springmvc实现controller接口

前置配置

基础环境

springmvc 环境
jdk1.8
tomcat8.5

集成环境

idea
smart-tomcat (idea 中 tomcat插件)

实现controller接口

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class MyController implements Controller {
    public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {
        ModelAndView modelAndView = new ModelAndView();
        modelAndView.setViewName("my");
        return modelAndView;
    }
}

定义jsp页面

在 webapp/WEB-INF/customer 目录新建 my.jsp 文件

<%--
  Created by IntelliJ IDEA.
  User: -
  Date: 2023/2/20
  Time: 22:02
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<h1>my.jsp 页面</h1>
</body>
</html>

重要核心配置

springmvc核心配置文件

springmvc-config.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:mvc="http://www.springframework.org/schema/mvc"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/mvc
						http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
						http://www.springframework.org/schema/beans
						http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
						http://www.springframework.org/schema/context
          				http://www.springframework.org/schema/context/spring-context-4.0.xsd">

	<!-- 1.配置前端控制器放行静态资源(html/css/js等，否则静态资源将无法访问) -->
	<mvc:default-servlet-handler />

	<!-- 2.配置注解驱动，用于识别注解（比如@Controller） -->
	<mvc:annotation-driven></mvc:annotation-driven>

	<!-- 3.配置需要扫描的包：spring自动去扫描 base-package 下的类， 如果扫描到的类上有 @Controller、@Service、@Component等注解， 
		将会自动将类注册为bean @Controller public class HelloController{} -->
	<context:component-scan
		base-package="com.shaoming.controller">
	</context:component-scan>

	<!-- 4.配置内部资源视图解析器 prefix:配置路径前缀 suffix:配置文件后缀 /WEB-INF/pages/home.jsp -->
	<bean
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/customer/" />
		<property name="suffix" value=".jsp" />
	</bean>


	<!-- 配置文件上传，如果没有使用文件上传可以不用配置，当然如果不配，那么配置文件中也不必引入上传组件包 -->
	<bean id="multipartResolver"
		class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
		<!-- 默认编码 -->
		<property name="defaultEncoding" value="utf-8" />
		<!-- 文件大小最大值 -->
		<property name="maxUploadSize" value="10485760000" />
		<!-- 内存中的最大值 -->
		<property name="maxInMemorySize" value="40960" />
		<!-- 启用是为了推迟文件解析，以便捕获文件大小异常 -->
		<property name="resolveLazily" value="true" />
		<property name="uploadTempDir" value="fileUpload/temp" />
	</bean>

	<bean id="/hello.action" class="com.shaoming.controller.MyController"></bean>
</beans>