项目
编辑器Eclipse,使用maven的父子模块功能新建一个项目student,分为3个模块:student-web,?student-setting, student-util。其中student-web打包为war包,作为一个项目,student-setting, student-util打包为jar包,作为依赖引入到student-web。并且student-setting模块需要使用student-util提供的工具类
- student-web:?项目启动类和一些配置文件
- student-setting:?增删改查
- student-util:?存放一些工具类,供student-setting等模块使用
1.创建父project
1.1 创建student项目
File -> New -> Maven Project ->?maven-archetype-quickstart
?
1.2?修改父亲项目的结构:删除src和target目录,只留下pom.xml文件
删除前
删除后
?
1.3 修改父亲项目的pom.xml文件
- 把打包方式修改为pom:?<packaging>pom</packaging>
- 引入SpringBoot相关配置,把项目配置为SpringBoot项目: 添加<parent></parent>
- 把依赖放入:?<dependencyManagement></dependencyManagement>
完整的pom.xml文件如下
<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 -->
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.5.0</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<!-- project -->
<groupId>com.demo.student</groupId>
<artifactId>student</artifactId>
<name>student</name>
<version>0.0.1-SNAPSHOT</version>
<packaging>pom</packaging>
<!-- properties -->
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<!-- dependencyManagement -->
<dependencyManagement>
<dependencies>
</dependencies>
</dependencyManagement>
</project>
2.创建student-web模块
2.1 创建student-web 模块
File -> New -> Maven Module ->?maven-archetype-quickstart
这是整个项目的启动类和配置文件,这里注意web模块的package, 定义最外层的package, 要把启动类放在最外层的package, 因为springboot扫描组件时,会扫描启动类所在的package和它的子package
?
?
2.2 查看 各层级 pom.xml文件?
student-web/pom.xml, 里面定义了<parent></parent>
<parent>
<groupId>com.demo.student</groupId>
<artifactId>student</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
?student-web 项目创建成功后,可以看到student/pom.xml文件会多了如下配置信息
<modules>
<module>student-web</module>
</modules>
2.3?配置 各层级 pom.xml文件?
- 配置student-web/pom.xml 文件:添加配置?<packaging>war</packaging>, 把student-web定义为项目启动模块
student-web/pom.xml, 添加
<packaging>war</packaging>
2.4 创建项目启动类
student-web/pom.xml 添加依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
添加启动类
package com.demo.student;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.autoconfigure.jdbc.DataSourceTransactionManagerAutoConfiguration;
import org.springframework.scheduling.annotation.EnableScheduling;
@EnableScheduling
@SpringBootApplication(exclude = { DataSourceAutoConfiguration.class, DataSourceTransactionManagerAutoConfiguration.class })
public class StudentApplication {
public static void main(String[] args) {
SpringApplication.run(StudentApplication.class, args);
}
}
3.创建student-setting模块
3.1 创建student-setting模块
File -> New -> Maven Module ->?maven-archetype-quickstart
?3.2?查看 各层级 pom.xml文件?
- student-setting/pom.xml 有<parent>节点
- student/pom.xml 文件多了<module>
看下student-setting/pom.xml
<parent>
<groupId>com.demo.student</groupId>
<artifactId>student</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
?student-setting 模块创建成功后,再看下student/pom.xml? 。?这里可以手动调整下顺序
<modules>
<module>student-setting</module>
<module>student-web</module>
</modules>
3.3 配置 各层级 pom.xml文件?
因为student-setting 打包成jar包,所以把它作为依赖包交给student父亲管理,并且在student-web 项目中引入依赖
- 配置student-setting/pom.xml 文件:?添加配置 <packaging>jar</packaging>, 把student-setting 打包为一个jar包,作为依赖被student父亲项目管理,然后被其它模块引用.
- 在student/pom.xml添加管理依赖
- 在student-web/pom 引入依赖
student-setting/pom.xml : 配置打包方式
<packaging>jar</packaging>
student/pom.xml: 管理依赖
<properties>
<student.version>0.0.1-SNAPSHOT</student.version>
</properties>
<dependency>
<groupId>com.demo.student</groupId>
<artifactId>student-setting</artifactId>
<version>${student.version}</version>
</dependency>
student-web/pom.xml: 添加依赖
<dependency>
<groupId>com.demo.student</groupId>
<artifactId>student-setting</artifactId>
</dependency>
?3.4 测试:
在student-setting/pom.xml添加依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
student-setting项目 添加测试类
package com.demo.student.setting;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping("/api/setting")
public class StudentSettingController {
@GetMapping("/save")
public String save() {
System.out.println("This is student-setting save function");
return "This is student-setting save function";
}
}
启动student-web项目,访问http://localhost:8080/api/setting/save?
4.创建student-util模块
4.1 创建student-util 模块
File -> New -> Maven Module ->?maven-archetype-quickstart
?
4.2 查看各层级pom.xml
student/pom.xml 多了如下配置
<modules>
<module>student-util</module>
<module>student-setting</module>
<module>student-web</module>
</modules>
student-util/pom.xml 有如下<parent>配置
<parent>
<groupId>com.demo.student</groupId>
<artifactId>student</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
4.3 修改各层级pom.xml 配置
因为student-utils 需要打包成jar包,所以把它作为依赖包交给student父亲管理,并且在student-web 项目中引入依赖
- 配置student-utils/pom.xml 文件:?添加配置 <packaging>jar</packaging>, 把student-utils 打包为一个jar包,作为依赖被student父亲项目管理,然后被其它模块引用.
- 在student/pom.xml添加管理依赖
- 在student-web/pom 引入依赖
student-util/pom.xml 添加
<packaging>jar</packaging>
?student/pom.xml 添加
<dependency>
<groupId>com.demo.student</groupId>
<artifactId>student-util</artifactId>
<version>${student.version}</version>
</dependency>
student-web/pom.xml 添加
<dependency>
<groupId>com.demo.student</groupId>
<artifactId>student-util</artifactId>
</dependency>
4.4?测试?
student-util 模块 添加一个工具类DateUtil
package com.demo.student.util;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
public class DateUtil {
public static String yesterday() {
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMdd");
Calendar calendar = Calendar.getInstance();
calendar.setTime(new Date());
calendar.add(Calendar.DAY_OF_YEAR, -1);
String yesterday = simpleDateFormat.format(calendar.getTime());
return yesterday;
}
public static String today() {
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMdd");
String yesterday = simpleDateFormat.format(new Date());
return yesterday;
}
}
student-setting/pom.xml 添加依赖, 就可以把student-util模块引入到student-setting模块 ,这样在student-setting模块可以使用这个工具类DateUtil,
<dependency>
<groupId>com.demo.student</groupId>
<artifactId>student-util</artifactId>
</dependency>
修改StudentSettingController
package com.demo.student.setting;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.demo.student.util.DateUtil;
@RestController
@RequestMapping("/api/setting")
public class StudentSettingController {
@GetMapping("/save")
public String save() {
System.out.println("This is student-setting save function");
String today = DateUtil.today();
String yesterday = DateUtil.yesterday();
return "This is student-setting save function today is " + today + " yesterday is " + yesterday;
}
}
测试
启动student-web项目,访问http://localhost:8080/api/setting/save?
?
5.编译运行?
student/pom.xml 配置plugin
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</pluginManagement>
</build>
student-web/pom.xml 配置plugin
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
在student/pom.xml同级目录打开cmd,执行命令mvn clean package -Dmaven.test.skip=true,最后的编译过程如下,打好的war包在? student\student-web\target\ 文件夹内
在?student\student-web\target\? cmd 执行?java -jar student-web-0.0.1-SNAPSHOT.war
?访问 http://localhost:8080/api/setting/save
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