Question

我试图通过加入import org.geotools.data.postgis.WKBReader;来导入WKBReader。

WKBReader类应位于org.geotools.data.postgis according to the documentation，但我无法使用该包。

我尝试将gt-postgis存储库添加到pom.xml：

<properties>
   <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   <geotools.version>17.1</geotools.version>
</properties>
...
<dependency>
    <groupId>org.geotools</groupId>
    <artifactId>gt-postgis</artifactId>
    <version>${geotools.version}</version>
</dependency> 
...

......但没有运气。我总是得到错误：

无法在项目教程上执行目标：无法解析项目org.geotools的依赖项：tutorial：jar：1.0-SNAPSHOT：找不到org.geotools：gt {postgis：jar：17.1在http://download.java.net/maven/2中缓存在本地存储库中，在经过maven2-repository.dev.java.net的更新间隔或强制更新之前，不会重新尝试解析 - ＆gt; [帮助1]

我的问题：org.geotools:gt-postgis:jar:17.1在哪里？

我的完整pom.xml：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>

   <groupId>org.geotools</groupId>
   <artifactId>tutorial</artifactId>
   <version>1.0-SNAPSHOT</version>
   <packaging>jar</packaging>

   <name>tutorial</name>
   <url>http://maven.apache.org</url>

   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <geotools.version>17.1</geotools.version>
   </properties>

   <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.geotools</groupId>
            <artifactId>gt-shapefile</artifactId>
            <version>${geotools.version}</version>
        </dependency>
        <!--dependency>
            <groupId>org.geotools</groupId>
            <artifactId>gt-geojson</artifactId>
            <version>${geotools.version}</version>
        </dependency-->
        <dependency>
            <groupId>org.geotools</groupId>
            <artifactId>gt-postgis</artifactId>
            <version>${geotools.version}</version>
        </dependency>
        <dependency>
            <groupId>org.geotools</groupId>
            <artifactId>gt-swing</artifactId>
            <version>${geotools.version}</version>
        </dependency>
    </dependencies>

    <repositories>
      <repository>
          <id>maven2-repository.dev.java.net</id>
          <name>Java.net repository</name>
          <url>http://download.java.net/maven/2</url>
      </repository>

      <repository>
          <id>osgeo</id>
          <name>Open Source Geospatial Foundation Repository</name>
          <url>http://download.osgeo.org/webdav/geotools/</url>
      </repository>

      <repository> <!--Add the snapshot repository here-->
        <snapshots>
            <enabled>true</enabled>
        </snapshots>
        <id>opengeo</id>
        <name>OpenGeo Maven Repository</name>
        <url>http://repo.opengeo.org</url>
      </repository> 
    </repositories>

    <build>
        <plugins>
            <plugin>
                <inherited>true</inherited>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>


         <plugin>
            <artifactId>maven-assembly-plugin</artifactId>
            <configuration>
                <archive>
                    <manifest>
                        <addClasspath>true</addClasspath>
                        <mainClass>org.geotools.tutorial.quickstart.GeoJson2Shape</mainClass>
                    </manifest>
                </archive>
                <descriptorRefs>
                    <descriptorRef>jar-with-dependencies</descriptorRef>
                </descriptorRefs>
            </configuration>
            <executions>
                <execution>
                    <id>make-my-jar-with-dependencies</id>
                    <phase>package</phase>
                    <goals>
                        <goal>single</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>

        </plugins>
    </build>
</project>

mvn log：

BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.530 s
[INFO] Finished at: 2017-08-04T12:22:50+02:00
[INFO] Final Memory: 20M/299M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.2:compile (default-compile) on project tutorial: Compilation failure: Compilation failure:
[ERROR] /data/osm/maven/geotools/tutorial/src/main/java/org/geotools/tutorial/quickstart/WKB2Shape.java:[30,33] package org.geotools.data.postgis does not exist
[ERROR] /data/osm/maven/geotools/tutorial/src/main/java/org/geotools/tutorial/quickstart/WKB2Shape.java:[56,9] cannot find symbol
[ERROR] symbol:   class WKBReader
[ERROR] location: class org.geotools.tutorial.quickstart.WKB2Shape
[ERROR] /data/osm/maven/geotools/tutorial/src/main/java/org/geotools/tutorial/quickstart/WKB2Shape.java:[56,35] cannot find symbol
[ERROR] symbol:   class WKBReader
[ERROR] location: class org.geotools.tutorial.quickstart.WKB2Shape
[ERROR] /data/osm/maven/geotools/tutorial/src/main/java/org/geotools/tutorial/quickstart/WKB2Shape.java:[58,9] cannot find symbol
[ERROR] symbol:   class Geometry

[ERROR] location: class org.geotools.tutorial.quickstart.WKB2Shape

Answer 1

您要连接哪个存储库？你可以分享那些maven的细节。

像这样的事情

<repository>
          <id>osgeo</id>
          <name>Open Source Geospatial Foundation Repository</name>
          <url>http://download.osgeo.org/webdav/geotools/</url>
      </repository>

Answer 2

快速检查documentation表示您需要在pom中使用以下内容：

from django.db import models

class Customer(models.Model):
    name = models.CharField(max_length=30)
    latitude = models.FloatField(default=0)
    longitude = models.FloatField(default=0)

class Product(models.Model):
    name = models.CharField(max_length=30)
    weight = models.FloatField(default=0)

class Order(models.Model):
    customer = models.ForeignKey(Customer, on_delete=models.CASCADE)
    timestamp = models.DateTimeField(auto_now=True)
    line_items = models.ManyToManyField(Product, through='OrderItem')

class OrderItem(models.Model):
    product = models.ForeignKey(Product)
    order = models.ForeignKey(Order)
    quantity, price, discount, ...

org.geotools.data.postgis在哪里？

2 个答案: