java - 即使在添加类路径和主类之后也没有主清单属性 maven 构建
问题描述
在 jaspr2-0.0.1-SNAPSHOT.jar 中运行应用程序 jar no main manifest 属性时遇到错误。
在所有答案中,我发现应该提到添加类路径和主类。在我的 POM 中,我提到了两者。在构建之后,我发现 Manifest 文件没有附加主类,并且 Boot/INF 也没有添加到 jar 中。寻找构建适当 jar 的解决方案。下面是我的 POM.xml
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.4.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<groupId>com.abn</groupId>
<artifactId>jaspr2</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>jaspr2</name>
<description>Project for jcl validation</description>
<properties>
<java.version>1.8</java.version>
<antlr.version>4.8-1</antlr.version>
<targetDirectory>target</targetDirectory>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope> </dependency> -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.kie</groupId>
<artifactId>kie-api</artifactId>
<version>7.0.0.Final</version>
</dependency>
<dependency>
<groupId>org.drools</groupId>
<artifactId>drools-core</artifactId>
<version>7.0.0.Final</version>
</dependency>
<dependency>
<groupId>org.drools</groupId>
<artifactId>drools-decisiontables</artifactId>
<version>7.0.0.Final</version>
</dependency>
<dependency>
<groupId>org.antlr</groupId>
<artifactId>antlr4-runtime</artifactId>
<version>${antlr.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.antlr/antlr4-maven-plugin -->
<dependency>
<groupId>org.antlr</groupId>
<artifactId>antlr4-maven-plugin</artifactId>
<version>${antlr.version}</version>
</dependency>
<dependency>
<groupId>org.antlr</groupId>
<artifactId>antlr4</artifactId>
<version>${antlr.version}</version>
</dependency>
<dependency>
<groupId>org.antlr</groupId>
<artifactId>antlr4-master</artifactId>
<version>${antlr.version}</version>
<type>pom</type>
</dependency>
</dependencies>
<build>
<!-- <finalName>jaspr-application</finalName> -->
<pluginManagement>
<plugins>
<plugin>
<groupId>org.antlr</groupId>
<artifactId>antlr4-maven-plugin</artifactId>
<version>${antlr.version}</version>
<configuration>
<sourceDirectory>${basedir}/src</sourceDirectory>
</configuration>
<executions>
<execution>
<goals>
<goal>antlr4</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<version>${mojo.version}</version>
<executions>
<execution>
<phase>generate-sources</phase>
<goals>
<goal>add-source</goal>
</goals>
<configuration>
<sources>
<source>${basedir}/src/main/java/com/abn/jaspr/antlr/generated</source>
</sources>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<mainClass>com.abn.jaspr.Jaspr2Application</mainClass>
</configuration>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<jvmArguments>-Dfile.encoding=UTF8</jvmArguments>
<source>1.8</source>
<target>1.8</target>
<archive>
<manifest>
<addClasspath>true</addClasspath>
</manifest>
</archive>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<skipTests>true</skipTests>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
解决方案
对于 spring boot,您可以使用属性中的 start 类定义主类。
以下是您更新的属性
<properties>
<java.version>1.8</java.version>
<antlr.version>4.8-1</antlr.version>
<targetDirectory>target</targetDirectory>
<start-class>com.abn.jaspr.Jaspr2Application</start-class>
</properties>
希望这可以帮助
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