SpringBoot项目打包（jar和war）

一、修改pom.xml文件

需要修改的地方有：
1、打包方式，jar或者war
2、忽略内嵌tomcat
3、引入tomcat依赖
4、定义打包后的项目名
5、如果打包时报错（No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?）则需要添加插件指定jdk
pom.xml文件如下，需要修改的地方已在文件中作出注释，并顶行显示

<?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>
<!-- 1、修改打包方式  -->
    <packaging>war</packaging>
    <parent>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.4.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>
    <groupId>SpringBootDemo</groupId>
    <artifactId>test-book</artifactId>
    <version>1.0</version>
    <name>test-book</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
<!-- 2、忽略内嵌tomcat，打包部署到tomcat。注*本地运行的时候要把这一段忽略引入个注释掉，
要不然项目启动不了 -->
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-tomcat</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
        </dependency>
<!-- 3、引入tomcat依赖 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
            <scope>provided</scope>
        </dependency>
    </dependencies>

    <build>
<!-- 4、定义打包后的项目名 -->
        <finalName>book</finalName>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
<!-- 5、添加插件指定jdk -->
             <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <fork>true</fork>
                    <!-- executable 可指定也可不用 -->
                    <executable>C:\Program Files\Java\jdk1.8.0_191\bin\javac</executable>
                </configuration>
            </plugin> 
        </plugins>
    </build>

</project>

二、注意修改配置文件中数据库的配置信息，确保正确

三、启动类继承SpringBootServletInitializer并重写configure方法，这是为了打包springboot项目用的。

@SpringBootApplication
public class TestBookApplication extends SpringBootServletInitializer{

    public static void main(String[] args) {
        SpringApplication.run(TestBookApplication.class, args);
    }

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        return builder.sources(TestBookApplication.class);
    }
}

四、在windows的cmd窗口中打包项目

进入项目目录后输入 mvn clean package -Dmaven.test.skip=true命令

打包.png
打包成功，结果如下：
打包成功.png

五、在该项目的target目录下就可以找到打好的war包

war包位置.png