springboot项目打包成jar包或war包，并部署到服务器

一.jar包

1.通过maven打包成jar包

2.将jar包放到服务器任意目录，在该目录下执行命令下面命令

nohup java -jar demo.jar

（下面的命令我加了jvm参数）

我遇到了“jar中没有主清单属性”的问题，解决办法：
a.在pom中添加一个SpringBoot的构建的插件

<build>
  <plugins>
  	<plugin>
  		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-maven-plugin</artifactId>
  	</plugin>
  </plugins>
 </build>

b.也可能war 没改成：jar

二.war包

1.修改pom.xml

    <packaging>war</packaging>

全部

<?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>

    <groupId>com.example</groupId>
    <artifactId>demo1</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <!-- 这里打成war包 若打jar，需将war改为jar -->
    <packaging>war</packaging>

    <name>demo1</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.4.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

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

    <build>
        <finalName>demo1</finalName>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>

2.通过maven打包成war包

3.将war放入tomcat的webapps目录下启动tomcat