SpringMVC+Spring+MyBatis 整合与图片上传简单示例

时间：2023-03-08 21:00:29
SpringMVC+Spring+MyBatis 整合与图片上传简单示例

一、思路：

(一) Dao层：

1、 SqlMapConfig.xml，空文件即可。需要文件头。
2、 applicationContext_dao.xml。

a) 数据库连接池
b) SqlSessionFactory对象，需要spring和mybatis整合包下的。
c) 配置mapper文件扫描器。

(二)Service层：

1、applicationContext_service.xml包扫描器，扫描@service注解的类。
2、applicationContext_trans.xml配置事务。

(三)Controller层：

Springmvc.xml
1、包扫描器，扫描@Controller注解的类。
2、配置注解驱动。
3、视图解析器。

(四)web.xml

1. 配置spring容量监听器
2. 配置前端控制器

二、构建项目

（一）构建maven项目，添加依赖

 <?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>com.cenobitor</groupId>

   <artifactId>ssm_template</artifactId>

   <version>1.0-SNAPSHOT</version>

   <packaging>war</packaging>

   <name>ssm_template Maven Webapp</name>

   <!-- FIXME change it to the project's website -->

   <url>http://www.example.com</url>

   <properties>

     <!--设置编译的版本使用1.8版本-->

     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

     <!-- 和设置编译插件是一样的效果-->

     <maven.compiler.source>1.8</maven.compiler.source>

     <maven.compiler.target>1.8</maven.compiler.target>

     <junit.version>4.12</junit.version>

     <spring.version>4.3.10.RELEASE</spring.version>

     <servlet-api.version>2.5</servlet-api.version>

     <mybatis.version>3.2.8</mybatis.version>

     <mybatis.spring.version>1.2.2</mybatis.spring.version>

     <pagehelper.version>4.0.0</pagehelper.version>

     <javassist.version>3.11.0.GA</javassist.version>

     <mysql.version>5.1.32</mysql.version>

     <druid.version>1.0.9</druid.version>

     <commons-fileupload.version>1.3.1</commons-fileupload.version>

     <commons-lang3.version>3.3.2</commons-lang3.version>

     <commons-io.version>1.3.2</commons-io.version>

     <jackson.version>2.8.9</jackson.version>

     <jstl.version>1.2</jstl.version>

     <jsp-api.version>2.0</jsp-api.version>

     <fastjson.version>1.2.28</fastjson.version>

     <slf4j.version>1.6.4</slf4j.version>

     <lombok.version>1.16.20</lombok.version>

   </properties>

   <dependencies>

     <!-- Apache工具组件 -->

     <dependency>

       <groupId>org.apache.commons</groupId>

       <artifactId>commons-lang3</artifactId>

       <version>${commons-lang3.version}</version>

     </dependency>

     <dependency>

       <groupId>org.apache.commons</groupId>

       <artifactId>commons-io</artifactId>

       <version>${commons-io.version}</version>

     </dependency>

     <!-- Jackson Json处理工具包 -->

     <dependency>

       <groupId>com.fasterxml.jackson.core</groupId>

       <artifactId>jackson-databind</artifactId>

       <version>${jackson.version}</version>

     </dependency>

     <!--alibaba json处理工具包-->

     <dependency>

       <groupId>com.alibaba</groupId>

       <artifactId>fastjson</artifactId>

       <version>${fastjson.version}</version>

     </dependency>

     <!-- 日志处理 -->

     <dependency>

       <groupId>org.slf4j</groupId>

       <artifactId>slf4j-log4j12</artifactId>

       <version>${slf4j.version}</version>

     </dependency>

     <!--实体类get/set注解-->

     <dependency>

       <groupId>org.projectlombok</groupId>

       <artifactId>lombok</artifactId>

       <version>${lombok.version}</version>

       <scope>provided</scope>

     </dependency>

     <!--单元测试-->

     <dependency>

       <groupId>junit</groupId>

       <artifactId>junit</artifactId>

       <version>${junit.version}</version>

     </dependency>

     <!-- Spring -->

     <dependency>

       <groupId>org.springframework</groupId>

       <artifactId>spring-context</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-webmvc</artifactId>

       <version>${spring.version}</version>

     </dependency>

     <dependency>

       <groupId>org.springframework</groupId>

       <artifactId>spring-jdbc</artifactId>

       <version>${spring.version}</version>

     </dependency>

     <dependency>

       <groupId>org.springframework</groupId>

       <artifactId>spring-aspects</artifactId>

       <version>${spring.version}</version>

     </dependency>

     <dependency>

       <groupId>org.springframework</groupId>

       <artifactId>spring-jms</artifactId>

       <version>${spring.version}</version>

     </dependency>

     <dependency>

       <groupId>org.springframework</groupId>

       <artifactId>spring-context-support</artifactId>

       <version>${spring.version}</version>

     </dependency>

     <dependency>

       <groupId>org.springframework</groupId>

       <artifactId>spring-test</artifactId>

       <version>${spring.version}</version>

     </dependency>

     <!--jsp相关-->

     <dependency>

       <groupId>javax.servlet</groupId>

       <artifactId>servlet-api</artifactId>

       <version>${servlet-api.version}</version>

       <scope>provided</scope>

     </dependency>

     <!-- 文件上传组件 -->

     <dependency>

       <groupId>commons-fileupload</groupId>

       <artifactId>commons-fileupload</artifactId>

       <version>${commons-fileupload.version}</version>

     </dependency>

     <!-- Mybatis -->

     <dependency>

       <groupId>org.mybatis</groupId>

       <artifactId>mybatis</artifactId>

       <version>${mybatis.version}</version>

     </dependency>

     <dependency>

       <groupId>org.mybatis</groupId>

       <artifactId>mybatis-spring</artifactId>

       <version>${mybatis.spring.version}</version>

     </dependency>

     <!--MyBatis分页插件-->

     <dependency>

       <groupId>com.github.pagehelper</groupId>

       <artifactId>pagehelper</artifactId>

       <version>${pagehelper.version}</version>

     </dependency>

     <!-- MySql -->

     <dependency>

       <groupId>mysql</groupId>

       <artifactId>mysql-connector-java</artifactId>

       <version>${mysql.version}</version>

     </dependency>

     <!-- 连接池 -->

     <dependency>

       <groupId>com.alibaba</groupId>

       <artifactId>druid</artifactId>

       <version>${druid.version}</version>

     </dependency>

   </dependencies>

   <build>

     <finalName>ssm_template</finalName>
<!--设置mapper.xml配置与mapper类处于同个包下,否则编译时候无法生成到同一目录下,会报BindingException-->

     <resources>

       <resource>

         <directory>src/main/java</directory>

         <includes>

           <include>**/*.xml</include>

         </includes>

       </resource>

       <resource>

         <directory>src/main/resources</directory>

       </resource>

     </resources>

     <plugins>

       <!-- 配置Tomcat7插件 -->

       <plugin>

         <groupId>org.apache.tomcat.maven</groupId>

         <artifactId>tomcat7-maven-plugin</artifactId>

         <version>2.2</version>

         <configuration>

           <uriEncoding>UTF-8</uriEncoding>

         </configuration>

       </plugin>

       <!-- 配置打包时跳过测试  -->

       <plugin>

         <groupId>org.apache.maven.plugins</groupId>

         <artifactId>maven-surefire-plugin</artifactId>

         <version>2.12.4</version>

       </plugin>

     </plugins>

   </build>

 </project>

（二）applicationContext.xml的配置

1、applicationContext_dao.xml（数据库）的配置

 <?xml version="1.0" encoding="UTF-8"?>

 <beans xmlns="http://www.springframework.org/schema/beans"

        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-4.0.xsd

             http://www.springframework.org/schema/context

             http://www.springframework.org/schema/context/spring-context-4.0.xsd">

     <!-- dao层 数据库连接部分-->

     <!-- 加载配置文件 -->

     <context:property-placeholder location="classpath:properties/db.properties" />

     <!-- 数据库连接池 -->

     <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close">

         <property name="driverClassName" value="${jdbc.driver}" />

         <property name="url" value="${jdbc.url}" />

         <property name="username" value="${jdbc.username}" />

         <property name="password" value="${jdbc.password}"/>

         <!-- 连接池的最大数据库连接数 -->

         <property name="maxActive" value="10" />

         <!-- 最大空闲数 -->

         <property name="maxIdle" value="5" />

     </bean>

     <!-- 配置SqlSessionFactory单例 -->

     <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

         <!-- 配置数据源 -->

         <property name="dataSource" ref="dataSource" />

         <!-- 加载mybatis核心配置文件 -->

         <property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml" />

         <!--别名包扫描-->

         <property name="typeAliasesPackage" value="com.cenobitor.pojo"/>

     </bean>

     <!-- 动态代理dao配置，包扫描(推荐方式)-->

     <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

         <!-- 支持多包配置，多包时用,或者;分隔 -->

         <property name="basePackage" value="com.cenobitor.mapper" />

     </bean>

 </beans>
 jdbc.driver=com.mysql.jdbc.Driver

 jdbc.url=jdbc:mysql://localhost:3306/ssm?characterEncoding=utf-8

 jdbc.username=root

 jdbc.password=

2、applicationContext_service.xml（service扫描）的配置

 <?xml version="1.0" encoding="UTF-8"?>

 <beans xmlns="http://www.springframework.org/schema/beans"

        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-4.0.xsd

             http://www.springframework.org/schema/context

             http://www.springframework.org/schema/context/spring-context-4.0.xsd">

     <!-- 配置service扫描 -->

     <context:component-scan base-package="com.cenobitor.service"/>

 </beans>

3、applicationContext_trans.xml（事务）的配置

 <?xml version="1.0" encoding="UTF-8"?>

 <beans xmlns="http://www.springframework.org/schema/beans"

        xmlns:aop="http://www.springframework.org/schema/aop"

        xmlns:tx="http://www.springframework.org/schema/tx"

        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-4.0.xsd

             http://www.springframework.org/schema/aop

             http://www.springframework.org/schema/aop/spring-aop-4.0.xsd

             http://www.springframework.org/schema/tx

             http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">

     <!-- 事务管理器 -->

     <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

         <!--数据源-->

         <property name="dataSource" ref="dataSource"/>

     </bean>

     <!-- 通知 -->

     <tx:advice id="txAdvice" transaction-manager="transactionManager">

         <tx:attributes>

             <tx:method name="save*" propagation="REQUIRED"/>

             <tx:method name="insert*" propagation="REQUIRED"/>

             <tx:method name="delete*" propagation="REQUIRED"/>

             <tx:method name="update*" propagation="REQUIRED"/>

             <tx:method name="find*" propagation="SUPPORTS" read-only="true"/>

             <tx:method name="get*" propagation="SUPPORTS" read-only="true"/>

             <tx:method name="query*" propagation="SUPPORTS" read-only="true"/>

         </tx:attributes>

     </tx:advice>

     <!-- 切面 -->

     <aop:config>

         <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.cenobitor.service.*.*(..))"/>

     </aop:config>

 </beans>

（三）web.xml 的配置

 <?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"

          id="WebApp_ID" version="2.5">

     <welcome-file-list>

         <welcome-file>index.jsp</welcome-file>

     </welcome-file-list>

     <!-- spring配置文件路径 -->

     <context-param>

         <param-name>contextConfigLocation</param-name>

         <param-value>classpath:/spring/applicationContext_*.xml</param-value>

     </context-param>

     <!-- 解决post乱码问题 -->

     <filter>

         <filter-name>encoding</filter-name>

         <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

         <!-- 设置编码参是UTF8 -->

         <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>

     <listener>

         <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

     </listener>

     <!-- 配置SpringMvc 前端控制器 -->

     <servlet>

         <servlet-name>springmvc</servlet-name>

         <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

         <!--指定SpringMvc 配置文件-->

         <!-- springmvc的配置文件默认路径是 /WEB-INF/${servlet-name}_servlet.xml -->

         <init-param>

             <param-name>contextConfigLocation</param-name>

             <param-value>classpath:spring/springmvc.xml</param-value>

         </init-param>

     </servlet>

     <servlet-mapping>

         <servlet-name>springmvc</servlet-name>

         <url-pattern>*.action</url-pattern>

     </servlet-mapping>

 </web-app>

（四）MyBatis的配置文件，实体类和对应的映射文件由通用Mapper生成，在此采用手动创建方式（详细见下文件图片上传案例）

此处建文件,配置mybatis分页插件即可：

 <?xml version="1.0" encoding="UTF-8" ?>

 <!DOCTYPE configuration

         PUBLIC "-//mybatis.org//DTD Config 3.0//EN"

         "http://mybatis.org/dtd/mybatis-3-config.dtd">

 <configuration>

     <plugins>

         <!-- com.github.pagehelper为PageHelper类所在包名 -->

         <plugin interceptor="com.github.pagehelper.PageHelper">

             <!-- 设置数据库类型 Oracle,Mysql,MariaDB,SQLite,Hsqldb,PostgreSQL六种数据库-->

             <property name="dialect" value="mysql"/>

         </plugin>

     </plugins>

 </configuration>

（五）springMVC的配置

 <?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-4.0.xsd

               http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd

               http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">

     <!--配置controller扫描-->

     <context:component-scan base-package="com.cenobitor.controller"/>

     <!-- 注解驱动 -->

     <mvc:annotation-driven/>

     <!--&lt;!&ndash;自定义转换器配置模板&ndash;&gt;

     &lt;!&ndash;使用自定义转换器&ndash;&gt;

     <mvc:annotation-driven conversion-service="myConverter" />

     &lt;!&ndash; 定义转换器 &ndash;&gt;

     <bean id="myConverter" class="org.springframework.format.support.FormattingConversionServiceFactoryBean">

         <property name="converters">

             <set>

                 &lt;!&ndash; 日期转换器 &ndash;&gt;

                 <bean class="com.cenobitor.converter.DateConverter" />

             </set>

         </property>

     </bean>-->

     <!-- 配置多媒体解析器，用于上传等的配置，如果是纯文本则无需配置 -->

     <!-- 注意：这里的id只能是multipartResolver -->

     <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">

         <!-- 限定文件最大上传大小为：8MB -->

         <property name="maxUploadSize" value="8388608" />

     </bean>

     <!--可减少简写路径名-->

     <!--<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

         &lt;!&ndash; 配置逻辑视图的前缀 &ndash;&gt;

         <property name="prefix" value="/WEB-INF/views/"/>

         <property name="suffix" value=".jsp"/>

     </bean>-->

 </beans>

（六）log4j配置文件，位于resources包下：

 log4j.rootLogger=DEBUG, Console

 #Console

 log4j.appender.Console=org.apache.log4j.ConsoleAppender

 log4j.appender.Console.layout=org.apache.log4j.PatternLayout

 log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n

 log4j.logger.java.sql.ResultSet=INFO

 log4j.logger.org.apache=INFO

 log4j.logger.java.sql.Connection=DEBUG

 log4j.logger.java.sql.Statement=DEBUG

 log4j.logger.java.sql.PreparedStatement=DEBUG

三、 图片上传预览

1、创建表以及pojo

 CREATE TABLE `pic` (

   `id` int(11) NOT NULL AUTO_INCREMENT,

   `name` varchar(255) DEFAULT NULL,

   `url` varchar(255) DEFAULT NULL,

   PRIMARY KEY (`id`)

 ) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=utf8
 package com.cenobitor.pojo;

 import lombok.Data;

 /**

  * @Description:

  * @Date: Created in 11:05 AM 2018/5/1

  * @Author: Cenobitor

  * @Modified By:

  */

 @Data

 public class Pic {

     private Integer id;

     private String name;

     private String url;

     public Pic(String name, String url) {

         this.name = name;

         this.url = url;

     }

     public Pic() {

     }

 }

2、设置文件存储的虚拟路径

SpringMVC+Spring+MyBatis 整合与图片上传简单示例

2、创建上传页面

 <!DOCTYPE html>

 <html lang="en">

 <head>

     <meta charset="UTF-8">

     <title>上传图片</title>

 </head>

 <body>

     <form id="upload" action="/uploadpic.action" method="post" enctype="multipart/form-data">

         <input type="file"  name="picFile"/>

         <br/>

         <input type="submit" value="提交"/>

     </form>

 </body>

 </html>

3、创建Controller类

 package com.cenobitor.controller;

 import com.cenobitor.service.UploadFileService;

 import org.springframework.beans.factory.annotation.Autowired;

 import org.springframework.stereotype.Controller;

 import org.springframework.web.bind.annotation.*;

 import org.springframework.web.multipart.MultipartFile;

 @Controller

 public class UploadFileController {

     @Autowired

     private UploadFileService uploadFileService;

     //图片上传用MultipartFile接收文件,其中参数名要表单中的文件名一致

     @RequestMapping("/uploadpic")

     public String uploadPic(MultipartFile picFile) throws Exception {

         String picUrl = uploadFileService.UploadPic(picFile);

         if (picUrl == null){

             return "redirect:error.html";

         }

         //重定向预览图片

         return "redirect:"+picUrl;

     }

 }

4、创建service层

 public interface UploadFileService {

     public String UploadPic(MultipartFile picFile);

 }
 package com.cenobitor.service.impl;

 import com.cenobitor.mapper.PicMapper;

 import com.cenobitor.pojo.Pic;

 import com.cenobitor.service.UploadFileService;

 import org.springframework.beans.factory.annotation.Autowired;

 import org.springframework.stereotype.Service;

 import org.springframework.transaction.annotation.Transactional;

 import org.springframework.web.multipart.MultipartFile;

 import java.io.File;

 import java.io.IOException;

 import java.util.UUID;

 @Service

 @Transactional

 public class UploadFileServiceImpl implements UploadFileService {

     @Autowired

     private PicMapper picMapper;

     @Override

     public String UploadPic(MultipartFile picFile) {

         try {

             // 图片新名字

             String name = UUID.randomUUID().toString();

             // 图片原名字

             String oldName = picFile.getOriginalFilename();

             // 后缀名

             String exeName = oldName.substring(oldName.lastIndexOf("."));

             //保存图片路径为绝对路径

             File pic = new File("/Users/Shared/jpg/" + name + exeName);

             // 保存图片到本地磁盘

             picFile.transferTo(pic);

             //保存数据到数据库中

             picMapper.add(new Pic(name,"../jpg/"+name+exeName));

             return "/jpg/"+name+exeName;

         } catch (IOException e) {

             e.printStackTrace();

             return null;

         }

     }

 }

5、创建dao层（mapper层）

 package com.cenobitor.mapper;

 import com.cenobitor.pojo.Pic;

 public interface PicMapper {

     //添加图片

     int add(Pic pic);

 }
 <?xml version="1.0" encoding="UTF-8" ?>

 <!DOCTYPE mapper

         PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"

         "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

 <!--namespace为对应的mapper类的全路径名-->

 <mapper namespace="com.cenobitor.mapper.PicMapper">

     <!-- 添加 -->

     <!-- id为对应的方法名, parameterType为入参的全路径名-->

     <insert id="add" parameterType = "com.cenobitor.pojo.Pic">

         insert into

         pic(name,url)

         values

         (#{name},#{url});

     </insert>

 </mapper>

6、项目的目录结构

SpringMVC+Spring+MyBatis 整合与图片上传简单示例

7、效果

SpringMVC+Spring+MyBatis 整合与图片上传简单示例

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