用java代碼啟動tomcat

package com.test;
import org.apache.catalina.connector.Connector;
import org.apache.catalina.startup.Tomcat;
import org.junit.Test;
public class TestTomcat {//Test.class
    //通過如下方法啟動tomcat
    @Test
    public void testTomcat()throws Exception {
        //1.構建tomcat對象(遵循JAVAEE規范)
        Tomcat t=new Tomcat();
        //2.構建Connector對象(連接器),負責協議配置,端口配置等
        Connector conn=new Connector("HTTP/1.1");
        conn.setPort(8080);
        t.getService().addConnector(conn);
        //3.啟動tomcat
        t.start();
        //4.阻塞當前線程
        t.getServer().await();
        
    }
}

 需要導入的jar包

<dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>

        <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-core</artifactId>
            <version>9.0.12</version>
        </dependency>

    </dependencies>

 2.注冊servlet:

import org.apache.catalina.Context;
import org.apache.catalina.connector.Connector;
import org.apache.catalina.startup.Tomcat;
import org.junit.Test;
public class ServletTests {
    //嵌入式tomcat測試
    @Test
    public void testServlet()throws Exception {
      //構建tomcat對象,此對象為啟動tomcat服務的入口對象
      Tomcat t=new Tomcat();
      //構建Connector對象,此對象負責與客戶端的連接.
      Connector con=new Connector("HTTP/1.1");
      //設置服務端的監聽端口
      con.setPort(8080);
      //將Connector注冊到service中
      t.getService().addConnector(con);
      //注冊servlet
      Context ctx=t.addContext("/",null);
      Tomcat.addServlet(
              ctx,
              "helloServlet",
              "com.company.java.servlet.HelloServlet");
      //映射servlet
      ctx.addServletMappingDecoded("/hello", "helloServlet");
      //啟動tomcat
      t.start();
      //阻塞當前線程
      System.out.println(Thread.currentThread().getName());
      t.getServer().await();
      //while(true) {}
    }
}