【Spring Cloud 基础设施搭建系列】Spring Cloud Demo项目环境初始化

其他 2020-03-06 10:38:54 阅读次数: 0

文章目录

前提介绍

这个只是一个Spring Cloud 的个人学习项目，主要会涉及到一些Spring Cloud的基础设施，主要是个人的学习和记录。
这系列的Spring Cloud Demo中所使用的Spring Cloud为Greenwich.RC1，使用的Spring Boot的版本为2.1.1.RELEASE。大家可能要注意一下版本，不同的版本配置和名称上可能会不同。

项目环境初始化

parent pom管理

首先我们在项目的最外层创建一个parent的pom.xml文件，用来管理之后所有的module模块。

<?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.cc.cloud</groupId>
    <artifactId>spring-cloud-demo</artifactId>
    <packaging>pom</packaging>
    <version>1.0</version>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <java.version>1.8</java.version>
        <spring-cloud.version>Greenwich.RC1</spring-cloud.version>
    </properties>


    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.1.RELEASE</version>
        <relativePath/>
    </parent>


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

    <dependencies>
        <!-- spring boot test -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>


    <build>
        <plugins>
            <plugin>
                <!-- Spring Boot的Maven插件（Spring Boot Maven plugin）能够以Maven的方式为应用提供Spring Boot的支持 -->
                <!--
                Spring Boot Maven plugin的5个Goals
                    spring-boot:repackage，默认goal。在mvn package之后，再次打包可执行的jar/war，同时保留mvn package生成的jar/war为.origin
                    spring-boot:run，运行Spring Boot应用
                    spring-boot:start，在mvn integration-test阶段，进行Spring Boot应用生命周期的管理
                    spring-boot:stop，在mvn integration-test阶段，进行Spring Boot应用生命周期的管理
                    spring-boot:build-info，生成Actuator使用的构建信息文件build-info.properties
                -->
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

    <repositories>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>


</project>

common module

然后我们创建一个common module，用来放一些common的工具类或者其他公用的类。

<?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">
    <parent>
        <artifactId>spring-cloud-demo</artifactId>
        <groupId>com.cc.cloud</groupId>
        <version>1.0</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>cloud-common</artifactId>

    <dependencies>
        <!-- common dependency -->
        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
            <version>2.7</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
            <version>2.9.0</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.1.26</version>
        </dependency>
    </dependencies>

</project>

然后我们可以common module中的依赖版本交给parent pom去管理。

parent 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>

    <groupId>com.cc.cloud</groupId>
    <artifactId>spring-cloud-demo</artifactId>
    <packaging>pom</packaging>
    <version>1.0</version>
    <modules>
        <module>cloud-common</module>
    </modules>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <java.version>1.8</java.version>
        <spring-cloud.version>Greenwich.RC1</spring-cloud.version>
    </properties>


    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.1.RELEASE</version>
        <relativePath/>
    </parent>


    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!-- common dependency -->
            <dependency>
                <groupId>com.google.code.gson</groupId>
                <artifactId>gson</artifactId>
                <version>2.7</version>
            </dependency>
            <dependency>
                <groupId>com.fasterxml.jackson.core</groupId>
                <artifactId>jackson-annotations</artifactId>
                <version>2.9.0</version>
            </dependency>
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>fastjson</artifactId>
                <version>1.1.26</version>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>
        <!-- spring boot test -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>


    <build>
        <plugins>
            <plugin>
                <!-- Spring Boot的Maven插件（Spring Boot Maven plugin）能够以Maven的方式为应用提供Spring Boot的支持 -->
                <!--
                Spring Boot Maven plugin的5个Goals
                    spring-boot:repackage，默认goal。在mvn package之后，再次打包可执行的jar/war，同时保留mvn package生成的jar/war为.origin
                    spring-boot:run，运行Spring Boot应用
                    spring-boot:start，在mvn integration-test阶段，进行Spring Boot应用生命周期的管理
                    spring-boot:stop，在mvn integration-test阶段，进行Spring Boot应用生命周期的管理
                    spring-boot:build-info，生成Actuator使用的构建信息文件build-info.properties
                -->
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

    <repositories>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>


</project>

common 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">
    <parent>
        <artifactId>spring-cloud-demo</artifactId>
        <groupId>com.cc.cloud</groupId>
        <version>1.0</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>cloud-common</artifactId>

    <dependencies>
        <!-- common dependency -->
        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
        </dependency>
    </dependencies>

</project>

但这个时候我们在parent pom路径下使用mvn clean install会报如下的错误：

C:\Users\c\Desktop\spring-cloud-demo>mvn clean install
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO]
[INFO] spring-cloud-demo
[INFO] cloud-common
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building spring-cloud-demo 1.0
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:3.1.0:clean (default-clean) @ spring-cloud-demo ---
[INFO]
[INFO] --- spring-boot-maven-plugin:2.1.1.RELEASE:repackage (repackage) @ spring-cloud-demo ---
[INFO]
[INFO] --- maven-install-plugin:2.5.2:install (default-install) @ spring-cloud-demo ---
[INFO] Installing C:\Users\c\Desktop\spring-cloud-demo\pom.xml to D:\Maven\repository\com\cc\cloud\spring-cloud-demo\1.0\spring-cloud-demo-1.0.pom
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building cloud-common 1.0
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:3.1.0:clean (default-clean) @ cloud-common ---
[INFO] Deleting C:\Users\c\Desktop\spring-cloud-demo\cloud-common\target
[INFO]
[INFO] --- maven-resources-plugin:3.1.0:resources (default-resources) @ cloud-common ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.8.0:compile (default-compile) @ cloud-common ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-resources-plugin:3.1.0:testResources (default-testResources) @ cloud-common ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory C:\Users\c\Desktop\spring-cloud-demo\cloud-common\src\test\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.8.0:testCompile (default-testCompile) @ cloud-common ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-surefire-plugin:2.22.1:test (default-test) @ cloud-common ---
[INFO] No tests to run.
[INFO]
[INFO] --- maven-jar-plugin:3.1.0:jar (default-jar) @ cloud-common ---
[INFO] Building jar: C:\Users\c\Desktop\spring-cloud-demo\cloud-common\target\cloud-common-1.0.jar
[INFO]
[INFO] --- spring-boot-maven-plugin:2.1.1.RELEASE:repackage (repackage) @ cloud-common ---
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] spring-cloud-demo .................................. SUCCESS [  0.985 s]
[INFO] cloud-common ....................................... FAILURE [  1.338 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.868 s
[INFO] Finished at: 2019-09-13T17:31:48+08:00
[INFO] Final Memory: 35M/424M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:2.1.1.RELEASE:repackage (repackage) on project cloud-common: Execution repackage of goa
l org.springframework.boot:spring-boot-maven-plugin:2.1.1.RELEASE:repackage failed: Unable to find main class -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException
[ERROR]
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR]   mvn <goals> -rf :cloud-common

所以我们需要禁止spring-boot-maven-plugin插件在子模块cloud-common中使用
我们需要在cloud-common模块中加入一下配置：

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

cloud-common的pom.xml完整配置：

<?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">
    <parent>
        <artifactId>spring-cloud-demo</artifactId>
        <groupId>com.cc.cloud</groupId>
        <version>1.0</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>cloud-common</artifactId>

    <dependencies>
        <!-- common dependency -->
        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <skip>true</skip>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

再次执行命令就发现没有报错了。

C:\Users\c\Desktop\spring-cloud-demo>mvn clean install
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO]
[INFO] spring-cloud-demo
[INFO] cloud-common
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building spring-cloud-demo 1.0
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:3.1.0:clean (default-clean) @ spring-cloud-demo ---
[INFO]
[INFO] --- spring-boot-maven-plugin:2.1.1.RELEASE:repackage (repackage) @ spring-cloud-demo ---
[INFO]
[INFO] --- maven-install-plugin:2.5.2:install (default-install) @ spring-cloud-demo ---
[INFO] Installing C:\Users\c\Desktop\spring-cloud-demo\pom.xml to D:\Maven\repository\com\cc\cloud\spring-cloud-demo\1.0\spring-cloud-demo-1.0.pom
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building cloud-common 1.0
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:3.1.0:clean (default-clean) @ cloud-common ---
[INFO] Deleting C:\Users\c\Desktop\spring-cloud-demo\cloud-common\target
[INFO]
[INFO] --- maven-resources-plugin:3.1.0:resources (default-resources) @ cloud-common ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.8.0:compile (default-compile) @ cloud-common ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-resources-plugin:3.1.0:testResources (default-testResources) @ cloud-common ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory C:\Users\c\Desktop\spring-cloud-demo\cloud-common\src\test\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.8.0:testCompile (default-testCompile) @ cloud-common ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-surefire-plugin:2.22.1:test (default-test) @ cloud-common ---
[INFO] No tests to run.
[INFO]
[INFO] --- maven-jar-plugin:3.1.0:jar (default-jar) @ cloud-common ---
[INFO] Building jar: C:\Users\c\Desktop\spring-cloud-demo\cloud-common\target\cloud-common-1.0.jar
[INFO]
[INFO] --- spring-boot-maven-plugin:2.1.1.RELEASE:repackage (repackage) @ cloud-common ---
[INFO]
[INFO] --- maven-install-plugin:2.5.2:install (default-install) @ cloud-common ---
[INFO] Installing C:\Users\c\Desktop\spring-cloud-demo\cloud-common\target\cloud-common-1.0.jar to D:\Maven\repository\com\cc\cloud\cloud-common\1.0\cloud-common-1.0.ja
r
[INFO] Installing C:\Users\c\Desktop\spring-cloud-demo\cloud-common\pom.xml to D:\Maven\repository\com\cc\cloud\cloud-common\1.0\cloud-common-1.0.pom
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] spring-cloud-demo .................................. SUCCESS [  1.568 s]
[INFO] cloud-common ....................................... SUCCESS [  0.914 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.056 s
[INFO] Finished at: 2019-09-13T17:45:50+08:00
[INFO] Final Memory: 36M/449M
[INFO] ------------------------------------------------------------------------

源代码

https://gitee.com/cckevincyh/spring-cloud-demo/tree/init-project
Maven中如何禁止插件(plugin)在子模块(module)上执行

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