学习了一阵子的SSM框架，一直在各种博客，简书，慕课网学习，最后终于自己撸出来一个简单的个人相册。
项目的演示效果：
开发的工具及环境： IntelliJ IDEA: 2016 Maven :3.0x Hbuilder(前端部分，可以用记事本代替2333) Java 8
项目流程（dao->service->web）： 1.添加所有依赖：
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<!--补全项目依赖-->
<!--1.日志 java日志有:slf4j,log4j,logback,common-logging
slf4j:是规范/接口
日志实现:log4j,logback,common-logging
使用:slf4j+logback
-->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.12</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
<version>1.1.1</version>
</dependency>
<!--实现slf4j接口并整合-->
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.1.1</version>
</dependency>
<!--1.数据库相关依赖-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.35</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.1</version>
</dependency>
<!--2.dao框架:MyBatis依赖-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.3.0</version>
</dependency>
<!--mybatis自身实现的spring整合依赖-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.3</version>
</dependency>
<!--3.Servlet web相关依赖-->
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.5.4</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
<!--4:spring依赖-->
<!--1)spring核心依赖-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<!--2)spring dao层依赖-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<!--3)springweb相关依赖-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<!--4)spring test相关依赖-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<!--添加redis依赖-->
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.7.3</version>
</dependency>
<!--prostuff序列化依赖-->
<dependency>
<groupId>com.dyuproject.protostuff</groupId>
<artifactId>protostuff-core</artifactId>
<version>1.0.8</version>
</dependency>
<dependency>
<groupId>com.dyuproject.protostuff</groupId>
<artifactId>protostuff-runtime</artifactId>
<version>1.0.8</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>2.添加Mybatis的配置文件：
<?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>
<!--配置全局属性-->
<settings>
<!--使用jdbc的getGeneratekeys获取自增主键值-->
<setting name="useGeneratedKeys" value="true"/>
<!--使用列别名替换列名 默认值为true
select name as title(实体中的属性名是title) form table;
开启后mybatis会自动帮我们把表中name的值赋到对应实体的title属性中
-->
<setting name="useColumnLabel" value="true"/>
<!--开启驼峰命名转换Table:create_time到 Entity(createTime)-->
<setting name="mapUnderscoreToCamelCase" value="true"/>
</settings>
</configuration>这里最好去官网看最新配置文件的头配置http://www.mybatis.org/mybatis-3/zh/index.html
然后编写dao层的代码： 相册实体类
public interface PictureDao {
/**
* @return 返回所有图片
*/
List<Picture> getAllPictures();
/**上传图片，并且将图片名，图片描述信息插入数据库
* @param picName
* @param content
* @return插入成功返回1，失败0
*/
int InsertPicture(@Param("picName") String picName, @Param("content") String content);
}用户实体类
public interface UserDao {
/**如果查询到该用户就会返回1
* @param username,pwd
* @return数据库被修改的行数
*/
User getUserByName(@Param("username") String username, @Param("pwd") String pwd);
}实体类创建好，我们就在resource文件夹下创建一个mapper文件夹，放我们dao层的映射文件。 UserDao.xml
<?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">
<mapper namespace="com.koali.dao.UserDao">
<select id="getUserByName" resultType="com.koali.entity.User" >
SELECT * FROM USER WHERE username=#{username} AND pwd=#{pwd}
</select>
</mapper>PictureDao.xml
<?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">
<mapper namespace="com.koali.dao.PictureDao">
<select id="getAllPictures" resultType="com.koali.entity.Picture">
SELECT * FROM PICTURE
</select>
<insert id="InsertPicture">
INSERT INTO `picture` (`picname`,`content`) VALUES (#{picName},#{content})
</insert>
</mapper>
</mapper>最后整合到Spring里面。所以我再次在resource文件夹下创建一个spring文件夹，并且创建一个文件名为： spring-dao.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"
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">
<!--配置整合mybatis过程
1.配置数据库相关参数-->
<context:property-placeholder location="classpath:jdbc.properties"/>
<!--2.数据库连接池-->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<!--配置连接池属性-->
<property name="driverClass" value="${jdbc.driver}"/>
<!-- 基本属性 url、user、password -->
<property name="jdbcUrl" value="${jdbc.url}"/>
<property name="user" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<!--c3p0私有属性-->
<property name="maxPoolSize" value="30"/>
<property name="minPoolSize" value="10"/>
<!--关闭连接后不自动commit-->
<property name="autoCommitOnClose" value="false"/>
<!--获取连接超时时间-->
<property name="checkoutTimeout" value="1000"/>
<!--当获取连接失败重试次数-->
<property name="acquireRetryAttempts" value="2"/>
</bean>
<!--约定大于配置-->
<!--３.配置SqlSessionFactory对象-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!--往下才是mybatis和spring真正整合的配置-->
<!--注入数据库连接池-->
<property name="dataSource" ref="dataSource"/>
<!--配置mybatis全局配置文件:mybatis-config.xml-->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
<!--扫描entity包,使用别名,多个用;隔开-->
<property name="typeAliasesPackage" value="com.elric.entity"/>
<!--扫描sql配置文件:mapper需要的xml文件-->
<property name="mapperLocations" value="classpath:mapper/*.xml"/>
</bean>
<!--４:配置扫描Dao接口包,动态实现DAO接口,注入到spring容器-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--注入SqlSessionFactory-->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!-- 给出需要扫描的Dao接口-->
<property name="basePackage" value="com.koali.dao"/>
</bean>
</beans>因为spring-dao.xml里面有些属性要连接到我们的数据库，所以我们把我们的数据库的连接驱动，用户名什么鬼都写在一个叫 jdbc.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/picture?useUnicode=true&characterEncoding=utf-8
jdbc.username=Elric
jdbc.password=881010dao层编写结束（表示写blog比敲代码还累23333）！
3.编写Service层 因为这是个小Demo（博主刚学不久，还是一只小菜鸡）。所以Service的实现大抵跟dao差不多。 先写两个Service接口： UserService
public interface UserService {
/**本次中我们只需要对用户身份做出判断然后给予url
* @return 数据库查询到为1
*/
User CheckUser(String username, String pwd);
}PictureService
public interface PictureService {
/**查询所有照片
* @return 所有照片
*/
List<Picture> getAllPicture();
/**
* 这个服务就是PictureDao中的InsertP
* @param picName
* @param content
* @return 数据库成功返回1，失败返回0
*/
int InsertPicture(String picName, String content);
}然后再写两个实现Service接口的实现类： PictureServiceImpl
@Service
public class PictureServiceImpl implements PictureService {
@Autowired
private PictureDao pictureDao;
public List<Picture> getAllPicture() {
return pictureDao.getAllPictures();
}
public int InsertPicture(String picName, String content) {
return pictureDao.InsertPicture(picName,content);
}
}UserServiceImpl PictureServiceImpl
@Service
public class UserServiceImpl implements com.koali.service.UserService {
@Autowired
private UserDao userDao;
public User CheckUser(String username, String pwd) {
return userDao.getUserByName(username,pwd);
}
}然后写配置文件： 在resource中的spring文件夹下创建spring-service.xml spring-service.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:tx="http://www.springframework.org/schema/tx"
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.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
<!--扫描service包下所有使用注解的类型-->
<context:component-scan base-package="com.koali.service"/>
<!--配置事务管理器-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!--注入数据库连接池-->
<property name="dataSource" ref="dataSource"/>
</bean>
<!--配置基于注解的声明式事务
默认使用注解来管理事务行为-->
<tx:annotation-driven transaction-manager="transactionManager"/>到此Service层就写好了，这个比较简单。
3.web层的编写： 现在web.xml添加spring-mvc的前端控制器：
<servlet>
<servlet-name>seckill-dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/spring-*.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>seckill-dispatcher</servlet-name>
<!--默认匹配所有请求-->
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--去除乱码的过滤器-->
<filter>
<filter-name>characterEncodingFilter</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>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>characterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>然后在resourced的spring文件夹创建spring-web.xml spring-web.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.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!--指明controller所在包，并扫描其中的注解-->
<context:component-scan base-package="com.koali.web"/>
<!--静态资源（js,image等）的访问-->
<mvc:default-servlet-handler/>
<!--开启注解-->
<mvc:annotation-driven/>
<!--ViewResolver视图解析器-->
<!--用于支持Servlet，JSP视图解析-->
<bean id="jspViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
<!--200*1024*1024即200M resolveLazily属性启用是为了推迟文件解析，以便捕获文件的异常-->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize" value="209715200" />
<property name="resolveLazily" value="true" />
<property name="defaultEncoding" value="UTF-8"></property>
</bean>
<mvc:resources location="/WEB-INF/jsp/css/" mapping="/css/**" />
<mvc:resources location="/WEB-INF/jsp/fonts/" mapping="/fonts/**" />
<mvc:resources location="/WEB-INF/jsp/images/" mapping="/images/**" />
<mvc:resources location="/WEB-INF/jsp/js/" mapping="/js/**"/>
</beans>最后编写我们的前端控制器： MainController
@Controller
public class MainController {
@Autowired
private PictureService pictureService;
@Autowired
private UserService userService;
@RequestMapping(value = "/")
public String index(Model model){
List<Picture> pictures =pictureService.getAllPicture();
System.out.println(pictures.size());
model.addAttribute("pictures",pictures);
return "index";
}
@RequestMapping(value = "login")
public String login(){
return "login";
}
@RequestMapping(value = "checkandRedict")
public String checkAndRedict(@Param("username") String username,@Param("pwd") String pwd){
User user = userService.CheckUser(username,pwd);
System.out.println(user);
if (user!=null){
return "upload";
}else {
return "index";
}
}
@RequestMapping(value = "upload",method = RequestMethod.POST)
public String upload(@RequestParam("file") MultipartFile file,@Param("content") String content, HttpServletRequest request,Model model) throws IOException{
//获取项目的根路径，将上传图片的路径与我们的资源路径在一起，才能显示
HttpSession session= request.getSession();
String path = session.getServletContext().getRealPath("/");
System.out.println("getRealPath('/'):"+path);
int end = path.indexOf("t",19);
String prePath = path.substring(0,end);
String realPath = prePath+"target\\demo\\WEB-INF\\jsp\\images";
System.out.println("DEBUG:"+realPath);
String picName = new Date().getTime()+".jpg";
if (!file.isEmpty()){
FileUtils.copyInputStreamToFile(file.getInputStream(),new File(realPath,new Date().getTime()+".jpg"));
}else if(content==null){
content = "";//如果输入为null数据库不允许插入
}
//图片类的名字保存为路径+名字方便后期前端提取
//将图片名字用时间戳保存，反正上传图片为中文乱码等问题
int code = pictureService.InsertPicture("images/"+picName,content);
if (code==1) {
List<Picture> pictures = pictureService.getAllPicture();
model.addAttribute("pictures", pictures);
return "index";
}else
return "index";
}
}至此项目就到此为止！
期间遇到好多好多坑，比如mybatis无端端就连不上，或者莫名其妙扫描不到我的Spring配置文件，可是我在我IDEA明明ctrl点击找的到，反正很多很多，有些解决了，有些还是不懂，不过以后慢慢接触应该就会越来越熟悉！ 后面的计划应该会给项目加Shiro用户提权，虽然我的也是要登陆才能上传图片，所以我不太清楚Shiro对我好像用处不大，不过还是学一学，加进去。然后再学点高并发并且加进去，虽然如果我搭建了我这个项目到我的服务器，也不可能有很多人同时访问这个网站，但是高并发这种东西还是要学学的。 最后献上我的项目的地址:https://github.com/Elricyo/SSM