java SpringBoot：运行一个多模块项目
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SpringBoot: running a multi module project
提问by Nu?ito de la Calzada
I have a basic SpringBoot app. using Spring Initializer, embedded Tomcat, Thymeleaf template engine, and package as an executable JAR file. is a multi-module project with Spring Boot, the project will have 3 modules. Here the parent module pom.xml
我有一个基本的 SpringBoot 应用程序。使用 Spring Initializer、嵌入式 Tomcat、Thymeleaf 模板引擎，并打包为可执行 JAR 文件。是一个带有 Spring Boot 的多模块项目，该项目将有 3 个模块。这里的父模块 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 http://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>1.5.3.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<groupId>com.tdkcloud</groupId>
<artifactId>tdk-cloud</artifactId>
<version>0.0.2-SNAPSHOT</version>
<packaging>pom</packaging>
<modules>
<module>tdk-core</module>
<module>tdk-batch</module>
<module>tdk-web</module>
</modules>
<dependencies>
<!-- Spring Boot dependencies -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<!-- Test dependencies -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>uk.co.jemos.podam</groupId>
<artifactId>podam</artifactId>
<version>7.0.5.RELEASE</version>
<scope>test</scope>
</dependency>
<!-- Logging dependencies -->
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
</dependency>
<!-- Email dependencies -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mail</artifactId>
</dependency>
<!-- Security dependencies -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<!-- Spring data -->
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
</dependency>
</dependencies>
</project>
Here the module core
这里是模块核心
<?xml version="1.0"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.tdkcloud</groupId>
<artifactId>tdk-cloud</artifactId>
<version>0.0.2-SNAPSHOT</version>
</parent>
<groupId>com.tdkcloud.core</groupId>
<artifactId>tdk-core</artifactId>
<packaging>jar</packaging>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<!-- Hibernate dependencies -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
</dependency>
<dependency>
<groupId>com.googlecode.libphonenumber</groupId>
<artifactId>libphonenumber</artifactId>
<version>8.4.3</version>
</dependency>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<!-- <version>1.10</version> -->
</dependency>
<dependency>
<groupId>com.fasterxml.Hymanson.core</groupId>
<artifactId>Hymanson-core</artifactId>
<!-- <version>2.9.0.pr3</version> -->
</dependency>
<dependency>
<groupId>com.fasterxml.Hymanson.core</groupId>
<artifactId>Hymanson-annotations</artifactId>
<!-- <version>2.9.0.pr3</version> -->
</dependency>
<dependency>
<groupId>com.fasterxml.Hymanson.core</groupId>
<artifactId>Hymanson-databind</artifactId>
</dependency>
<dependency>
<groupId>org.codehaus.Hymanson</groupId>
<artifactId>Hymanson-mapper-asl</artifactId>
<version>1.9.9</version>
</dependency>
</dependencies>
</project>
and here the module web:
这里是模块网站：
<?xml version="1.0"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.tdkcloud</groupId>
<artifactId>tdk-cloud</artifactId>
<version>0.0.2-SNAPSHOT</version>
</parent>
<groupId>com.tdkcloud.web</groupId>
<artifactId>tdk-web</artifactId>
<packaging>jar</packaging>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.8</java.version>
<start-class>com.tdkcloud.TdkCloudApplication</start-class>
</properties>
<dependencies>
<!-- tdk-core dependencies -->
<dependency>
<groupId>com.tdkcloud.core</groupId>
<artifactId>tdk-core</artifactId>
<version>0.0.2-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<!-- Webjars for JQuery and Bootstrap -->
<dependency>
<groupId>org.webjars</groupId>
<artifactId>bootstrap</artifactId>
<version>3.3.7-1</version>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>jquery</artifactId>
<version>3.2.0</version>
</dependency>
<!-- Spring Security -->
<dependency>
<groupId>org.thymeleaf.extras</groupId>
<artifactId>thymeleaf-extras-springsecurity4</artifactId>
<!-- <version>3.0.2.RELEASE</version> -->
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<configuration>
<archive>
<manifest>
<mainClass>com.tdkcloud.TdkCloudApplication</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<!-- <build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build> -->
</project>
from the parent root I generate all the modules using:
从父根我使用以下方法生成所有模块：
mvn clean package
But the problem is that the tdk-web-0.0.2-SNAPSHOT.jardoes not contain the tdk-core-0.0.2-SNAPSHOT.jarand then it fails on the startup
但问题是tdk-web-0.0.2-SNAPSHOT.jar不包含tdk-core-0.0.2-SNAPSHOT.jar然后在启动时失败
Here the maven result:
这里的maven结果：
MacBook-Pro-de-nunito:tdk-cloud calzada$ mvn clean package -Dmaven.test.skip=true
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO]
[INFO] tdk-cloud
[INFO] tdk-core
[INFO] tdk-batch
[INFO] tdk-web
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building tdk-cloud 0.0.2-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.6.1:clean (default-clean) @ tdk-cloud ---
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building tdk-core 0.0.2-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[WARNING] The POM for com.h2database:h2:jar:1.4.194 is missing, no dependency information available
[INFO]
[INFO] --- maven-clean-plugin:2.6.1:clean (default-clean) @ tdk-core ---
[INFO] Deleting /Users/calzada/Development/J2EE/workspace-sts-3.8.4.RELEASE/tdk-cloud/tdk-core/target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ tdk-core ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 1 resource
[INFO] Copying 1 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ tdk-core ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 52 source files to /Users/calzada/Development/J2EE/workspace-sts-3.8.4.RELEASE/tdk-cloud/tdk-core/target/classes
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ tdk-core ---
[INFO] Not copying test resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ tdk-core ---
[INFO] Not compiling test sources
[INFO]
[INFO] --- maven-surefire-plugin:2.18.1:test (default-test) @ tdk-core ---
[INFO] Tests are skipped.
[INFO]
[INFO] --- maven-jar-plugin:2.6:jar (default-jar) @ tdk-core ---
[INFO] Building jar: /Users/calzada/Development/J2EE/workspace-sts-3.8.4.RELEASE/tdk-cloud/tdk-core/target/tdk-core-0.0.2-SNAPSHOT.jar
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building tdk-batch 0.0.2-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.6.1:clean (default-clean) @ tdk-batch ---
[INFO] Deleting /Users/calzada/Development/J2EE/workspace-sts-3.8.4.RELEASE/tdk-cloud/tdk-batch/target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ tdk-batch ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory /Users/calzada/Development/J2EE/workspace-sts-3.8.4.RELEASE/tdk-cloud/tdk-batch/src/main/resources
[INFO] skip non existing resourceDirectory /Users/calzada/Development/J2EE/workspace-sts-3.8.4.RELEASE/tdk-cloud/tdk-batch/src/main/resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ tdk-batch ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to /Users/calzada/Development/J2EE/workspace-sts-3.8.4.RELEASE/tdk-cloud/tdk-batch/target/classes
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ tdk-batch ---
[INFO] Not copying test resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ tdk-batch ---
[INFO] Not compiling test sources
[INFO]
[INFO] --- maven-surefire-plugin:2.18.1:test (default-test) @ tdk-batch ---
[INFO] Tests are skipped.
[INFO]
[INFO] --- maven-jar-plugin:2.6:jar (default-jar) @ tdk-batch ---
[INFO] Building jar: /Users/calzada/Development/J2EE/workspace-sts-3.8.4.RELEASE/tdk-cloud/tdk-batch/target/tdk-batch-0.0.2-SNAPSHOT.jar
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building tdk-web 0.0.2-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.6.1:clean (default-clean) @ tdk-web ---
[INFO] Deleting /Users/calzada/Development/J2EE/workspace-sts-3.8.4.RELEASE/tdk-cloud/tdk-web/target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ tdk-web ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO] Copying 339 resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ tdk-web ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 25 source files to /Users/calzada/Development/J2EE/workspace-sts-3.8.4.RELEASE/tdk-cloud/tdk-web/target/classes
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ tdk-web ---
[INFO] Not copying test resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ tdk-web ---
[INFO] Not compiling test sources
[INFO]
[INFO] --- maven-surefire-plugin:2.18.1:test (default-test) @ tdk-web ---
[INFO] Tests are skipped.
[INFO]
[INFO] --- maven-jar-plugin:2.6:jar (default-jar) @ tdk-web ---
[INFO] Building jar: /Users/calzada/Development/J2EE/workspace-sts-3.8.4.RELEASE/tdk-cloud/tdk-web/target/tdk-web-0.0.2-SNAPSHOT.jar
[INFO]
[INFO] --- spring-boot-maven-plugin:1.5.3.RELEASE:repackage (default) @ tdk-web ---
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] tdk-cloud ....................................... SUCCESS [ 0.105 s]
[INFO] tdk-core ........................................ SUCCESS [ 1.634 s]
[INFO] tdk-batch ....................................... SUCCESS [ 0.114 s]
[INFO] tdk-web ......................................... SUCCESS [ 1.506 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.663 s
[INFO] Finished at: 2017-05-30T05:37:04+02:00
[INFO] Final Memory: 47M/539M
[INFO] ------------------------------------------------------------------------
MacBook-Pro-de-nunito:tdk-cloud calzada$
This is the error I got:
这是我得到的错误：
***************************
APPLICATION FAILED TO START
***************************
Description:
Field emailService in com.tdkcloud.web.controllers.AppErrorController required a bean of type 'com.tdkcloud.backend.service.EmailService' that could not be found.
Action:
Consider defining a bean of type 'com.tdkcloud.backend.service.EmailService' in your configuration.
I unzipped the jar and there is no class of the core module
我解压了jar，里面没有核心模块的类
adding the proposed code to the module web:
将建议的代码添加到模块 web 中：
<plugin>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<phase>install</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<outputDirectory>${project.build.directory}/lib</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>
I have the next error: Error resolving template "/tdk/login/login", template might not exist or might not be accessible by any of the configured Template Reso
我有下一个错误： Error resolving template "/tdk/login/login", template might not exist or might not be accessible by any of the configured Template Reso
but the template is there:
但模板在那里：
采纳答案by Venkata Santhosh Piduri
Recently, I have tried to implement one of my project structure/layout as maven multi module project.
最近，我尝试将我的项目结构/布局之一实现为 maven 多模块项目。
I followed following spring guide link, hope this will help you and others Official Spring multi module project link
我遵循以下 spring 指南链接，希望这对您和其他人有所帮助 官方 Spring 多模块项目链接
回答by ahll
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<executable>true</executable>
</configuration>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
I suggest this for creating a executable Jar.
我建议用这个来创建一个可执行的 Jar。
回答by Hyman
I think your @ComponentScan annotation is missing, or maybe wrong. (e.g.: @ComponentScan({"com.tdkcloud.web"}) will not find services in com.tdkcloud.backend package). Or maybe @Service annotation is missing from your EmailService.
我认为您的 @ComponentScan 注释丢失，或者可能是错误的。（例如：@ComponentScan({"com.tdkcloud.web"}) 不会在 com.tdkcloud.backend 包中找到服务）。或者，您的 EmailService 中可能缺少 @Service 注释。
So to solve this, your code need to look something like this:
所以为了解决这个问题，你的代码需要看起来像这样：
App.java (or Webconfig.java)
App.java（或 Webconfig.java）
@Configuration
@EnableWebMvc
@ComponentScan({"com.tdkcloud"})
@SpringBootApplication
public class App {
...
}
EmailService.java
电子邮件服务.java
public interface EmailService {
...
}
EmailServiceImpl.java
EmailServiceImpl.java
@Service
public class EmailServiceImpl {
...
}
回答by Jacob
Spring boot need a bean of type com.tdkcloud.backend.service.EmailServiceand don't find it. you have tow solution:
Spring boot 需要一个类型为com.tdkcloud.backend.service.EmailService的 bean而没有找到。你有两个解决方案：
1- first solution: create the bean in your application like this :
1-第一个解决方案：在您的应用程序中创建bean，如下所示：
@Bean
public EmailService EmailService() {
return new com.tdkcloud.backend.service.EmailServiceImpl();
}
2 - Second solution : use @ComponentScanlike this :
2 - 第二个解决方案：像这样使用@ComponentScan：
@ComponentScan(basePackages = {"com.tdkcloud.backend.service.EmailService"})
@SpringBootApplication
public class Application {
public static void main(String[] args) {
ApplicationContext ctx = SpringApplication.run(Application.class, args);
}
NOTE : you need have spring annotation in your package com.tdkcloud.backend.service.EmailService.
注意：您的包 com.tdkcloud.backend.service.EmailService 中需要有 spring 注释。
回答by JoB?N
you are missing versionin core module. try adding the following core module pom
你缺少version核心模块。尝试添加以下核心模块 pom
<version>0.0.2-SNAPSHOT</version>
so it becomes.
所以它变成了。
<groupId>com.tdkcloud.core</groupId>
<artifactId>tdk-core</artifactId>
<packaging>jar</packaging>
<version>0.0.2-SNAPSHOT</version>
回答by StanislavL
Try to add this.
尝试添加这个。
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
<configuration>
<classifier>exec</classifier>
</configuration>
</execution>
</executions>
</plugin>
Repackages existing JAR and WAR archives so that they can be executed from the command line using java -jar. With layout=NONE can also be used simply to package a JAR with nested dependencies (and no main class, so not executable).
重新打包现有的 JAR 和 WAR 存档，以便可以使用 java -jar 从命令行执行它们。使用 layout=NONE 也可以简单地用于打包具有嵌套依赖项的 JAR（没有主类，因此不可执行）。
Got from this
从拿到这个
回答by Sadiq Ali
I was facing the same issue earlier. I am guessing you are not running the jar in the exploded form. You probably need this plugin to pull the jars inside the bundle and execute the .original jar.
我之前也遇到过同样的问题。我猜你没有以爆炸形式运行罐子。您可能需要这个插件来将 jar 拉到包中并执行 .original jar。
<plugin>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<phase>install</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<outputDirectory>${project.build.directory}/lib</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>
This would bundle all the dependencies you have defined in your pom inside the jar. Hope this helps.
这会将您在 pom 中定义的所有依赖项捆绑在 jar 中。希望这可以帮助。
