数据库连接池负责分配、管理和释放数据库连接
SpringMVC是一个基于DispatcherServlet的MVC框架,每一个请求最先访问的都是DispatcherServlet,DispatcherServlet负责转发每一个Request请求给相应的Handler,Handler处理以后再返回相应的视图(View)和模型(Model),返回的视图和模型都可以不指定,即可以只返回Model或只返回View或都不返回。
DispatcherServlet是继承自HttpServlet的,既然SpringMVC是基于DispatcherServlet的,那么我们先来配置一下DispatcherServlet,好让它能够管理我们希望它管理的内容。HttpServlet是在web.xml文件中声明的。
<!-- Spring MVC配置 --><!-- ====================================== --><servlet>
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 可以自定义servlet.xml配置文件的位置和名称,默认为WEB-INF目录下,名称为[<servlet-name>]-servlet.xml,如spring-servlet.xml
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring-servlet.xml</param-value> 默认
</init-param>
-->
<load-on-startup>1</load-on-startup></servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>*.do</url-pattern></servlet-mapping>
<!-- Spring配置 --><!-- ====================================== --><listener>
<listenerclass>
org.springframework.web.context.ContextLoaderListener
</listener-class></listener>
<!-- 指定Spring Bean的配置文件所在目录。默认配置在WEB-INF目录下 --><context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:config/applicationContext.xml</param-value></context-param>
<?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"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/context <a href="http://www.springframework.org/schema/context/spring-context-3.0.xsd">http://www.springframework.org/schema/context/spring-context-3.0.xsd</a>">
<!-- 启用spring mvc 注解 -->
<context:annotation-config />
<!-- 设置使用注解的类所在的jar包 -->
<context:component-scan base-package="controller"></context:component-scan>
<!-- 完成请求和注解POJO的映射 -->
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />
<!-- 对转向页面的路径解析。prefix:前缀, suffix:后缀 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:prefix="/jsp/" p:suffix=".jsp" /></beans>
<context:component-scan base-package="com.persia">
<!-- 开启组件扫描 -->《开启包组件扫描》
</context:component-scan>
<context:annotation-config>
<!--开启注解处理器--><开启注解处理器>
</context:annotation-config>
<!-- 使用注解,省去了propertity的xml配置,减少xml文件大小 -->
<bean id="personServiceAnno"
class="com.persia.PersonServiceAnnotation"></bean>
<bean id="personDaoBeanAnno"
class="com.persia.PersonDaoBean"></bean>
<bean id="personDaoBeanAnno2"
class="com.persia.PersonDaoBean"></bean>
<!-- 自动注解 -->
<bean id="personServiceAutoInject"
class="com.persia.PersonServiceAutoInject"
autowire="byName"></bean>
<bean id="personService"
class="com.persia.PersonServiceBean">
<!-- 由spring容器去创建和维护,我们只要获取就可以了 -->
</bean>
<bean id="personService2"
class="com.persia.PersonServiceBeanFactory" factory-method="createInstance"
lazy-init="true"
init-method="init"
destroy-method="destory">
<!-- 静态工厂获取bean -->
</bean>
<bean id="fac"
class="com.persia.PersonServiceBeanInsFactory"></bean>
<bean id="personService3" factory-bean="fac" factory-method="createInstance"
scope="prototype">
<!-- 实例工厂获取bean,先实例化工厂再实例化bean-->
</bean>
<!-- ref方式注入属性 -->
<bean id="personDao"
class="com.persia.PersonDaoBean"></bean>
<bean id="personService4"
class="com.persia.PersonServiceBean">
<property name="personDao"
ref="personDao"></property>
</bean>
<!-- 内部bean方式注入 -->
<bean id="personService5"
class="com.persia.PersonServiceBean">
<property name="personDao">
<bean
class="com.persia.PersonDaoBean"></bean>
</property>
<property name="name" value="persia"></property>
<property name="age"
value="21"></property>
<property name="sets">
<!-- 集合的注入 -->
<set>
<value>第一个</value>
<value>第二个</value>
<value>第三个</value>
</set>
</property>
<property name="lists">
<!-- 集合的注入 -->
<list>
<value>第一个l</value>
<value>第二个l</value>
<value>第三个l</value>
</list>
</property>
<property name="properties">
<props>
<prop key="key1">value1</prop>
<prop key="key2">value2</prop>
<prop key="key3">value3</prop>
</props>
</property>
<property name="map">
<map>
<entry key="key1"
value="value-1"></entry>
<entry key="key2"
value="value-2"></entry>
<entry key="key3"
value="value-3"></entry>
</map>
</property>
</bean>
<bean id="personService6"
class="com.persia.PersonServiceBean">
<constructor-arg index="0" value="构造注入的name" ></constructor-arg>
<!-- 基本类型可以不写type -->
<constructor-arg index="1"
type="com.persia.IDaoBean" ref="personDao">
</constructor-arg>
</bean>
</beans>2.开启AOP:
<?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:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd
">
<aop:aspectj-autoproxy></aop:aspectj-autoproxy>
<bean id="myInterceptor"
class="com.persia.service.MyInterceptor"></bean>
<bean id="personServiceImpl"
class="com.persia.service.impl.PersonServiceImpl"></bean>
</beans>AOP的xml版本<?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:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd
">
<aop:aspectj-autoproxy></aop:aspectj-autoproxy>
<bean id="personService"
class="com.persia.service.impl.PersonServiceImpl"></bean>
<bean id="aspectBean"
class="com.persia.service.MyInterceptor"></bean>
<aop:config>
<aop:aspect id="myaop" ref="aspectBean">
<aop:pointcut id="mycut" expression="execution(*
com.persia.service.impl.PersonServiceImpl.*(..))"/>
<aop:pointcut id="argcut" expression="execution(*
com.persia.service.impl.PersonServiceImpl.*(..)) and args(name)"/>
<aop:before pointcut-ref="mycut" method="doAccessCheck"
/>
<aop:after-returning pointcut-ref="mycut"
method="doAfterReturning"/>
<aop:after-throwing pointcut-ref="mycut"
method="doThrowing"/>
<aop:after pointcut-ref="argcut"
method="doAfter" arg-names="name"/>
<aop:around pointcut-ref="mycut" method="arround"/>
</aop:aspect>
</aop:config>
</beans>3.开启事务和注解:
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
">
<aop:aspectj-autoproxy></aop:aspectj-autoproxy>
<!-- 配置数据源 -->
<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=""/>
<!-- 连接池启动时的初始值 -->
<property name="initialSize"
value="1"/>
<!-- 连接池的最大值 -->
<property name="maxActive"
value="500"/>
<!-- 最大空闲值.当经过一个高峰时间后,连接池可以慢慢将已经用不到的连接慢慢释放一部分,一直减少到maxIdle为止 -->
<property name="maxIdle"
value="2"/>
<!-- 最小空闲值.当空闲的连接数少于阀值时,连接池就会预申请去一些连接,以免洪峰来时来不及申请 -->
<property name="minIdle"
value="1"/>
</bean>
<!-- 配置事务管理器-->
<bean id="txManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource"
ref="dataSource"/>
</bean>
<!-- 配置业务bean -->
<bean id="personService"
class="com.persia.service.impl.PersonServiceImpl">
<property name="ds"
ref="dataSource"></property>
</bean>
<!-- 采用@Transactional注解方式来使用事务 -->
<tx:annotation-driven
transaction-manager="txManager"/>
</beans>XML版本:
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
">
<aop:aspectj-autoproxy></aop:aspectj-autoproxy>
<!-- 配置数据源 -->
<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=""/>
<!-- 连接池启动时的初始值 -->
<property name="initialSize"
value="1"/>
<!-- 连接池的最大值 -->
<property name="maxActive" value="500"/>
<!-- 最大空闲值.当经过一个高峰时间后,连接池可以慢慢将已经用不到的连接慢慢释放一部分,一直减少到maxIdle为止 -->
<property name="maxIdle"
value="2"/>
<!-- 最小空闲值.当空闲的连接数少于阀值时,连接池就会预申请去一些连接,以免洪峰来时来不及申请 -->
<property name="minIdle"
value="1"/>
</bean>
<!-- 配置事务管理器 -->
<bean id="txManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource"
ref="dataSource"/>
</bean>
<!-- 配置业务bean -->
<bean id="personService"
class="com.persia.service.impl.PersonServiceImpl">
<property name="ds"
ref="dataSource"></property>
</bean>
<!-- 使用XML来使用事务管理-->
<aop:config>
<!-- 配置一个切面,和需要拦截的类和方法 -->
<aop:pointcut id="transactionPointcut"
expression="execution(* com.persia.service..*.*(..))"/>
<aop:advisor advice-ref="txAdvice"
pointcut-ref="transactionPointcut"/>
</aop:config>
<!-- 配置一个事务通知 -->
<tx:advice id="txAdvice"
transaction-manager="txManager">
<tx:attributes>
<!-- 方法以get开头的,不使用事务 -->
<tx:method name="get*"
read-only="true" propagation="NOT_SUPPORTED"/>
<!-- 其他方法以默认事务进行 -->
<tx:method name="*"/>
</tx:attributes>
</tx:advice>
</beans>4.SSH:
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
">
<!-- 配置数据源 -->
<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=""/>
<!-- 连接池启动时的初始值 -->
<property name="initialSize"
value="1"/>
<!-- 连接池的最大值 -->
<property name="maxActive"
value="500"/>
<!-- 最大空闲值.当经过一个高峰时间后,连接池可以慢慢将已经用不到的连接慢慢释放一部分,一直减少到maxIdle为止 -->
<property name="maxIdle"
value="2"/>
<!-- 最小空闲值.当空闲的连接数少于阀值时,连接池就会预申请去一些连接,以免洪峰来时来不及申请 -->
<property name="minIdle"
value="1"/>
</bean>
<!-- 配置hibernate的sessionFactory -->
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource"><ref
bean="dataSource" /></property>
<property name="mappingResources">
<list>
<value>com/persia/model/Person.hbm.xml</value>
</list>
</property>
<!-- 1.首先在sessionFactory里面配置以上3条设置 -->
<!-- 2.然后得在类路径下面添加一个ehcache.xml的缓存配置文件 -->
<!-- 3.最后在要使用缓存的实体bean的映射文件里面配置缓存设置 -->
<!--使用二级缓存-->
<!-- 不使用查询缓存,因为命中率不是很高 -->
<!-- 使用Ehcache缓存产品 -->
<property name="hibernateProperties">
<value>
hibernate.dialect=org.hibernate.dialect.MySQL5Dialect
hibernate.hbm2ddl.auto=update
hibernate.show_sql=false
hibernate.format_sql=false
hibernate.cache.use_second_level_cache=true
hibernate.cache.use_query_cache=false
hibernate.cache.provider_class=org.hibernate.cache.EhCacheProvider
</value>
</property>
</bean>
<!-- 配置Spring针对hibernate的事务管理器 -->
<bean id="txManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory"
ref="sessionFactory"/>
</bean>
<!-- 配置使用注解的方式来使用事务 -->
<tx:annotation-driven transaction-manager="txManager"/>
<!-- 使用手工配置的注解方式来注入bean -->
<context:annotation-config></context:annotation-config>
<!--定义要注入的业务bean -->
<bean id="personService"
class="com.persia.service.impl.PersonServiceImpl"></bean>
<!--将Struts的action交给Spring容器来管理 -->
<bean name="/person/list"
class="com.persia.struts.PersonListAction">
<!--1.这里要求name和struts-config里面的action的path名称一致,因为id不允许有特殊字符-->
<!--2.还得在Struts-config文件里面添加Spring的请求处理器,该处理器会根据action的path属性到Spring容器里面寻找这个bean,若找到了则用这个bean来处理用户的请求-->
<!--3.然后去掉action的type标签和值(可选),当Spring处理器找不到该bean时,才会使用Struts的action-->
<!--4.最后在action里面使用Spring的注入方式来注入业务bean-->
</bean>
<bean name="/person/manage"
class="com.persia.struts.PersonManageAction"></bean>
</beans>5.SSH2:
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
">
<!-- 配置数据源 -->
<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=""/>
<!-- 连接池启动时的初始值 -->
<property name="initialSize"
value="1"/>
<!-- 连接池的最大值 -->
<property name="maxActive" value="500"/>
<!-- 最大空闲值.当经过一个高峰时间后,连接池可以慢慢将已经用不到的连接慢慢释放一部分,一直减少到maxIdle为止 -->
<property name="maxIdle"
value="2"/>
<!-- 最小空闲值.当空闲的连接数少于阀值时,连接池就会预申请去一些连接,以免洪峰来时来不及申请 -->
<property name="minIdle"
value="1"/>
</bean>
<!-- 配置hibernate的sessionFactory -->
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource"><ref
bean="dataSource" /></property>
<property name="mappingResources">
<list>
<value>com/persia/model/Person.hbm.xml</value>
</list>
</property>
<!-- 1.首先在sessionFactory里面配置以上3条设置 -->
<!-- 2.然后得在类路径下面添加一个ehcache.xml的缓存配置文件 -->
<!-- 3.最后在要使用缓存的实体bean的映射文件里面配置缓存设置 -->
<!--使用二级缓存-->
<!-- 不使用查询缓存,因为命中率不是很高 -->
<!-- 使用Ehcache缓存产品 -->
<property name="hibernateProperties">
<value>
hibernate.dialect=org.hibernate.dialect.MySQL5Dialect
hibernate.hbm2ddl.auto=update
hibernate.show_sql=false
hibernate.format_sql=false
hibernate.cache.use_second_level_cache=true
hibernate.cache.use_query_cache=false
hibernate.cache.provider_class=org.hibernate.cache.EhCacheProvider
</value>
</property>
</bean>
<!-- 配置Spring针对hibernate的事务管理器 -->
<bean id="txManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory"
ref="sessionFactory"/>
</bean>
<!-- 配置使用注解的方式来使用事务 -->
<tx:annotation-driven transaction-manager="txManager"/>
<!-- 使用手工配置的注解方式来注入bean -->
<context:annotation-config></context:annotation-config>
<!--定义要注入的业务bean -->
<bean id="personService"
class="com.persia.service.impl.PersonServiceImpl"></bean>
<!--注入Struts 2的action -->
<bean id="personList"
class="com.persia.struts2.action.PersonListAction"></bean>
</beans>6.SSJ:
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
">
<!-- 使用手工配置的注解方式来注入bean -->
<context:annotation-config></context:annotation-config>
<!-- 1.配置Spring集成JPA -->
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean">
<property name="persistenceUnitName"
value="SpringJPAPU"/>
</bean>
<!--2.配置Spring针对JPA的事务 -->
<bean id="txManager"
class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory"
ref="entityManagerFactory"/>
</bean>
<!--3.开启事务注解 -->
<tx:annotation-driven transaction-manager="txManager"/>
<!--以上3个Spring集成JPA的配置,在web项目先添加Spring支持,后添加JPA支持时会自动生成 -->
<!-- 配置业务bean -->
<bean id="personService"
class="com.persia.service.impl.PersonServiceImpl"></bean>
<!-- 配置Struts的action -->
<bean name="/person/list" class="com.persia.struts.PersonListAction"/>
<bean name="/person/manage"
class="com.persia.struts.PersonManageAction"/>
</beans>
原文:https://www.cnblogs.com/heartwarming/p/10372732.html