【微服务架构 - 08 - Spring Cloud】01 创建统一的依赖管理

太过爱你忘了你带给我的痛 2022-03-22 14:42 180阅读 0赞

## 概述 ##

--------------------

Spring Cloud 项目都是基于 Spring Boot 开发的，并且都是使用 Maven 做项目管理工具。在实际开发中，我们一般都会创建一个依赖管理项目作为 Maven 的 Parent 项目使用，这样做可以极大的方便我们对 Jar 包版本的统一管理。

## 创建依赖管理项目 ##

创建一个工程名为 `hello-spring-cloud-dependencies` 的项目，`pom.xml` 配置文件如下：

<?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>2.0.2.RELEASE</version>
        </parent>
    
        <groupId>com.yuu</groupId>
        <artifactId>hello-spring-cloud-dependencies</artifactId>
        <version>1.0.0-SNAPSHOT</version>
        <packaging>pom</packaging>
    
        <name>hello-spring-cloud-dependencies</name>
        <inceptionYear>2019-Now</inceptionYear>
    
        <properties>
            
            <java.version>1.8</java.version>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    
            
            <spring-cloud.version>Finchley.SR2</spring-cloud.version>
        </properties>
    
        <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>
    
        <build>
            <plugins>
                
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <configuration>
                        <showWarnings>true</showWarnings>
                    </configuration>
                </plugin>
    
                
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-jar-plugin</artifactId>
                    <configuration>
                        <archive>
                            <addMavenDescriptor>false</addMavenDescriptor>
                        </archive>
                    </configuration>
                    <executions>
                        <execution>
                            <configuration>
                                <archive>
                                    <manifest>
                                        
                                        <addDefaultImplementationEntries>true</addDefaultImplementationEntries>
                                        <addDefaultSpecificationEntries>true</addDefaultSpecificationEntries>
                                        <addClasspath>true</addClasspath>
                                    </manifest>
                                </archive>
                            </configuration>
                        </execution>
                    </executions>
                </plugin>
    
                
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-resources-plugin</artifactId>
                </plugin>
    
                
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-install-plugin</artifactId>
                </plugin>
    
                
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-clean-plugin</artifactId>
                </plugin>
    
                
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-antrun-plugin</artifactId>
                </plugin>
    
                
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-dependency-plugin</artifactId>
                </plugin>
            </plugins>
    
            <pluginManagement>
                <plugins>
                    
                    <plugin>
                        <groupId>org.apache.maven.plugins</groupId>
                        <artifactId>maven-javadoc-plugin</artifactId>
                        <executions>
                            <execution>
                                <phase>prepare-package</phase>
                                <goals>
                                    <goal>jar</goal>
                                </goals>
                            </execution>
                        </executions>
                    </plugin>
    
                    
                    <plugin>
                        <groupId>net.alchim31.maven</groupId>
                        <artifactId>yuicompressor-maven-plugin</artifactId>
                        <version>1.5.1</version>
                        <executions>
                            <execution>
                                <phase>prepare-package</phase>
                                <goals>
                                    <goal>compress</goal>
                                </goals>
                            </execution>
                        </executions>
                        <configuration>
                            <encoding>UTF-8</encoding>
                            <jswarn>false</jswarn>
                            <nosuffix>true</nosuffix>
                            <linebreakpos>30000</linebreakpos>
                            <force>true</force>
                            <includes>
                                <include>**/*.js</include>
                                <include>**/*.css</include>
                            </includes>
                            <excludes>
                                <exclude>**/*.min.js</exclude>
                                <exclude>**/*.min.css</exclude>
                            </excludes>
                        </configuration>
                    </plugin>
                </plugins>
            </pluginManagement>
    
            
            <resources>
                <resource>
                    <directory>src/main/java</directory>
                    <excludes>
                        <exclude>**/*.java</exclude>
                    </excludes>
                </resource>
                <resource>
                    <directory>src/main/resources</directory>
                </resource>
            </resources>
        </build>
    
        <repositories>
            <repository>
                <id>aliyun-repos</id>
                <name>Aliyun Repository</name>
                <url>http://maven.aliyun.com/nexus/content/groups/public</url>
                <releases>
                    <enabled>true</enabled>
                </releases>
                <snapshots>
                    <enabled>false</enabled>
                </snapshots>
            </repository>
    
            <repository>
                <id>sonatype-repos</id>
                <name>Sonatype Repository</name>
                <url>https://oss.sonatype.org/content/groups/public</url>
                <releases>
                    <enabled>true</enabled>
                </releases>
                <snapshots>
                    <enabled>false</enabled>
                </snapshots>
            </repository>
            <repository>
                <id>sonatype-repos-s</id>
                <name>Sonatype Repository</name>
                <url>https://oss.sonatype.org/content/repositories/snapshots</url>
                <releases>
                    <enabled>false</enabled>
                </releases>
                <snapshots>
                    <enabled>true</enabled>
                </snapshots>
            </repository>
    
            <repository>
                <id>spring-snapshots</id>
                <name>Spring Snapshots</name>
                <url>https://repo.spring.io/snapshot</url>
                <snapshots>
                    <enabled>true</enabled>
                </snapshots>
            </repository>
            <repository>
                <id>spring-milestones</id>
                <name>Spring Milestones</name>
                <url>https://repo.spring.io/milestone</url>
                <snapshots>
                    <enabled>false</enabled>
                </snapshots>
            </repository>
        </repositories>
    
        <pluginRepositories>
            <pluginRepository>
                <id>aliyun-repos</id>
                <name>Aliyun Repository</name>
                <url>http://maven.aliyun.com/nexus/content/groups/public</url>
                <releases>
                    <enabled>true</enabled>
                </releases>
                <snapshots>
                    <enabled>false</enabled>
                </snapshots>
            </pluginRepository>
        </pluginRepositories>
    </project>

*  parent: 继承了 Spring Boot 的 Parent，表示我们是一个 Spring Boot 工程
 *  package：`pom`，表示该项目仅当做依赖项目，没有具体的实现代码
 *  `spring-cloud-dependencies`：再 `properties` 配置中预定义了版本号为 `Finchley.RC1`，表示我们的 Spring Cloud 使用的是 F 版
 *  build: 配置了项目所需的各种插件
 *  repositories: 配置项目下载依赖时的第三方库

在实际开发中，我们所有的项目都会依赖这个 `dependencies` 项目，整个项目周期中的所有第三方依赖的版本也都由该项目进行管理。