SpringMVC+Spring+MyBatis 整合与图片上传简单示例
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2022-09-30 20:02:40
本文主要介绍如何对Spring、MyBatis、springmvc进行整合，给出一系列的配置文件，并进行了图片上传简单示例。 ......
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
1 <?xml version="1.0" encoding="UTF-8"?>
2
3 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
5 <modelVersion>4.0.0</modelVersion>
6
7 <groupId>com.cenobitor</groupId>
8 <artifactId>ssm_template</artifactId>
9 <version>1.0-SNAPSHOT</version>
10 <packaging>war</packaging>
11
12 <name>ssm_template Maven Webapp</name>
13 <!-- FIXME change it to the project's website -->
14 <url>http://www.example.com</url>
15
16 <properties>
17 <!--设置编译的版本使用1.8版本-->
18 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
19 <!-- 和设置编译插件是一样的效果-->
20 <maven.compiler.source>1.8</maven.compiler.source>
21 <maven.compiler.target>1.8</maven.compiler.target>
22
23
24 <junit.version>4.12</junit.version>
25 <spring.version>4.3.10.RELEASE</spring.version>
26 <servlet-api.version>2.5</servlet-api.version>
27 <mybatis.version>3.2.8</mybatis.version>
28 <mybatis.spring.version>1.2.2</mybatis.spring.version>
29 <pagehelper.version>4.0.0</pagehelper.version>
30 <javassist.version>3.11.0.GA</javassist.version>
31 <mysql.version>5.1.32</mysql.version>
32 <druid.version>1.0.9</druid.version>
33 <commons-fileupload.version>1.3.1</commons-fileupload.version>
34 <commons-lang3.version>3.3.2</commons-lang3.version>
35 <commons-io.version>1.3.2</commons-io.version>
36 <jackson.version>2.8.9</jackson.version>
37 <jstl.version>1.2</jstl.version>
38 <jsp-api.version>2.0</jsp-api.version>
39 <fastjson.version>1.2.28</fastjson.version>
40 <slf4j.version>1.6.4</slf4j.version>
41 <lombok.version>1.16.20</lombok.version>
42 </properties>
43
44 <dependencies>
45 <!-- Apache工具组件 -->
46 <dependency>
47 <groupId>org.apache.commons</groupId>
48 <artifactId>commons-lang3</artifactId>
49 <version>${commons-lang3.version}</version>
50 </dependency>
51 <dependency>
52 <groupId>org.apache.commons</groupId>
53 <artifactId>commons-io</artifactId>
54 <version>${commons-io.version}</version>
55 </dependency>
56 <!-- Jackson Json处理工具包 -->
57 <dependency>
58 <groupId>com.fasterxml.jackson.core</groupId>
59 <artifactId>jackson-databind</artifactId>
60 <version>${jackson.version}</version>
61 </dependency>
62
63 <!--alibaba json处理工具包-->
64 <dependency>
65 <groupId>com.alibaba</groupId>
66 <artifactId>fastjson</artifactId>
67 <version>${fastjson.version}</version>
68 </dependency>
69 <!-- 日志处理 -->
70 <dependency>
71 <groupId>org.slf4j</groupId>
72 <artifactId>slf4j-log4j12</artifactId>
73 <version>${slf4j.version}</version>
74 </dependency>
75 <!--实体类get/set注解-->
76 <dependency>
77 <groupId>org.projectlombok</groupId>
78 <artifactId>lombok</artifactId>
79 <version>${lombok.version}</version>
80 <scope>provided</scope>
81 </dependency>
82 <!--单元测试-->
83 <dependency>
84 <groupId>junit</groupId>
85 <artifactId>junit</artifactId>
86 <version>${junit.version}</version>
87 </dependency>
88
89 <!-- Spring -->
90 <dependency>
91 <groupId>org.springframework</groupId>
92 <artifactId>spring-context</artifactId>
93 <version>${spring.version}</version>
94 </dependency>
95 <dependency>
96 <groupId>org.springframework</groupId>
97 <artifactId>spring-beans</artifactId>
98 <version>${spring.version}</version>
99 </dependency>
100 <dependency>
101 <groupId>org.springframework</groupId>
102 <artifactId>spring-webmvc</artifactId>
103 <version>${spring.version}</version>
104 </dependency>
105 <dependency>
106 <groupId>org.springframework</groupId>
107 <artifactId>spring-jdbc</artifactId>
108 <version>${spring.version}</version>
109 </dependency>
110 <dependency>
111 <groupId>org.springframework</groupId>
112 <artifactId>spring-aspects</artifactId>
113 <version>${spring.version}</version>
114 </dependency>
115 <dependency>
116 <groupId>org.springframework</groupId>
117 <artifactId>spring-jms</artifactId>
118 <version>${spring.version}</version>
119 </dependency>
120 <dependency>
121 <groupId>org.springframework</groupId>
122 <artifactId>spring-context-support</artifactId>
123 <version>${spring.version}</version>
124 </dependency>
125 <dependency>
126 <groupId>org.springframework</groupId>
127 <artifactId>spring-test</artifactId>
128 <version>${spring.version}</version>
129 </dependency>
130 <!--jsp相关-->
131 <dependency>
132 <groupId>javax.servlet</groupId>
133 <artifactId>servlet-api</artifactId>
134 <version>${servlet-api.version}</version>
135 <scope>provided</scope>
136 </dependency>
137 <!-- 文件上传组件 -->
138 <dependency>
139 <groupId>commons-fileupload</groupId>
140 <artifactId>commons-fileupload</artifactId>
141 <version>${commons-fileupload.version}</version>
142 </dependency>
143 <!-- Mybatis -->
144 <dependency>
145 <groupId>org.mybatis</groupId>
146 <artifactId>mybatis</artifactId>
147 <version>${mybatis.version}</version>
148 </dependency>
149 <dependency>
150 <groupId>org.mybatis</groupId>
151 <artifactId>mybatis-spring</artifactId>
152 <version>${mybatis.spring.version}</version>
153 </dependency>
154 <!--MyBatis分页插件-->
155 <dependency>
156 <groupId>com.github.pagehelper</groupId>
157 <artifactId>pagehelper</artifactId>
158 <version>${pagehelper.version}</version>
159 </dependency>
160 <!-- MySql -->
161 <dependency>
162 <groupId>mysql</groupId>
163 <artifactId>mysql-connector-java</artifactId>
164 <version>${mysql.version}</version>
165 </dependency>
166 <!-- 连接池 -->
167 <dependency>
168 <groupId>com.alibaba</groupId>
169 <artifactId>druid</artifactId>
170 <version>${druid.version}</version>
171 </dependency>
172
173 </dependencies>
174
175 <build>
176 <finalName>ssm_template</finalName>
177 <!--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-->
178 <resources>
179 <resource>
180 <directory>src/main/java</directory>
181 <includes>
182 <include>**/*.xml</include>
183 </includes>
184 </resource>
185 <resource>
186 <directory>src/main/resources</directory>
187 </resource>
188 </resources>
189
190 <plugins>
191 <!-- 配置Tomcat7插件 -->
192 <plugin>
193 <groupId>org.apache.tomcat.maven</groupId>
194 <artifactId>tomcat7-maven-plugin</artifactId>
195 <version>2.2</version>
196 <configuration>
197 <uriEncoding>UTF-8</uriEncoding>
198 </configuration>
199 </plugin>
200 <!-- 配置打包时跳过测试 -->
201 <plugin>
202 <groupId>org.apache.maven.plugins</groupId>
203 <artifactId>maven-surefire-plugin</artifactId>
204 <version>2.12.4</version>
205 </plugin>
206 </plugins>
207 </build>
208
209 </project>
（二）applicationContext.xml的配置
1、applicationContext_dao.xml（数据库）的配置
1 <?xml version="1.0" encoding="UTF-8"?>
2 <beans xmlns="http://www.springframework.org/schema/beans"
3 xmlns:context="http://www.springframework.org/schema/context"
4 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
5 xsi:schemaLocation="http://www.springframework.org/schema/beans
6 http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
7 http://www.springframework.org/schema/context
8 http://www.springframework.org/schema/context/spring-context-4.0.xsd">
9
10
11 <!-- dao层 数据库连接部分-->
12 <!-- 加载配置文件 -->
13 <context:property-placeholder location="classpath:properties/db.properties" />
14
15 <!-- 数据库连接池 -->
16 <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close">
17 <property name="driverClassName" value="${jdbc.driver}" />
18 <property name="url" value="${jdbc.url}" />
19 <property name="username" value="${jdbc.username}" />
20 <property name="password" value="${jdbc.password}"/>
21 <!-- 连接池的最大数据库连接数 -->
22 <property name="maxActive" value="10" />
23 <!-- 最大空闲数 -->
24 <property name="maxIdle" value="5" />
25 </bean>
26 <!-- 配置SqlSessionFactory单例 -->
27 <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
28 <!-- 配置数据源 -->
29 <property name="dataSource" ref="dataSource" />
30 <!-- 加载mybatis核心配置文件 -->
31 <property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml" />
32 <!--别名包扫描-->
33 <property name="typeAliasesPackage" value="com.cenobitor.pojo"/>
34
35 </bean>
36 <!-- 动态代理dao配置，包扫描(推荐方式)-->
37 <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
38 <!-- 支持多包配置，多包时用,或者;分隔 -->
39 <property name="basePackage" value="com.cenobitor.mapper" />
40 </bean>
41 </beans>
1 jdbc.driver=com.mysql.jdbc.Driver 2 jdbc.url=jdbc:mysql://localhost:3306/ssm?characterEncoding=utf-8 3 jdbc.username=root 4 jdbc.password=
2、applicationContext_service.xml（service扫描）的配置
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:context="http://www.springframework.org/schema/context" 4 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 5 xsi:schemaLocation="http://www.springframework.org/schema/beans 6 http://www.springframework.org/schema/beans/spring-beans-4.0.xsd 7 http://www.springframework.org/schema/context 8 http://www.springframework.org/schema/context/spring-context-4.0.xsd"> 9 10 <!-- 配置service扫描 --> 11 <context:component-scan base-package="com.cenobitor.service"/> 12 13 </beans>
3、applicationContext_trans.xml（事务）的配置
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:aop="http://www.springframework.org/schema/aop" 4 xmlns:tx="http://www.springframework.org/schema/tx" 5 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 6 xsi:schemaLocation="http://www.springframework.org/schema/beans 7 http://www.springframework.org/schema/beans/spring-beans-4.0.xsd 8 http://www.springframework.org/schema/aop 9 http://www.springframework.org/schema/aop/spring-aop-4.0.xsd 10 http://www.springframework.org/schema/tx 11 http://www.springframework.org/schema/tx/spring-tx-4.0.xsd"> 12 13 <!-- 事务管理器 --> 14 <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> 15 <!--数据源--> 16 <property name="dataSource" ref="dataSource"/> 17 </bean> 18 <!-- 通知 --> 19 <tx:advice id="txAdvice" transaction-manager="transactionManager"> 20 <tx:attributes> 21 <tx:method name="save*" propagation="REQUIRED"/> 22 <tx:method name="insert*" propagation="REQUIRED"/> 23 <tx:method name="delete*" propagation="REQUIRED"/> 24 <tx:method name="update*" propagation="REQUIRED"/> 25 <tx:method name="find*" propagation="SUPPORTS" read-only="true"/> 26 <tx:method name="get*" propagation="SUPPORTS" read-only="true"/> 27 <tx:method name="query*" propagation="SUPPORTS" read-only="true"/> 28 </tx:attributes> 29 </tx:advice> 30 31 <!-- 切面 --> 32 <aop:config> 33 <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.cenobitor.service.*.*(..))"/> 34 </aop:config> 35 </beans>
（三）web.xml 的配置
1 <?xml version="1.0" encoding="UTF-8"?>
2 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
3 xmlns="http://java.sun.com/xml/ns/javaee"
4 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
5 http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
6 id="WebApp_ID" version="2.5">
7 <welcome-file-list>
8 <welcome-file>index.jsp</welcome-file>
9 </welcome-file-list>
10
11 <!-- spring配置文件路径 -->
12 <context-param>
13 <param-name>contextConfigLocation</param-name>
14 <param-value>classpath:/spring/applicationContext_*.xml</param-value>
15 </context-param>
16
17 <!-- 解决post乱码问题 -->
18 <filter>
19 <filter-name>encoding</filter-name>
20 <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
21 <!-- 设置编码参是UTF8 -->
22 <init-param>
23 <param-name>encoding</param-name>
24 <param-value>UTF-8</param-value>
25 </init-param>
26 </filter>
27 <filter-mapping>
28 <filter-name>encoding</filter-name>
29 <url-pattern>/*</url-pattern>
30 </filter-mapping>
31
32 <listener>
33 <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
34 </listener>
35
36 <!-- 配置SpringMvc 前端控制器 -->
37 <servlet>
38 <servlet-name>springmvc</servlet-name>
39 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
40 <!--指定SpringMvc 配置文件-->
41 <!-- springmvc的配置文件默认路径是 /WEB-INF/${servlet-name}_servlet.xml -->
42 <init-param>
43 <param-name>contextConfigLocation</param-name>
44 <param-value>classpath:spring/springmvc.xml</param-value>
45 </init-param>
46 </servlet>
47 <servlet-mapping>
48 <servlet-name>springmvc</servlet-name>
49 <url-pattern>*.action</url-pattern>
50 </servlet-mapping>
51
52 </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：
1 <?xml version="1.0" encoding="UTF-8" ?> 2 <!DOCTYPE configuration 3 PUBLIC "-//mybatis.org//DTD Config 3.0//EN" 4 "http://mybatis.org/dtd/mybatis-3-config.dtd"> 5 <configuration> 6 <plugins> 7 <!-- com.github.pagehelper为PageHelper类所在包名 --> 8 <plugin interceptor="com.github.pagehelper.PageHelper"> 9 <!-- 设置数据库类型 Oracle,Mysql,MariaDB,SQLite,Hsqldb,PostgreSQL六种数据库--> 10 <property name="dialect" value="mysql"/> 11 </plugin> 12 </plugins> 13 14 </configuration>
（五）springMVC的配置
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns:context="http://www.springframework.org/schema/context" 5 xmlns:mvc="http://www.springframework.org/schema/mvc" 6 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd 7 http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd 8 http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd"> 9 10 <!--配置controller扫描--> 11 <context:component-scan base-package="com.cenobitor.controller"/> 12 13 <!-- 注解驱动 --> 14 <mvc:annotation-driven/> 15 16 <!--<!–自定义转换器配置模板–> 17 <!–使用自定义转换器–> 18 <mvc:annotation-driven conversion-service="myConverter" /> 19 20 <!– 定义转换器 –> 21 <bean id="myConverter" class="org.springframework.format.support.FormattingConversionServiceFactoryBean"> 22 <property name="converters"> 23 <set> 24 <!– 日期转换器 –> 25 <bean class="com.cenobitor.converter.DateConverter" /> 26 </set> 27 </property> 28 </bean>--> 29 30 <!-- 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 --> 31 <!-- 注意：这里的id只能是multipartResolver --> 32 <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> 33 <!-- 限定文件最大上传大小为：8MB --> 34 <property name="maxUploadSize" value="8388608" /> 35 </bean> 36 37 <!--可减少简写路径名--> 38 <!--<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 39 <!– 配置逻辑视图的前缀 –> 40 <property name="prefix" value="/WEB-INF/views/"/> 41 <property name="suffix" value=".jsp"/> 42 </bean>--> 43 </beans>
（六）log4j配置文件，位于resources包下：
1 log4j.rootLogger=DEBUG, Console 2 #Console 3 log4j.appender.Console=org.apache.log4j.ConsoleAppender 4 log4j.appender.Console.layout=org.apache.log4j.PatternLayout 5 log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n 6 log4j.logger.java.sql.ResultSet=INFO 7 log4j.logger.org.apache=INFO 8 log4j.logger.java.sql.Connection=DEBUG 9 log4j.logger.java.sql.Statement=DEBUG 10 log4j.logger.java.sql.PreparedStatement=DEBUG
三、 图片上传预览
1、创建表以及pojo
1 CREATE TABLE `pic` ( 2 `id` int(11) NOT NULL AUTO_INCREMENT, 3 `name` varchar(255) DEFAULT NULL, 4 `url` varchar(255) DEFAULT NULL, 5 PRIMARY KEY (`id`) 6 ) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=utf8
1 package com.cenobitor.pojo;
2
3 import lombok.Data;
4
5 /**
6 * @Description:
7 * @Date: Created in 11:05 AM 2018/5/1
8 * @Author: Cenobitor
9 * @Modified By:
10 */
11 @Data
12 public class Pic {
13
14 private Integer id;
15 private String name;
16 private String url;
17
18 public Pic(String name, String url) {
19 this.name = name;
20 this.url = url;
21 }
22
23 public Pic() {
24 }
25 }
2、设置文件存储的虚拟路径
2、创建上传页面
1 <!DOCTYPE html> 2 <html lang="en"> 3 <head> 4 <meta charset="UTF-8"> 5 <title>上传图片</title> 6 </head> 7 <body> 8 <form id="upload" action="/uploadpic.action" method="post" enctype="multipart/form-data"> 9 <input type="file" name="picFile"/> 10 <br/> 11 <input type="submit" value="提交"/> 12 </form> 13 </body> 14 </html>
3、创建Controller类
1 package com.cenobitor.controller;
2
3 import com.cenobitor.service.UploadFileService;
4 import org.springframework.beans.factory.annotation.Autowired;
5 import org.springframework.stereotype.Controller;
6 import org.springframework.web.bind.annotation.*;
7 import org.springframework.web.multipart.MultipartFile;
8
9 @Controller
10 public class UploadFileController {
11
12 @Autowired
13 private UploadFileService uploadFileService;
14
15 //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
16 @RequestMapping("/uploadpic")
17 public String uploadPic(MultipartFile picFile) throws Exception {
18 String picUrl = uploadFileService.UploadPic(picFile);
19 if (picUrl == null){
20 return "redirect:error.html";
21 }
22 //重定向预览图片
23 return "redirect:"+picUrl;
24 }
25 }
4、创建service层
1 public interface UploadFileService {
2 public String UploadPic(MultipartFile picFile);
3 }
1 package com.cenobitor.service.impl;
2
3 import com.cenobitor.mapper.PicMapper;
4 import com.cenobitor.pojo.Pic;
5 import com.cenobitor.service.UploadFileService;
6 import org.springframework.beans.factory.annotation.Autowired;
7 import org.springframework.stereotype.Service;
8 import org.springframework.transaction.annotation.Transactional;
9 import org.springframework.web.multipart.MultipartFile;
10 import java.io.File;
11 import java.io.IOException;
12 import java.util.UUID;
13
14 @Service
15 @Transactional
16 public class UploadFileServiceImpl implements UploadFileService {
17
18 @Autowired
19 private PicMapper picMapper;
20
21 @Override
22 public String UploadPic(MultipartFile picFile) {
23 try {
24 // 图片新名字
25 String name = UUID.randomUUID().toString();
26 // 图片原名字
27 String oldName = picFile.getOriginalFilename();
28 // 后缀名
29 String exeName = oldName.substring(oldName.lastIndexOf("."));
30 //保存图片路径为绝对路径
31 File pic = new File("/Users/Shared/jpg/" + name + exeName);
32 // 保存图片到本地磁盘
33 picFile.transferTo(pic);
34
35 //保存数据到数据库中
36 picMapper.add(new Pic(name,"../jpg/"+name+exeName));
37 return "/jpg/"+name+exeName;
38
39 } catch (IOException e) {
40 e.printStackTrace();
41 return null;
42 }
43 }
44 }
5、创建dao层（mapper层）
1 package com.cenobitor.mapper;
2
3 import com.cenobitor.pojo.Pic;
4
5 public interface PicMapper {
6 //添加图片
7 int add(Pic pic);
8
9 }
1 <?xml version="1.0" encoding="UTF-8" ?>
2 <!DOCTYPE mapper
3 PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
4 "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
5 <!--namespace为对应的mapper类的全路径名-->
6 <mapper namespace="com.cenobitor.mapper.PicMapper">
7
8 <!-- 添加 -->
9 <!-- id为对应的方法名, parameterType为入参的全路径名-->
10 <insert id="add" parameterType = "com.cenobitor.pojo.Pic">
11 insert into
12 pic(name,url)
13 values
14 (#{name},#{url});
15 </insert>
16
17 </mapper>
6、项目的目录结构
7、效果