spring boot:多模块项目生成jar包(spring boot 2.3.3) |
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一,多模块项目的优点:
1,为什么要使用多模块项目? 相比传统的单体工程,使用Maven的多模块配置, 有如下优点: 帮助项目划分模块,鼓励重用, 防止POM变得过于庞大, 方便某个模块的构建,而不用每次都构建整个项目, 对某个模块的特殊控制更为方便
2,创建项目的流程: 先创建一个空项目multimodjar,删除无关文件,只留一个pom.xml和一个multimodjar.iml 然后在这个项目下创建module
3,pom.xml/multimodjar.iml 两个文件的用途说明: pom.xml: 项目对象模型(Project Object Model)的简称,它是Maven项目中的文件。 作用:管理源代码/配置文件/开发者的信息和角色/问题追踪系统/组织信息/项目授权/项目的url/项目的依赖关系等 multimodjar.iml,iml文件,infomation of module, 作用:保存了项目的配置信息,intellij idea需要从它获取项目信息
说明:刘宏缔的架构森林是一个专注架构的博客,地址:https://www.cnblogs.com/architectforest 对应的源码可以访问这里获取: https://github.com/liuhongdi/ 说明:作者:刘宏缔 邮箱: [email protected] 二, 演示项目的相关信息 1,项目地址: https://github.com/liuhongdi/multimodjar
2,项目功能说明: 演示了多模块项目如何配置pom.xml打包 项目包含了4个模块:mmweb(可执行的入口) mmservice mmpojo mmrepo(数据库) 3,项目结构:如图: 三,配置文件说明1,根项目pom.xml 4.0.0 org.springframework.boot spring-boot-starter-parent 2.3.3.RELEASE com.multimodjar demo 0.0.1-SNAPSHOT demo Demo project for Spring Boot 11 pom mmweb mmpojo mmrepo mmservice可以看到,在根项目中,只需要添加对各个模块的依赖
2,mmweb模块的pom.xml 4.0.0 org.springframework.boot spring-boot-starter-parent 2.3.3.RELEASE com.mmweb demo 0.0.1-SNAPSHOT demo Demo project for Spring Boot 11 org.springframework.boot spring-boot-starter-web com.mmservice demo 0.0.1-SNAPSHOT compile com.mmpojo demo 0.0.1-SNAPSHOT compile org.springframework.boot spring-boot-starter-thymeleaf org.springframework.boot spring-boot-starter-test test org.junit.vintage junit-vintage-engine org.springframework.boot spring-boot-maven-plugin com.mmweb.demo.DemoApplication ZIP repackage因为mmweb是可执行的类所在模块,所以需要专门指定执行mainClass入口类
3,mmweb的application.properties #error server.error.include-stacktrace=always #errorlog logging.level.org.springframework.web=trace #mysql spring.datasource.url=jdbc:mysql://localhost:3306/store?characterEncoding=utf8&useSSL=false spring.datasource.username=root spring.datasource.password=lhddemo spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver #mybatis mybatis.mapper-locations=classpath:/mapper/*Mapper.xml mybatis.type-aliases-package=com.example.demo.mapper mybatis.configuration.log-impl=org.apache.ibatis.logging.stdout.StdOutImpl #thymeleaf spring.thymeleaf.cache=false spring.thymeleaf.encoding=UTF-8 spring.thymeleaf.mode=HTML spring.thymeleaf.prefix=classpath:/templates/ spring.thymeleaf.suffix=.html
4,mmservice的pom.xml 4.0.0 org.springframework.boot spring-boot-starter-parent 2.3.3.RELEASE com.mmservice demo 0.0.1-SNAPSHOT demo Demo project for Spring Boot 11 com.mmpojo demo 0.0.1-SNAPSHOT compile com.mmrepo demo 0.0.1-SNAPSHOT compile com.github.pagehelper pagehelper-spring-boot-starter 1.2.12
5,mmrepo的pom.xml 4.0.0 org.springframework.boot spring-boot-starter-parent 2.3.3.RELEASE com.mmrepo demo 0.0.1-SNAPSHOT demo Demo project for Spring Boot 11 com.mmpojo demo 0.0.1-SNAPSHOT org.mybatis.spring.boot mybatis-spring-boot-starter 2.1.3 mysql mysql-connector-java runtime
6,mmpojo的pom.xml 4.0.0 org.springframework.boot spring-boot-starter-parent 2.3.3.RELEASE com.mmpojo demo 0.0.1-SNAPSHOT demo Demo project for Spring Boot 11
7,用到的数据表的结构: CREATE TABLE `goods` ( `goodsId` int(11) NOT NULL AUTO_INCREMENT COMMENT 'id', `goodsName` varchar(500) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL DEFAULT '' COMMENT 'name', `subject` varchar(200) NOT NULL DEFAULT '' COMMENT '标题', `price` decimal(15,2) NOT NULL DEFAULT '0.00' COMMENT '价格', `stock` int(11) NOT NULL DEFAULT '0' COMMENT 'stock', PRIMARY KEY (`goodsId`) ) ENGINE=InnoDB AUTO_INCREMENT=0 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci COMMENT='商品表'四,java代码说明 1,DemoApplication.java @SpringBootApplication(scanBasePackages = {"com.mmservice.demo","com.mmpojo.demo","com.mmweb.demo"}) @MapperScan("com.mmrepo.demo") public class DemoApplication { public static void main(String[] args) { SpringApplication.run(DemoApplication.class, args); } }说明:因为引入了多模块,需要添加上扫描包的路径
2,HomeController.java import com.mmpojo.demo.pojo.Goods; import com.mmservice.demo.service.GoodsService; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.*; import javax.annotation.Resource; import java.util.List; import java.util.Map; @Controller @RequestMapping("/home") public class HomeController { @Resource private GoodsService goodsService; // list all goods @GetMapping("/list") @ResponseBody public List all() { System.out.println("-------------------------list"); List list = goodsService.getAllGoods(); return list; } //带模板显示商品列表 参数:第几页 @GetMapping("/goodslist") public String goodsList(Model model, @RequestParam(value="p",required = false,defaultValue = "1") int currentPage) { Map res = goodsService.getAllGoodsByPage(currentPage); model.addAttribute("pageInfo", res.get("pageInfo")); model.addAttribute("goodslist", res.get("goodslist")); return "goods/goodslist"; } }注意import的goods/GoodsService类的路径
3,GoodsServiceImpl.java @Service public class GoodsServiceImpl implements GoodsService { @Resource private GoodsMapper goodsMapper; //返回全部商品 @Override public List getAllGoods() { List goodsList = goodsMapper.selectAllGoods(); return goodsList; } //带分页返回商品 @Override public Map getAllGoodsByPage(int currentPage) { Map res = new HashMap(); PageHelper.startPage(currentPage, 5); List goodsList = goodsMapper.selectAllGoods(); res.put("goodslist",goodsList); PageInfo pageInfo = new PageInfo(goodsList); res.put("pageInfo",pageInfo); return res; } }
4,GoodsMapper.java @Repository @Mapper public interface GoodsMapper { List selectAllGoods(); }
5,GoodsMapper.xml DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> select * from goods order by goodsId desc
6,Goods.java public class Goods { //商品id Long goodsId; public Long getGoodsId() { return this.goodsId; } public void setGoodsId(Long goodsId) { this.goodsId = goodsId; } //商品名称 private String goodsName; public String getGoodsName() { return this.goodsName; } public void setGoodsName(String goodsName) { this.goodsName = goodsName; } //商品标题 private String subject; public String getSubject() { return this.subject; } public void setSubject(String subject) { this.subject = subject; } //商品价格 private BigDecimal price; public BigDecimal getPrice() { return this.price; } public void setPrice(BigDecimal price) { this.price = price; } //库存 int stock; public int getStock() { return this.stock; } public void setStock(int stock) { this.stock = stock; } public String toString(){ return " Goods:goodsId=" + goodsId +" goodsName=" + goodsName+" subject=" + subject+" price=" + price+" stock=" + stock; } }
7,goodslist.html DOCTYPE html> 商品列表 首页 上一页 | | | 下一页 尾页五,测试效果 1, 打包: maven界面,root项目下,先执行clean
然后再执行package 即可以在mmweb项目的target目录下看到jar包
demo-0.01-SNAPSHOT.jar,就是生成的jar包
2,运行jar包 #nohup: 让命令在后台执行,即使终端关闭也不会退出 [root@localhost target]# nohup /usr/local/soft/jdk-12.0.2/bin/java -Xms256m -Xmx256m -jar /data/springboot2f/multimodjar/mmweb/target/demo-0.0.1-SNAPSHOT.jar >/dev/null 2>&1 & [1] 30103如使用此命令,注意把路径替换成自己java命令和jar包的所在路径
3,从浏览器访问: http://127.0.0.1:8080/home/goodslist/?p=1返回: 六,查看spring boot的版本: . ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v2.3.3.RELEASE)
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