SpringMVC（一）简介环境搭建.

文章目录

SpringMVC（一）简介环境搭建.

SpringMVC简介
环境搭建
springMVC环境搭建

SpringMVC简介

SpringMVC 运行原理图
在这里插入图片描述

环境搭建

springMVC环境搭建

导包

直接导入相关jar
在这里插入图片描述

Maven方式

  <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>
        <spring.version>4.3.18.RELEASE</spring.version>
    </properties>
<dependencies>
        <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.2</version>
        </dependency>

        <!-- spring start -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- spring end -->

        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.0</version>
            <scope>provided</scope>
        </dependency>

</dependencies>

在 web.xml 中配置前端控制器 DispatcherServlet 和字符编码过滤器

<servlet>
    <servlet-name>spring-mvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!--    contextConfigLocation 在 DispatcherServlet的父类FrameworkServlet中
            如果不配置的话，默认在WEB-INF文件夹下寻找，且文件名需以 *-servlet.xml 结尾
        -->
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:springmvc.xml</param-value>
    </init-param>
    <!--配置启动web容器的时候实例化当前servlet实例-->
    <load-on-startup>0</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>spring-mvc</servlet-name>
    <!-- 配置为 /  表示拦截所有请求，但是不拦截 .jsp -->
    <url-pattern>/</url-pattern>
</servlet-mapping>

<!-- 字符编码过滤器 -->
<filter>
    <filter-name>encoding</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>encoding</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

新建（src下）并配置 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:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">

    <!-- 扫描注解-->
    <context:component-scan base-package="com.fu.controller" use-default-filters="false">
        <!-- 只扫描控制器 -->
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

    <!--注解驱动，以使得访问路径与方法的匹配可以通过注解配置-->
    <mvc:annotation-driven />
    <!-- 处理静态资源 -->
    <mvc:default-servlet-handler />
</beans>

编写控制器类

@Controller
public class PersonController {
    @RequestMapping("demo1")
    public String demo1() {
        System.out.println("执行demo1");
        return "success.jsp";
    }
}