不是springboot项目怎么使用内置tomcat
解决方法：
1.pom.xml中添加以下依赖
<properties>
<tomcat.version>8.5.23</tomcat.version>
</properties>
<dependencies>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-core</artifactId>
<version>${tomcat.version}</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<version>${tomcat.version}</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-jasper</artifactId>
<version>${tomcat.version}</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-jasper-el</artifactId>
<version>${tomcat.version}</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-jsp-api</artifactId>
<version>${tomcat.version}</version>
</dependency>
</dependencies>
2.配置内置tomcat源码
package com.bx;
import org.apache.catalina.WebResourceRoot;
import org.apache.catalina.core.StandardContext;
import org.apache.catalina.startup.Tomcat;
import org.apache.catalina.webresources.DirResourceSet;
import org.apache.catalina.webresources.StandardRoot;
import java.io.File;
import java.net.URL;
public class Main {
public static final String WEB_APP_DIR = "../../src/main/webapp";
public static void main(String[] args) throws Exception {
Tomcat tomcat = new Tomcat();
tomcat.setPort(18080);
URL url = Main.class.getClassLoader().getResource("");
StandardContext ctx = (StandardContext) tomcat.addWebapp("/", url.getFile()+WEB_APP_DIR);
tomcat.start();
tomcat.getServer().await();
}
}