IDEA创建SpringBoot的多模块项目教程

最近在写一个多模块的SpringBoot项目，基于过程总了一些总结，故把SpringBoot多个模块的项目创建记录下来。

首先，先建立一个父工程：

1 <!--web特征-->
2 <dependency>
3     <groupId>org.springframework.boot</groupId>
4     <artifactId>spring-boot-starter-web</artifactId>
5     <version>2.3.1.RELEASE</version>
6 </dependency>

最终得到以下的父结构目录：

以上是创建父模块，下面创建子模块：

controller层添加以下依赖：

1 <dependencies>
2     <dependency>
3         <groupId>com.example</groupId>
4         <artifactId>fte-common</artifactId>
5         <version>0.0.1-SNAPSHOT</version>
6     </dependency>
7
8     <dependency>
9         <groupId>com.example</groupId>
10         <artifactId>fte-dao</artifactId>
11         <version>0.0.1-SNAPSHOT</version>
12     </dependency>
13
14     <dependency>
15         <groupId>com.example</groupId>
16         <artifactId>fte-service</artifactId>
17         <version>0.0.1-SNAPSHOT</version>
18     </dependency>
19 </dependencies>

service层添加以下依赖：

1 <dependencies>
2     <dependency>
3         <groupId>com.example</groupId>
4         <artifactId>fte-dao</artifactId>
5         <version>0.0.1-SNAPSHOT</version>
6     </dependency>
7 </dependencies>

在fte-controller创建com.zhu.fte.web包，增加以下两个类：

fteWebApplication类：

1 package com.zhu.fte.web;
2
3 import org.springframework.boot.SpringApplication;
4 import org.springframework.boot.autoconfigure.SpringBootApplication;
5
6 @SpringBootApplication
7 public class fteWebApplication {
8     public static void main(String[] args) {
9         SpringApplication.run(fteWebApplication.class,args);
10     }
11 }

DemoController类

1 package java.com.zhu.fte.web;
2
3 import org.springframework.web.bind.annotation.GetMapping;
4 import org.springframework.web.bind.annotation.RequestMapping;
5 import org.springframework.web.bind.annotation.RestController;
6
7 @RestController
8 @RequestMapping("demo")
9 public class DemoController {
10
11     @GetMapping("test")
12     public String test(){
13         return "hello world";
14     }
15
16 }

运行发现出现错误：

出现错误：

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.22.2:test (default-test) on project fte-common: Execution default-test of goal org.apache.maven.plugins:maven-surefire-plugin:2.22.2:test failed: Plugin org.apache.maven.plugins:maven-surefire-plugin:2.22.2 or one of its dependencies could not be resolved: Could not transfer artifact junit:junit:jar:4.12 from/to central (https://repo.maven.apache.org/maven2): Connect to repo.maven.apache.org:443 [repo.maven.apache.org/151.101.52.215] failed: Connection timed out: connect -> [Help 1]

把缺少的org.apache.maven.plugins手动放到父工程的pom.xml里

1 <build>
2    <plugins>
3       <plugin>
4          <groupId>org.apache.maven.plugins</groupId>
5          <artifactId>maven-clean-plugin</artifactId>
6          <version>2.5</version>
7       </plugin>
8       <plugin>
9          <groupId>org.apache.maven.plugins</groupId>
10          <artifactId>maven-source-plugin</artifactId>
11          <version>2.2</version>
12       </plugin>
13       <plugin>
14          <groupId>org.apache.maven.plugins</groupId>
15          <artifactId>maven-compiler-plugin</artifactId>
16          <version>3.0</version>
17          <configuration>
18             <source>1.8</source>
19             <target>1.8</target>
20             <encoding>${file.encoding}</encoding>
21             <!--编译的时候方法不改变方法参数名称，用于支持使用反射获取方法参数名称-->
22             <compilerArgument>-parameters</compilerArgument>
23          </configuration>
24       </plugin>
25       <plugin>
26          <groupId>org.apache.maven.plugins</groupId>
27          <artifactId>maven-install-plugin</artifactId>
28          <version>2.4</version>
29       </plugin>
30       <plugin>
31          <groupId>org.apache.maven.plugins</groupId>
32          <artifactId>maven-jar-plugin</artifactId>
33          <version>2.4</version>
34          <configuration>
35             <archive>
36                <manifest>
37                   <addDefaultImplementationEntries>true
38                   </addDefaultImplementationEntries>
39                </manifest>
40             </archive>
41          </configuration>
42       </plugin>
43
44       <plugin>
45          <groupId>org.apache.maven.plugins</groupId>
46          <artifactId>maven-surefire-plugin</artifactId>
47          <version>2.13</version>
48          <configuration>
49             <argLine>-Xmx512M -Dfile.encoding=${file.encoding}</argLine>
50          </configuration>
51       </plugin>
52    </plugins>
53 </build>

运行fteWebApplication类里的main方法，默认端口为8080，访问http://localhost:8080/demo/test，正常出现以下情况：

按照以上步骤，就可以初步建立SpringBoot多模块的项目，下一章将基于这个基础搭建Mybatis以及其逆向工程。