GraphStream - 未找到有效显示
GraphStream - No valid display found
我正在关注 graphStream 的 official tutorial。
我正在尝试 运行 从那里获取的示例代码:
import org.graphstream.graph.*;
import org.graphstream.graph.implementations.*;
public class Tutorial1 {
public static void main(String args[]) {
Graph graph = new SingleGraph("Tutorial 1");
graph.addNode("A");
graph.addNode("B");
graph.addNode("C");
graph.addEdge("AB", "A", "B");
graph.addEdge("BC", "B", "C");
graph.addEdge("CA", "C", "A");
graph.display();
}
}
我收到以下错误:
Exception in thread "main" java.lang.RuntimeException: Cannot launch viewer.
at org.graphstream.graph.implementations.AbstractGraph.display(AbstractGraph.java:212)
at org.graphstream.graph.implementations.AbstractGraph.display(AbstractGraph.java:204)
at org.test.Test.main(Test.java:23)
Caused by: org.graphstream.util.MissingDisplayException: No valid display found. Please check your System.setProperty("org.graphstream.ui") statement.
at org.graphstream.util.Display.getDefault(Display.java:79)
at org.graphstream.graph.implementations.AbstractGraph.display(AbstractGraph.java:209)
... 2 more
我完全按照教程显示的那样做了。
我错过了什么?
“未找到有效显示。” 是什么意思
如果您在 Java
应用程序中执行此操作,则需要使用 1.3 版。
添加以下依赖项。 Version 1.3
gs-core
gs-algo
gs-ui
主要
import org.graphstream.graph.*;
import org.graphstream.graph.implementations.*;
public class Main {
public static void main(String args[]) {
Graph graph = new SingleGraph("Tutorial 1");
graph.setStrict(false);
graph.setAutoCreate( true );
graph.addNode("A");
graph.addNode("B");
graph.addNode("C");
graph.addEdge("AB", "A", "B");
graph.addEdge("BC", "B", "C");
graph.addEdge("CA", "C", "A");
graph.display();
}
}
POM
<?xml version="1.0" encoding="UTF-8"?>
<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>sed.home</groupId>
<artifactId>JavaTestArea</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<dependencies>
<dependency>
<groupId>org.graphstream</groupId>
<artifactId>gs-core</artifactId>
<version>1.3</version>
</dependency>
<dependency>
<groupId>org.graphstream</groupId>
<artifactId>gs-algo</artifactId>
<version>1.3</version>
</dependency>
<dependency>
<groupId>org.graphstream</groupId>
<artifactId>gs-ui</artifactId>
<version>1.3</version>
</dependency>
</dependencies>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>15</maven.compiler.source>
<maven.compiler.target>15</maven.compiler.target>
</properties>
</project>
输出
如果您使用 2.0 版,则需要在 JavaFX
、Swing
或 Android
应用程序中完成。
我正在关注 graphStream 的 official tutorial。 我正在尝试 运行 从那里获取的示例代码:
import org.graphstream.graph.*;
import org.graphstream.graph.implementations.*;
public class Tutorial1 {
public static void main(String args[]) {
Graph graph = new SingleGraph("Tutorial 1");
graph.addNode("A");
graph.addNode("B");
graph.addNode("C");
graph.addEdge("AB", "A", "B");
graph.addEdge("BC", "B", "C");
graph.addEdge("CA", "C", "A");
graph.display();
}
}
我收到以下错误:
Exception in thread "main" java.lang.RuntimeException: Cannot launch viewer.
at org.graphstream.graph.implementations.AbstractGraph.display(AbstractGraph.java:212)
at org.graphstream.graph.implementations.AbstractGraph.display(AbstractGraph.java:204)
at org.test.Test.main(Test.java:23)
Caused by: org.graphstream.util.MissingDisplayException: No valid display found. Please check your System.setProperty("org.graphstream.ui") statement.
at org.graphstream.util.Display.getDefault(Display.java:79)
at org.graphstream.graph.implementations.AbstractGraph.display(AbstractGraph.java:209)
... 2 more
我完全按照教程显示的那样做了。
我错过了什么?
“未找到有效显示。” 是什么意思
如果您在 Java
应用程序中执行此操作,则需要使用 1.3 版。
添加以下依赖项。 Version 1.3
gs-core
gs-algo
gs-ui
主要
import org.graphstream.graph.*;
import org.graphstream.graph.implementations.*;
public class Main {
public static void main(String args[]) {
Graph graph = new SingleGraph("Tutorial 1");
graph.setStrict(false);
graph.setAutoCreate( true );
graph.addNode("A");
graph.addNode("B");
graph.addNode("C");
graph.addEdge("AB", "A", "B");
graph.addEdge("BC", "B", "C");
graph.addEdge("CA", "C", "A");
graph.display();
}
}
POM
<?xml version="1.0" encoding="UTF-8"?>
<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>sed.home</groupId>
<artifactId>JavaTestArea</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<dependencies>
<dependency>
<groupId>org.graphstream</groupId>
<artifactId>gs-core</artifactId>
<version>1.3</version>
</dependency>
<dependency>
<groupId>org.graphstream</groupId>
<artifactId>gs-algo</artifactId>
<version>1.3</version>
</dependency>
<dependency>
<groupId>org.graphstream</groupId>
<artifactId>gs-ui</artifactId>
<version>1.3</version>
</dependency>
</dependencies>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>15</maven.compiler.source>
<maven.compiler.target>15</maven.compiler.target>
</properties>
</project>
输出
如果您使用 2.0 版,则需要在 JavaFX
、Swing
或 Android
应用程序中完成。