11、基于 ssm 多模块项目案例

1、多项目模块划分

meinian-mobile-web: 美年旅游项目的用户系统
meinian-web: 美年旅游项目的管理员系统
meinian-service: 美年旅游项目的业务逻辑层
meinian-dao : 美年旅游项目的持久化层
meinian-bean : 美年旅游项目的Model 封装

2、项目搭建前配置分析

3、代码演示

代码和配置文件同单体ssm 一样。只不过做了拆分。

上传的为zip文件，由于不能上传zip文件所以存为了psd文件

4、settings.gradle 文件中

rootProject.name = 'meinian-parent'
include 'meinian-bean'
include 'meinian-dao'
include 'meinian-service'
include 'meinian-web'
include 'meinian-mobile-web'

5、在根工程 build.gradle 文件中抽取子模块的公共配置

group 'com.atguigu'
version '1.0-SNAPSHOT'

subprojects {
    //添加插件
    apply plugin: 'java'
    apply plugin: 'java-library'//支持api
    //编码环境jdk版本
    sourceCompatibility = 1.8
    //编译时jdk版本
    targetCompatibility = 1.8
    group 'com.atguigu'
    version '1.0-SNAPSHOT'

//配置外部属性
    ext {
        spring_version = "4.3.6.RELEASE"
    }

    //依赖的配置
    dependencies {
        //lombok
        testImplementation 'org.junit.jupiter:junit-jupiter-api:5.8.1'
        testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.8.1'
        implementation 'log4j:log4j:1.2.17'
        //implementation 'org.slf4j:slf4j-api:1.7.25'
    }
    test {
        useJUnitPlatform()
    }
}

6、在根工程的build.gradle 文件中配置各个模块的依赖信息

project("meinian-bean"){
    dependencies {
        api 'org.projectlombok:lombok:1.18.24'
    }
}
project("meinian-dao"){
    dependencies {
        api project(':meinian-bean')
        api 'org.mybatis:mybatis-spring:1.2.3'
        api 'com.alibaba:druid:1.0.15'
        api 'org.mybatis:mybatis:3.3.0'
        api 'mysql:mysql-connector-java:5.1.36'
    }
}
project("meinian-service"){
    dependencies {
        api project(':meinian-dao')
        api 'org.springframework:spring-web:4.1.7.RELEASE'
        api 'org.springframework:spring-test:4.0.5.RELEASE'
        api 'org.springframework:spring-jdbc:4.1.7.RELEASE'
        api 'org.aspectj:aspectjweaver:1.8.6'
    }
}
project("meinian-web"){
    apply plugin: 'war'
    dependencies {
        implementation project(':meinian-service')
        implementation 'org.springframework:spring-webmvc:4.1.7.RELEASE'
        implementation "com.fasterxml.jackson.core:jackson-databind:2.2.3"
        implementation "com.fasterxml.jackson.core:jackson-annotations:2.2.3"
        implementation "com.fasterxml.jackson.core:jackson-core:2.2.3"
        compileOnly 'javax.servlet:servlet-api:2.5'
        implementation 'jstl:jstl:1.2'
    }
}
project("meinian-mobile-web"){
    apply plugin: 'war'
    dependencies {
        //implementation project(':meinian-bean')
        implementation project(':meinian-service')
        implementation 'org.springframework:spring-webmvc:4.1.7.RELEASE'
        implementation "com.fasterxml.jackson.core:jackson-databind:2.2.3"
        implementation "com.fasterxml.jackson.core:jackson-annotations:2.2.3"
        implementation "com.fasterxml.jackson.core:jackson-core:2.2.3"
        implementation 'jstl:jstl:1.2'
    }
}

抽取之后，各子模块的build.gradle 文件就不用配置了。