IDEA SpringBoot configuration using external Servlet Container (the Tomcat)

SpringBoot default is to use an embedded Servlet Container application executable jar labeled package
in this way has advantages and disadvantages

• Advantages:
  simple and convenient
• Cons:
  default does not support JSP
  optimize and customize more complex (only use Customizer ServerProperties or custom embedded Servlet container customizer to customize)

Using an external Servlet container:

First when creating project applications by way of war package packaging:

this time the project has not yet webapp directory can also be created manually IDEA automatically generated

double-click the red text and then click OK in the pop-up box, you can:

Click the plus sign to generate xml file
generation path: project name \ src \ main \ webapp \ WEB -INF \ web.xml

this directory there:

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Then configure the external Servlet container
here to Tomcat for example:
selecting Local local path to add the Tomcat

configuration of Tomcat local path:

Click the plus sign to add Artifact

choose war package:

then apply then ok to save
Once configured, click on the upper right corner of the IDEA run button to start the external Servlet container

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To create a manual three points should be noted:

• 1, the project created a war project
• 2, range of embedded Tomcat is private

<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
            <scope>provided</scope>
</dependency>

• 3, must have a startup class
  class must inherit SpringBootServletInitializer name can be named

public class ServletInitializer extends SpringBootServletInitializer {

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        // 传入应用的主程序
        return application.sources(SpringbootWebjarApplication.class);
    }
}

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