【servlet】搭建servlet环境

编写Servlet类

先创建一个javaweb项目

public class HelloServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        System.out.println("servlet get sucess ..");
    }
}

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">
    <!-- 1、添加servlet节点 -->
    <servlet>
        <!-- Servlet的名字，和2中的名字必须一致 -->
        <servlet-name>aServlet</servlet-name>
        <!-- Servlet的全类名 -->
        <servlet-class>com.test.servlet.HelloServlet</servlet-class>
    </servlet>
    <!-- 2、添加servlet-mapping节点 -->
    <servlet-mapping>
        <!-- Servlet的名字，和1中的名字必须一致 -->
        <servlet-name>aServlet</servlet-name>
        <!-- Servlet的访问路径，通过该路径可以访问doServlet的Get或doPost方法 -->
        <url-pattern>/aServlet</url-pattern>
    </servlet-mapping>
</web-app>

浏览器输入 [localhost:8080/02_servlet_war_exploded/aServlet](http://localhost:8080/02_servlet_war_exploded/aServlet)