1_SpringMVC_概述，2_SpringMVC_项目搭建

- 日理万妓 2023-09-30 17:18 34阅读 0赞

![519f7365b565e48313e29e2fd4e95a8c.png][]

M model 模型层 DAO封装 >>> Mybatis  
V view 视图层 html css js jsp  
C controller 控制层 Servlet封装 >>> springMVC

SpringMVC是spring为展现层提供的基于MVC设计理念的优秀WEB框架,是目前最主流的MVC框架之一  
SpringMVC通过一套注解,可以让普通的JAVA类成为contrllor控制器,无需继承Servlet,实现了控制层和Servlet之间的解耦  
SpringMVC支持Rest风格的URL写法  
SpringMVC采用了松耦合,可热插的主键结构,比其他的框架更具扩展性和灵活性

2\_SpringMVC\_项目搭建

1创建空项目 项目和maven web模块

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设置maven和 lombok

![6aec3fe2e91fd9b0d5b6371aa611c479.png][]

创建maven web module

注意选择骨架为maven-archetype-webapp

![c33b7626d9c2943826dfd48bf1cae3ed.png][]

键入GroupID和 artfactid

![a64eac3195c4c78cb8379f2b5e08ff46.png][]

![e9fbdd243a9b7f52097cb7b852b4f81a.png][]

补充项目结构文件夹并标记文件夹

![7587d65017d75de5ea2fcf92aafaeae3.png][]

创建好目录后,选中目录,右击 mark directory as 选择对应目录类型即可

![36c3b23d4b4380277350f8004567aace.png][]

修改web.xml 中的版本约束  
可以创建一个javaEE项目,然后复制web.xml文件中的内容即可  
<?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">  
</web-app>  
创建普通Servlet,然后跳转至JSP  
导入依赖

<dependency>  
<groupId>javax.servlet</groupId>  
<artifactId>javax.servlet-api</artifactId>  
<version>4.0.1</version>  
<scope>provided</scope>  
</dependency>  
<dependency>  
<groupId>javax.servlet.jsp</groupId>  
<artifactId>javax.servlet.jsp-api</artifactId>  
<version>2.3.3</version>  
<scope>provided</scope>  
</dependency>  
创建servlet

package com.msb.controller;  
import javax.servlet.ServletException;  
import javax.servlet.annotation.WebServlet;  
import javax.servlet.http.HttpServlet;  
import javax.servlet.http.HttpServletRequest;  
import javax.servlet.http.HttpServletResponse;  
import java.io.IOException;  
/\*\*  
\* [@Author][Author]: Ma HaiYang  
\* @Description: MircoMessage:Mark\_7001  
\*/  
@WebServlet("/myServlet.do")  
public class MyServlet extends HttpServlet \{  
[@Override][Override]  
protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException \{  
req.getRequestDispatcher("first.jsp").forward(req,resp);  
\}  
\}  
准备一个first.jsp(略)

配置Tomcat启动运行项目  
添加运行的外部Tomcat环境

![280d684d0ece71c7ff25feddc5f4ac36.png][]

![d4d4e855b0620d5afcafefd7be89a76c.png][]

![51b4d54bd131e3cfa0fb595f93cfef59.png][]

将当前模块放入Tomcat

![0238ca086e8c56732c2ef3f6f974b95a.png][]

![2e0f6a4ed590efbe9ce652b90ce6838b.png][]

![1305712fdb815c61c7e41fe727bfe3c6.png][]

启动测试: 略

2导入jar依赖

<dependencies>  
  
<dependency>  
<groupId>org.springframework</groupId>  
<artifactId>spring-context</artifactId>  
<version>5.3.5</version>  
</dependency>  
  
<dependency>  
<groupId>org.springframework</groupId>  
<artifactId>spring-aspects</artifactId>  
<version>5.3.5</version>  
</dependency>  
  
<dependency>  
<groupId>aopalliance</groupId>  
<artifactId>aopalliance</artifactId>  
<version>1.0</version>  
</dependency>  
  
<dependency>  
<groupId>com.alibaba</groupId>  
<artifactId>druid</artifactId>  
<version>1.1.10</version>  
</dependency>  
  
<dependency>  
<groupId>mysql</groupId>  
<artifactId>mysql-connector-java</artifactId>  
<version>8.0.22</version>  
</dependency>  
  
<dependency>  
<groupId>org.springframework</groupId>  
<artifactId>spring-jdbc</artifactId>  
<version>5.3.5</version>  
</dependency>  
  
<dependency>  
<groupId>org.springframework</groupId>  
<artifactId>spring-tx</artifactId>  
<version>5.3.5</version>  
</dependency>  
  
<dependency>  
<groupId>org.springframework</groupId>  
<artifactId>spring-orm</artifactId>  
<version>5.3.5</version>  
</dependency>  
  
<dependency>  
<groupId>commons-logging</groupId>  
<artifactId>commons-logging</artifactId>  
<version>1.2</version>  
</dependency>  
  
<dependency>  
<groupId>org.apache.logging.log4j</groupId>  
<artifactId>log4j-slf4j-impl</artifactId>  
<version>2.14.0</version>  
<scope>test</scope>  
</dependency>  
  
<dependency>  
<groupId>org.projectlombok</groupId>  
<artifactId>lombok</artifactId>  
<version>1.18.12</version>  
<scope>provided</scope>  
</dependency>  
  
<dependency>  
<groupId>org.springframework</groupId>  
<artifactId>spring-test</artifactId>  
<version>5.3.5</version>  
<scope>test</scope>  
</dependency>  
  
<dependency>  
<groupId>org.junit.jupiter</groupId>  
<artifactId>junit-jupiter-api</artifactId>  
<version>5.7.0</version>  
<scope>test</scope>  
</dependency>  
  
<dependency>  
<groupId>org.springframework</groupId>  
<artifactId>spring-web</artifactId>  
<version>5.3.5</version>  
</dependency>  
<dependency>  
<groupId>org.springframework</groupId>  
<artifactId>spring-webmvc</artifactId>  
<version>5.3.5</version>  
</dependency>  
  
<dependency>  
<groupId>javax.servlet</groupId>  
<artifactId>javax.servlet-api</artifactId>  
<version>4.0.1</version>  
<scope>provided</scope>  
</dependency>  
<dependency>  
<groupId>javax.servlet.jsp</groupId>  
<artifactId>javax.servlet.jsp-api</artifactId>  
<version>2.3.3</version>  
<scope>provided</scope>  
</dependency>  
</dependencies>

3在web.xml中配置DispatcherServlet

<?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">  
  
<servlet>  
<servlet-name>dispatcherServlet</servlet-name>  
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
  
  
  
<load-on-startup>1</load-on-startup>  
</servlet>  
  
<servlet-mapping>  
<servlet-name>dispatcherServlet</servlet-name>  
<url-pattern>/</url-pattern>  
</servlet-mapping>  
</web-app>

4加入SpringMVC的配置文件

在resources下添加 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:p="http://www.springframework.org/schema/p"  
xmlns:c="http://www.springframework.org/schema/c"  
xmlns:util="http://www.springframework.org/schema/util"  
xmlns:context="http://www.springframework.org/schema/context"  
xmlns:aop="http://www.springframework.org/schema/aop"  
xmlns:tx="http://www.springframework.org/schema/tx"  
xsi:schemaLocation="  
http://www.springframework.org/schema/beans  
http://www.springframework.org/schema/beans/spring-beans.xsd  
http://www.springframework.org/schema/util  
http://www.springframework.org/schema/util/spring-util.xsd  
http://www.springframework.org/schema/context  
http://www.springframework.org/schema/context/spring-context.xsd  
http://www.springframework.org/schema/aop  
http://www.springframework.org/schema/aop/spring-aop.xsd  
http://www.springframework.org/schema/tx  
http://www.springframework.org/schema/tx/spring-tx.xsd  
">  
  
<context:component-scan base-package="com.msb"></context:component-scan>  
  
</beans>

添加log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>  
<Configuration status="DEBUG">  
<Appenders>  
<Console name="Console" target="SYSTEM\_OUT">  
<PatternLayout pattern="%d\{YYYY-MM-dd HH:mm:ss\} \[%t\] %-5p %c\{1\}:%L - %msg%n" />  
</Console>  
</Appenders>  
<Loggers>  
<Root level="debug">  
<AppenderRef ref="Console" />  
</Root>  
</Loggers>  
</Configuration>

5编写controller层处理器

package com.msb.controller;  
import org.springframework.stereotype.Controller;  
import org.springframework.web.bind.annotation.RequestMapping;  
import org.springframework.web.bind.annotation.ResponseBody;  
/\*\*  
\* [@Author][Author]: Ma HaiYang  
\* @Description: MircoMessage:Mark\_7001  
\*/  
@Controller  
@RequestMapping("/msb")  
public class FirstController \{  
@RequestMapping("/firstController.do")  
public String firstController()\{  
System.out.println("this is firstController");  
return "/first.jsp";  
\}  
\}

6编写视图层

<%--  
Created by IntelliJ IDEA.  
User: Mark70  
Date: 2021/4/12  
Time: 12:28  
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>  
this is first Jsp  
</body>  
</html>

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[Author]: https://my.oschina.net/arthor
[Override]: https://my.oschina.net/u/1162528
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