我正在使用Maven
并Vert.x
创建一个应用程序。当我在IDE(IntelliJ)中运行它时,一切都工作正常,但无法使用命令行使其正常工作。
我有一个Launcher
部署一些顶点的类,但是所有的顶点都存在相同的问题。
到目前为止,这是我尝试过的:
vertx run Launcher.java
vertx run com.packagename.Launcher.java
// user-content-service-0.1.jar create via: mvn clean package
run com.packagename.Launcher.java -cp target\user-content-service-0.1.jar
作为错误,我得到这个:
.../path/Launcher.java:8: error: cannot find symbol
private static final Logger logger = logManager.getLogger(Launcher.class);
symbol: variable LogManager
location: class com.packagename.Launcher
java.lang.RuntimeException: Compilation failed
...
问题似乎来自于编译器无法找到依赖关系的事实
这是我的pom.xml
样子:
<?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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.packagename</groupId>
<artifactId>user-content-service</artifactId>
<packaging>jar</packaging>
<version>0.1</version>
<name>Project - user-content-service</name>
<url>http://maven.apache.org</url>
<properties>
<vertx.version>[3.5.0,3.6)</vertx.version>
<java.version>1.8</java.version>
<maven-compiler-plugin.version>3.3</maven-compiler-plugin.version>
<log4j.version>[2.10.0,2.11)</log4j.version>
<junit.version>4.12</junit.version>
</properties>
<dependencies>
<dependency>
<groupId>io.vertx</groupId>
<artifactId>vertx-core</artifactId>
<version>${vertx.version}</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-slf4j-impl</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>io.vertx</groupId>
<artifactId>vertx-unit</artifactId>
<version>${vertx.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-java-sdk-dynamodb</artifactId>
<version>LATEST</version>
</dependency>
<dependency>
<groupId>io.vertx</groupId>
<artifactId>vertx-config</artifactId>
<version>${vertx.version}</version>
</dependency>
<dependency>
<groupId>io.vertx</groupId>
<artifactId>vertx-web</artifactId>
<version>${vertx.version}</version>
</dependency>
<dependency>
<groupId>io.vertx</groupId>
<artifactId>vertx-web-client</artifactId>
<version>${vertx.version}</version>
</dependency>
<dependency>
<groupId>guru.nidi.raml</groupId>
<artifactId>raml-tester</artifactId>
<version>0.9.1</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>${maven-compiler-plugin.version}</version>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
那是我的Launcher.java
文件:
package com.packagename;
import io.vertx.core.AbstractVerticle; import org.apache.logging.log4j.LogManager; import org.apache.logging.log4j.Logger;
public class Launcher extends AbstractVerticle {
private static final Logger logger = LogManager.getLogger(Launcher.class);
@Override
public void start() {
vertx.deployVerticle("com.packagename.DynamoDBVerticle", logRes -> {
if (logRes.succeeded()) {
vertx.deployVerticle("com.packagename.UploaderVerticle", uploaderRes -> {
if (uploaderRes.succeeded()) {
vertx.deployVerticle("com.packagename.ServerVerticle", serverRes -> {
if (!serverRes.succeeded()) {
logger.error("Could not start server");
}
});
}
else {
logger.error("Could not start uploader");
}
});
}
else {
logger.error("Could not start Dynamo");
}
});
} }
任何线索,我在这里可能做错了什么?
谢谢 !
您遇到了类路径问题;因为在打包阶段将jarfile与maven-jar打包在一起,所以只能在build目录中获取它。如果要使用命令行运行java -jar
,则应创建一个fat-jar(aka uber-jar,专门打包的jar文件,以便包含您的类和pom文件中声明的所有依赖项)。
您可以在打包阶段添加maven-shade-plugin来做到这一点,即:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>2.3</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<manifestEntries>
<Main-Class>io.vertx.core.Launcher</Main-Class>
<Main-Verticle>com.packagename.Launcher</Main-Verticle>
</manifestEntries>
</transformer>
<transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
<resource>META-INF/services/io.vertx.core.spi.VerticleFactory</resource>
</transformer>
</transformers>
<artifactSet/>
<outputFile>${project.build.directory}/${project.artifactId}-${project.version}-fat.jar</outputFile>
</configuration>
</execution>
</executions>
</plugin>
注意:您在vert.x Launcher(在胖子罐中用作Main-Class)和您自己的Launcher(实际上是Verticle)之间存在类名冲突:我建议将其重命名。
之后maven package
,您将可以执行以下操作:
java -jar target/user-content-service-0.1-fat.jar
检入vert.x示例以获取更多信息。
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