How to open war package and publish application in SpringBoot

War package and jar package are common packaging methods. The concept of war package partial application can include front-end pages, publishing applications and interfaces; jar package partial service concept, usually in the form of jar package in the microservice scenario.

This section mainly introduces the process of SpingBoot hitting war package.

1 SpringBoot 4 steps to hit war package

1. Set the packaging mode, the default is jar mode.

<!--war包[1] 默认是jar包形式-->
<packaging>war</packaging>

2. Remove the built-in tomcat dependency. Because the war package is to be published to an external servlet container, the built-in Tomcat of the springboot web module is no longer needed.

<!--引入springboot web模块-->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
    <!--打war包需要移除springboot web模块中的内置tomcat依赖-->
    <exclusions>
        <exclusion>
            <groupId>spring-boot-starter-tomcat</groupId>
            <artifactId>org.springframework.boot</artifactId>
        </exclusion>
    </exclusions>
</dependency>

3. Set servlet dependency

<!--打war包需要添加外部servlet依赖-->
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>javax.servlet-api</artifactId>
    <scope>provided</scope>
</dependency>

4. Set the war package application startup class

public class WarStarterApplication extends SpringBootServletInitializer {
    
    
    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
    
    
        // 指向SpringBoot启动类--Application类
        return builder.sources(Application.class);
    }
}

At this point, we can find the generated jar package in the target directory of the project module that sets the war packaging method.

2 Publish the war package

Put the war package in the Tomcat/webapps directory, and the running Tomcat will automatically decompress the war package into a project, and you can request and access it at this time.

Note that the project name is the name of the project folder.

http://192.168.233.130:8088/foodie-api-1.0-SNAPSHOT/hello
协议://ip地址：端口号/webapps中项目目录名/路由