geotools简介

官网

https://docs.geotools.org/latest/userguide/index.html

架构图

在这里插入图片描述

常用功能列表

Module	Purpose
`gt-render`	Implements of Java2D rendering engine to draw a map
`gt-jdbc`	Implements for accessing spatial database
`gt-main`	Implements for accessing spatial data
`gt-xml`	Implements of common spatial XML formats
`gt-cql`	Implements of Common Query Language for filters
`gt-main`	Interfaces for working with spatial information. Implements filter, feature, etc…
`jts`	Definition and implementation of Geometry
`gt-coverage`	Implementation for accessing raster information
`gt-referencing`	Implementation of co-ordinate location and transformation
`gt-metadata`	Implementation of identification and description
`gt-opengis`	Definition of interfaces for common spatial concepts

插件


Module	JAR	Plugin
`gt-render`
`gt-jdbc`	`gt-jdbc-db2`	Geometry in DB2
	`gt-jdbc-h2`	Pure Java “H2” database
	`gt-jdbc-mysql`	Geometry in MySQL
	`gt-jdbc-oracle`	Oracle SDO Geometry
	`gt-jdbc-postgis`	PostgreSQL extension PostGIS
	`gt-jdbc-sqlserver`	SQL Server
	`gt-jdbc-hana`	SAP HANA
	`gt-jdbc-terasdata`	Teradata
`gt-main`	`gt-shape`	Shapefile read/write support
	`gt-wfs`	WFS read/write support
`gt-xml`
`gt-cql`
`gt-main`
`jts`
`gt-coverage`	`gt-geotiff`	GeoTIFF raster format
	`gt-arcgrid`	arcgrid format
	`gt-mif`	MIF format
	`gt-image`	JPG, PNG, TIFF formats
`gt-referencing`	`epsg-access` .	Official EPSG database in Access
	`epsg-hsql`	Pure Java port of EPSG database
	`epsg-wkt`	Lightweight copy of EPSG codes
	`epsg-postgresql`	PostgreSQL port of EPSG database
`gt-metadata`
`gt-opengis`

扩展

除此之外，GeoTools团队在GeoTools的基础上实现了一些扩展，当然了，这些扩展是为了提供一些额外的功能。这些扩展是相互独立的，我们可以直接在项目中使用。

JAR	Extension
`gt-graph`	Work with graph and network traversals
`gt-validation`	Quality assurance for spatial data
`gt-wms`	Web Map Server client
`gt-xsd`	Parsing/Encoding for common OGC schemas
`gt-brewer`	Generation of styles using color brewer

GeoTools团队为了支持GeoTools中的XML模块，将几个XML模式打包成JAR形式，方便开发者进行调用。

JAR	Schema
`net.opengis.ows`	open web services schema
`net.opengis.wfs`	web feature service
`net.opengis.wps`	web processing service schema
`net.opengis.wcs`	web coverage service schema
`net.opengis.wfs`	web feature service schema
`org.w3.xlink`	XLink schema

XSD解析器通过一系列XSD插件使用这些工具。这些插件指示如何使用Eclipse XSD库解析和编码额外的内容来解析XML模式文档，并提供“绑定”，显示如何解析和编码Java类，如String、Date、URL和Geometry。

JAR	Bindings
`gt-xsd-core`	Basic types defined by XML schema
`gt-xsd-fes`	filter 2.0
`gt-xsd-filter`	filter (used by OGC CAT and WFS)
`gt-xsd-kml`	keyhole markup language
`gt-xsd-wfs`	web feature service
`gt-xsd-wps`	web processing service
`gt-xsd-gml3`	geographic markup language 3
`gt-xsd-gml2`	geographic markup language 2
`gt-xsd-ows`	open web services
`gt-xsd-wcs`	web coverage service
`gt-xsd-wms`	web map service
`gt-xsd-sld`	style layer descriptor

以下是GeoTools不支持的扩展，你也可以使用Maven下载它们来使用。

Unsupported	Purpose
`gt-swt`	Standard widget toolkit interactive map
`gt-swing`	Swing interactive map
`gt-oracle`	retired oracle support
`gt-postgis`	retired PostGIS support
`gt-db2`	retired db2 support
`gt-wps`	Web Processing Service client
`gt-process`	Job system for spatial data

geotools引用

maven项目中引用值得注意的地方

1 在pom中配置仓库


<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>
    <!--GeoServer-->
     <repository>
       <id>GeoSolutions</id>
       <url>http://maven.geo-solutions.it/</url>
     </repository>
</repositories>

2 如果setting中使用了阿里云镜像设置不起作用

<mirror> 
<!--该镜像的唯一标识符。id用来区分不同的mirror元素。 -->
    <id>nexus-aliyun</id>
    <!--*指的是访问任何仓库都使用我们的私服-->
     <mirrorOf>*,!osgeo,!GeoSolutions,!osgeo-snapshot,!alfresco</mirrorOf>

    <!--镜像名称-->
    <name>Nexus aliyun</name>
    <!--该镜像的URL。构建系统会优先考虑使用该URL，而非使用默认的服务器URL-->
    <url>http://maven.aliyun.com/nexus/content/groups/public</url>
</mirror>