SSM(Spring+SpringMVC+Mybstis)搭建，写给新手

SSM框架——详细整合教程（Spring+SpringMVC+MyBatis）

作用：

SSM框架是spring MVC ，spring和mybatis框架的整合，是标准的MVC模式，将整个系统划分为表现层，controller层，service层，DAO层四层

使用spring MVC负责请求的转发和视图管理

spring实现业务对象管理，mybatis作为数据对象的持久化引擎

原理：

SpringMVC：

1.客户端发送请求到DispacherServlet（分发器）

2.由DispacherServlet控制器查询HanderMapping，找到处理请求的Controller

3.Controller调用业务逻辑处理后，返回ModelAndView

4.DispacherSerclet查询视图解析器，找到ModelAndView指定的视图

5.视图负责将结果显示到客户端

搭建：

项目结构如下

1、引用需要的jar包，在pom.xml中添加以下内容

	<properties>
		<!-- spring版本号 -->
		<spring.version>4.3.3.RELEASE</spring.version>
		<!-- <spring.version>4.0.2.RELEASE</spring.version> -->
		<!-- mybatis版本号 -->
		<mybatis.version>3.2.6</mybatis.version>
		<!-- log4j日志文件管理包版本 -->
		<slf4j.version>1.7.7</slf4j.version>
		<log4j.version>1.2.17</log4j.version>
	</properties>
	<dependencies>

		<dependency>
			<groupId>javax</groupId>
			<artifactId>javaee-api</artifactId>
			<version>7.0</version>
		</dependency>

		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.12</version>
			<!-- 表示开发的时候引入，发布的时候不会加载此包 -->
			<scope>test</scope>
		</dependency>
		<!-- spring核心包 -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-core</artifactId>
			<version>${spring.version}</version>
		</dependency>

		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-web</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-oxm</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-tx</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-webmvc</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-aop</artifactId>
			<version>${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>${spring.version}</version>
		</dependency>
		<!-- mybatis核心包 -->
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis</artifactId>
			<version>${mybatis.version}</version>
		</dependency>
		<!-- mybatis/spring包 -->
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis-spring</artifactId>
			<version>1.2.2</version>
		</dependency>
		<!-- 导入java ee jar 包 -->
		<dependency>
			<groupId>javax</groupId>
			<artifactId>javaee-api</artifactId>
			<version>7.0</version>
		</dependency>
		<!-- 导入Mysql数据库链接jar包 Start -->
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>5.1.30</version>
		</dependency>
		<!-- 导入dbcp的jar包，用来在applicationContext.xml中配置数据库 -->
		<dependency>
			<groupId>commons-dbcp</groupId>
			<artifactId>commons-dbcp</artifactId>
			<version>1.2.2</version>
		</dependency>
		<!--数据库包 End -->

		<!-- JSTL标签类 -->
		<dependency>
			<groupId>jstl</groupId>
			<artifactId>jstl</artifactId>
			<version>1.2</version>
		</dependency>

		<!-- 日志文件管理包 log Start -->
		<!-- log start -->
		<dependency>
			<groupId>log4j</groupId>
			<artifactId>log4j</artifactId>
			<version>${log4j.version}</version>
		</dependency>
		<!-- 格式化对象，方便输出日志 -->
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>fastjson</artifactId>
			<version>1.1.41</version>
		</dependency>
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-api</artifactId>
			<version>${slf4j.version}</version>
		</dependency>
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-log4j12</artifactId>
			<version>${slf4j.version}</version>
		</dependency>
		<!-- log End -->

		<!-- 映入JSON Start -->
		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-core</artifactId>
			<version>2.7.5</version>
		</dependency>
		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-annotations</artifactId>
			<version>2.7.5</version>
		</dependency>
		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-databind</artifactId>
			<version>2.7.5</version>
		</dependency>

		<dependency>
			<groupId>org.codehaus.jackson</groupId>
			<artifactId>jackson-mapper-asl</artifactId>
			<version>1.9.4</version>
		</dependency>

		<dependency>
			<groupId>org.codehaus.jackson</groupId>
			<artifactId>jackson-core-asl</artifactId>
			<version>1.9.4</version>
		</dependency>
		<!-- json END -->

		<!-- 上传组件包 Start -->
		<dependency>
			<groupId>commons-fileupload</groupId>
			<artifactId>commons-fileupload</artifactId>
			<version>1.3.1</version>
		</dependency>
		<dependency>
			<groupId>commons-io</groupId>
			<artifactId>commons-io</artifactId>
			<version>2.4</version>
		</dependency>
		<dependency>
			<groupId>commons-codec</groupId>
			<artifactId>commons-codec</artifactId>
			<version>1.9</version>
		</dependency>
		<dependency>
			<groupId>commons-httpclient</groupId>
			<artifactId>commons-httpclient</artifactId>
			<version>3.0</version>
		</dependency>
		<dependency>
			<groupId>commons-logging</groupId>
			<artifactId>commons-logging</artifactId>
			<version>1.1.1</version>
		</dependency>
		<!-- 上传组件包 End -->

		<!--mybatis分页插件 -->

		<dependency>
			<groupId>com.github.pagehelper</groupId>
			<artifactId>pagehelper</artifactId>
			<version>4.0.0</version>
		</dependency>
		<!-- Start:excel批量导入 -->
		<dependency>
			<groupId>org.apache.poi</groupId>
			<artifactId>poi</artifactId>
			<version>3.15</version>
		</dependency>

		<dependency>
			<groupId>org.apache.poi</groupId>
			<artifactId>poi-ooxml</artifactId>
			<version>3.15</version>
		</dependency>
		<!-- End:excel批量导入 -->
	</dependencies>

2、整合SpringMVC，配置spring-mvc.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:p="http://www.springframework.org/schema/p"
    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-3.1.xsd
                        http://www.springframework.org/schema/context
                        http://www.springframework.org/schema/context/spring-context-3.1.xsd
                        http://www.springframework.org/schema/mvc
                        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
    <!-- 告诉spring注册几个默认的bean，用来处理@requestmapping及处理请求的适配器-->
    <mvc:annotation-driven/>
    <!-- 自动扫描该包，使SpringMVC认为包下用了@controller注解的类是控制器 (注册@Component，@Controller，@Service，@Repository等注解标记的组件)-->
    <context:component-scan base-package="com.mojxtang.controller" />
    <!--避免IE执行AJAX时，返回JSON出现下载文件 -->
    <bean id="mappingJacksonHttpMessageConverter"
        class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
        <property name="supportedMediaTypes">
            <list>
                <value>text/html;charset=UTF-8</value>
            </list>
        </property>
    </bean>
    <!-- 启动SpringMVC的注解功能，完成请求和注解POJO的映射 -->
    <bean
        class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
        <property name="messageConverters">
            <list>
                <ref bean="mappingJacksonHttpMessageConverter" /> <!-- JSON转换器 -->
            </list>
        </property>
    </bean>
    <!-- 定义跳转的文件的前后缀 ，视图模式配置-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!-- 这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀，变成一个 可用的url地址 -->
        <property name="prefix" value="/" />  <!-- /WEB-INF/jsp/ -->
        <property name="suffix" value=".html" />
    </bean>  

    <!-- 配置文件上传，如果没有使用文件上传可以不用配置，当然如果不配，那么配置文件中也不必引入上传组件包 -->
    <bean id="multipartResolver"
        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <!-- 默认编码 -->
        <property name="defaultEncoding" value="utf-8" />
        <!-- 文件大小最大值 -->
        <property name="maxUploadSize" value="10485760000" />
        <!-- 内存中的最大值 -->
        <property name="maxInMemorySize" value="40960" />
    </bean>   

</beans>

3、配置web.xml

<?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_3_0.xsd"
    version="3.0">
  <display-name>Archetype Created Web Application</display-name>

  <!-- 配置编码过滤器Start -->
    <filter>
        <!-- url-pattern的值可以是/也可以是/* -->
        <filter-name>encodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <async-supported>true</async-supported>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <!-- 配置编码过滤器End -->

    <!-- 如果同一个bean被定义两次，后面一个优先 -->
    <!-- classpath*与classpath的区别:前者遍历所有的classpath加载所有符合条件的资源(效率较差)，后者只会去找第一个符合条件的资源(避免重名) -->
    <context-param>
        <description></description>
        <param-name>contextConfigLocation</param-name>
        <!-- <param-value>classpath*:spring-*.xml</param-value> -->
        <param-value>
            classpath:spring-mybatis.xml
        </param-value>
    </context-param>

    <!-- 此监听器主要用于解决java.beans.Introspector导致的内存泄漏的问题,回收JavaBean中的缓存垃圾，防止内存变大。默认可以不配 -->
    <!-- 此监听器应该配置在web.xml中与Spring相关监听器中的第一个位置(也要在ContextLoaderListener的前面)-->
    <listener>
        <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
    </listener>
    <!-- 启动spring容器用，容器用于管理Bean-->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <!-- DispatcherServlet 针对MVC上下文加载，即拦截请求，分发请求给Controller -->
    <!-- load-on-startup 标记容器是否在启动的时候就加载这个servlet, >=0时启动,其他情况被选择才启动，相当于懒加载和饿汉模式 -->
    <servlet>
        <servlet-name>SpringMVC</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>
        <async-supported>true</async-supported>
    </servlet>

    <servlet-mapping>
        <servlet-name>SpringMVC</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!-- 解决样式资源丢失问题 -->
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.jpg</url-pattern>
        <url-pattern>*.js</url-pattern>
        <url-pattern>*.css</url-pattern>
        <url-pattern>*.png</url-pattern>
        <url-pattern>*.gif</url-pattern>
        <url-pattern>*.json</url-pattern>
        <url-pattern>*.html</url-pattern>
        <url-pattern>*.htm</url-pattern>
        <url-pattern>*.swf</url-pattern>
        <url-pattern>*.eot</url-pattern>
        <url-pattern>*.svg</url-pattern>
        <url-pattern>*.ttf</url-pattern>
        <url-pattern>*.woff</url-pattern>
        <url-pattern>*.woff2</url-pattern>
        <url-pattern>*.jpeg</url-pattern><!-- 页面不显示图片，格式不允许 -->
    </servlet-mapping>

    <listener>
    <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
    </listener>
</web-app>

4、配置mybatis-config.xml

<?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>
	<!-- 引入db.properties文件 <properties resource="db.properties"> <property name="driver"
		value="oracle.jdbc.driver.OracleDriver"/> </properties> -->
	<!-- 开启延迟加载 -->
	<settings>
		<setting name="lazyLoadingEnabled" value="true" />
		<setting name="aggressiveLazyLoading" value="false" />
	</settings>
	<plugins>
		<plugin interceptor="com.github.pagehelper.PageHelper">
			<property name="dialect" value="mysql" />
			<property name="offsetAsPageNum" value="true" />
			<property name="rowBoundsWithCount" value="true" />
			<property name="pageSizeZero" value="true" />
			<property name="reasonable" value="false" />
			<property name="params" value="pageNum=start;pageSize=limit;" />
			<property name="returnPageInfo" value="check" />
		</plugin>
	</plugins>
</configuration>

5、配置spring-mybatis.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:p="http://www.springframework.org/schema/p"
    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-3.1.xsd
                        http://www.springframework.org/schema/context
                        http://www.springframework.org/schema/context/spring-context-3.1.xsd
                        http://www.springframework.org/schema/mvc
                        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
    <!-- 自动扫描 com.znkj.dao,com.znkj.service-->
    <context:component-scan base-package="com.mojxtang"/>   

    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
        destroy-method="close">
        <property name="driverClassName" value="com.mysql.jdbc.Driver" />
        <property name="url" value="jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=UTF-8"/>
        <property name="username" value="root"/>
        <property name="password" value="123123"/>
    </bean> 

    <!-- spring和MyBatis完美整合，不需要mybatis的配置映射文件 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <!-- 加载 mybatis-config.xml文件-->
     <property name="configLocation" value="classpath:mybatis-config.xml"></property>
        <!-- 自动扫描*.xml文件 -->
        <property name="mapperLocations" value="classpath:com/mojxtang/mapper/*.xml"></property>
    </bean>  

    <!-- DAO接口所在包名，Spring会自动查找其下的类 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.mojxtang.dao" />
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
    </bean>  

    <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->
    <bean id="transactionManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>  

</beans>

6、配置log4j.properties

log4j.rootLogger=DEBUG, stdout, logfile,ERROR
#配置根Logger：设定日志记录的最低级别，
log4j.category.org.springframework=ERROR
log4j.category.org.apache=INFO
log4j.logger.org.hibernate=ERROR 

#输出到控制台
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Threshold=ERROR
#：指定日志信息的最低输出级别，默认为DEBUG。
log4j.appender.stdout.ImmediateFlush=true
#表示所有消息都会被立即输出，设为false则不输出，默认值是true。
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
#可以灵活自定义布局模式
log4j.appender.stdout.Target=System.out
#默认值是System.out。
log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
#设定以怎样的格式显示消息

#文件大小到达指定尺寸的时候产生一个新的文件
log4j.appender.logfile=org.apache.log4j.RollingFileAppender
log4j.appender.logfile.File=${catalina.home}/webapps/error/log.log
#日志的输出文件所在目录
log4j.appender.logfile.Append=false：
#true表示消息增加到指定文件中，false则将消息覆盖指定的文件内容，默认值是true。
log4j.appender.logfile.Threshold=INFO
log4j.appender.logfile.MaxFileSize=2048KB
#后缀可以是KB, MB 或者GB。在日志文件到达该大小时，将会自动滚动，即将原来的内容移到logging.log4j.1文件中。
log4j.appender.logfile.MaxBackupIndex=2
#指定可以产生的滚动文件的最大数，例如，设为2则可以产生logging.log4j.1，logging.log4j.2两个滚动文件和一个logging.log4j文件。
log4j.appender.logfile.layout=org.apache.log4j.PatternLayout
log4j.appender.logfile.layout.ConversionPattern=%d %p [%c] - %m%n

#每天产生一个日志文件
log4j.appender.DAILY=org.apache.log4j.DailyRollingFileAppender
log4j.appender.DAILY.Threshold=INFO
log4j.appender.DAILY.File=${catalina.home}/webapps/error/log.log
log4j.appender.DAILY.Append=true
log4j.appender.DAILY.DatePattern='_'yyyy-MM-dd'.txt'
#每天滚动一次日志文件，即每天产生一个新的日志文件。当天的日志文件名为logging.log4j，前一个天的日志文件名为logging.log4j.yyyy-MM-dd。
log4j.appender.DAILY.layout=org.apache.log4j.PatternLayout
log4j.appender.RollingFile.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} %5p %c{1}:%L - %m%n

至此，大致的框架配置完成，增加自己需要的业务代码即可，或者如下配置

项目源码：SSM_Demo

数据库：db

博客地址：http://blog.mojxtang.com