一、思路：
(一) Dao层与Service层：
applicationContext.xml。
a) 数据库连接池
b) 整合jpa
c) 配置@service文件扫描器。
d) 配置事务管理管理器，开启事务注解
e) 配置jpa扫描器
(二)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。
(三)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>ssh_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 <junit.version>4.12</junit.version> 24 <spring.version>4.3.10.RELEASE</spring.version> 25 <servlet-api.version>2.5</servlet-api.version> 26 <springdatajpa.version>1.10.4.RELEASE</springdatajpa.version> 27 <hibernate.version>5.0.7.Final</hibernate.version> 28 <javassist.version>3.11.0.GA</javassist.version> 29 <mysql.version>5.1.32</mysql.version> 30 <druid.version>1.0.9</druid.version> 31 <commons-fileupload.version>1.3.1</commons-fileupload.version> 32 <commons-lang3.version>3.3.2</commons-lang3.version> 33 <commons-io.version>1.3.2</commons-io.version> 34 <jackson.version>2.8.9</jackson.version> 35 <jstl.version>1.2</jstl.version> 36 <jsp-api.version>2.0</jsp-api.version> 37 <fastjson.version>1.2.28</fastjson.version> 38 <slf4j.version>1.6.4</slf4j.version> 39 <lombok.version>1.16.20</lombok.version> 40 </properties> 41 42 <dependencies> 43 <!-- Apache工具组件 --> 44 <dependency> 45 <groupId>org.apache.commons</groupId> 46 <artifactId>commons-lang3</artifactId> 47 <version>${commons-lang3.version}</version> 48 </dependency> 49 <dependency> 50 <groupId>org.apache.commons</groupId> 51 <artifactId>commons-io</artifactId> 52 <version>${commons-io.version}</version> 53 </dependency> 54 <!-- Jackson Json处理工具包 --> 55 <dependency> 56 <groupId>com.fasterxml.jackson.core</groupId> 57 <artifactId>jackson-databind</artifactId> 58 <version>${jackson.version}</version> 59 </dependency> 60 61 <!--alibaba json处理工具包--> 62 <dependency> 63 <groupId>com.alibaba</groupId> 64 <artifactId>fastjson</artifactId> 65 <version>${fastjson.version}</version> 66 </dependency> 67 <!-- 日志处理 --> 68 <dependency> 69 <groupId>org.slf4j</groupId> 70 <artifactId>slf4j-log4j12</artifactId> 71 <version>${slf4j.version}</version> 72 </dependency> 73 <!--实体类get/set注解--> 74 <dependency> 75 <groupId>org.projectlombok</groupId> 76 <artifactId>lombok</artifactId> 77 <version>${lombok.version}</version> 78 <scope>provided</scope> 79 </dependency> 80 <!--单元测试--> 81 <dependency> 82 <groupId>junit</groupId> 83 <artifactId>junit</artifactId> 84 <version>${junit.version}</version> 85 </dependency> 86 87 <!-- Spring --> 88 <dependency> 89 <groupId>org.springframework</groupId> 90 <artifactId>spring-context</artifactId> 91 <version>${spring.version}</version> 92 </dependency> 93 <dependency> 94 <groupId>org.springframework</groupId> 95 <artifactId>spring-beans</artifactId> 96 <version>${spring.version}</version> 97 </dependency> 98 <dependency> 99 <groupId>org.springframework</groupId> 100 <artifactId>spring-webmvc</artifactId> 101 <version>${spring.version}</version> 102 </dependency> 103 <dependency> 104 <groupId>org.springframework</groupId> 105 <artifactId>spring-jdbc</artifactId> 106 <version>${spring.version}</version> 107 </dependency> 108 <dependency> 109 <groupId>org.springframework</groupId> 110 <artifactId>spring-aspects</artifactId> 111 <version>${spring.version}</version> 112 </dependency> 113 <dependency> 114 <groupId>org.springframework</groupId> 115 <artifactId>spring-jms</artifactId> 116 <version>${spring.version}</version> 117 </dependency> 118 <dependency> 119 <groupId>org.springframework</groupId> 120 <artifactId>spring-context-support</artifactId> 121 <version>${spring.version}</version> 122 </dependency> 123 <dependency> 124 <groupId>org.springframework</groupId> 125 <artifactId>spring-test</artifactId> 126 <version>${spring.version}</version> 127 </dependency> 128 <!--jsp相关--> 129 <dependency> 130 <groupId>javax.servlet</groupId> 131 <artifactId>servlet-api</artifactId> 132 <version>${servlet-api.version}</version> 133 <scope>provided</scope> 134 </dependency> 135 <!-- 文件上传组件 --> 136 <dependency> 137 <groupId>commons-fileupload</groupId> 138 <artifactId>commons-fileupload</artifactId> 139 <version>${commons-fileupload.version}</version> 140 </dependency> 141 142 <!-- spring data jpa 数据库持久层 --> 143 <dependency> 144 <groupId>org.springframework.data</groupId> 145 <artifactId>spring-data-jpa</artifactId> 146 <version>${springdatajpa.version}</version> 147 </dependency> 148 149 <!-- hibernate 框架 --> 150 <dependency> 151 <groupId>org.hibernate</groupId> 152 <artifactId>hibernate-core</artifactId> 153 <version>${hibernate.version}</version> 154 </dependency> 155 <dependency> 156 <groupId>org.hibernate</groupId> 157 <artifactId>hibernate-entitymanager</artifactId> 158 <version>${hibernate.version}</version> 159 </dependency> 160 161 <!-- MySql --> 162 <dependency> 163 <groupId>mysql</groupId> 164 <artifactId>mysql-connector-java</artifactId> 165 <version>${mysql.version}</version> 166 </dependency> 167 <!-- 连接池 --> 168 <dependency> 169 <groupId>com.alibaba</groupId> 170 <artifactId>druid</artifactId> 171 <version>${druid.version}</version> 172 </dependency> 173 174 </dependencies> 175 176 <build> 177 <finalName>ssh_template</finalName> 178 179 <plugins> 180 <!-- 配置Tomcat7插件 --> 181 <plugin> 182 <groupId>org.apache.tomcat.maven</groupId> 183 <artifactId>tomcat7-maven-plugin</artifactId> 184 <version>2.2</version> 185 <configuration> 186 <uriEncoding>UTF-8</uriEncoding> 187 </configuration> 188 </plugin> 189 <!-- 配置打包时跳过测试 --> 190 <plugin> 191 <groupId>org.apache.maven.plugins</groupId> 192 <artifactId>maven-surefire-plugin</artifactId> 193 <version>2.12.4</version> 194 </plugin> 195 </plugins> 196 </build> 197 198 </project>
（二）applicationContext.xml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:tx="http://www.springframework.org/schema/tx" 5 6 xmlns:context="http://www.springframework.org/schema/context" 7 xmlns:jpa="http://www.springframework.org/schema/data/jpa" 8 9 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd 10 http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd 11 http://www.springframework.org/schema/context 12 http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd"> 13 14 <!--指定连接池配置--> 15 <!-- dao层 数据库连接部分--> 16 <!-- 加载配置文件 --> 17 <context:property-placeholder location="classpath:properties/db.properties"/> 18 19 <!-- 配置service扫描 --> 20 <context:component-scan base-package="com.cenobitor.service"/> 21 22 <!-- 数据库连接池 --> 23 <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close"> 24 <property name="driverClassName" value="${jdbc.driver}"/> 25 <property name="url" value="${jdbc.url}"/> 26 <property name="username" value="${jdbc.username}"/> 27 <property name="password" value="${jdbc.password}"/> 28 <!-- 连接池的最大数据库连接数 --> 29 <property name="maxActive" value="10"/> 30 <!-- 最大空闲数 --> 31 <property name="maxIdle" value="5"/> 32 </bean> 33 <!-- spring整合JPA --> 34 <bean id="entityManagerFactory" 35 class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"> 36 <property name="dataSource" ref="dataSource" /> 37 <!--指定JPA扫描的实体类所在的包--> 38 <property name="packagesToScan" value="com.cenobitor.pojo" /> 39 <!-- 指定持久层提供者为Hibernate --> 40 <property name="persistenceProvider"> 41 <bean class="org.hibernate.ejb.HibernatePersistence" /> 42 </property> 43 <property name="jpaVendorAdapter"> 44 <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"> 45 <!-- 自动建表 --> 46 <property name="generateDdl" value="true" /> 47 <property name="database" value="MYSQL" /> 48 <property name="databasePlatform" value="org.hibernate.dialect.MySQL5Dialect" /> 49 <property name="showSql" value="true" /> 50 </bean> 51 </property> 52 <property name="jpaDialect"> 53 <bean class="org.springframework.orm.jpa.vendor.HibernateJpaDialect" /> 54 </property> 55 </bean> 56 57 <!-- 配置事务管理器 --> 58 <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"> 59 <property name="entityManagerFactory" ref="entityManagerFactory" /> 60 </bean> 61 62 <!-- 开启事务注解 --> 63 <tx:annotation-driven transaction-manager="transactionManager" /> 64 <!--指定Spring Data JPA要进行扫描的包,该包中的类框架会自动为其创建代理--> 65 <jpa:repositories base-package="com.cenobitor.dao" /> 66 67 </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=
（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 <listener> 18 <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> 19 </listener> 20 21 <!-- 解决post乱码问题 --> 22 <filter> 23 <filter-name>encoding</filter-name> 24 <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> 25 <!-- 设置编码参是UTF8 --> 26 <init-param> 27 <param-name>encoding</param-name> 28 <param-value>UTF-8</param-value> 29 </init-param> 30 </filter> 31 <filter-mapping> 32 <filter-name>encoding</filter-name> 33 <url-pattern>/*</url-pattern> 34 </filter-mapping> 35 36 37 38 <!-- 配置SpringMvc 前端控制器 --> 39 <servlet> 40 <servlet-name>springmvc</servlet-name> 41 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 42 <!--指定SpringMvc 配置文件--> 43 <!-- springmvc的配置文件默认路径是 /WEB-INF/${servlet-name}_servlet.xml --> 44 <init-param> 45 <param-name>contextConfigLocation</param-name> 46 <param-value>classpath:spring/springmvc.xml</param-value> 47 </init-param> 48 </servlet> 49 <servlet-mapping> 50 <servlet-name>springmvc</servlet-name> 51 <url-pattern>*.action</url-pattern> 52 </servlet-mapping> 53 54 </web-app>
（四）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 --> 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>
（五）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pojo，自动建表
1 package com.cenobitor.pojo; 2 3 import lombok.Data; 4 import javax.persistence.*; 5 6 /** 7 * @Description: 8 * @Date: Created in 11:05 AM 2018/5/1 9 * @Author: Cenobitor 10 * @Modified By: 11 */ 12 @Data 13 @Entity 14 @Table(name = "t_pic") 15 public class Pic { 16 17 @Id 18 @GeneratedValue 19 @Column(name = "t_id") 20 private Integer id; 21 @Column(name = "t_name") 22 private String name; 23 @Column(name = "t_url") 24 private String url; 25 26 public Pic(String name, String url) { 27 this.name = name; 28 this.url = url; 29 } 30 31 public Pic() { 32 } 33 }
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.dao.PicRepository; 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 19 @Autowired 20 private PicRepository repository; 21 22 @Override 23 public String UploadPic(MultipartFile picFile) { 24 try { 25 // 图片新名字 26 String name = UUID.randomUUID().toString(); 27 // 图片原名字 28 String oldName = picFile.getOriginalFilename(); 29 // 后缀名 30 String exeName = oldName.substring(oldName.lastIndexOf(".")); 31 //保存图片路径为绝对路径 32 File pic = new File("/Users/Shared/jpg/" + name + exeName); 33 // 保存图片到本地磁盘 34 picFile.transferTo(pic); 35 36 //保存数据到数据库中 37 repository.save(new Pic(name,"../jpg/"+name+exeName)); 38 return "/jpg/"+name+exeName; 39 40 } catch (IOException e) { 41 e.printStackTrace(); 42 return null; 43 } 44 } 45 }
5、创建dao层
1 package com.cenobitor.dao; 2 3 import com.cenobitor.pojo.Pic; 4 import org.springframework.data.jpa.repository.JpaRepository; 5 6 public interface PicRepository extends JpaRepository<Pic,Integer> { 7 8 }
6、项目的目录结构
