技術標籤：javaweb

建立maven-webapp專案

Maven匯入jsp和servlet依賴

		<dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>4.0.1</version>
        </dependency>

        <dependency>
 

            <groupId>javax.servlet.jsp</groupId>
            <artifactId>javax.servlet.jsp-api</artifactId>
            <version>2.3.1</version>
        </dependency>

建立servlet類

新建類繼承HttpServlet

@WebServlet("/hello")
public class DemoServlet extends HttpServlet
 
 {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        resp.getWriter().write("hello world");
    }
}

配置servlety對映（註解或xml）

• 註解

@WebServlet("/hello")
public class DemoServlet extends HttpServlet {
    @Override
 

    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        resp.getWriter().write("hello world");
    }
}

• xml

  <!--servlet對映-->
  <servlet>
    <servlet-name>hello</servlet-name>
    <servlet-class>com.ckh.servlet.DemoServlet</servlet-class>
  </servlet>
  <!--servlet路徑-->
  <servlet-mapping>
    <servlet-name>hello</servlet-name>
    <url-pattern>/hello</url-pattern>
  </servlet-mapping>

配置Tomcat

執行