标签：web 多个 throw pre dog public 相关 extends span
配置方式
webXML
定义标签<urlpartten>Servlet访问路径
注解
定义的<urlpartten>数组：可以为一个servlet定义多个访问路径。
1 package cn.itcast.web.servlet; 2 3 import javax.servlet.ServletException; 4 import javax.servlet.annotation.WebServlet; 5 import javax.servlet.http.HttpServlet; 6 import javax.servlet.http.HttpServletRequest; 7 import javax.servlet.http.HttpServletResponse; 8 import java.io.IOException; 9 10 /** 11 * @author 旗木五五开 12 * @create 2020-02-19 0:08 13 */ 14 @WebServlet({"/d4","/dd4","/ddd4"}) 15 //{}多个，数组用大括号 16 public class ServletDemo4 extends HttpServlet { 17 @Override 18 protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { 19 System.out.println("doGet"); 20 } 21 }
路径定义规则
多层路径。目录结构
1 package cn.itcast.web.servlet; 2 3 import javax.servlet.ServletException; 4 import javax.servlet.annotation.WebServlet; 5 import javax.servlet.http.HttpServlet; 6 import javax.servlet.http.HttpServletRequest; 7 import javax.servlet.http.HttpServletResponse; 8 import java.io.IOException; 9 10 /** 11 * @author 旗木五五开 12 * @create 2020-02-19 0:08 13 */ 14 @WebServlet("/user/demo4") 15 public class ServletDemo4 extends HttpServlet { 16 @Override 17 protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { 18 System.out.println("doGet"); 19 } 20 }
*代表任意，想写啥就写啥，写啥都能访问到。直接写/*。后面写什么都能访问到
优先级最低，别的都访问不到，才访问
1 package cn.itcast.web.servlet; 2 3 import javax.servlet.ServletException; 4 import javax.servlet.annotation.WebServlet; 5 import javax.servlet.http.HttpServlet; 6 import javax.servlet.http.HttpServletRequest; 7 import javax.servlet.http.HttpServletResponse; 8 import java.io.IOException; 9 10 /** 11 * @author 旗木五五开 12 * @create 2020-02-19 0:08 13 */ 14 @WebServlet("/user/*") 15 public class ServletDemo4 extends HttpServlet { 16 @Override 17 protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { 18 System.out.println("doGet"); 19 } 20 }
*.do：*所有，do后缀名。注意不要写错，*.啥都行
注意*前不要加/
加了就——报错
1 package cn.itcast.web.servlet; 2 3 import javax.servlet.ServletException; 4 import javax.servlet.annotation.WebServlet; 5 import javax.servlet.http.HttpServlet; 6 import javax.servlet.http.HttpServletRequest; 7 import javax.servlet.http.HttpServletResponse; 8 import java.io.IOException; 9 10 /** 11 * @author 旗木五五开 12 * @create 2020-02-19 0:08 13 */ 14 @WebServlet("*.do") 15 public class ServletDemo4 extends HttpServlet { 16 @Override 17 protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { 18 System.out.println("doGet"); 19 } 20 }
标签：web 多个 throw pre dog public 相关 extends span
原文地址：https://www.cnblogs.com/rijiyuelei/p/12329485.html
