1、背景

首先，谈一谈什么是“springBoot业务组件化开发”，最近一直在开发一直面临这一个问题，就是相同的业务场景场景在一个项目中使用了，又需要再另外一个项目中复用，一遍又一遍的复制代码，然后想将该业务的代码在不同的项目中维护起来真的很难。

最开始想用微服务的方式来解决这个问题，但是觉得一套完整的微服务太重，而且目前微服务还处于振荡期（去年的微服务解决方案，今年国内直接都换成了阿里的技术解决方案），此外很多时候我们接私活，就是个单体的springboot项目，用不上微服务这种级别的项目，所以想来想去这条路不是很满足我的需求；再后来，想到单体的聚合架构，但是聚合架构的项目，个人觉得有时候也不是很好，一般的聚合项目就是基于某个具体实例架构下才能使用，换一个架构自己写的业务model就不能用了（比如你在suoyi框架下开发的模块业务包，在guns下可能就直接不能使用了）。

最后，想了一下，能不能单独开发一个项目，这个项目可以自己独立运行（微服务架构下用），也可以在单体项目中直接通过pom引入的方式，然后简单的配置一下，然后直接使用多好；查了一下网上没有现成的技术解决方案，问了同事，他说我这种思想属于SOA的一种实现，同时有第三包和聚合项目的影子在里面。也许有什么更好的技术解决方案，也希望各位能够不吝赐教。

补充一句，之所以说“业务组件化”开发，来源于Vue的思想，希望Java后端开发的业务也可像vue的组件一样去使用，这样多好

2、demo

2-1项目准备

①建一个Java项目项目，结构如下图：

②pom文件如下：

<?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>
 
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.1.RELEASE</version>
    </parent>
 
    <groupId>top.wp</groupId>
    <artifactId>cx-flow</artifactId>
    <version>1.0-SNAPSHOT</version>
 
 
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <mysql-connector-java.version>8.0.17</mysql-connector-java.version>
        <druid.version>1.1.21</druid.version>
        <mp.version>3.3.2</mp.version>
        <fastjson.version>1.2.70</fastjson.version>
        <jwt.version>0.9.1</jwt.version>
        <hutool.version>5.3.7</hutool.version>
        <lombok.versin>1.18.12</lombok.versin>
        <swagger.version>2.9.2</swagger.version>
        <swagger.bootstrap.ui.version>1.9.6</swagger.bootstrap.ui.version>
        <easypoi.version>4.2.0</easypoi.version>
        <jodconverter.version>4.2.0</jodconverter.version>
        <libreoffice.version>6.4.3</libreoffice.version>
        <justauth.version>1.15.6</justauth.version>
        <aliyun.oss.version>3.8.0</aliyun.oss.version>
        <qcloud.oss.version>5.6.23</qcloud.oss.version>
        <aliyun.sms.sdk.version>4.4.6</aliyun.sms.sdk.version>
        <aliyun.sms.esc.version>4.17.6</aliyun.sms.esc.version>
        <qcloud.sms.sdk.version>3.1.57</qcloud.sms.sdk.version>
    </properties>
 
 
    <dependencies>
        <!-- web -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
 
        <!--mybatis-plus-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>${mp.version}</version>
        </dependency>
 
        <!--数据库驱动-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql-connector-java.version}</version>
        </dependency>
 
        <!--数据库连接池-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>${druid.version}</version>
        </dependency>
 
        <!--hutool-->
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
            <version>${hutool.version}</version>
        </dependency>
 
        <!--lombok-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>${lombok.versin}</version>
        </dependency>
 
    </dependencies>
 
 
    <build>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
                <!-- <excludes>
                    <exclude>**/*.properties</exclude>
                    <exclude>**/*.xml</exclude>
                </excludes> -->
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                    <include>**/*.yml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
        </resources>
    </build>
 
 
</project>

③配置文件如下：主要是数据库和mybaits-plus的配置（其实可以不用这个配置文件，在这只是为了项目能够独立运行起来）

#服务配置
server:
  port: 8080
#spring相关配置
spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/cx-xn?autoReconnect=true&useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=CONVERT_TO_NULL&useSSL=false&serverTimezone=CTT&nullCatalogMeansCurrent=true
    username: 数据库账户
    password: 数据库密码
  servlet:
    multipart:
      max-request-size: 100MB
      max-file-size: 100MB
  jackson:
    time-zone: GMT+8
    date-format: yyyy-MM-dd HH:mm:ss.SSS
    locale: zh_CN
    serialization:
      # 格式化输出
      indent_output: false
 
#mybaits相关配置
mybatis-plus:
  mapper-locations: classpath*:top/wp/cx/**/mapping/*.xml, classpath:/META-INF/modeler-mybatis-mappings/*.xml
  configuration:
    map-underscore-to-camel-case: true
    cache-enabled: true
    lazy-loading-enabled: true
    multiple-result-sets-enabled: true
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
 
  global-config:
    banner: false
    db-config:
      id-type: assign_id
      table-underline: true
    enable-sql-runner: true
  configuration-properties:
    prefix:
    blobType: BLOB
    boolValue: TRUE

④启动入口（可以不用写，启动入口存在目的是让项目可以自己跑起来）

package top.wp.cx;
 
import cn.hutool.log.StaticLog;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
 
@SpringBootApplication
public class CXApplication {
    public static void main(String[] args) {
        SpringApplication.run(CXApplication.class, args);
        StaticLog.info(">>> " + CXApplication.class.getSimpleName() + " 启动成功!");
 
    }
}

⑤测试：entity、result

package top.wp.cx.modular.test.entity;
 
import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.Data;
 
 
@Data
@TableName("test")
public class Test {
 
    /**
     * 主键
     */
    @TableId(type = IdType.ASSIGN_ID)
    private Integer id;
 
    /**
     * 账号
     */
    private String name;
 
}

package top.wp.cx.modular.test.result;
 
import lombok.Data;
@Data
public class TestResult {
 
    private Integer id;
 
    private String name;
 
}

⑥测试mapper、xml、service和controller

package top.wp.cx.modular.test.mapper;
 
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import top.wp.cx.modular.test.entity.Test;
 
/**
 * 系统用户数据范围mapper接口
 *
 * @author xuyuxiang
 * @date 2020/3/13 15:46
 */
//@Mapper
public interface TestMapper extends BaseMapper<Test> {
}

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="top.wp.cx.modular.test.mapper.TestMapper">
 
</mapper>

package top.wp.cx.modular.test.service;
 
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.stereotype.Service;
import top.wp.cx.modular.test.entity.Test;
import top.wp.cx.modular.test.mapper.TestMapper;
 
/**
 * 一个service实现
 *
 * @author yubaoshan
 * @date 2020/4/9 18:11
 */
@Service
public class TestService extends ServiceImpl<TestMapper, Test> {
 
}

package top.wp.cx.modular.test.controller;
 
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import top.wp.cx.modular.test.entity.Test;
import top.wp.cx.modular.test.service.TestService;
 
import javax.annotation.Resource;
import java.util.List;
 
/**
 * 一个示例接口
 *
 * @author yubaoshan
 * @date 2020/4/9 18:09
 */
@RestController
@RequestMapping("/test")
public class TestController {
 
    @Resource
    private TestService testService;
 
    @GetMapping("")
    public List<Test> testResult(){
        return testService.list();
    }
 
    @GetMapping("/2")
    public String testResult2(){
        return "22";
    }
}

至此项目准备完成，其实就是简单见了一个测试项目，此时如果你按照上面的步骤，写了启动类和配置项信息，项目是可以独立运行的。

2-2项目打包、引入、运行

①将2-1中的测试项目进行打包：install右键第一个选项

②此时你的本地maven仓库会出现刚才的项目（当然前提是你的idea配置过本地的maven）

③新建另外一个项目cx-main

④pom文件如下：注意将你刚才的准备测试的项目引入进来

<?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>
 
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.1.RELEASE</version>
    </parent>
 
    <groupId>top.wp.cx</groupId>
    <artifactId>cx-main</artifactId>
    <version>1.0-SNAPSHOT</version>
 
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <mysql-connector-java.version>8.0.17</mysql-connector-java.version>
        <druid.version>1.1.21</druid.version>
        <mp.version>3.3.2</mp.version>
        <fastjson.version>1.2.70</fastjson.version>
        <jwt.version>0.9.1</jwt.version>
        <hutool.version>5.3.7</hutool.version>
        <lombok.versin>1.18.12</lombok.versin>
        <swagger.version>2.9.2</swagger.version>
        <swagger.bootstrap.ui.version>1.9.6</swagger.bootstrap.ui.version>
        <easypoi.version>4.2.0</easypoi.version>
        <jodconverter.version>4.2.0</jodconverter.version>
        <libreoffice.version>6.4.3</libreoffice.version>
        <justauth.version>1.15.6</justauth.version>
        <aliyun.oss.version>3.8.0</aliyun.oss.version>
        <qcloud.oss.version>5.6.23</qcloud.oss.version>
        <aliyun.sms.sdk.version>4.4.6</aliyun.sms.sdk.version>
        <aliyun.sms.esc.version>4.17.6</aliyun.sms.esc.version>
        <qcloud.sms.sdk.version>3.1.57</qcloud.sms.sdk.version>
    </properties>
 
 
    <dependencies>
 
        <dependency>
            <groupId>top.wp</groupId>
            <artifactId>cx-flow</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
 
        <!-- web -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
 
        <!--mybatis-plus-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>${mp.version}</version>
        </dependency>
 
        <!--数据库驱动-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql-connector-java.version}</version>
        </dependency>
 
        <!--数据库连接池-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>${druid.version}</version>
        </dependency>
 
        <!--hutool-->
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
            <version>${hutool.version}</version>
        </dependency>
 
        <!--lombok-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>${lombok.versin}</version>
        </dependency>
 
    </dependencies>
 
 
    <!--xml打包排除-->
    <build>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
                <!-- <excludes>
                    <exclude>**/*.properties</exclude>
                    <exclude>**/*.xml</exclude>
                </excludes> -->
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                    <include>**/*.yml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
        </resources>
    </build>
 
</project>

⑤application.yml配置文件注意xml的扫描

#服务配置
server:
  port: 8081
#spring相关配置
spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/cx-xn?autoReconnect=true&useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=CONVERT_TO_NULL&useSSL=false&serverTimezone=CTT&nullCatalogMeansCurrent=true
    username: root
    password: root
  servlet:
    multipart:
      max-request-size: 100MB
      max-file-size: 100MB
  jackson:
    time-zone: GMT+8
    date-format: yyyy-MM-dd HH:mm:ss.SSS
    locale: zh_CN
    serialization:
      # 格式化输出
      indent_output: false
 
#mybaits相关配置
mybatis-plus:
  #xml文件扫描
  mapper-locations: classpath*:top/wp/cx/**/mapping/*.xml, classpath:/META-INF/modeler-mybatis-mappings/*.xml
  configuration:
    map-underscore-to-camel-case: true
    cache-enabled: true
    lazy-loading-enabled: true
    multiple-result-sets-enabled: true
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
 
  global-config:
    banner: false
    db-config:
      id-type: assign_id
      table-underline: true
    enable-sql-runner: true
  configuration-properties:
    prefix:
    blobType: BLOB
    boolValue: TRUE

⑥启动入口，注意spring和mapper扫描

package top.wp.cx.main;
 
import cn.hutool.log.StaticLog;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
 
@SpringBootApplication
@ComponentScan(basePackages = {"top.wp.cx.modular.test"}) // spring扫描
@MapperScan(basePackages = {"top.wp.cx.modular.test.**.mapper"}) // mybatis扫描mapper
public class CXApplication {
    public static void main(String[] args) {
        SpringApplication.run(CXApplication.class, args);
        StaticLog.info(">>> " + CXApplication.class.getSimpleName() + " 启动成功!");
    }
}

⑦此时启动cx-main的项目，访问2-1的测试controller能访问成功证明配置正确

   
    来源：blog.csdn.net/weixin_44213308/
    article/details/111151350
    

    
    
    
   
     
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谈谈 SpringBoot 业务组件化开发思路

1、背景

2、demo

2-1项目准备

2-2项目打包、引入、运行

来源：blog.csdn.net/weixin_44213308/

article/details/111151350

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