Tomcat内嵌式Tomcat及手写内嵌式Tomcat

　　嗯，代码如下。 import org.apache.catalina.Context; import org.apache.catalina.Host; import org.apache.catalina.LifecycleException; import org.apache.catalina.Wrapper; import org.apache.catalina.connector.Connector; import org.apache.catalina.core.StandardContext; import org.apache.catalina.startup.Tomcat;  /**  *  实现自己的内嵌tomcat  */ public class EmbeddedTomcatDemo {      public static void main(String[] args) throws LifecycleException {         //把目录的绝对的路径获取到         String classpath = System.getProperty(＂user.dir＂);         System.out.println(classpath);          Tomcat c = new Tomcat();         // 设置端口         // 2种方式 1、直接使用 tomcat实例设置 2、获取Connector连接器，连接器里提供了很多方法 //        c.setPort(9901);         Connector connector = c.getConnector();         connector.setPort(9091);          //设置Host         Host host = c.getHost();         //我们会根据xml配置文件来         host.setName(＂localhost＂);         host.setAppBase(＂webapps＂);         //要把class加载进来,把启动的工程加入进来了         Context context = c.addContext(host, ＂/＂, classpath);          if(context instanceof StandardContext){             StandardContext standardContext = (StandardContext)context;             // 这里取本地的web.xml 也可以设置相对目录的方式             standardContext.setDefaultContextXml(＂E:/softToll/apache-tomcat-8.0.21-windows-x64/apache-tomcat-8.0.21/conf/web.xml＂);  //            standardContext.setDefaultContextXml(＂classpath:web.xml＂);             // wrapper包装 servlet             Wrapper wrapper =  c.addServlet(＂/＂,                     ＂TestServlet＂, new TestServlet());             wrapper.addMapping(＂/＂);         }         //Tomcat跑起来         c.start();         //强制Tomcat server等待，避免main线程执行结束后关闭         c.getServer().await();      } }  // 测试servlet public class TestServlet extends HttpServlet {     private static final long serialVersionUID = 1L;      @Override     public void doGet(HttpServletRequest request, HttpServletResponse response)             throws IOException, ServletException     {         response.setContentType(＂text/html＂);         response.setCharacterEncoding(＂UTF-8＂);         PrintWriter out = response.getWriter();          out.println(＂＂);         out.println(＂＂);         out.println(＂＂);         out.println(＂＂);         out.println(＂＂);         out.println(＂＂);         out.println(＂
非鸽传书
＂);         out.println(＂
＂);         out.println(＂道可道，非常道；名可名，非常名＂);         out.println(＂＂);         out.println(＂＂);     } }
　　效果：
　　respect!!