内置tomcat使用servlet

tomcat启动类

public class AppTomcat {
    public static void main(String[] args) throws LifecycleException {
        // 创建Tomcat应用对象
        Tomcat tomcat = new Tomcat();
        // 设置Tomcat的端口号
        tomcat.setPort(8080);
        // 是否设置Tomcat自动部署
        tomcat.getHost().setAutoDeploy(false);
        // 创建上下文
        StandardContext standardContext = new StandardContext();
        // 设置项目名
        standardContext.setPath("/sb");
        // 监听上下文
        standardContext.addLifecycleListener(new FixContextListener());
        // 向tomcat容器对象添加上下文配置
        tomcat.getHost().addChild(standardContext);
        // 创建Servlet
        tomcat.addServlet("/sb", "helloword", new HelloServlet());
        // Servlet映射
        standardContext.addServletMappingDecoded("/hello", "helloword");
        //启动tomcat容器
        tomcat.start();
        //等待
        tomcat.getServer().await();
    }
}

servlet类

public class HelloServlet extends HttpServlet{
    private static final long serialVersionUID = 1L;
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        resp.getWriter().write("hellowrld");
    }
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req, resp);
    }
}