SpringMVC学习笔记
新建项目
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新建一个空项目
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项目下添加一个maven的module，记得用ArcheType那个mavenweb模板
记得Archetype的位置用maven-archetype-webapp模板,然后等待自动创建，自动下载。
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接下来补齐项目结构：添加上java和resources文件夹
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配置文件pom.xml的编写
<?xml version="1.0" encoding="UTF-8"?>
<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>org.example</groupId>
<artifactId>mvc_demo1</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>mvc_demo1 Maven Webapp</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
</properties>
<dependencies>
<!-- spring核心 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.2.12.RELEASE</version>
</dependency>
<!-- spring web -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>5.2.12.RELEASE</version>
</dependency>
<!-- springMVC -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.2.12.RELEASE</version>
</dependency>
<!-- servlet -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<!-- jsp -->
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.0</version>
<scope>provided</scope>
</dependency>
<!-- jackson -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.9.0</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.0</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.9.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<!-- tomcat插件 -->
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.1</version>
<configuration>
<port>8080</port>
<path>/</path>
<uriEncoding>UTF-8</uriEncoding>
<server>tomcat7</server>
<systemProperties>
<java.util.logging.SimpleFormatter.format>%1$tH:%1$tM:%1$tS %2$s%n%4$s: %5$s%6$s%n
</java.util.logging.SimpleFormatter.format>
</systemProperties>
</configuration>
</plugin>
</plugins>
</build>
</project>
- web.xml文件的编写
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app>
<display-name>Archetype Created Web Application</display-name>
<!--SpringMVC前端控制器，本质是一个Servlet，接收所有请求，在容器启动时就会加载-->
<servlet>
<servlet-name>dispatcherServlet</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>
<servlet-name>dispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
springmvc前端控制器配置部分有个加载文件，springmvc.xml，自己新建，放在resources文件夹下
- springmvc.xml文件的编写
<?xml version="1.0" encoding="UTF-8"?>
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<!-- 扫描包 -->
<context:component-scan base-package="com.itbaizhan"/>
<!-- 开启SpringMVC注解的支持 -->
<mvc:annotation-driven/>
</beans>
开启了包扫描的位置，需要你自己去补全包结构，在java文件夹下补全com.itbaizhan，这个看你自己项目结构。
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接下来配置tomcat服务器，建议用maven下的tomcat7:run
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SpringMVC执行流程
界面控制器捕获请求，寻找控制器，方法映射器找到方法执行链，反馈给方法适配器，执行方法，将结果再反馈给界面控制器。界面控制器将内容给界面解析器。作用于视图
- 核心就是接受请求，获取参数，加上处理请求。