spring boot 项目 maven 打包问题请教

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这是一个创建于 442 天前的主题，其中的信息可能已经有所发展或是发生改变。

分了多个模块，exam-web 里面有 @SpringBootApplication 类作为启动类，exam-web 里面和 exam-file 模块里面都有 Controller

在 idea 里面运行的时候，可以正常访问 exam-file 模块的 controller 接口，但 mvn install 打包以后，java -jar 启动 exam-web target 下的 jar 包，访问不到 exam-file 模块的接口, 解压 jar 包看了下是没有打包进去，exam-web 的 dependencies 里面已经添加了 exam-file 模块

想请教下，如何才能全部打包到一个 jar 里面

项目结构如下

├─.idea
├─.mvn
│  └─wrapper
├─config
├─exam-common
│  ├─src
├─exam-file
│  └─src
│      └─main
│          └─java
├─exam-web
│  └─src
│      ├─main
│      │  ├─java
│      │  └─resources
│      └─test
└─logs
    ├─debug
    ├─error
    └─info

各个 pom.xml 文件内容（太长，省略了一些第三方依赖包）：

最外层的父级 pom.xml

	<modules>
		<module>exam-common</module>
		<module>exam-web</module>
		<module>exam-file</module>
	</modules>
    
    	<dependencyManagement>
		<dependencies>
			<dependency>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-dependencies</artifactId>
				<version>${spring-boot.version}</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
			<dependency>
				<groupId>com.lddq</groupId>
				<artifactId>exam-web</artifactId>
				<version>0.0.1-SNAPSHOT</version>
			</dependency>
			<dependency>
				<groupId>com.lddq</groupId>
				<artifactId>exam-common</artifactId>
				<version>0.0.1-SNAPSHOT</version>
			</dependency>
			<dependency>
				<groupId>com.lddq</groupId>
				<artifactId>exam-file</artifactId>
				<version>0.0.1-SNAPSHOT</version>
			</dependency>
		</dependencies>
	</dependencyManagement>
    
    <build>
		<plugins>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>3.11.0</version>
				<configuration>
					<source>17</source>
					<target>17</target>
					<encoding>UTF-8</encoding>
					<annotationProcessorPaths>
						<path>
							<groupId>org.projectlombok</groupId>
							<artifactId>lombok</artifactId>
							<version>1.18.20</version>
						</path>
						<path>
							<groupId>org.mapstruct</groupId>
							<artifactId>mapstruct-processor</artifactId>
							<version>${mapstruct.version}</version>
						</path>
					</annotationProcessorPaths>
				</configuration>
			</plugin>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
				<version>${spring-boot.version}</version>
				<executions>
					<execution>
						<id>repackage</id>
						<goals>
							<goal>repackage</goal>
						</goals>
					</execution>
				</executions>
			</plugin>
		</plugins>
	</build>

exam-web pom.xml

	<dependencies>
        <dependency>
            <groupId>com.lddq</groupId>
            <artifactId>exam-common</artifactId>
        </dependency>
        <dependency>
            <groupId>com.lddq</groupId>
            <artifactId>exam-file</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>17</source>
                    <target>17</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>${spring-boot.version}</version>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>

exam-file pom.xml

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>${spring-boot.version}</version>
                <configuration>
                    <mainClass>com.lddq.exam.start.ExamApplication</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>

exam-common pom.xml

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <skip>true</skip>
                </configuration>
            </plugin>
        </plugins>
    </build>

8 条回复 • 2023-10-14 21:25:19 +08:00

zsdroid

2023-10-13 18:44:30 +08:00

没有扫描到呗。启动类里加上 exam-file 的包名。

zsdroid

2023-10-13 18:46:08 +08:00

另外<module>exam-file</module>放在<module>exam-web</module>前面

retanoj

2023-10-13 18:51:56 +08:00

在 idea 里运行的时候，观察一下运行的 java 命令。你会发现
java -classpath 里跟了一堆.jar 包

hai046

2023-10-13 19:00:19 +08:00

胖 jar
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>3.6.0</version>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>package</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<outputDirectory>${project.build.directory}/outputs</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>

ikas

2023-10-13 21:19:23 +08:00

parent :

<?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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>

<groupId>com.lddq</groupId>
<artifactId>exam-parent</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>pom</packaging>

<properties>
<java.version>17</java.version>
<maven.compiler.source>${java.version}</maven.compiler.source>
<maven.compiler.target>${java.version}</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<spring-boot.version>3.1.0</spring-boot.version>
</properties>

<modules>
<module>exam-common</module>
<module>exam-web</module>
<module>exam-file</module>
</modules>

<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>${spring-boot.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>

<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>3.3.1</version>
</plugin>

<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.11.0</version>
<configuration>
<showWarnings>true</showWarnings>
<showDeprecation>true</showDeprecation>
<annotationProcessorPaths>
<path>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.26</version>
</path>
</annotationProcessorPaths>
</configuration>
</plugin>

<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>${spring-boot.version}</version>
<executions>
<execution>
<id>repackage</id>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</pluginManagement>

<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
</plugin>

<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
</plugin>
</plugins>
</build>

</project>

common:

<?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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>

<parent>
<groupId>com.lddq</groupId>
<artifactId>exam-parent</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>

<packaging>jar</packaging>
<artifactId>exam-common</artifactId>

</project>

file:

<?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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>

<parent>
<groupId>com.lddq</groupId>
<artifactId>exam-parent</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>

<packaging>jar</packaging>
<artifactId>exam-file</artifactId>

<dependencies>
<dependency>
<groupId>com.lddq</groupId>
<artifactId>exam-common</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
</dependencies>

</project>

web:

<?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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>

<parent>
<groupId>com.lddq</groupId>
<artifactId>exam-parent</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>

<packaging>jar</packaging>
<artifactId>exam-web</artifactId>

<dependencies>
<dependency>
<groupId>com.lddq</groupId>
<artifactId>exam-common</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>

<dependency>
<groupId>com.lddq</groupId>
<artifactId>exam-file</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>

</dependencies>

<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>

</project>

----
java -jar exam-web-0.0.1-SNAPSHOT.jar
2023-10-13T21:16:58.496+08:00 INFO 18832 --- [ main] com.lddq.exam.start.ExamApplication : Started ExamApplication in 2.102 seconds (process running for 2.557)
2023-10-13T21:16:58.500+08:00 INFO 18832 --- [ main] com.lddq.exam.start.ExamApplication : hi file!

chocotan

2023-10-13 21:25:34 +08:00

spring-boot 的 maven plugin 从 parent 里面删掉

diagnostics

2023-10-14 11:05:01 +08:00

spring-boot-maven-plugin 是普通 Spring 应用打包所有依赖到同一个包的插件。
你在 Root 的 POM 里面定义了 build 里面用了它，意味着所有子模块都会继承这个插件。

正确做法是：在 Root 里移除 spring-boot-maven-plugin ，放到 Web 项目里面就好，其他的模块你不用来发布出去给其他人用的话，只定义一个 maven-compiler-plugin ，能够编译出来就可以了。。。

cxsz

2023-10-14 21:25:19 +08:00

@chocotan #6
@diagnostics #7

感谢，成功搞定😄