ssm框架整合

ssm框架整合
一.maven配置
1.引入jar包
2.创建src/main/resources/spring
3.创建src/main/resources/mapper
二.数据库连接
1.创建untitled文件，命名为jdbc.properties，存储在src/main/resources中
内容：
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:8080/xxx(数据库名称)?useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=xxx
2.配置mybatis，创建mybatis-config.xml文件 ,存储在src/main/resources中

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE configuration SYSTEM "http://mybatis.org/dtd/mybatis-3-config.dtd" PUBLIC "-//mybatis.org//DTD Config 3.0//EN">
<configuration>
<!--  配置全局属性  -->
<settings>
<!--  使用jdbc的getGeneratedKeys获取数据库自增主键值  -->
<setting name="useGeneratedKeys" value="true"/>
<!--  使用列别名替换列名 默认:true  -->
<setting name="useColumnLabel" value="true"/>
<!--  开启驼峰命名转换:Table{create_time} -> Entity{createTime}  -->
<setting name="mapUnderscoreToCamelCase" value="true"/>
<!--  打印查询语句  -->
<setting name="logImpl" value="STDOUT_LOGGING"/>
</settings>
</configuration>

3.配置spring,创建spring-dao.xml文件，存储在src/main/resources/spring中

<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properties的属性：${url}  -->
<bean class="com.imooc.myo2o.util.EncryptPropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:jdbc.properties</value>
<value>classpath:redis.properties</value>
</list>
</property>
<property name="fileEncoding" value="UTF-8"/>
</bean>
或者（刚开始时）
<context:property-placeholder location="classpath:jdbc.properties"/>
<!--  2.数据库连接池  -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<!--  配置连接池属性  -->
<property name="driverClass" value="${jdbc.driver}"/>
<property name="jdbcUrl" value="${jdbc.url}"/>
<property name="user" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<!--  c3p0连接池的私有属性  -->
<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="10000"/>
<!--  当获取连接失败重试次数  -->
<property name="acquireRetryAttempts" value="2"/>
</bean>
<!--  3.配置SqlSessionFactory对象  -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!--  注入数据库连接池  -->
<property name="dataSource" ref="dataSource"/>
<!--  配置MyBaties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  -->
<property name="typeAliasesPackage" value="com.xxx.xxx.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容器中  -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--  注入sqlSessionFactory  -->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!--  给出需要扫描Dao接口包  -->
<property name="basePackage" value="com.xxx.xxx.dao"/>
</bean>
</beans>

4.配置spring,创建spring-service.xml文件，存储在src/main/resources/spring中

<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.xxx.xxx.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  -->
<tx:annotation-driven transaction-manager="transactionManager"/>
</beans>

5.配置spring,创建spring-web.xml文件，存储在src/main/resources/spring中

<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-3.2.xsd">
<!--  配置SpringMVC  -->
<!--  1.开启SpringMVC注解模式  -->
<!--
 简化配置： (1)自动注册DefaultAnootationHandlerMapping,AnotationMethodHandlerAdapter 
		(2)提供一些列：数据绑定，数字和日期的format @NumberFormat, @DateTimeFormat, xml,json默认读写支持 
-->
<mvc:annotation-driven/>
<!--
 2.静态资源默认servlet配置 (1)加入对静态资源的处理：js,gif,png (2)允许使用"/"做整体映射 
-->
<mvc:resources mapping="/resources/**" location="/resources/"/>
<mvc:default-servlet-handler/>
<!--  3.定义视图解析器  -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/html/"/>
<property name="suffix" value=".html"/>
</bean>
<!--  4.扫描web相关的bean  -->
<context:component-scan base-package="com.xxx.xxx.web"/>
</beans>

6.web.xml中增加代码

<!--  配置DispatcherServlet  -->
<servlet>
<servlet-name>seckill-dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!--
 配置springMVC需要加载的配置文件 spring-dao.xml,spring-service.xml,spring-web.xml 
			Mybatis - > spring -> springmvc 
-->
<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>
<!--  默认匹配所有的请求  -->
<url-pattern>/</url-pattern>
</servlet-mapping>