总想对微服务架构做一个小小的总结，不知如何下手，最近觉得还是从搭建微服务的过程来入手，对于springboot的maven项目从构建多模块架构进而衍化为常用的微服务架构来做个记录吧。
首先，创建多个springboot项目，项目结构如图：
裁剪后如右侧
创建完成后，先解释一下：sharp-pom是父类工程，其他所有工程都要继承该工程，sharp-pom主要用来管理版本和声明一些jar的引用，本博主没有做聚合工程，这里说明一下聚合和继承的关系：继承是父POM为了抽取统一的配置信息和依赖版本控制，方便子POM直接引用，简化子POM的配置。聚合（多模块）则是为了方便一组项目进行统一的操作而作为一个大的整体，所以要真正根据这两者不同的作用来使用，不必为了聚合而继承同一个父POM，也不比为了继承父POM而设计成多模块。
接下来对各个模块进行处理
sharp-pom 只需要保留pom.xml文件即可，注意打包方式一定选择pom，具体内容如下：
1 xml version="1.0" encoding="UTF-8"?> 2 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 3 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 4 <modelVersion>4.0.0modelVersion> 5 6 <groupId>com.sharpgroupId> 7 <artifactId>sharp-pomartifactId> 8 <version>0.0.1-SNAPSHOTversion> 9 <packaging>pompackaging> 10 11 <name>sharp-pomname> 12 <description>Demo project for Spring Bootdescription> 13 14 <parent> 15 <groupId>org.springframework.bootgroupId> 16 <artifactId>spring-boot-starter-parentartifactId> 17 <version>2.1.0.RELEASEversion> 18 <relativePath/> 19 parent> 20 21 <properties> 22 <project.build.sourceEncoding>UTF-8project.build.sourceEncoding> 23 <project.reporting.outputEncoding>UTF-8project.reporting.outputEncoding> 24 <project.version>0.0.1-SNAPSHOTproject.version> 25 <java.version>1.8java.version> 26 <mysql.version>8.0.12mysql.version> 27 <mybatis.spring.version>1.3.2mybatis.spring.version> 28 <jdbc.version>5.1.1.RELEASEjdbc.version> 29 <druid.version>1.1.10druid.version> 30 <skipTests>trueskipTests> 31 properties> 32 35 36 <dependencyManagement> 37 <dependencies> 38 <dependency> 39 <groupId>com.alibabagroupId> 40 <artifactId>druidartifactId> 41 <version>${druid.version}version> 42 dependency> 43 <dependency> 44 <groupId>org.springframeworkgroupId> 45 <artifactId>spring-jdbcartifactId> 46 <version>${jdbc.version}version> 47 dependency> 48 <dependency> 49 <groupId>mysqlgroupId> 50 <artifactId>mysql-connector-javaartifactId> 51 <version>${mysql.version}version> 52 dependency> 53 <dependency> 54 <groupId>org.mybatis.spring.bootgroupId> 55 <artifactId>mybatis-spring-boot-starterartifactId> 56 <version>${mybatis.spring.version}version> 57 dependency> 58 dependencies> 59 60 dependencyManagement> 61 <distributionManagement> 62 <repository> 63 <id>my-releaseid> 64 <url>http://192.168.135.128:8081/repository/maven-releases/url> 65 repository> 66 <snapshotRepository> 67 <id>my-snapshotsid> 68 <url>http://192.168.135.128:8081/repository/maven-snapshots/url> 69 snapshotRepository> 70 distributionManagement> 71 project>
接下来的common、entity、mapper三个项目主要作为后面的依赖包均不需要启动类和测试类，都可以直接干掉，其中mapper有配置文件故而也要保留src/main/resources目录，其他两项只需要保留src/main/java即可，这些项目打包后是一个很普通的jar包，所以pom中不需要引入maven的打包插件，如果引入的话启动会报错。。。java:[1,17] 找不到符号、程序包。。。不存在之类的，因为只是一个普通包，我们直接把它干掉就行
然后层层依赖，没有什么特别的，需要注意的是，非微服务的多模块，controller层直接依赖service层，所以service层不需要启动，service层也可以直接搞成如common、entity一样的结构，只是一个普通的依赖包即可，如果是作为微服务的一个服务，那么它要想注册中心注册，就需要在该项目进行相关数据库、mybatis及dubbo、zookeeper等的配置，现在这一步我们只是作为一个普通jar包依赖，故而相关数据库等的配置都在访问层进行即在sharp-user项目中进行配置。
common项目pom，除了pom暂时无其他内容
1 xml version="1.0" encoding="UTF-8"?> 2 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 3 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 4 <modelVersion>4.0.0modelVersion> 5 6 <parent> 7 <groupId>com.sharpgroupId> 8 <artifactId>sharp-pomartifactId> 9 <version>0.0.1-SNAPSHOTversion> 10 parent> 11 <artifactId>sharp-commonartifactId> 12 <packaging>jarpackaging> 13 14 <name>sharp-commonname> 15 <description>公共模块description> 16 17 18 <dependencies> 19 <dependency> 20 <groupId>org.springframework.bootgroupId> 21 <artifactId>spring-boot-starterartifactId> 22 dependency> 23 24 <dependency> 25 <groupId>org.springframework.bootgroupId> 26 <artifactId>spring-boot-starter-testartifactId> 27 <scope>testscope> 28 dependency> 29 dependencies> 30 46 project>
entity 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>4.0.0modelVersion>
<parent>
<groupId>com.sharpgroupId>
<artifactId>sharp-pomartifactId>
<version>0.0.1-SNAPSHOTversion>
parent>
<artifactId>sharp-entityartifactId>
<packaging>jarpackaging>
<name>sharp-entityname>
<description>Demo project for Spring Bootdescription>
<dependencies>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starterartifactId>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-testartifactId>
<scope>testscope>
dependency>
<dependency>
<groupId>com.sharpgroupId>
<artifactId>sharp-commonartifactId>
<version>${project.parent.version}version>
dependency>
dependencies>
project>
mapper项目无特别之处
pom
1 xml version="1.0" encoding="UTF-8"?> 2 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 3 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 4 <modelVersion>4.0.0modelVersion> 5 <parent> 6 <groupId>com.sharpgroupId> 7 <artifactId>sharp-pomartifactId> 8 <version>0.0.1-SNAPSHOTversion> 9 parent> 10 <artifactId>sharp-mapperartifactId> 11 <packaging>jarpackaging> 12 13 <name>sharp-mappername> 14 <description>Demo project for Spring Bootdescription> 15 16 <dependencies> 17 <dependency> 18 <groupId>com.sharpgroupId> 19 <artifactId>sharp-commonartifactId> 20 <version>${project.parent.version}version> 21 dependency> 22 <dependency> 23 <groupId>com.sharpgroupId> 24 <artifactId>sharp-entityartifactId> 25 <version>${project.parent.version}version> 26 dependency> 27 <dependency> 28 <groupId>org.springframework.bootgroupId> 29 <artifactId>spring-boot-starterartifactId> 30 dependency> 31 <dependency> 32 <groupId>org.mybatis.spring.bootgroupId> 33 <artifactId>mybatis-spring-boot-starterartifactId> 34 dependency> 35 <dependency> 36 <groupId>org.springframework.bootgroupId> 37 <artifactId>spring-boot-starter-testartifactId> 38 <scope>testscope> 39 dependency> 40 dependencies> 41 42 59 60 project>
service-api pom
1 xml version="1.0" encoding="UTF-8"?> 2 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 3 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 4 <modelVersion>4.0.0modelVersion> 5 6 <artifactId>sharp-service-apiartifactId> 7 <packaging>jarpackaging> 8 9 <name>sharp-service-apiname> 10 <description>Demo project for Spring Bootdescription> 11 12 <parent> 13 <groupId>com.sharpgroupId> 14 <artifactId>sharp-pomartifactId> 15 <version>0.0.1-SNAPSHOTversion> 16 parent> 17 18 <properties> 19 <project.build.sourceEncoding>UTF-8project.build.sourceEncoding> 20 <project.reporting.outputEncoding>UTF-8project.reporting.outputEncoding> 21 <java.version>1.8java.version> 22 properties> 23 24 <dependencies> 25 <dependency> 26 <groupId>org.springframework.bootgroupId> 27 <artifactId>spring-boot-starterartifactId> 28 dependency> 29 <dependency> 30 <groupId>com.sharpgroupId> 31 <artifactId>sharp-entityartifactId> 32 <version>${project.parent.version}version> 33 dependency> 34 <dependency> 35 <groupId>org.springframework.bootgroupId> 36 <artifactId>spring-boot-starter-testartifactId> 37 <scope>testscope> 38 dependency> 39 dependencies> 40 41 42 project>
service pom
1 xml version="1.0" encoding="UTF-8"?> 2 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 3 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 4 <modelVersion>4.0.0modelVersion> 5 <parent> 6 <groupId>com.sharpgroupId> 7 <artifactId>sharp-pomartifactId> 8 <version>0.0.1-SNAPSHOTversion> 9 parent> 10 <artifactId>sharp-serviceartifactId> 11 <packaging>jarpackaging> 12 13 <name>sharp-sevicename> 14 <description>Demo project for Spring Bootdescription> 15 <dependencies> 16 28 <dependency> 29 <groupId>org.springframework.bootgroupId> 30 <artifactId>spring-boot-starter-webartifactId> 31 dependency> 32 <dependency> 33 <groupId>com.alibabagroupId> 34 <artifactId>druidartifactId> 35 dependency> 36 <dependency> 37 <groupId>org.springframeworkgroupId> 38 <artifactId>spring-jdbcartifactId> 39 dependency> 40 <dependency> 41 <groupId>com.sharpgroupId> 42 <artifactId>sharp-entityartifactId> 43 <version>${project.parent.version}version> 44 dependency> 45 <dependency> 46 <groupId>com.sharpgroupId> 47 <artifactId>sharp-commonartifactId> 48 <version>${project.parent.version}version> 49 dependency> 50 <dependency> 51 <groupId>com.sharpgroupId> 52 <artifactId>sharp-mapperartifactId> 53 <version>${project.parent.version}version> 54 dependency> 55 <dependency> 56 <groupId>com.sharpgroupId> 57 <artifactId>sharp-service-apiartifactId> 58 <version>${project.parent.version}version> 59 dependency> 60 <dependency> 61 <groupId>org.mybatis.spring.bootgroupId> 62 <artifactId>mybatis-spring-boot-starterartifactId> 63 dependency> 64 <dependency> 65 <groupId>mysqlgroupId> 66 <artifactId>mysql-connector-javaartifactId> 67 dependency> 68 69 <dependency> 70 <groupId>org.springframework.bootgroupId> 71 <artifactId>spring-boot-starter-testartifactId> 72 <scope>testscope> 73 dependency> 74 dependencies> 75 76 84 85 86 project>
web user pom
1 xml version="1.0" encoding="UTF-8"?> 2 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 3 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 4 <modelVersion>4.0.0modelVersion> 5 6 <artifactId>sharp-userartifactId> 7 <packaging>jarpackaging> 8 9 <name>sharp-username> 10 <description>Demo project for Spring Bootdescription> 11 12 <parent> 13 <groupId>com.sharpgroupId> 14 <artifactId>sharp-pomartifactId> 15 <version>0.0.1-SNAPSHOTversion> 16 parent> 17 18 <properties> 19 <project.build.sourceEncoding>UTF-8project.build.sourceEncoding> 20 <project.reporting.outputEncoding>UTF-8project.reporting.outputEncoding> 21 <java.version>1.8java.version> 22 properties> 23 24 <dependencies> 25 <dependency> 26 <groupId>com.alibabagroupId> 27 <artifactId>druidartifactId> 28 dependency> 29 <dependency> 30 <groupId>org.springframework.bootgroupId> 31 <artifactId>spring-boot-starter-webartifactId> 32 dependency> 33 <dependency> 34 <groupId>com.sharpgroupId> 35 <artifactId>sharp-entityartifactId> 36 <version>0.0.1-SNAPSHOTversion> 37 dependency> 38 <dependency> 39 <groupId>com.sharpgroupId> 40 <artifactId>sharp-commonartifactId> 41 <version>0.0.1-SNAPSHOTversion> 42 dependency> 43 <dependency> 44 <groupId>com.sharpgroupId> 45 <artifactId>sharp-service-apiartifactId> 46 <version>0.0.1-SNAPSHOTversion> 47 dependency> 48 49 <dependency> 50 <groupId>com.sharpgroupId> 51 <artifactId>sharp-serviceartifactId> 52 <version>0.0.1-SNAPSHOTversion> 53 dependency> 54 <dependency> 55 <groupId>com.sharpgroupId> 56 <artifactId>sharp-mapperartifactId> 57 <version>0.0.1-SNAPSHOTversion> 58 dependency> 59 <dependency> 60 <groupId>org.springframework.bootgroupId> 61 <artifactId>spring-boot-starter-testartifactId> 62 <scope>testscope> 63 dependency> 64 dependencies> 65 66 <build> 67 <plugins> 68 <plugin> 69 <groupId>org.springframework.bootgroupId> 70 <artifactId>spring-boot-maven-pluginartifactId> 71 plugin> 72 plugins> 73 build> 74 75 76 project>
application.properties
1 spring.profiles.active=local 2 3 spring.datasource.type=com.alibaba.druid.pool.DruidDataSource 4 spring.datasource.driver-class-name=com.mysql.jdbc.Driver 5 spring.datasource.url=jdbc:mysql://192.168.xxx.xxx:3306/sharp 6 spring.datasource.username=root 7 spring.datasource.password=******** 8 9 #mybatis配置 10 #指定全局配置文件位置 11 mybatis.config-location=classpath:mybatis/mybatis-config.xml 12 #指定别名包 13 mybatis.type-aliases-package=com.sharp.forward.entity 14 #指定xml文件位置 15 mybatis.mapper-locations=classpath:mybatis/mapper/*.xml
注意启动项上一定要加注解@MapperScan("com.sharp.forward.mapper")，其他都是常规的东西，结构如下：
测试OK！