java - spring boot主类，如何指定

Question

我正在使用 spring-boot 开发一个项目。我有自己的父 .pom 文件，所以我无法使用 spring-boot 父 pom。当我打包项目时，主类没有包含在 MANIFEST.MF 中，即使我在插件配置中指定了它。因此，当我尝试运行该 jar 时，java 说它找不到主类。

no main manifest attribute, in processor-interface-1.0.0.jar

<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>tld.domain.system</groupId>
<artifactId>processor-interface</artifactId>
<packaging>jar</packaging>
<version>1.0.0</version>

<parent>
    <groupId>tld.domain.maven</groupId>
    <artifactId>super-pom</artifactId>
    <version>[0.1,1.0)</version>
</parent>

<properties>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <log4j.version>2.9.1</log4j.version>
</properties>

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-dependencies</artifactId>
            <version>1.5.6.RELEASE</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-core</artifactId>
            <version>${log4j.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-api</artifactId>
            <version>${log4j.version}</version>
        </dependency>
    </dependencies>
</dependencyManagement>

<dependencies>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>com.oracle.jdbc</groupId>
        <artifactId>ojdbc7</artifactId>
        <version>12.1.0.2</version>
    </dependency>
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-lang3</artifactId>
        <version>3.7</version>
    </dependency>
</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <version>1.5.6.RELEASE</version>
            <configuration>
                <mainClass>tld.domain.system.boot.ProcessorInterface</mainClass>
            </configuration>
        </plugin>
    </plugins>
</build>

我深入研究了 .jar 文件中的 MANIFEST.MF，确实没有 main-class: 行。如何在 pom 中指定主类，以便将其包含在 MANIFEST.MF 中？

Answer 1

我有类似的设置，唯一的区别是我的 spring-boot-maven-plugin 执行与 repackage 阶段相关:

            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>my main class</mainClass>
                </configuration>
            </plugin>