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Spring Boot 定制 parent 快速构建应用

2017-05-17  本文已影响603人  Anoyi

1/ 场景

有很多小应用,有一些公共的特点,比如说都依赖了spring-boot、log4j2、lombok、fastjson等等,为了方便开发,可以使用Maven定制一个parent来简化开发,统一管理第三方依赖的版本。(为后续的微服务做准备哦!)

2/ 构建 parent

2.1. 新建一个Maven工程,any-root。

2.2. 修改pom.xml,添加父工程的依赖,基本上子工程都会用到这些依赖。

<?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>cn.ictgu</groupId>
    <artifactId>any-root</artifactId>
    <version>1.0.RELEASE</version>
    <packaging>pom</packaging>

    <properties>
        <spring-boot.version>1.5.3.RELEASE</spring-boot.version>
        <java.version>1.8</java.version>
        <lombock.version>1.16.16</lombock.version>
        <fastjson.version>1.2.32</fastjson.version>
        <commons-lang3.version>3.5</commons-lang3.version>
        <jsoup.version>1.10.2</jsoup.version>
    </properties>

    <dependencyManagement>
        <dependencies>
            <!-- Spring Boot -->
            <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>

    <dependencies>

        <!-- web -->
        <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>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-tomcat</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <!-- Web 容器 undertow -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-undertow</artifactId>
        </dependency>

        <!-- 日志 Log4j2 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-log4j2</artifactId>
        </dependency>

        <!-- 面向切面 aop -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-aop</artifactId>
        </dependency>

        <!-- 代码简化 Lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>${lombock.version}</version>
        </dependency>

        <!-- JSON fastJSON -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>${fastjson.version}</version>
        </dependency>

        <!-- 通用工具类 Apache Commons-lang3 -->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>${commons-lang3.version}</version>
        </dependency>


        <!-- https://mvnrepository.com/artifact/org.jsoup/jsoup -->
        <dependency>
            <groupId>org.jsoup</groupId>
            <artifactId>jsoup</artifactId>
            <version>${jsoup.version}</version>
        </dependency>

    </dependencies>

    <!-- Package as an executable jar -->
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>

附加一篇文章: Maven实战(六)--- dependencies与dependencyManagement的区别

2.3. 依赖了log4j2,需要在resources目录下添加log4j2的配置文件

项目结构
<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="WARN" monitorInterval="30">
    <Properties>
        <Property name="PID">????</Property>
        <Property name="LOG_PATTERN">%clr{%d{yyyy-MM-dd HH:mm:ss.SSS}}{faint} %clr{%5p} %clr{${sys:PID}}{magenta} %clr{---}{faint} %clr{[%15.15t]}{faint} %clr{%-40.40c{1.}}{cyan} %clr{:}{faint} %m%n%xwEx</Property>
    </Properties>
    <Appenders>
        <Console name="Console" target="SYSTEM_OUT" follow="true">
            <PatternLayout pattern="${LOG_PATTERN}"/>
        </Console>
    </Appenders>
    <Loggers>
        <Logger name="org.hibernate.validator.internal.util.Version" level="warn" />
        <Logger name="org.apache.coyote.http11.Http11NioProtocol" level="warn" />
        <Logger name="org.apache.tomcat.util.net.NioSelectorPool" level="warn" />

        <Root level="info">
            <AppenderRef ref="Console"/>
        </Root>
    </Loggers>
</Configuration>

2.4 将父工程安装到本地仓库
方式一:使用 IDEA

点击 install

方式二:使用命令行,进入pom.xml所在目录,执行

mvn clean install

至此,父工程已安装完毕,其它工程依赖此工程即可添加父工程所有依赖。

3/ 快速构建子工程

3.1 新建一个Maven工程:avatar

3.2 修改pom.xml,继承父工程any-root

<?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>cn.ictgu</groupId>
    <artifactId>avatar</artifactId>
    <version>1.0-SNAPSHOT</version>

    <parent>
        <groupId>cn.ictgu</groupId>
        <artifactId>any-root</artifactId>
        <version>1.0.RELEASE</version>
    </parent>

</project>

IDEA 会自动导入父工程中的依赖:

相关依赖

3.3 添加启动类,测试lombok/log4j2

启动程序

4/ 子项目添加其它依赖,以spring-boot-actuator 为例:

4.1 在avatar项目的基础上,修改pom.xml,添加actuator的依赖

<?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>cn.ictgu</groupId>
    <artifactId>avatar</artifactId>
    <version>1.0-SNAPSHOT</version>

    <parent>
        <groupId>cn.ictgu</groupId>
        <artifactId>any-root</artifactId>
        <version>1.0.RELEASE</version>
    </parent>

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

</project>

4.2 添加配置文件,在resources下添加application.yml

management:
  security:
    enabled: false

作用是可以随意访问actuator下的所有端点

4.3 启动项目

启动日志

4.4 验证actuator下的端点,访问http://localhost:8080/beans
查看整个应用所有bean的依赖关系:

/beans

5/ 总结

将公共依赖定制为父工程,有如下好处:

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