IDEA configures and runs maven web project

I. Modification of project structure

1.1 The directory structure of the project just created in idea is not standard and needs to be changed manually.

Standard directory structure: https://blog.csdn.net/nothings0o/article/details/77122646

Modify the directory structure: https://blog.csdn.net/qq_34377273/article/details/83183307

Configuration of tomcat plug-in

2.1 Add to the <build> tag of the pom.xml file (there are many other plug-ins that can be deleted from the initial pom.xml)

<build>
    <plugins>
        <!--To configure tomcat-->
        <plugin>
          <groupId>org.apache.tomcat.maven</groupId>
          <artifactId>tomcat7-maven-plugin</artifactId>
          <version>2.2</version>
          <configuration>
            <!-- control tomcat Port number -->
            <port>80</port>
            <!-- Project release to tomcat Name after -->
            <!-- / Equivalent to publishing a project with a name of ___________ ROOT -->
            <!-- /abc -->
            <path>/</path>
          </configuration>
        </plugin>
      </plugins>
  </build>

Configuration dependency packages

<dependencies>
  <dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>javax.servlet-api</artifactId>
    <version>3.0.1</version>
    <scope>provided</scope>
  </dependency>
  <dependency>
    <groupId>javax.servlet.jsp</groupId>
    <artifactId>jsp-api</artifactId>
    <version>2.2</version>
    <scope>provided</scope>
  </dependency>
  <dependency>
    <groupId>jstl</groupId>
    <artifactId>jstl</artifactId>
    <version>1.2</version>
  </dependency>
</dependencies>

3.1 Here I just randomly configure one, which to add, according to the situation.

3.2 Coordinate Search Website: https://mvnrepository.com/