# springMVC

**Repository Path**: MarkPolaris/springMVC

## Basic Information

- **Project Name**: springMVC
- **Description**: 第一个springMVC
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2019-07-29
- **Last Updated**: 2020-12-19

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

#### SpringMVC处理请求流程

![5d3f9574f33fc51524](https://i.loli.net/2019/07/30/5d3f9574f33fc51524.png)

![5d3f9748cda3776019](https://i.loli.net/2019/07/30/5d3f9748cda3776019.jpg)

#### 新建一个springMVC项目

1. archetype选择maven-webapp

![5d3eabe1106d736073](https://i.loli.net/2019/07/29/5d3eabe1106d736073.png)

2. maven选择自己的配置文件和仓库，包名项目名填上就好

3. 添加缺少的文件夹，并配置其属性

![5d3eac578002b91172](https://i.loli.net/2019/07/29/5d3eac578002b91172.png)

在Project Structure 的 module中配置属性

![5d3eacb63d63e40854](https://i.loli.net/2019/07/29/5d3eacb63d63e40854.png)

4. 配置pom.xml

```xml
<properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <spring.version>5.1.5.RELEASE</spring.version>
    </properties>

    <dependencies>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>

        <!-- lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.4</version>
        </dependency>

        <!-- spring-core -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <!-- spring-context -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-expression</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <!-- spring-test -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring.version}</version>
            <scope>test</scope>
        </dependency>

        <!-- spring-webmvc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <!-- spring整合mybatis相关依赖 -->
        <!-- spring-jdbc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!--mybatis-spring整合包-->
        <!-- mybatis-spring -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.1</version>
        </dependency>
        <!-- mybatis配置 -->
        <!-- mybatis -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.6</version>
        </dependency>
        <!-- mysql配置 -->
        <!-- mysql-connector-java -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.46</version>
        </dependency>
        <!-- druid数据源 -->
        <!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.10</version>
        </dependency>
        <!-- /spring整合mybatis相关依赖 -->

        <!-- log4j -->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>

        <!-- org.slf4j/slf4j-log4j12 -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.25</version>
        </dependency>


        <!-- commons-lang3 字符串处理-->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.8.1</version>
        </dependency>

        <!-- cglib 动态代理-->
        <dependency>
            <groupId>cglib</groupId>
            <artifactId>cglib</artifactId>
            <version>3.2.12</version>
        </dependency>

        <!-- aspectjweaver spring aop-->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.9.4</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/com.alibaba/fastjson -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.47</version>
        </dependency>


    </dependencies>
```

5. 配置Tomcat

![5d3ead8985ab057722](https://i.loli.net/2019/07/29/5d3ead8985ab057722.png)

6. 配置spring-mvc.xml

```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/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.alibaba.com/schema/stat http://www.alibaba.com/schema/stat.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!--配置映射器-->
    <!--扫描-->
    <context:component-scan base-package="com.neuedu.controller"/>
    <!--视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views"/>
        <property name="suffix" value=".jsp"/>
     </bean>
    <mvc:annotation-driven/>
</beans>
```

7. 配置web.xml

```xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.1" 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_3_1.xsd">
    <!--配置DispatcherServlet -->
    <servlet>
        <servlet-name>springDispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springDispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>
```

8. 写一个控制器, 传数据给user.jsp

```java
package com.neuedu.controller;


import com.neuedu.entity.User;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

/**
 * @Author: MARK
 * @Date: 2019/7/29 19:14
 * @version: 1.0.0
 * @Description:
 */

@Controller
@Slf4j
@RequestMapping("/user")
public class UserController {
    @RequestMapping("/user")
    // @GetMapping("/u")
    public ModelAndView users(){
        log.info("控制器");
        User user = new User();
        user.setName("张san");
        ModelAndView modelAndView = new ModelAndView();
        modelAndView.addObject("user", user);
        modelAndView.setViewName("/user/user");
        return modelAndView;
    }
}
```

9. user.jsp   通过el表达式获取数据

```javascript
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
${user.getName()}
</body>
</html>
```

10. 效果

![5d3eeecab34f223214](https://i.loli.net/2019/07/29/5d3eeecab34f223214.png)

### 项目重构

> 1. 将jsp文件放到WEB-INF中，进行分类存放
>    
>    ![5d3fbf689a9ba81891](https://i.loli.net/2019/07/30/5d3fbf689a9ba81891.png) 

> 2. 访问时多一层'springMVC_war_exploded'路径，编辑Tomcat服务器，选择deployment

![5d3fbc7cc68ba57845](https://i.loli.net/2019/07/30/5d3fbc7cc68ba57845.png)

> 拉倒最下面，删掉application  context中的路径

![5d3fbacc2bd7764522](https://i.loli.net/2019/07/30/5d3fbacc2bd7764522.png)

> 运行一下

![5d3fbce8166d480750](https://i.loli.net/2019/07/30/5d3fbce8166d480750.png)