Java启动Tomcat的实现步骤

<? xml version = "1.0" encoding = "UTF-8" ?>

< project xmlns = "http://maven.apache.org/POM/4.0.0"

          xmlns:xsi = "http://HdhCmsTestw3.org/2001/XMLSchema-instance"

          xsi:schemaLocation = "http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" >

     < parent >

         < artifactId >handwritingproject</ artifactId >

         < groupId >com.njust</ groupId >

         < version >1.0-SNAPSHOT</ version >

     </ parent >

     < modelVersion >4.0.0</ modelVersion >

     < artifactId >javaStartTomcat</ artifactId >

     < dependencies >

         <!--Java语言操作tomcat -->

         < dependency >

             < groupId >org.apache.tomcat.embed</ groupId >

             < artifactId >tomcat-embed-core</ artifactId >

             < version >8.5.16</ version >

         </ dependency >

         <!-- tomcat对jsp支持 -->

         < dependency >

             < groupId >org.apache.tomcat</ groupId >

             < artifactId >tomcat-jasper</ artifactId >

             < version >8.5.16</ version >

         </ dependency >

     </ dependencies >

</ project >

package com.njust.servlet;

import java.io.IOException;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

public class IndexServlet extends HttpServlet {

     @Override

     protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

         doPost(req, resp);

     }

     @Override

     protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

         resp.getWriter().print( "this is index... tomcat" );

     }

}

package com.njust.servlet;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import java.io.IOException;

public class IndexServletC extends HttpServlet {

     @Override

     protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

         doPost(req, resp);

     }

     @Override

     protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

         resp.getWriter().print( "this is index... tomcat IndexServletC" );

     }

}

package com.njust.tomcat;

import com.njust.servlet.IndexServletC;

import org.apache.catalina.LifecycleException;

import org.apache.catalina.core.StandardContext;

import org.apache.catalina.startup.Tomcat;

import org.apache.catalina.startup.Tomcat.FixContextListener;

import com.njust.servlet.IndexServlet;

/**

  * 使用Java语言创建Tomcat服务器<br>

  * Tomcat 底层执行程序 最终servlet<br>

  * SpringMVC底层使用servlet 包装<br>

  *

  */

public class Main {

     private static int PORT = 8080 ;

     private static String CONTEX_PATH = "/njust" ;

     private static String SERVLET_NAME = "indexServlet1" ;

     private static String SERVLET_NAMET = "indexServletC" ;

     public static void main(String[] args) throws LifecycleException, InterruptedException {

         // 创建tomcat服务器

         Tomcat tomcatServer = new Tomcat();

         // 指定端口号

         tomcatServer.setPort(PORT);

         // 是否设置自动部署

         tomcatServer.getHost().setAutoDeploy( false );

         // 创建上下文

         StandardContext standardContex = new StandardContext();

         standardContex.setPath(CONTEX_PATH);

         // 监听上下文

         standardContex.addLifecycleListener( new FixContextListener());

         // tomcat容器添加standardContex

         tomcatServer.getHost().addChild(standardContex);

         // 创建Servlet

         tomcatServer.addServlet(CONTEX_PATH, SERVLET_NAME, new IndexServlet());

         tomcatServer.addServlet(CONTEX_PATH, SERVLET_NAMET, new IndexServletC());

         // servleturl映射

         standardContex.addServletMappingDecoded( "/index" , SERVLET_NAME);

         standardContex.addServletMappingDecoded( "/indexc" , SERVLET_NAMET);

         tomcatServer.start();

         System.out.println( "tomcat start success.." );

         // 异步进行接收请求

         tomcatServer.getServer().await();

     }

}

tomcatServer.start();

System.out.println( "tomcat start success.." );

// 异步进行接收请求

tomcatServer.getServer().await();