ssm框架无法访问controller，后台没有报错

springmvc.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!--设置包扫描器-->
    <context:component-scan base-package="com.scx.controller"></context:component-scan>

<!--    设置视图解析器-->
<bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <!--      前缀-->
    <property name="prefix" value="/WEB-INF/jsp/admin/"></property>
    <!--      后缀-->
    <property name="suffix" value=".jsp"></property>
</bean>
<!--    设置文件上传核心组件 id固定-->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"></bean>
    
<!--    设置注解驱动-->
    <mvc:annotation-driven></mvc:annotation-driven>
</beans>

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_4_0.xsd"
         version="4.0">
<!--    字符编码过滤器-->
    <filter>
        <filter-name>encoding</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
        <param-name>encoding</param-name>
        <param-value>UTF-8</param-value>
    </init-param>
<!--        <init-param>-->
<!--            <param-name>forceRequestEncoding</param-name>-->
<!--            <param-value>true</param-value>-->
<!--        </init-param>-->
<!--        <init-param>-->
<!--            <param-name>forceResponseEncoding</param-name>-->
<!--            <param-value>true</param-value>-->
<!--        </init-param>-->
    
    </filter>
    <filter-mapping>
        <filter-name>encoding</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    
<!--    注册springMVC框架-->
    <servlet>
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
<!--        只过滤.action后缀的请求。将.action后缀的请求交给DispatcherServlet-->
        <servlet-name>springmvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    
    
<!--    注册spring框架-->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext_*.xml</param-value>
    </context-param>
</web-app>

controller

package com.scx.controller;

import com.scx.pojo.Admin;
import com.scx.service.AdminService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

/**
 * @auther butterfly
 * @create 2021 10 29 18:28
 */
@Controller
@RequestMapping("/admin")
public class AdminAction {
    //在所有的界面层，一定会有业务逻辑层的对象
    @Autowired
    AdminService adminService;

    //实现登录判断，并进行相应的跳转
    @RequestMapping("/login")
    public String login(String name, String pwd, Model model){
        Admin admin = adminService.login(name, pwd);
        if(admin!=null){
            //登录成功
            model.addAttribute("admin",admin);
            System.out.println("true");
            return "main";
        }else {
            //登录失败
            model.addAttribute("errmsg","用户密码不正确");
            return "login";
        }
    }

}

访问地址

下面有什么bug信息展示吗

controller第一行加控制台输出语句 再次请求看看是否有输出 有输出就是进入了controller 只是返回页面的时候视图解析器路径拼接错误所以404