geotools.data.FileDataStore;
    import org.geotools.data.FileDataStoreFinder;
    import org.geotools.data.simple.SimpleFeatureSource;
    import org.geotools.map.FeatureLayer;
    import org.geotools.map.Layer;
    import org.geotools.map.MapContent;
    import org.geotools.styling.SLD;
    import org.geotools.styling.Style;
    import org.geotools.swing.JMapFrame;
    import org.geotools.swing.data.JFileDataStoreChooser;
    
    import java.io.File;
    import java.io.IOException;
    
    public class HelloGeotools {
        public static void main(String[] args) throws IOException {
            File file = JFileDataStoreChooser.showOpenFile("shp", null);
            if (file == null) {
                return;
            }
    
            FileDataStore store = FileDataStoreFinder.getDataStore(file);
            SimpleFeatureSource featureSource = store.getFeatureSource();
    
            // Create a map content and add our shapefile to it
            MapContent map = new MapContent();
            map.setTitle("Quickstart");
    
            Style style = SLD.createSimpleStyle(featureSource.getSchema());
            Layer layer = new FeatureLayer(featureSource, style);
            map.addLayer(layer);
    
            // Now display the map
            JMapFrame.showMap(map);
        }
    }

运行main方法

![96b46ac94ec741c8a769bd37b750dc35.png][]

选择要预览的shp文件后

![837aadd65c3a4c62b40bb9da008e127d.png][]

[GeoTools The Open Source Java GIS Toolkit _ GeoTools]: https://geotools.org/
[ecf5cf3deec548af9ff2e17789d15b65.png]: https://img-blog.csdnimg.cn/ecf5cf3deec548af9ff2e17789d15b65.png
[Quickstart _ GeoTools 30-SNAPSHOT User Guide]: https://docs.geotools.org/latest/userguide/tutorial/quickstart/index.html
[Maven Quickstart _ GeoTools 30-SNAPSHOT User Guide]: https://docs.geotools.org/latest/userguide/tutorial/quickstart/maven.html
[CSDN_-C_SpringBoot]: https://blog.csdn.net/badao_liumang_qizhi
[30f78bfe685f49849eddb037e1be8d35.png]: https://img-blog.csdnimg.cn/30f78bfe685f49849eddb037e1be8d35.png
[Nexus Repository Manager]: https://repo.osgeo.org/#browse/browse:snapshot
[7f314f90e6d94cbc9150b5887166b838.png]: https://img-blog.csdnimg.cn/7f314f90e6d94cbc9150b5887166b838.png
[https_docs.geotools.org_latest_userguide_downloads_f3a52bd26dc6252b6c7f5e7f9d4a6469_Quickstart.java]: https://docs.geotools.org/latest/userguide/_downloads/f3a52bd26dc6252b6c7f5e7f9d4a6469/Quickstart.java
[96b46ac94ec741c8a769bd37b750dc35.png]: https://img-blog.csdnimg.cn/96b46ac94ec741c8a769bd37b750dc35.png
[837aadd65c3a4c62b40bb9da008e127d.png]: https://img-blog.csdnimg.cn/837aadd65c3a4c62b40bb9da008e127d.png