Spring Boot学习笔记
简介
Spring Boot是Spring的一个子项目，它让创建独立运行（通过java -jar）的、产品级别的Spring应用变得简单：
- 支持创建独立运行于JVM中的Spring程序
- 内嵌Tomcat、Jetty或者Undertow，不需要部署War包
- 简化Ma…
1 year ago
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Spring对WebSocket的支持
简介
Spring 4.x引入了新的模块spring-websocket，对WebSocket提供了全面的支持，Spring的WebSocket实现遵循JSR-356（Java WebSocket API），并且添加了一些额外特性。
绝大部分现代浏览器均支持WebSocket，包括…
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1 year ago
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1
Spring对JMS的支持
简介
Spring 提供了JMS的集成，简化JMS的使用，提供的API封装类似于Spring的JDBC集成。
JMS的功能大体上分为两类——接收、发送消息。Spring提供了：
- JmsTemplate来完成消息的发送、同步接收
- 消息监听器容器（message li…
3 years ago
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Spring配置：集成Hibernate、JacksonJSON、AspectJ等框架
本文提及的该套配置文件，覆盖了JavaEE项目开发的最常见需求，包括：依赖注入、事务控制、AOP、任务调度、缓存、MVC框架等方面的内容。
容易改变的配置项独立到属性文件中：
Spring配置文件部分：
Spring MVC配置文件部分：
ehcache配置部分：
Web.xml配置（使用了Spring的JavaConfig）：
Java Config类：
Maven依赖包列表：
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hibernateDialect=org.hibernate.dialect.MySQL5Dialect #启用了log4jdbc支持 jdbcDriver=net.sf.log4jdbc.DriverSpy jdbcDriverUrl=jdbc:log4jdbc:mysql://192.168.0.201:3306/initpemsdb1.1.1 jdbcUserName=root jdbcPassword=root |
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<?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:util="http://www.springframework.org/schema/util" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:task="http://www.springframework.org/schema/task" xmlns:cache="http://www.springframework.org/schema/cache" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-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/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.0.xsd http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-3.1.xsd "> <!-- 定义属性，在后面的配置中可以使用#{appCfg.xxx}引用 --> <util:properties id="appCfg" location="classpath:applicationConfig.properties" /> <!-- 包扫描配置 --> <context:component-scan base-package="cc.gmem.demo"> <!-- 去除Java Config类 --> <context:exclude-filter type="annotation" expression="org.springframework.context.annotation.Configuration" /> <!-- 去除Spring MVC类 --> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" /> <!-- 匹配AspectJ Pattern的类被去除 --> <context:exclude-filter type="aspectj" expression="cc.gmem.demo.aop.web.*" /> </context:component-scan> <!-- 启用注解支持 --> <context:annotation-config /> <!-- 支持@Configurable注解 --> <context:spring-configured /> <!-- 启用注解方式的事务：基于AspectJ织入 --> <tx:annotation-driven transaction-manager="txManager" mode="aspectj" /> <!-- 启用注解方式的缓存配置：基于AspectJ织入 --> <cache:annotation-driven cache-manager="cacheManager" mode="aspectj" /> <!-- 启用注解方式的任务执行(例如@Async)：基于AspectJ织入 --> <task:annotation-driven executor="taskExecutor" mode="aspectj" /> <!-- 任务调度器配置，pool-size为线程池大小，限制了同时最多被调度的任务 --> <task:scheduler pool-size="100" id="scheduler" /> <!-- 任务计划列表，支持固定频率、固定延迟、Cron表达式等 --> <task:scheduled-tasks scheduler="scheduler"> <task:scheduled fixed-rate="120000" method="run" ref="hibernateStatisticsMonitor" /> </task:scheduled-tasks> <!-- 任务执行器，用于异步执行任务 --> <task:executor id="taskExecutor" keep-alive="3600" pool-size="10-100" queue-capacity="10000" rejection-policy="CALLER_RUNS" /> <!-- 引入其它Spring配置文件 --> <import resource="report-and-etl.xml" /> <!-- Hibernate配置 --> <bean id="dataSource" class="org.logicalcobwebs.proxool.ProxoolDataSource"> <property name="alias" value="connectionPool" /> <property name="driver" value="#{appCfg.jdbcDriver}" /> <property name="driverUrl" value="#{appCfg.jdbcDriverUrl}" /> <property name="user" value="#{appCfg.jdbcUserName}" /> <property name="password" value="#{appCfg.jdbcPassword}" /> <property name="statistics" value="10s" /> <property name="minimumConnectionCount" value="10" /> <property name="maximumConnectionCount" value="100" /> <property name="simultaneousBuildThrottle" value="10" /> <property name="maximumActiveTime" value="3600000" /> </bean> <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate" autowire="byName" /> <bean id="nativeJdbcExtractor" class="org.springframework.jdbc.support.nativejdbc.CommonsDbcpNativeJdbcExtractor" lazy-init="true" /> <bean id="sessionFactory" p:dataSource-ref="dataSource" class="cc.gmem.demo.hibernate.AnnotationSessionFactoryBean" depends-on="appCfg" > <property name="packagesToScan"> <list> <value>cc.gmem.demo.**.domain</value> </list> </property> <property name="hibernateProperties"> <value> hibernate.dialect=#{appCfg.hibernateDialect} hibernate.jdbc.batch_size=30 hibernate.show_sql=false hibernate.format_sql=true hibernate.generate_statistics=true hibernate.transaction.factory_class=org.hibernate.transaction.JDBCTransactionFactory hibernate.current_session_context_class=org.springframework.orm.hibernate3.SpringSessionContext hibernate.query.factory_class=org.hibernate.hql.ast.ASTQueryTranslatorFactory hibernate.hbm2ddl.auto=update #启用二级缓存 hibernate.cache.use_second_level_cache=true hibernate.cache.use_query_cache=true hibernate.cache.region.factory_class=org.hibernate.cache.SingletonEhCacheRegionFactory </value> </property> </bean> <!-- Spring缓存配置 --> <bean id="cacheManager" class="org.springframework.cache.ehcache.EhCacheCacheManager"> <property name="cacheManager" ref="ehcache" /> </bean> <bean id="ehcache" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean"> <property name="configLocation"> <value>classpath:ehcache.xml</value> </property> <property name="shared" value="true" /> </bean> <bean id="hibernateStatisticsMonitor" class="cc.gmem.demo.hibernate.HibernateStatisticsMonitor" /> <bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager" p:sessionFactory-ref="sessionFactory" /> <!-- Velocity引擎配置 --> <bean id="velocityEngine" class="org.apache.velocity.app.VelocityEngine"> <constructor-arg type="java.util.Properties"> <value> <![CDATA[ #{T(org.apache.velocity.runtime.RuntimeConstants).RUNTIME_LOG_LOGSYSTEM_CLASS}=org.apache.velocity.runtime.log.Log4JLogChute runtime.log.logsystem.log4j.logger=velocityLogger #{T(org.apache.velocity.runtime.RuntimeConstants).INPUT_ENCODING}=UTF-8 #{T(org.apache.velocity.runtime.RuntimeConstants).OUTPUT_ENCODING}=UTF-8 #{T(org.apache.velocity.runtime.RuntimeConstants).VM_PERM_ALLOW_INLINE}=true #{T(org.apache.velocity.runtime.RuntimeConstants).RESOURCE_LOADER}=class #{T(org.apache.velocity.runtime.RuntimeConstants).PARSER_POOL_SIZE}=100 class.resource.loader.class=org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader ]]> </value> </constructor-arg> </bean> <!--国际化支持--> <bean id="messageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource"> <property name="basenames"> <list> <value>classpath:message.gmemdemo</value> </list> </property> <property name="defaultEncoding" value="UTF-8" /> <property name="cacheSeconds" value="5" /> </bean> <!--Jackson JSON --> <bean id="objectMapper" class="com.fasterxml.jackson.databind.ObjectMapper" autowire="byType" /> <!-- Spring类型转换服务，特别是用于时间日期格式转换 --> <bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean"> <property name="converters"> <set> <bean class="net.greenmemory.spring.converter.DateTimeConvertor"> <constructor-arg> <array> <value>yyyy-MM-dd</value> <value>yyyy-MM-dd HH:mm:ss</value> <value>yyyy-MM-dd HH:mm:ss.SSS</value> </array> </constructor-arg> </bean> </set> </property> <property name="formatters"> <set> <bean class="org.springframework.format.datetime.DateFormatter"> <constructor-arg> <value>yyyy-MM-dd</value> </constructor-arg> </bean> </set> </property> <property name="formatterRegistrars"> <set> </set> </property> </bean> </beans> |
6 years ago
0
基于JavaConfig方式的Spring+Hibernate集成
JavaConfig类
包含Spring、Hibernate、事务管理等功能的样例
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package sparknet.wnet.saic.intf.spring; import java.io.IOException; import java.util.Properties; import javax.inject.Inject; import javax.sql.DataSource; import net.greenmemory.breeze.persist.OracleProxoolDataSource; import net.greenmemory.commons.db.QueryRunner; import net.greenmemory.commons.lang.NumberUtils; import net.greenmemory.spring.core.io.ClassPathResource; import org.hibernate.SessionFactory; import org.springframework.aop.framework.autoproxy.InfrastructureAdvisorAutoProxyCreator; import org.springframework.beans.factory.BeanInitializationException; import org.springframework.context.ApplicationContext; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.ComponentScan; import org.springframework.context.annotation.ComponentScan.Filter; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.EnableAspectJAutoProxy; import org.springframework.context.annotation.FilterType; import org.springframework.jdbc.core.JdbcTemplate; import org.springframework.orm.hibernate3.HibernateTransactionManager; import org.springframework.transaction.PlatformTransactionManager; import org.springframework.transaction.annotation.AnnotationTransactionAttributeSource; import org.springframework.transaction.interceptor.TransactionAttributeSourceAdvisor; import org.springframework.transaction.interceptor.TransactionInterceptor; import cc.gmem.tools.hibernatetools.spring.Hibernate3LocalSessionFactoryBean; @Configuration @ComponentScan ( basePackages = { "cc.gmem.saic", "cc.gmem.intf" }, excludeFilters = { @Filter ( type = FilterType.ANNOTATION, value = Configuration.class ) } ) @EnableAspectJAutoProxy public class BeanDefinitionRegistrar { @Inject private ApplicationContext applicationContext; @Bean ( name = "cfg" ) public Properties getAppConfig() { Properties props = new Properties(); try { props.load( new ClassPathResource( "wsi.properties" ).getInputStream() ); } catch ( IOException e ) { throw new BeanInitializationException( e.getMessage(), e ); } return props; } @Bean ( name = "dataSource" ) public DataSource getDataSource() { OracleProxoolDataSource dataSource = new OracleProxoolDataSource(); dataSource.setAlias( getAppConfig().getProperty( "jdbc.alias" ) ); dataSource.setDriver( getAppConfig().getProperty( "jdbc.driverClass" ) ); dataSource.setDriverUrl( getAppConfig().getProperty( "jdbc.url" ) ); dataSource.setUser( getAppConfig().getProperty( "jdbc.user" ) ); dataSource.setPassword( getAppConfig().getProperty( "jdbc.password" ) ); dataSource.setMinimumConnectionCount( NumberUtils.toInt( getAppConfig().getProperty( "jdbc.minimumConnectionCount" ), 10 ) ); dataSource.setMaximumConnectionCount( NumberUtils.toInt( getAppConfig().getProperty( "jdbc.maximumConnectionCount" ), 100 ) ); dataSource.setSimultaneousBuildThrottle( NumberUtils.toInt( getAppConfig().getProperty( "jdbc.simultaneousBuildThrottle" ), 50 ) ); dataSource.setMaximumActiveTime( NumberUtils.toInt( getAppConfig().getProperty( "jdbc.maximumActiveTime" ), 1200000 ) ); dataSource.setEncrypted( false ); dataSource.init(); return dataSource; } @Bean ( name = "sessionFactory" ) public SessionFactory getSessionFactory() throws Exception { Hibernate3LocalSessionFactoryBean bean = new Hibernate3LocalSessionFactoryBean(); bean.setApplicationContext( applicationContext ); bean.setDataSource( getDataSource() ); bean.setMappingResources( new String[] { "wnetJhInterface.hbm.xml" } ); bean.setAutoRegister( true ); Properties hibernateProperties = new Properties(); hibernateProperties.setProperty( "hibernate.dialect", "org.hibernate.dialect.Oracle10gDialect" ); hibernateProperties.setProperty( "hibernate.jdbc.batch_size", "100" ); hibernateProperties.setProperty( "hibernate.default_entity_mode", "dom4j" ); hibernateProperties.setProperty( "hibernate.transaction.factory_class", "org.hibernate.transaction.JDBCTransactionFactory" ); hibernateProperties.setProperty( "hibernate.current_session_context_class", "org.springframework.orm.hibernate3.SpringSessionContext" ); bean.setHibernateProperties( hibernateProperties ); bean.afterPropertiesSet(); return bean.getObject(); } @Bean ( name = "txManager" ) public PlatformTransactionManager getTransactionManager() throws Exception { HibernateTransactionManager txMgr = new HibernateTransactionManager(); txMgr.setSessionFactory( getSessionFactory() ); return txMgr; } @Bean ( name = "jdbcTemplate" ) public JdbcTemplate getJdbcTemplate() { return new JdbcTemplate( getDataSource() ); } @Bean ( name = "queryRunner" ) public QueryRunner getQueryRunner() { return new QueryRunner( getDataSource() ); } @Bean public AnnotationTransactionAttributeSource transactionAttributeSource() { return new AnnotationTransactionAttributeSource(); } @Bean public TransactionInterceptor transactionInterceptor() throws Exception { return new TransactionInterceptor( getTransactionManager(), transactionAttributeSource() ); } @Bean public TransactionAttributeSourceAdvisor internalTransactionAdvisor() throws Exception { return new TransactionAttributeSourceAdvisor( transactionInterceptor() ); } @Bean public InfrastructureAdvisorAutoProxyCreator internalAutoProxyCreator() { return new InfrastructureAdvisorAutoProxyCreator(); } } |
初始化Spring ApplicationContext的代码
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ApplicationContext ctx = new AnnotationConfigApplicationContext(BeanDefinitionRegistrar.class); DataSource ds= ctx.getBean(DataSource.class); |
6 years ago
0
AspectJ编程学习笔记
AOP基本概念
| 名词 | 含义 |
| 切面（方面，Aspect） | 一个关注点的模块化，这个关注点实现可能横切（crosscutting）多个对象切面的例子包括：事务控制、日志记录、权限控制等在AspectJ中，切面表现为Java类，其源码具有AspectJ的特殊语法增强，… |
7 years ago
0
14
Spring与Quartz的任务调度比较
任务调度代码比较
Spring 2.x 任务调度示例
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<bean id="demoJob" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean"> <!-- 目标Bean --> <property name="targetObject"> <bean class="cc.gmem.demo.DemoService" /> </property> <!-- 目标方法 --> <property name="targetMethod" value="doStuff" /> <!-- 防止并发执行 --> <property name="concurrent" value="false" /> </bean> <!-- 简单触发器 --> <bean id="simpleTrigger" class="org.springframework.scheduling.quartz.SimpleTriggerBean"> <property name="jobDetail" ref="demoJob" /> <!-- 启动后，调度开始的时间 --> <property name="startDelay" value="0" /> <!-- 每隔2000ms调度一次 --> <property name="repeatInterval" value="2000" /> </bean> <!-- Cron触发器 --> <bean id="cronTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean"> <property name="jobDetail" ref="demoJob" /> <property name="cronExpression" value="15 0/2 * * * ?" /> </bean> <!-- 调度工厂Bean --> <bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean"> <property name="triggers"> <list> <ref bean="simpleTrigger" /> <ref bean="cronTrigger" /> </list> </property> </bean> |
Spring 3.x 任务调度示例
配置文件方式
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<!-- 任务调度器配置，pool-size为线程池大小，限制了同时最多被调度的任务 --> <task:scheduler pool-size="100" id="scheduler" /> <!-- 任务计划列表，支持固定频率、固定延迟、Cron表达式等 --> <task:scheduled-tasks scheduler="scheduler"> <task:scheduled fixed-rate="120000" method="doStuff" ref="demoService" /> <task:scheduled cron="15 0/2 * * * ?" method="doStuff" ref="demoService" /> </task:scheduled-tasks> |
Quartz任务调度示例
特性比较
| 比较项 | Spring2.x | Spring3.x | Quartz |
| 优… |
7 years ago
0
Spring知识集锦
配置
Spring各种注入方式的区别
| 注入方式 | 说明 |
| @Resource | 来源：JSR250 (Common Annotations for Java) 注入方式：
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7 years ago
0