目标
将微服务的maven依赖统一由父pom管理，形成规范，避免jar冲突问题
原理
看下maven的依赖关系原理：
maven依赖管理
maven的依赖管理依据本地优先原则，如果本地项目scope定制,优先选择本地项目配置，并且exclusions本地未配置会继承父级的dependencyManagement配置。
整合
- 更改最高父pom，将spring-boot-dependencies以import方式引入，这是为了，后期会有自定义父pom管理使用
<?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.yeepay.power</groupId>
<artifactId>power-parent</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>pom</packaging>
<name>power-parent</name>
<description>power-parent</description>
<modules>
<module>power-core</module>
<module>power-facade</module>
<module>power-hessian</module>
</modules>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<power.version>1.0-SNAPSHOT</power.version>
<spring-boot.version>1.5.9.RELEASE</spring-boot.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.yeepay.power</groupId>
<artifactId>power-facade</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>com.yeepay.power</groupId>
<artifactId>power-core</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<!--剔除jar包冲突，并通过spring-boot-dependencies升级spring版本为4.3.13-->
<dependency>
<!-- Import dependency management from Spring Boot -->
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>${spring-boot.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.1.3</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.16</version>
</dependency>
<dependency>
<groupId>org.jboss.netty</groupId>
<artifactId>netty</artifactId>
<version>3.2.10.Final</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>16.0.1</version>
</dependency>
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<version>3.4.8</version>
</dependency>
<dependency>
<groupId>com.yeepay.g3.utils</groupId>
<artifactId>yeepay-soa</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>com.yeepay.infra</groupId>
<artifactId>infra-log4j2</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>com.yeepay.g3.starter</groupId>
<artifactId>yeepay-boss-starter</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
-
idea 通过maven Helper插件(可自行安装)，检查jar包冲突问题
maven helper
maven Helper会帮你找出对应的jar冲突，此时，就可以在1中的父pom中通过dependencyManagement指定本项目中的对应版本。
- 在子项目module中引用父pom管理，这大家应该都会了，举下项目例子，此时项目中引用的版本将会继承父pom的版本
<?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.yeepay.power</groupId>
<artifactId>power-core</artifactId>
<version>${power.version}</version>
<packaging>jar</packaging>
<name>power-core</name>
<description>power-core</description>
<parent>
<groupId>com.yeepay.power</groupId>
<artifactId>power-parent</artifactId>
<version>1.0-SNAPSHOT</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-log4j2</artifactId>
</dependency>
<dependency>
<groupId>com.yeepay.power</groupId>
<artifactId>power-facade</artifactId>
</dependency>
</dependencies>
<build>
<finalName>power-core</finalName>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
好了，完工了，可以看出将一些公用的版本管理、plugins可以方便管理，避免出现不必要的jar冲突，引发未知错误。
