SSM整合：spring + springmvc + mybatis
1.1 生成Maven项目：ar_ssm
1.2 添加jar包
<dependencies>
<!-- 单元测试 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<!-- 日志处理（mybatis默认的日志处理） -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.6.4</version>
</dependency>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.2.8.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>4.2.8.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.2.8.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.2.8.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>4.2.8.RELEASE</version>
</dependency>
<!-- Mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.2.8</version>
</dependency>
<!-- Mybatis spring 插件 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.2</version>
</dependency>
<!-- MySql -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.32</version>
</dependency>
<!-- 连接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.0.9</version>
</dependency>
<!-- JSP相关 -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jsp-api</artifactId>
<version>2.0</version>
<scope>provided</scope>
</dependency>
<!-- Jackson Json处理工具包 -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.4.2</version>
</dependency>
<!-- 文件处理 -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.2</version>
</dependency>
</dependencies>
1.3 创建log4j.properties
log4j.rootLogger=DEBUG,A1 log4j.logger.org.mybatis = DEBUG log4j.appender.A1=org.apache.log4j.ConsoleAppender log4j.appender.A1.layout=org.apache.log4j.PatternLayout log4j.appender.A1.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss,SSS} [%t] [%c]-[%p] %m%n
1.4 创建db.properties
jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/database_name jdbc.username=root jdbc.password=root
2.1 引入myBatis逆向工程：
2.2 创建mybatis配置文件：mybatis-config.xml
mybatis启动时会自动读取此配置文件，配置文件内容（除文件头）可以为空，但是配置文件必须存在，否则mybatis启动出错
<?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>
</configuration>
3.1 创建spring的配置文件：
applicationContext-dao.xml：
dao层的配置文件：
加载数据库配置文件和其他配置文件
数据库连接池
整合mybatis（sqlSessionFactory）
注入Dao对象（使用sqlSessionFactory和包路径生成mapper的Dao对象）
<!-- 加载数据库配置文件和其他配置文件 -->
<context:property-placeholder location="classpath:db.properties" />
<!-- 数据库连接池 -->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"
destroy-method="close">
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<property name="driverClassName" value="${jdbc.driver}" />
<!-- 最大连接数据库连接数,设 0 为没有限制 -->
<property name="maxActive" value="10" />
<!-- 最小连接池数量 -->
<property name="minIdle" value="5" />
</bean>
<!-- 整合mybatis：SqlsessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 数据源 -->
<property name="dataSource" ref="dataSource" />
<!-- mybatis配置文件 -->
<property name="configLocation" value="classpath:mybatis/mybatis-config.xml" />
</bean>
<!-- 注入DAO对象：配置mapper MapperFactoryBean：用于生成mapper代理对象 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 配置扫描包的路径 如果要扫描多个包，中间使用半角逗号分隔 -->
<property name="basePackage" value="com.roxy.arrescue.mapper" />
<!-- 使用sqlSessionFactoryBeanName -->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
</bean>
<!-- 加载数据库配置文件和其他配置文件 -->
<context:property-placeholder location="classpath:db.properties" />
<!-- 数据库连接池 -->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"
destroy-method="close">
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<property name="driverClassName" value="${jdbc.driver}" />
<!-- 最大连接数据库连接数,设 0 为没有限制 -->
<property name="maxActive" value="10" />
<!-- 最小连接池数量 -->
<property name="minIdle" value="5" />
</bean>
<!-- 整合mybatis：SqlsessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 数据源 -->
<property name="dataSource" ref="dataSource" />
<!-- mybatis配置文件 -->
<property name="configLocation" value="classpath:mybatis/mybatis-config.xml" />
</
applicationContext-service.xml：
service层的配置文件：
扫描service
配置事务管理
通知
切面
<!-- 扫描service -->
<context:component-scan base-package="com.roxy.arrescue.service" />
<!-- 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>
<!-- 传播行为 -->
<!-- REQUIRED：如果有事务，则在事务中执行；如果没有事务，则开启一个新的事物 -->
<tx:method name="save*" propagation="REQUIRED" />
<tx:method name="insert*" propagation="REQUIRED" />
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="create*" propagation="REQUIRED" />
<tx:method name="delete*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<!-- SUPPORTS：如果有事务，则在事务中执行；如果没有事务，则不会开启事物 -->
<tx:method name="find*" propagation="SUPPORTS" read-only="true" />
<tx:method name="select*" propagation="SUPPORTS" read-only="true" />
<tx:method name="get*" propagation="SUPPORTS" read-only="true" />
</tx:attributes>
</tx:advice>
<!-- 切面 -->
<aop:config>
<!-- 定义在service包或者子包里的任意方法的执行 -->
<aop:pointcut id="txPointCut"
expression="execution(* com.roxy.arrescue.service..*.*(..))" />
<aop:advisor advice-ref="txAdvice" pointcut-ref="txPointCut" />
</aop:config>
spring-mvc.xml：
扫描controller
注解驱动
视图解析器
静态资源解析
<!-- 扫描controller包下所有标注@Controller的组件 -->
<context:component-scan base-package="com.roxy.arrescue.controller" />
<!-- mvc注解驱动 -->
<mvc:annotation-driven />
<!-- 视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:prefix="/WEB-INF/jsp/" p:suffix=".jsp" />
<!-- 静态资源 解析 -->
<mvc:resources location="/script/" mapping="/script/**" />
<mvc:resources location="/css/" mapping="/css/**" />
<mvc:resources location="/images/" mapping="/images/**" />
4 web.xml的配置
加载spring的配置
加载spring mvc的配置
处理post乱码
<welcome-file-list>
<welcome-file>index</welcome-file>
</welcome-file-list>
<!-- spring：配置spring容器监听器 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/applicationContext-*.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- SpringMVC：前端控制器 -->
<servlet>
<servlet-name>rescue</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 加载springmvc配置 -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/spring-mvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- 所有的客户端请求 由 DispatcherServlet 来处理 -->
<servlet-mapping>
<servlet-name>rescue</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- post乱码处理 -->
<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>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
5 创建service层接口和实现类：
public interface RoleService { public List<ArRole> getRoleList(); }
@Service public class RoleServiceImpl implements RoleService{ @Autowired private ArRoleMapper roleMapper; public List<ArRole> getRoleList() { //返回所有的值 roleMapper.selectByExample(null); return null; } }
6 创建controller层：
@Controller public class RoleController { @Autowired private RoleService roleService; //返回JSON数据 @ResponseBody @RequestMapping("/role/list") public List<ArRole> getAll(){ return roleService.getRoleList(); } }