使用IDEA搭建gradle+SpringBoot多模块项目

当项目比较大，设计的业务比较多的时候，我们就会想到将项目进行拆分，类似于分布式。这样在更改某个模块时可以在不影响其它模块下更快的进行部署，方便开发/运维人员

以下是在windows平台下使用IDEA开发工具，gradle构建工具，SpringBoot来进行多模块项目简单搭建的步骤。

选择一个目录在该目录下新建 BingoProject ，打开cmd，输入gradle init 完成根目录的搭建

使用windows命令创建多个模块

创建BingoCommon模块

mkdir BingoCommon\src\main\java,BingoCommon\src\main\resources,BingoCommon\src\test\java,BingoCommon\src\test\resources

创建BingoWeb模块 

mkdir BingoWeb\src\main\java,BingoWeb\src\main\resources,BingoWeb\src\test\java,BingoWeb\src\test\resources 

打开IDEA导入BingoProject项目

修改BingoProject目录下的setting.gradlet添加如下代码

include 'BingoCommon','BingoWeb'

修改build.gradle配置文件

// 所有子项目的通用配置
subprojects {
    apply plugin: 'java'
    apply plugin: 'idea'

    version = '1.0.0'

    // JVM 版本号要求
    sourceCompatibility = 1.8
    targetCompatibility = 1.8

    // java编译的时候缺省状态下会因为中文字符而失败
    [compileJava,compileTestJava,javadoc]*.options*.encoding = 'UTF-8'

    repositories {
        mavenLocal()
        maven { url "http://maven.aliyun.com/nexus/content/groups/public" }
        mavenCentral()
    }

    jar {
        manifest {
            attributes("Implementation-Title": "Gradle")
        }
    }

    // 显示当前项目下所有用于 compile 的 jar.
    task listJars(description: 'Display all compile jars.') << {
        configurations.compile.each { File file -> println file.name }
    }

    gradle.projectsEvaluated {
        tasks.withType(JavaCompile) {
            options.compilerArgs << "-Xlint:unchecked" << "-Xlint:deprecation"
        }
    }
}

OK，两个模块搭建完毕，但是！！！只是整合到了这个BingoProject的gradle目录下

接下来需进行一下配置

在BingoCommon文件名上右击新建文件命名为build.gradle

添加以下配置

buildscript {
    repositories {

	//使用的仓库优先级
        mavenLocal()
        maven { url "http://maven.aliyun.com/nexus/content/groups/public" }
        maven { url "http://repo.spring.io/snapshot" }
        maven { url "http://repo.spring.io/milestone" }
        jcenter()
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:1.4.5.RELEASE")
    }
}

apply plugin: 'org.springframework.boot'

archivesBaseName = 'BingoCommon'


ext {
}

bootRepackage{
    enabled = false		//添加原因请参考http://docs.spring.io/autorepo/docs/spring-boot/1.4.5.RELEASE/reference/html/build-tool-plugins-gradle-plugin.html#build-tool-plugins-understanding-the-gradle-plugin
}

build{
}

dependencies {
}

configurations {
    // 所有需要忽略的包定义在此
    //all*.exclude group: 'commons-httpclient'
    //all*.exclude group: 'commons-beanutils', module: 'commons-beanutils'
}

同样再在BingoWeb项目下新建build.gradle并添加如下代码

buildscript {
    repositories {
        mavenLocal()
        maven { url "http://maven.aliyun.com/nexus/content/groups/public" }
        maven { url "http://repo.spring.io/snapshot" }
        maven { url "http://repo.spring.io/milestone" }
        jcenter()
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:1.4.5.RELEASE")
    }
}

apply plugin: 'org.springframework.boot'

archivesBaseName = 'BingoWeb'

ext {
    springBootVar = '1.4.5.RELEASE'
}

dependencies {
    compile project(':BingoCommon')			//要依赖的模块

    // spring boot
    compile "org.springframework.boot:spring-boot-starter-web:$springBootVar"

    testCompile "org.springframework.boot:spring-boot-starter-test:$springBootVar"
}

添加测试代码

package com.bingo.hello;

/**
 * Created by on 2017/10/17.
 */
public class SayHello {
    public void sayHello(){
        System.out.println(123);
    }
}

package com.bingo.test;

import com.bingo.hello.SayHello;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
public class TestWords {

    @RequestMapping(value = "/hello", method = RequestMethod.GET)
    @ResponseBody
    public String test1() {
        SayHello hello  = new SayHello();
        hello.sayHello();
        return "spring boot multiple modules test";
    }
}

package com.bingo.test;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.context.embedded.ConfigurableEmbeddedServletContainer;
import org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer;
import org.springframework.boot.web.support.SpringBootServletInitializer;
import org.springframework.context.annotation.ComponentScan;

/**
 * Created by bingo on 2017/10/17.
 */
@ComponentScan( basePackages = {"com.bingo"})               //多模块项目中各模块中的包名需保持一致，否则可能会出现找不到类的情况
@EnableAutoConfiguration
public class BingoApplication extends SpringBootServletInitializer implements EmbeddedServletContainerCustomizer {
    public static void main(String args[]) {
        SpringApplication.run(BingoApplication.class, args);
    }

    @Override
    public void customize(ConfigurableEmbeddedServletContainer container) {
        container.setPort(8080);
    }
}

启动main方法即可。

访问

查看BingoCommon中的类是否被调用

好啦，大工告成了！

原文请参考:http://blog.csdn.net/formularoom/article/details/70354562