我試圖讓這個物聯網模擬器運行：https : //github.com/TrivadisPF/various-bigdata-prototypes/tree/master/streaming-sources/iot-truck-simulator/impl
具體來說，我希望能夠根據自己的需要進行編輯、更改路線位置、添加不同的物聯網設備等。
我已經下載了 zip，設定了我的 IntelliJ 環境并嘗試構建和運行，但我不斷收到各種錯誤，其中最主要的是：
執行緒“main”中的例外 java.lang.RuntimeException：在 com.hortonworks.labutils.SensorEventsGenerator.generateTruckEventsStream(SensorEventsGenerator.java:43) at com.hortonworks.solution.Lab.main(Lab.java:277) 運行卡車流生成器時出錯) 引起：java.lang.NullPointerException at java.base/java.util.Arrays.sort(Arrays.java:1249) at com.hortonworks.simulator.impl.domain.transport.route.TruckRoutesParser.parseAllRoutes(TruckRoutesParser.java :77) 在 com.hortonworks.simulator.impl.domain.transport.TruckConfiguration.parseRoutes(TruckConfiguration.java:62) 在 com.hortonworks.simulator.impl.domain.transport.TruckConfiguration.initialize(TruckConfiguration.java:38) 在com.hortonworks.labutils.SensorEventsGenerator.generateTruckEventsStream(SensorEventsGenerator.java:25) ... 1 more
這將我引向 lab.java 中的“getResource”和“getPath”：
sensorEventsParam.setNumberOfEvents(1000);
sensorEventsParam.setDelayBetweenEvents(delayBetweenEventsMs);
System.out.println(Lab.class.getResource("/" "routes/neom").getPath());
sensorEventsParam.setRouteDirectory(Lab.class.getResource("/" "routes/neom").getPath());
sensorEventsParam.setTruckSymbolSize(10000);
SensorEventsGenerator sensorEventsGenerator = new SensorEventsGenerator();
sensorEventsGenerator.generateTruckEventsStream(sensorEventsParam);
我猜這是路徑的處理方式，因為 sensorEventsGenerator.generateTruckEvenetsStream 中的錯誤也指向 getRouteDirectory ，它再次回到 sensorEventsParam 中的 setRouteDirectory ...
無論如何，任何人都可以給我的任何見解或幫助將不勝感激。
聚甲醛：
<modelVersion>4.0.0</modelVersion>
<groupId>com.trivadis</groupId>
<version>1.0.0</version>
<artifactId>iot-truck-simulator</artifactId>
<properties>
<hadoop.miniclusters.version>0.0.15-SNAPSHOT</hadoop.miniclusters.version>
<scala.version>2.11</scala.version>
<kafka.version>2.2.0</kafka.version>
<activemq.version>5.7.0</activemq.version>
<rabbitmq.version>5.10.0</rabbitmq.version>
<avro.version>1.8.2</avro.version>
<akka.version>2.3.16</akka.version>
<jpmml.version>1.0.22</jpmml.version>
<commons.csv.version>1.2</commons.csv.version>
<commons.lang.version>3.7</commons.lang.version>
<slf4j.version>1.7.10</slf4j.version>
<storm.version>0.10.0.2.3.0.0-2557</storm.version>
<storm.hdfs.version>0.10.0.2.3.0.0-2557</storm.hdfs.version>
<javax.activation.version>1.2.0</javax.activation.version>
<jaxb.api.version>2.3.0</jaxb.api.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.eclipse.paho</groupId>
<artifactId>org.eclipse.paho.client.mqttv3</artifactId>
<version>1.1.1</version>
</dependency>
<!-- Kafka -->
<dependency>
<groupId>org.apache.kafka</groupId>
<artifactId>kafka-clients</artifactId>
<version>${kafka.version}</version>
</dependency>
<dependency>
<groupId>org.apache.avro</groupId>
<artifactId>avro</artifactId>
<version>1.10.1</version>
</dependency>
<dependency>
<groupId>com.microsoft.azure.sdk.iot</groupId>
<artifactId>iot-device-client</artifactId>
<version>1.29.0</version>
</dependency>
<!-- ActiveMQ -->
<dependency>
<groupId>org.apache.activemq</groupId>
<artifactId>activemq-core</artifactId>
<version>${activemq.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.rabbitmq/amqp-client -->
<dependency>
<groupId>com.rabbitmq</groupId>
<artifactId>amqp-client</artifactId>
<version>${rabbitmq.version}</version>
</dependency>
<dependency>
<groupId>com.typesafe.akka</groupId>
<artifactId>akka-remote_${scala.version}</artifactId>
<version>${akka.version}</version>
</dependency>
<dependency>
<groupId>org.jpmml</groupId>
<artifactId>pmml-evaluator</artifactId>
<version>${jpmml.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-csv</artifactId>
<version>${commons.csv.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>${commons.lang.version}</version>
</dependency>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>1.11</version>
</dependency>
<dependency>
<groupId>com.sun.activation</groupId>
<artifactId>javax.activation</artifactId>
<version>${javax.activation.version}</version>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>${jaxb.api.version}</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-core</artifactId>
<version>${jaxb.api.version}</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>${jaxb.api.version}</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-simple</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-idea-plugin</artifactId>
<version>2.2.1</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.2</version>
<configuration>
<source>11</source>
<target>11</target>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.6.0</version>
<executions>
<execution>
<goals>
<goal>java</goal>
</goals>
</execution>
</executions>
<configuration>
<mainClass>com.hortonworks.solution.Lab</mainClass>
<arguments>
<argument>mqtt</argument>
</arguments>
</configuration>
</plugin>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
<archive>
<manifest>
<mainClass>com.hortonworks.solution.Lab</mainClass>
</manifest>
</archive>
</configuration>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.avro</groupId>
<artifactId>avro-maven-plugin</artifactId>
<version>${avro.version}</version>
<executions>
<execution>
<phase>generate-sources</phase>
<goals>
<goal>schema</goal>
<goal>protocol</goal>
<goal>idl-protocol</goal>
</goals>
<configuration>
<fieldVisibility>private</fieldVisibility>
<sourceDirectory>${project.basedir}/src/main/avro</sourceDirectory>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>com.google.cloud.tools</groupId>
<artifactId>jib-maven-plugin</artifactId>
<version>1.0.0</version>
<configuration>
<from>
<image>openjdk:11.0-jre</image>
</from>
<to>
<image>registry.hub.docker.com/trivadis/iot-truck-simulator</image>
<auth>
<username>gschmutz</username>
</auth>
</to>
<container>
<mainClass>com.hortonworks.solution.Lab</mainClass>
<args>
<arg>-h</arg>
<arg>mosquitto-1</arg>
</args>
</container>
</configuration>
</plugin>
</plugins>
</build>
干杯，
克里斯
uj5u.com熱心網友回復：
原來這是java版本控制的問題。
在這里找到了一個很棒的頁面：https : //www.happycoders.eu/java/how-to-switch-multiple-java-versions-windows/
這讓我可以即時設定切換，從而使 git 中的命令完全正常作業。
如果這很明顯，請道歉
最親切的問候，
克里斯
轉載請註明出處，本文鏈接：https://www.uj5u.com/gongcheng/335826.html