Spring Boot 将web项目打包成jar运行

1. 在src/main文件夹下创建webapp文件夹，将前端源码放入webapp下（并将webapp文件夹exclude掉，避免idea无法加载项目）

2. pom添加以下代码，使用maven管理前端项目

             <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>exec-maven-plugin</artifactId>
                <executions>
                    <execution>
                        <id>npm install</id>
                        <phase>prepare-package</phase>
                        <goals>
                            <goal>exec</goal>
                        </goals>
                        <configuration>
                            <executable>npm</executable>
                            <arguments>
                                <argument>install</argument>
                            </arguments>
                            <workingDirectory>${basedir}/src/main/webapp</workingDirectory>
                        </configuration>
                    </execution>

                    <execution>
                        <id>npm run build</id>
                        <phase>prepare-package</phase>
                        <goals>
                            <goal>exec</goal>
                        </goals>
                        <configuration>
                            <executable>npm</executable>
                            <arguments>
                                <argument>run</argument>
                                <argument>build</argument>
                            </arguments>
                            <workingDirectory>${basedir}/src/main/webapp</workingDirectory>
                        </configuration>
                    </execution>
                </executions>
            </plugin>

3. 添加以下代码将前端打包后文件复制到resources下的static文件夹（没有请手动创建）

        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-resources-plugin</artifactId>
            <configuration>
                <encoding>${project.build.sourceEncoding}</encoding>
            </configuration>
            <executions>
                <execution>
                    <id>copy-spring-boot-webapp</id>
                    <!-- here the phase you need -->
                    <phase>validate</phase>
                    <goals>
                        <goal>copy-resources</goal>
                    </goals>
                    <configuration>
                        <encoding>utf-8</encoding>
                        <outputDirectory>${basedir}/src/main/resources/static</outputDirectory>
                        <resources>
                            <resource>
                                <directory>${basedir}/src/main/webapp/dist</directory>
                            </resource>
                        </resources>
                    </configuration>
                </execution>
            </executions>
        </plugin>

上面两步操作均通过maven package命令完成，无需手动操作，执行完后即可以正常后端项目启动，启动后访问ip:port根目录可看到前端页面表示web项目启动成功，若失败请检查pom文件夹配置与webpack打包配置是否一致