Easy to use, please like and collect!
Please bring the author's name @LLLua and the original address when forwarding, thank you!
Find the official example on the spring official website or github, and copy it into your own project.
Understand the configuration of the filter in web.xml
Some understanding is good, such as
CharacterEncodingFilter, which is used to convert character sets
Some can be understood in detail, such as
RequestContextListener (web container startup shutdown event listener)
ContextLoaderListener (web container and spring integration)
DispatcherServlet (servlet interceptor)
Press the ctrl key on it to see the source code
Next, look at applicationContext.xml, the ontology is relatively simple, only one automatic package scan and aop
But two xmls were introduced, and it seems that the bulk is in those two imports.
<?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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc" xmlns:context="http://www.springframework.org/schema/context" xmlns:task="http://www.springframework.org/schema/task" xsi:schemaLocation ="http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task.xsd"> <context:component-scan base-package="com.my" annotation-config="true"> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" /> </context:component-scan> <aop:aspectj-autoproxy/> <import resource="applicationContext-spring-session.xml"/> <import resource="applicationContext-datasource.xml"/> </beans>
Open applicationContext-spring-session.xml
Because we want to connect redis and do redis distribution, we use jedis and do some configuration.
<?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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation=" http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"> <bean id="redisHttpSessionConfiguration" class="org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration"> <property name="maxInactiveIntervalInSeconds"value="1800" /> </bean> <bean id="defaultCookieSerializer" class="org.springframework.session.web.http.DefaultCookieSerializer"> <property name="domainName" value=".xxx.com" /> <property name="useHttpOnlyCookie" value="true" /> <property name="cookiePath" value="/" /> <property name="cookieMaxAge" value="31536000" /> </bean> <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig"> <property name="maxTotal" value="20"/> </bean> <bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory"> <property name="hostName" value="127.0.0.1" /> <property name="port" value="6379" /> <property name="poolConfig" ref="jedisPoolConfig" /> </bean> </beans>
再看applicationContext-datasource.xml
实际设置的值在datasource.properties中
写的这么详细了，相信以后的自己和可能会有的读者也一定看的懂。。。
<?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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation=" http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"> <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="order" value="2"/> <property name="ignoreUnresolvablePlaceholders" value="true"/> <property name="locations"> <list> <value>classpath:datasource.properties</value> </list> </property> <property name="fileEncoding" value="utf-8"/> </bean> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="${db.driverClassName}"/> <property name="url" value="${db.url}"/> <property name="username" value="${db.username}"/> <property name="password" value="${db.password}"/> <!-- 连接池启动时的初始值 --> <property name="initialSize" value="${db.initialSize}"/> <!-- 连接池的最大值 --> <property name="maxActive" value="${db.maxActive}"/> <!-- 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="${db.maxIdle}"/> <!-- 最小空闲值.当空闲的连接数少于阀值时，连接池就会预申请去一些连接，以免洪峰来时来不及申请 --> <property name="minIdle" value="${db.minIdle}"/> <!-- 最大建立连接等待时间。如果超过此时间将接到异常。设为－1表示无限制 --> <property name="maxWait" value="${db.maxWait}"/> <!--#给出一条简单的sql语句进行验证 --> <!--<property name="validationQuery" value="select getdate()" />--> <property name="defaultAutoCommit" value="${db.defaultAutoCommit}"/> <!-- 回收被遗弃的（一般是忘了释放的）数据库连接到连接池中 --> <!--<property name="removeAbandoned" value="true" />--> <!-- 数据库连接过多长时间不用将被视为被遗弃而收回连接池中 --> <!--<property name="removeAbandonedTimeout" value="120" />--> <!-- #连接的超时时间，默认为半小时。 --> <property name="minEvictableIdleTimeMillis" value="${db.minEvictableIdleTimeMillis}"/> <!--# 失效检查线程运行时间间隔，要小于MySQL默认--> <property name="timeBetweenEvictionRunsMillis" value="40000"/> <!--# 检查连接是否有效--> <property name="testWhileIdle" value="true"/> <!--# 检查连接有效性的SQL语句--> <property name="validationQuery" value="SELECT 1 FROM dual"/> </bean> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> <property name="mapperLocations" value="classpath*:mappers/*Mapper.xml"></property> <!-- 分页插件 --> <property name="plugins"> <array> <bean class="com.github.pagehelper.PageHelper"> <property name="properties"> <value> dialect=mysql </value> </property> </bean> </array> </property> </bean> <bean name="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.my.dao"/> </bean> <!-- 使用@Transactional进行声明式事务管理需要声明下面这行 --> <!--<tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true" />--> <!-- 事务管理 --> <!--<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">--> <!--<property name="dataSource" ref="dataSource"/>--> <!--<property name="rollbackOnCommitFailure" value="true"/>--> <!--</bean>--> </beans>