A, Eclipse Maven project
Second, configure Maven pom.xml file dependence
1, modify the error: At this point, Maven project has a error, displayed in pom.xml, web.xml file is missing
Solution: Right-click the project, select Java EE Tools, choose Generate Deployment Descriptor Sub, automatically generates web.xml file
2, Baidu search Maven Repository , Maven dependencies inquiry into the official website, enter spring search, click
Choose the highest number of relatively new version 5.1.5.RELEASE SpringMVC
Click Maven dependent on configuration, copy the file to the project pom.xml
code show as below:
<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.1.5.RELEASE</version>
</dependency>
It appears several packages in the project Libraries-Maven Dependencies dependent on the success of the import.
It can be seen to have been introduced together SpringMVC Spring came dependent correlation, if Spring core jar package do not need to manually add the configuration.
Creating index.jsp file in the webapp directory
At this point, there is an error of a javaax.servelt.http.HttpServlet
Solution: Add rely servlet
In Maven Repository Search Keyword servelt official website, click on the first Java Servlet API
Here selection 4.0.1 and 3.1.0 versions can be
把依赖配置信息复制到项目的pom.xml文件中
代码如下：
<!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>4.0.1</version>
<scope>provided</scope>
</dependency>
pom.xml全部依赖配置完成，代码如下：
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.jmxk</groupId>
<artifactId>SpringMVCC</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<dependencies>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.1.5.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>4.0.1</version>
<scope>provided</scope>
</dependency>
</dependencies>
</project>三、配置web.xml文件
百度搜索SpringMVC，进入Spring Framwork官网，点击Spring MVC
下滑，找到web.xml文件配置
把官网的web.xml信息复制到自己项目的web.xml文件中，根据自己的实际情况修改，具体如下：
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
<display-name>SpringMVCC</display-name>
<!-- 欢迎页面 -->
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!-- Spring监听器 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- Spring核心配置 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-core.xml</param-value>
</context-param>
<!-- SpringMVC配置 -->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 加载SpringMVC配置文件 -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-web.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- 配置SpringMVC的拦截规则 -->
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>四、配置Spring和SpringMVC的xml文件
1、在resources目录下新建两个xml文件：spring-core.xml和spring-web.xml。
spring-core.xml用于spring的配置管理
spring-web.xml用于spirngMVC的配置管理
在springMVC的官方文档中，用浏览器按Ctrl+F搜索xmlns（xml namespace英文缩写），找到spring的xml配置信息
复制xml的配置文件，拷贝到spring-core.xml文件中，根据自己的项目修改配置
spring-core.xml配置如下：
<?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:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
https://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd">
<!-- 开启注解类扫描 -->
<context:component-scan base-package="com.jmxk"/>
<!-- ... -->
</beans>在springMVC的官方文档中，继续向下搜索xmlns关键字，找到MVC的配置文件信息
把配置文件复制到spring-web.xml文件中
在spring-web.xml同样需要扫描注解类，因此需要在<beans>标签中添加spring-context约束：（在spring-core中复制即可）
xmlns:context="http://www.springframework.org/schema/context" http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd">spring-web.xml配置文件如下：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
https://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/mvc
https://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd">
<mvc:annotation-driven/>
<!-- 开启注解类扫描 -->
<context:component-scan base-package="com.jmxk.web"/>
</beans>五、编写controller类，验证项目配置
1、在Maven项目的src/main/java下创建HelloSpringMVC类
HelloSpringMVC.java代码如下：
package com.jmxk.web;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class HelloSpringMVC {
@RequestMapping("/hello")
public String hello() {
return "hello.jsp";
}
}
在webapp下创建hello.jsp用于跳转成功页面
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Hello SpringMVC!</title>
</head>
<body>
<h2>Hello SpringMVC!</h2>
</body>
</html>在index.jsp中添加跳转代码：
<a href="http://localhost:8080/SpringMVCC/hello"> hello</a>六、发布项目到Tomcat上，浏览器运行http://localhost:8080/SpringMVCC
点击hello，跳转成功!
