使用main方法启动一个tomcat

雨点打透心脏的1/2处 2022-06-06 14:27 449阅读 0赞

package org.huluo.embedTomcat;
    
    import org.apache.catalina.LifecycleException;
    import org.apache.catalina.core.StandardContext;
    import org.apache.catalina.startup.Tomcat;
    
    import java.io.IOException;
    
    public class Main {
        public static void main(String[] args) throws LifecycleException, IOException {
            Tomcat tomcat = new Tomcat();
            tomcat.setHostname("localhost");
            tomcat.setPort(80);
            tomcat.setBaseDir("E:/embedTomcat");
            String contextPath = "";
    
            StandardContext context = new StandardContext();
            context.setPath(contextPath);
            context.addLifecycleListener(new Tomcat.FixContextListener());
            tomcat.getHost().addChild(context);
    
            tomcat.addServlet(contextPath, "hello", new EmbedTomcatServlet());
            context.addServletMappingDecoded("/hello", "hello");
    
            tomcat.start();
    
            tomcat.getServer().await();
        }
    }

这样可以以main方法的形式启动一个嵌入式 tomcat

但是,我们还没有servlet呢:

在写一个servlet,该servlet仅仅在页面上打印一行helloworld

package org.huluo.embedTomcat;
    
    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 EmbedTomcatServlet extends HttpServlet {
    
        @Override
        protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
            this.doPost(req, resp);
        }
    
        @Override
        protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
            resp.getWriter().write("helloworld");
        }
    }
    
    
    
    
     
     
     还要加入嵌入式Tomcat的依赖包哦 compile(group: 'org.apache.tomcat.embed',name: 'tomcat-embed-core',version: '8.5.14')