Spring MVC +maven配置

Spring MVC是Spring提供的一个强大而灵活的框架，很多Java开发者都会选择Spring MVC来进行开发。本篇文章主要是为了帮助想要了解Spring MVC框架的小伙伴熟悉一下Spring MVC框架搭建过程的详细步骤。

一、创建项目

1、新建一个项目名为：springmvc-demo-yuyongqing

右键项目名选择Add Framework Support

新建项目

2、选择Web Application

在这里插入图片描述

3、配置SpringMVC

pom.xml

<dependencies>
<dependency>
 <groupId>junit</groupId>
 <artifactId>junit</artifactId>
 <version>4.13.2</version>
 <scope>test</scope>
</dependency>
<dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-webmvc</artifactId>
 <version>5.2.13.RELEASE</version>
</dependency>
<dependency>
 <groupId>javax.servlet</groupId>
 <artifactId>servlet-api</artifactId>
 <version>2.5</version>
</dependency>
<dependency>
 <groupId>javax.servlet</groupId>
 <artifactId>javax.servlet-api</artifactId>
 <version>4.0.1</version>
 <scope>provided</scope>
</dependency>
</dependencies>

刷新maven后再加入如下图所示代码

在这里插入图片描述

<build>
<resources>
 <resource>
  <directory>src/main/java</directory>
  <includes>
   <include>**/*.properties</include>
   <include>**/*.xml</include>
  </includes>
  <filtering>false</filtering>
 </resource>
 <resource>
  <directory>src/main/resources</directory>
  <includes>
   <include>**/*.properties</include>
   <include>**/*.xml</include>
  </includes>
  <filtering>false</filtering>
 </resource>
</resources>
</build>

二、配置核心文件

核心文件

1、

<?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
 ">

<!-- bean definitions here -->

2、添加SpringMVC配置内容

SpringMVC配置内容

 <!-- 自动扫描包，让指定包下的注解生效,由IOC容器统一管理 -->
  <context:component-scan base-package="controller"/>
  
<!-- 1加载注解驱动 -->
<mvc:annotation-driven/>
 <!-- 2静态资源过滤 -->
<mvc:default-servlet-handler/>
<!-- 3视图解析器 -->
<bean id="internalResourceViewResolver" class=
 "org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>

3、Controller层

新建一个HelloController类

新建HelloController类

 package controller;

@Controller
public class HelloController {

@RequestMapping("/hello")
public String hello(Model model){
 // Model 封装数据
 model.addAttribute("msg","HELLO MY FIRST SPRING MVC PROJECT");

 // 返回的字符串就是视图的名字 会被视图解析器处理
 return "hello";
 }
}

4、JSP

在JSP包下新建hello.jsp

新建hello.jsp文件

 <%@ page contentType="text/html;charset=UTF-8" language="java" %>
 <html>
 <head>
<title>Title</title>
 </head>
 <body>
${msg}
 </body>
 </html>

三、web.xml

1、配置前端控制器

<!-- 配置前端控制器 -->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

2、配置初始化参数

<!-- 配置初始化参数 -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationcontext.xml</param-value>
</init-param>

3、设置启动级别

<!-- 设置启动级别 -->
<load-on-startup>1</load-on-startup>
</servlet>

4、设置SpringMVC拦截请求

<!-- 设置SpringMVC拦截请求 -->
<servlet-mapping>
 <servlet-name>springmvc</servlet-name>
 <url-pattern> / </url-pattern> <!--拦截除.jsp的请求-->
</servlet-mapping>

5、乱码过滤

 <!-- 乱码过滤 -->
<filter>
<filter-name>encodingFilter</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>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

6、运行web

打包
File→Project Structure

File→Project Structure