maven - spring boot maven 如何同时构建war和jar文件

Question

您好，我需要知道如何通过 mavan install 一次性构建 war 和 jar 文件

我需要使用war文件在google应用程序引擎上进行部署，并使用jar文件通过命令在jenkin上执行(java -jar ....)

这是 pom.xml 文件

<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.demo</groupId>
<artifactId>gae-demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.1.0.BUILD-SNAPSHOT</version>
</parent>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-legacy</artifactId>
        <version>1.0.3.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>net.kindleit</groupId>
        <artifactId>gae-runtime</artifactId>
        <version>${gae.version}</version>
        <type>pom</type>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>com.google.appengine</groupId>
        <artifactId>appengine-api-labs</artifactId>
        <version>${gae.version}</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>com.google.appengine</groupId>
        <artifactId>appengine-api-stubs</artifactId>
        <version>${gae.version}</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>com.google.appengine</groupId>
        <artifactId>appengine-testing</artifactId>
        <version>${gae.version}</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpclient</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies> 
<properties>
    <start-class>demo.Application</start-class>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <java.version>1.7</java.version>
    <m2eclipse.wtp.contextRoot>/</m2eclipse.wtp.contextRoot>
    <gae.version>1.8.8</gae.version>
    <gae.home>${settings.localRepository}/com/google/appengine/appengine-java-sdk/${gae.version}/appengine-java-sdk-${gae.version}</gae.home>
    <gae.application.version>test</gae.application.version>
</properties>
<build>
    <plugins>
    ...
       <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-deploy-plugin</artifactId>
            <executions>
                <execution>
                    <phase>deploy</phase>
                    <goals>
                        <goal>deploy-file</goal>
                    </goals>
                    <configuration>
                        <packaging>jar</packaging>
                        <generatePom>true</generatePom>
                        <url>${project.distributionManagement.repository.url}</url>
                        <artifactId>${project.artifactId}</artifactId>
                        <groupId>${project.groupId}</groupId>
                        <version>${project.version}</version>
                        <file>${project.build.directory}/${project.artifactId}-${project.version}.jar</file>
                    </configuration>
                </execution>
            </executions>
        </plugin>
        ...

这个 pom.xml 可以创建 war 和 jar 文件，但是如果我尝试通过这个命令执行 jar 文件 java -jar ...
它显示错误

Exception in thread "main" java.lang.NoClassDefFoundError: org.springframework/boot/SpringApplication

Answer 1

问题是 Spring Boot 的 Maven 插件不参与 jar 的创建，因此它没有被设置为可执行文件。

当 Spring Boot 重新打包一个 war 文件时，它就变成了可执行文件。这意味着，您可以使用 java -jar 运行 war ，而不是试图同时构建 jar 和 war 。 .