springboot多模块(modules)开发

忘是亡心i 2022-05-28 01:39 307阅读 0赞

##                                        springboot多模块(modules)开发 ##

这篇文章主要介绍了浅谈springboot多模块(modules)开发,详细的介绍了springboot多模块的实现，有兴趣的可以了解一下

为何模块开发

先举个栗子，同一张数据表，可能要在多个项目中或功能中使用，所以就有可能在每个模块都要搞一个mybatis去配置。如果一开始规定说这张表一定不可以改字段属性，那么没毛病。但是事实上， 一张表从项目开始到结束，不知道被改了多少遍，所以，你有可能在多个项目中去改mybatis改到吐血！

在举一个栗子，一个web服务里包含了多个功能模块，比如其中一个功能可能会消耗大量资源和时间，当用户调用这个功能的时候，可能会影响到其他功能的正常使用，这个时候，如果把各个功能模块分出来单独部署，然后通过http请求去调用，至于性能和响应速度，再单独去优化，将会非常爽！这也有利于将来的

分布式集群

根据当前的业务需求，我需要重构现有的web功能，多模块化，然后单独部署，基本架构示意图如下

![Center][]

怎样分模块

注意:下面配置的步骤是基于IntelliJ IDEA 2016.3.4(64)，不保证eclipse能成功。如果你还在使用eclipse，建议你删掉它，使用idea吧

1、创建maven主项目例如，springbootmodules，并删掉src文件   
2、右键项目分别创建三个module，dao,service1,service2   
3、将之前项目用到的依赖写在主项目的pom里，这里要注意   
4、dao层主要提供实体类，CURD接口和xml映射文件   
5、一定要在service1和service2配置数据库的相关信息，并添加spring的相关配置   
6、编写接口测试

相关代码

父项目pom

<?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.boot.lean</groupId>
     <artifactId>springbootquick</artifactId>
     <version>1.0-SNAPSHOT</version>
     <modules>
       <module>dao</module>
       <module>service1</module>
       <module>service2</module>
     </modules>
    
    
     <packaging>pom</packaging>
     <name>springbootquick</name>
     <parent>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-parent</artifactId>
       <version>1.5.1.RELEASE</version>
       <relativePath/> 
     </parent>
    
     <properties>
    
       <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <shadedClassifier>bin</shadedClassifier>
       <java.version>1.8</java.version>
    
    
       <mybatis-spring-boot>1.2.0</mybatis-spring-boot>
       <mysql-connector>5.1.39</mysql-connector>
     </properties>
    
    
     <dependencies>
    
       
       <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-web</artifactId>
       </dependency>
    
       
       <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
         <scope>test</scope>
       </dependency>
    
       
       <dependency>
         <groupId>org.mybatis.spring.boot</groupId>
         <artifactId>mybatis-spring-boot-starter</artifactId>
         <version>${mybatis-spring-boot}</version>
       </dependency>
    
       
       <dependency>
         <groupId>mysql</groupId>
         <artifactId>mysql-connector-java</artifactId>
         <version>${mysql-connector}</version>
       </dependency>
    
       
       <dependency>
         <groupId>junit</groupId>
         <artifactId>junit</artifactId>
         <version>4.12</version>
       </dependency>
       <dependency>
         <groupId>org.apache.commons</groupId>
         <artifactId>commons-pool2</artifactId>
         <version>2.4.2</version>
       </dependency>
       <dependency>
         <groupId>commons-beanutils</groupId>
         <artifactId>commons-beanutils</artifactId>
         <version>1.9.2</version>
       </dependency>
    
       <dependency>
         <groupId>commons-logging</groupId>
         <artifactId>commons-logging</artifactId>
         <version>1.2</version>
       </dependency>
    
       <dependency>
         <groupId>commons-dbcp</groupId>
         <artifactId>commons-dbcp</artifactId>
         <version>1.4</version>
       </dependency>
    
       <dependency>
         <groupId>net.sf.json-lib</groupId>
         <artifactId>json-lib</artifactId>
         <version>2.4</version>
         <classifier>jdk15</classifier>
       </dependency>
    
     </dependencies>
    
    
     <build>
       <plugins>
    
    
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-compiler-plugin</artifactId>
           <version>3.1</version>
           <configuration>
             <source>${java.version}</source>
             <target>${java.version}</target>
           </configuration>
         </plugin>
    
    
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-surefire-plugin</artifactId>
           <version>2.19.1</version>
           <configuration>
             <skipTests>true</skipTests>  
            </configuration>
         </plugin>
    
         <plugin>
           <groupId>org.mybatis.generator</groupId>
           <artifactId>mybatis-generator-maven-plugin</artifactId>
           <version>1.3.2</version>
           <configuration>
             <verbose>true</verbose>
             <overwrite>true</overwrite>
           </configuration>
           <dependencies>
             <dependency>
               <groupId>mysql</groupId>
               <artifactId>mysql-connector-java</artifactId>
               <version>5.1.30</version>
             </dependency>
           </dependencies>
         </plugin>
       </plugins>
     </build>
    </project>

dao模块的pom(里面配置了mybatis的逆向功能插件)

service1和service2的pom一样

需要注意的是，service模块里我用的是注解配置，如图所示

结构示意图

![Center 1][]

注意配置文件里的端口号

打包测试

在父项目下执行maven命令

service1和service2目录下分别会产生target文件，里面包含可执行jar包，分别执行

<table style="margin:0px 0px 10px; padding:0px; border-collapse:collapse; width:461px; max-width:100%; color:rgb(62,62,62); font-family:&quot;Hiragino Sans GB&quot;,&quot;Microsoft YaHei&quot;,Arial,sans-serif; font-size:16px; line-height:25.6px; widows:1; word-wrap:break-word!important"> 
 <tbody style="margin:0px; padding:0px; max-width:100%; word-wrap:break-word!important; border:0px!important; bottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.1em!important; outline:0px!important; overflow:visible!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; font-size:1em!important"> 
  <tr style="margin:0px; padding:0px; max-width:100%; word-wrap:break-word!important; border:0px!important; bottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.1em!important; outline:0px!important; overflow:visible!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; font-size:1em!important"> 
   <td style="margin:0px; padding:0.2em 0.46em; word-wrap:break-word!important; word-break:break-all; border:1px solid rgb(204,204,204); max-width:100%; outline:0px!important; bottom:auto!important; float:none!important; left:auto!important; line-height:1.1em!important; overflow:visible!important; right:auto!important; top:auto!important; vertical-align:baseline!important; font-size:1em!important; color:rgb(175,175,175)!important"> 
    <div style="margin:0px; padding-top:0px; padding-right:0.5em!important; padding-bottom:0px; padding-left:1em!important; max-width:100%; word-wrap:break-word!important; line-height:15.4px; font-size:14px; outline:0px!important; border-width:0px 3px 0px 0px!important; border-top-style:initial!important; border-right-style:solid!important; border-bottom-style:initial!important; border-left-style:initial!important; border-top-color:initial!important; border-right-color:rgb(108,226,108)!important; border-bottom-color:initial!important; border-left-color:initial!important; bottom:auto!important; float:none!important; height:auto!important; left:auto!important; overflow:visible!important; right:auto!important; text-align:right!important; top:auto!important; vertical-align:baseline!important; width:auto!important; white-space:pre!important">
      1 
    </div> 
    <div style="margin:0px; padding-top:0px; padding-right:0.5em!important; padding-bottom:0px; padding-left:1em!important; max-width:100%; word-wrap:break-word!important; line-height:15.4px; font-size:14px; outline:0px!important; border-width:0px 3px 0px 0px!important; border-top-style:initial!important; border-right-style:solid!important; border-bottom-style:initial!important; border-left-style:initial!important; border-top-color:initial!important; border-right-color:rgb(108,226,108)!important; border-bottom-color:initial!important; border-left-color:initial!important; bottom:auto!important; float:none!important; height:auto!important; left:auto!important; overflow:visible!important; right:auto!important; text-align:right!important; top:auto!important; vertical-align:baseline!important; width:auto!important; white-space:pre!important">
      2 
    </div> </td> 
   <td style="margin:0px; padding:0.2em 0.46em; word-wrap:break-word!important; word-break:break-all; border:1px solid rgb(204,204,204); max-width:100%; outline:0px!important; bottom:auto!important; float:none!important; left:auto!important; line-height:1.1em!important; overflow:visible!important; right:auto!important; top:auto!important; vertical-align:baseline!important; font-size:1em!important"> 
    <div style="margin:0px; padding-top:0px; padding-right:1em!important; padding-bottom:0px; padding-left:1em!important; max-width:100%; word-wrap:break-word!important; line-height:15.4px; font-size:14px; outline:0px!important; border:0px!important; bottom:auto!important; float:none!important; height:auto!important; left:auto!important; overflow:visible!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; white-space:pre!important"> 
     <code style="margin:3px auto 0px; padding:0px 0px 0px 5px; max-width:100%; border-left:3px solid rgb(108,226,108); line-height:20px; width:640px; clear:both; word-wrap:break-word!important; outline:0px!important; border-top-width:0px!important; border-right-width:0px!important; border-bottom-width:0px!important; bottom:auto!important; float:none!important; height:auto!important; left:auto!important; overflow:visible!important; right:auto!important; top:auto!important; vertical-align:baseline!important">java -jar service1-</code> 
     <code style="margin:3px auto 0px; padding:0px 0px 0px 5px; max-width:100%; border-left:3px solid rgb(108,226,108); line-height:20px; width:640px; clear:both; word-wrap:break-word!important; outline:0px!important; border-top-width:0px!important; border-right-width:0px!important; border-bottom-width:0px!important; bottom:auto!important; float:none!important; height:auto!important; left:auto!important; overflow:visible!important; right:auto!important; top:auto!important; vertical-align:baseline!important">1.0</code> 
     <code style="margin:3px auto 0px; padding:0px 0px 0px 5px; max-width:100%; border-left:3px solid rgb(108,226,108); line-height:20px; width:640px; clear:both; word-wrap:break-word!important; outline:0px!important; border-top-width:0px!important; border-right-width:0px!important; border-bottom-width:0px!important; bottom:auto!important; float:none!important; height:auto!important; left:auto!important; overflow:visible!important; right:auto!important; top:auto!important; vertical-align:baseline!important">-SNAPSHOT</code> 
    </div> 
    <div style="margin:0px; padding-top:0px; padding-right:1em!important; padding-bottom:0px; padding-left:1em!important; max-width:100%; word-wrap:break-word!important; line-height:15.4px; font-size:14px; outline:0px!important; border:0px!important; bottom:auto!important; float:none!important; height:auto!important; left:auto!important; overflow:visible!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; white-space:pre!important"> 
     <code style="margin:3px auto 0px; padding:0px 0px 0px 5px; max-width:100%; border-left:3px solid rgb(108,226,108); line-height:20px; width:640px; clear:both; word-wrap:break-word!important; outline:0px!important; border-top-width:0px!important; border-right-width:0px!important; border-bottom-width:0px!important; bottom:auto!important; float:none!important; height:auto!important; left:auto!important; overflow:visible!important; right:auto!important; top:auto!important; vertical-align:baseline!important">java -jar service2-</code> 
     <code style="margin:3px auto 0px; padding:0px 0px 0px 5px; max-width:100%; border-left:3px solid rgb(108,226,108); line-height:20px; width:640px; clear:both; word-wrap:break-word!important; outline:0px!important; border-top-width:0px!important; border-right-width:0px!important; border-bottom-width:0px!important; bottom:auto!important; float:none!important; height:auto!important; left:auto!important; overflow:visible!important; right:auto!important; top:auto!important; vertical-align:baseline!important">1.0</code> 
     <code style="margin:3px auto 0px; padding:0px 0px 0px 5px; max-width:100%; border-left:3px solid rgb(108,226,108); line-height:20px; width:640px; clear:both; word-wrap:break-word!important; outline:0px!important; border-top-width:0px!important; border-right-width:0px!important; border-bottom-width:0px!important; bottom:auto!important; float:none!important; height:auto!important; left:auto!important; overflow:visible!important; right:auto!important; top:auto!important; vertical-align:baseline!important">-SNAPSHOT</code> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

如果一切顺利的话，你可以得出下面的操作结果

![Center 2][]

[Center]: /images/20220528/26b5deddbdc343379f946218e5295341.png
[Center 1]: /images/20220528/ebd827df390d454ba4aea160bf5dac30.png
[Center 2]: /images/20220528/2cb970b7ace740d2a0ff03a615f565c4.png