<ruby id="bdb3f"></ruby>

    <p id="bdb3f"><cite id="bdb3f"></cite></p>

      <p id="bdb3f"><cite id="bdb3f"><th id="bdb3f"></th></cite></p><p id="bdb3f"></p>
        <p id="bdb3f"><cite id="bdb3f"></cite></p>

          <pre id="bdb3f"></pre>
          <pre id="bdb3f"><del id="bdb3f"><thead id="bdb3f"></thead></del></pre>

          <ruby id="bdb3f"><mark id="bdb3f"></mark></ruby><ruby id="bdb3f"></ruby>
          <pre id="bdb3f"><pre id="bdb3f"><mark id="bdb3f"></mark></pre></pre><output id="bdb3f"></output><p id="bdb3f"></p><p id="bdb3f"></p>

          <pre id="bdb3f"><del id="bdb3f"><progress id="bdb3f"></progress></del></pre>

                <ruby id="bdb3f"></ruby>

                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                本篇介紹一些Spring與其他框架結合的實用功能,包括:Apache CXF WebService框架、Redis緩存、RabbitMQ消息、MyBatis框架。 另外對于Profile,也是Spring3.0開始新加的功能,對于開發測試環境、和生產環境分別采用不同的配置,有一定用處。 # Profile Spring3.1新屬性管理API:PropertySource、Environment、Profile。 Environment:環境,本身是一個PropertyResolver,但是提供了Profile特性,即可以根據環境得到相應數據(即激活不同的Profile,可以得到不同的屬性數據,比如用于多環境場景的配置(正式機、測試機、開發機DataSource配置))。 Profile:剖面,只有激活的剖面的組件/配置才會注冊到Spring容器,類似于maven中profile,Spring 3.1增加了一個在不同環境之間簡單切換的profile概念, 可以在不修改任何文件的情況下讓工程分別在 dev/test/production 等環境下運行。 為了減小部署維護,可以讓工程會默認運行在dev模式,而測試環境和生產環境通過增加jvm參數激活 production的profile. 比如,對于如下的一個例子,由于測試環境和生產環境,連接數據庫的方式不一樣,可以有如下的解決辦法: 1、首先ApplicationContext.xml中,xsi:schemaLocation需要引用3.2的xsd 2、ApplicationContext.xml配置如下: ~~~ <beans profile="production"> <bean id="dataSourcejdbc" class="org.springframework.jndi.JndiObjectFactoryBean"> <property name="jndiName" value="java:/MySqlDS_JDBC" /> </bean> </beans> <beans profile="dev"> <bean id="dataSourcejdbc" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver"/> <property name="url" value="jdbc:mysql://IP:3306/db?characterEncoding=utf-8"/> <property name="username" value="root"/> <property name="password" value="root"/> </bean> </beans> ~~~ 3、開發環境配置,在web.xml中,如下配置: ~~~ <context-param> <param-name>spring.profiles.default</param-name> <param-value>dev</param-value> </context-param> ~~~ 4、生產環境配置 比如,對于Jboss,在bin/run.conf里面,增加啟動參數:-Dspring.profiles.active=production JAVA_OPTS="-Xms2048m -Xmx2048m -XX:MaxPermSize=1024m -Dorg.jboss.resolver.warning=true -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=3600000 -Dsun.lang.ClassLoader.allowArraySyntax=true -Dorg.terracotta.quartz.skipUpdateCheck=true -Dspring.profiles.active=production" 以上是對于Web項目中如何利用profile的一種演示,如果是maven項目,也可以在maven打包時采用不同的profile,命令如下: mvn clean package -Dmaven.test.skip=true -Ponline 通過P參數采用不同的profile,這樣可以實現為開發、測試、生產打出不同的包。 不過,不推薦這種打包方式,應該是對于開發、測試、生產打出一樣的包,然后根據機器本身的環境,來決定程序是按照那種環境來運行。 如果公司有根據環境變量的自動化部署方式(比如dev/test/stage/online),則這個profile是非常管用的。 # WebService Java生態下的WebService框架非常多,apache cxf 是與spring結合最好的一種。配置步驟如下: 1、pom.xml,增加依賴: ~~~ <dependency> <groupId>org.apache.cxf</groupId> <artifactId>cxf-rt-frontend-jaxws</artifactId> <version>2.7.5</version> </dependency> <dependency> <groupId>org.apache.cxf</groupId> <artifactId>cxf-rt-transports-http</artifactId> <version>2.7.5</version> </dependency> ~~~ 2、web.xml,增加servlet: ?? ~~~ <!-- Web Service聲明開始 --> <servlet> <servlet-name>cxf</servlet-name> <servlet-class>org.apache.cxf.transport.servlet.CXFServlet</servlet-class> <load-on-startup>2</load-on-startup> </servlet> <servlet-mapping> <servlet-name>cxf</servlet-name> <url-pattern>/*</url-pattern> </servlet-mapping> <!-- Web Service聲明結束 --> ~~~ 3、resources目錄下,增加applicationContext-cxf.xml,內容如下: ~~~ <?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:jaxws="http://cxf.apache.org/jaxws" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://cxf.apache.org/jaxws http://cxf.apache.org/schemas/jaxws.xsd"> <!-- <import resource="classpath:META-INF/cxf/cxf.xml" /> <import resource="classpath:META-INF/cxf/cxf-servlet.xml" /> --> <jaxws:endpoint implementor="#basicWebService" address="/BasicWebService" /> </beans> ~~~ 4、BasicWebService來的內容大致如下: ~~~ @WebService(name = "BasicWebService", serviceName = "BasicWebService", portName = "BasicWebServicePort", targetNamespace = "http://api.domain.com/ws") @Service public class BasicWebService { @WebMethod public void sendHtmlMail(@WebParam(name = "headName") String headName, @WebParam(name = "sendHtml") String sendHtml) { sendMail.doSendHtmlEmail(headName, sendHtml); } } ~~~ 使用Apache CXF框架,是被Spring容器管理的,也就是說,BasicWebService本身可以設置@Service標記,也可以在BasicWebService中使用@Autowired進行注入。 而其他框架的WebService,比如Jboss直接通過Servlet方式暴露的WebService就不能這樣,只能通過一個SpringContextHolder手動從Spring容器中拿,大致如下: 1、首先在web.xml中增加WebService類的servlet,如下: ~~~ <!-- Web Service聲明開始 --> <servlet> <servlet-name>BasicWebService</servlet-name> <servlet-class>com.xx.BasisWebService</servlet-class> </servlet> <servlet-mapping> <servlet-name>BasicWebService</servlet-name> <url-pattern>/BasicWebService</url-pattern> </servlet-mapping> <!-- Web Service聲明結束 --> ~~~ 2、BasicWebService的內容大致如下: ~~~ @WebService(name = "BasicWebService", serviceName = "BasicWebService", portName = "BasicWebServicePort", targetNamespace = "http://api.sina.com/ws") public class BasicWebService { //這是從Spring容器中拿對象,SpringContextHolder是一個實現了org.springframework.context.ApplicationContextAware的類 private ISystemConfigService systemConfigService = SpringContextHolder.getBean(ISystemConfigService.class); @WebMethod public String test(@WebParam(name = "inputpara") String inputpara) { return inputpara + "_100"; } } ~~~ # Redis Spring可以簡化調用Redis的操作,配置大致如下: 1、pom.xml增加依賴: <dependency> ~~~ <groupId>org.springframework.data</groupId> <artifactId>spring-data-redis</artifactId> <version>1.0.6.RELEASE</version> </dependency> ~~~ 2、resources目錄下,增加applicationContext-redis.xml,內容如下: ~~~ <?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:cache="http://www.springframework.org/schema/cache" xmlns:p="http://www.springframework.org/schema/p" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd"> <description>Spring-cache</description> <cache:annotation-driven/> <bean id="cacheManager" class="org.springframework.data.redis.cache.RedisCacheManager"> <constructor-arg name="template" index="0" ref="redisTemplate"/> </bean> <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig"> <property name="maxActive" value="${redis.pool.maxActive}"/> <property name="maxIdle" value="${redis.pool.maxIdle}"/> <property name="maxWait" value="${redis.pool.maxWait}"/> <property name="testOnBorrow" value="${redis.pool.testOnBorrow}"/> </bean> <!-- 工廠實現: --> <bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory"> <property name="hostName" value="${redis.ip}"/> <property name="port" value="${redis.port}"/> <property name="poolConfig" ref="jedisPoolConfig"/> </bean> <!--模板類: --> <bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate" p:connection-factory-ref="jedisConnectionFactory"> <property name="keySerializer" ref="stringRedisSerializer"/> </bean> <bean id="stringRedisSerializer" class="org.springframework.data.redis.serializer.StringRedisSerializer"/> </beans> ~~~ 3、緩存寫入參考實現: ~~~ @Service public class BrandBaseServiceImpl implements IBrandBaseService { @Override @Cacheable(value = CacheClientConstant.COMMODITY_BRAND_REDIS_CACHE, key = "'commodity:webservice:all:brand:list'") public List<Brand> getAllBrands() { try { List<Brand> brands = brandMapper.getAllBrands(); return brands; } catch (Exception ex) { logger.error(ex.toString()); return null; } } @Override @Cacheable(value = CacheClientConstant.COMMODITY_BRAND_REDIS_CACHE, key = "'commodity:webservice:brand:no:'+#brandNo") public Brand getBrandByNo(String brandNo) { if (StringUtils.isBlank(brandNo)) return null; return brandMapper.getBrandByNo(brandNo); } } ~~~ 4、緩存清除參考實現: ~~~ @Service public class RedisCacheUtil { private final Logger logger = LoggerFactory.getLogger(this.getClass()); @Autowired private RedisTemplate<String,Object> redisTemplate; @Autowired private JedisConnectionFactory jedisConnectionFactory; @CacheEvict(value = CacheClientConstant.COMMODITY_CATEGORY_REDIS_CACHE, key = "'commodity:webservice:category:no:'+#categoryNo") public void cleanCatCacheByNo(String categoryNo) { List<String> keys = new ArrayList<String>(); logger.info("[商品服務端]清理分類categoryNo:{}緩存,REDIS SERVER地址:{}", categoryNo, jedisConnectionFactory.getHostName() + ":" + jedisConnectionFactory.getPort()); if (StringUtils.hasText(categoryNo)) { keys.add("commodity:webservice:category:no:" + categoryNo); cleanAgain(keys); } } @CacheEvict(value = CacheClientConstant.COMMODITY_SYSTEMCONFIG_REDIS_CACHE, allEntries = true) public void cleanSystemConfigAll() { logger.info("[商品服務端]清楚SystemConfig緩存"); } /** * 考慮到主從延遲可能會導致緩存更新失效,延遲再清理一次緩存 * @param keys 需要清除緩存的KEY */ private void cleanAgain(List<String> keys) { if (CollectionUtils.isEmpty(keys)) { return; } for (String key : keys) { logger.info("清理緩存,KEY:{}", key); redisTemplate.delete(key); } } } ~~~ # RabbitMQ Spring也可以簡化使用RabbitMQ的操作,配置大致如下: 1、pom.xml增加依賴: ~~~ <dependency> <groupId>org.springframework.amqp</groupId> <artifactId>spring-amqp</artifactId> <version>${spring.amqp.version}</version> </dependency> <dependency> <groupId>org.springframework.amqp</groupId> <artifactId>spring-rabbit</artifactId> <version>${spring.amqp.version}</version> </dependency> ~~~ 2、發送消息代碼例子: ~~~ @Service public class MessageSendServiceImpl implements IMessageSendService { private static final String EXCHANGE = "amq.topic"; @Autowired private volatile RabbitTemplate rabbitTemplate; private final Logger logger = LoggerFactory.getLogger(this.getClass()); @Override public Boolean sendMessage(String commodityNo) { Commodity c = getCommodity(commodityNo); // 發送rabbitMQ消息(topic) rabbitTemplate.convertAndSend(EXCHANGE, "commodity.update.topic", c); logger.info("發送消息成功(topic):商品編號:" + commodityNo); return true; } } ~~~ 3、resources目錄下,增加applicationContext-rabbitmq.xml,用來配置接收消息,內容如下: ~~~ <?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:rabbit="http://www.springframework.org/schema/rabbit" xmlns:task="http://www.springframework.org/schema/task" 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/rabbit http://www.springframework.org/schema/rabbit/spring-rabbit-1.1.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- 定義rabbitmq連接工廠,生產環境使用集群配置,支持failover,rabbitmq.host=192.168.211.230:5672 --> <rabbit:connection-factory id="connectionFactory" addresses="${rabbitmq.host}" /> <rabbit:admin connection-factory="connectionFactory" /> <rabbit:template id="amqpTemplate" connection-factory="connectionFactory" channel-transacted="true" message-converter="jsonMessageConverter" /> <bean id="jsonMessageConverter" class="org.springframework.amqp.support.converter.JsonMessageConverter"> <property name="classMapper"> <bean class="org.springframework.amqp.support.converter.DefaultClassMapper"> </bean> </property> </bean> <!-- 兩種業務需求: 1. 同一個服務部署在多臺服務器上,如果想消息被一個服務收取,則要配置name,<rabbit:listener 里的queues=這里的name 2. 同一個服務部署在多臺服務器上,如果想消息被所有的服務收取,剛不要配置name,用rabbitmq自動創建的匿名name,這時要去掉這里的name屬性, 并且<rabbit:listener里的queues=這里的id 一般來說,都是第一種業務需求較多 --> <rabbit:queue id="queue的id,可以和name一樣" name="queue的名字,在rabbitmq控制臺可以看到,例如commodity.update.topic.queue"> <rabbit:queue-arguments> <entry key="x-ha-policy" value="all" /> </rabbit:queue-arguments> </rabbit:queue> <!-- CONSUMER --> <!-- 這里的error-handler最好都配置,因為rabbitmq報的異常默認是不被捕獲的,如果這里沒有error-handler,log級別又沒指定到amqp的包,那么錯誤將不會被察覺 --> <rabbit:listener-container connection-factory="connectionFactory" message-converter="jsonMessageConverter" channel-transacted="true" error-handler="rabbitMqErrorHandler" concurrency="10" auto-startup="true"> <rabbit:listener queues="rabbit:queue中定義的name或者id" ref="commodityUpdateListener" method="handleMessage" /> </rabbit:listener-container> <rabbit:topic-exchange name="amq.topic" > <rabbit:bindings> <!-- 這里的queue是<rabbit:queue 里的ID --> <rabbit:binding pattern="發送方的routingKey,對于上面的發送就是commodity.update.topic" queue="queue的名字,在rabbitmq控制臺可以看到,例如commodity.update.topic.queue"/> </rabbit:bindings> </rabbit:topic-exchange> </beans> ~~~ 4、接收消息代碼例子: ~~~ @Component public class CommodityUpdateListener { public void handleMessage(Commodity commodity) { if(commodity==null) { logger.info("XXX"); return; } //處理邏輯 } } ~~~ 5、處理消息錯誤代碼例子: ~~~ @Component public class RabbitMqErrorHandler implements ErrorHandler { private static Logger logger = LoggerFactory.getLogger(RabbitMqErrorHandler.class); @Override public void handleError(Throwable t) { logger.error("Receive rabbitmq message error:{}", t); } } ~~~ # MyBatis Spring可以大大簡化使用MyBatis這種ORM框架,定義出接口和Mapper文件之后,Spring可以自動幫我們生成實現類。我曾經在DotNet框架下使用過MyBatis.Net,所有的Mapper的實現類都需要手工寫代碼,而Spring幫我節省了很多編碼工作量。 大致配置步驟如下: 1、pom.xml增加依賴: ~~~ <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.1.1</version> </dependency> <dependency> <groupId>org.mybatis.caches</groupId> <artifactId>mybatis-ehcache</artifactId> <version>1.0.1</version> </dependency> ~~~ 2、resources目錄下,applicationContext.xml中,一般放置關于mybatis的配置,內容如下: ~~~ <?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:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context" xmlns:task="http://www.springframework.org/schema/task" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd"> <description>Spring公共配置</description> <!--開啟注解 --> <context:annotation-config /> <!-- 開啟自動切面代理 --> <aop:aspectj-autoproxy /> <context:component-scan base-package="com.xx"> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" /> </context:component-scan> <!-- 定義受環境影響易變的變量 --> <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE" /> <property name="ignoreResourceNotFound" value="true" /> <property name="locations"> <list> <!-- 標準配置 --> <value>classpath*:/application.properties</value> <value>classpath*:/config.properties</value> <!-- 本地開發環境配置 --> <value>file:/d:/conf/pcconf/*.properties</value> <!-- 服務器生產環境配置 --> <value>file:/etc/conf/pcconf/*.properties</value> </list> </property> <!--property name="ignoreUnresolvablePlaceholders" value="true" / --> </bean> <tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true" /> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSourcejdbc"/> </bean> <!-- 強烈建議用JdbcTemplate代替JdbcUtils --> <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate"> <property name="dataSource" ref="dataSourcejdbc" /> </bean> <bean id="sqlSessionFactoryWrite" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSourcejdbc" /> </bean> <!-- 會自動將basePackage中配置的包路徑下的所有帶有@Mapper標注的Dao層的接口生成代理,替代原來我們的Dao實現。 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="sqlSessionFactory" ref="sqlSessionFactoryWrite" /> <property name="basePackage" value="com/xx/pc/template" /> </bean> <beans profile="production"> <bean id="dataSourcejdbc" class="org.springframework.jndi.JndiObjectFactoryBean"> <property name="jndiName" value="java:/MySqlDS_JDBC" /> </bean> </beans> <beans profile="dev"> <bean id="dataSourcejdbc" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver"/> <property name="url" value="jdbc:mysql://ip:3306/dbname?characterEncoding=utf-8"/> <property name="username" value="root"/> <property name="password" value="root"/> </bean> </beans> </beans> ~~~ 3、定義接口,及在src/main/resource對應接口的包路徑下定義同名的xml配置文件即可。 Spring初始化完畢后,會自動幫我們生成Mapper的實現類。
                  <ruby id="bdb3f"></ruby>

                  <p id="bdb3f"><cite id="bdb3f"></cite></p>

                    <p id="bdb3f"><cite id="bdb3f"><th id="bdb3f"></th></cite></p><p id="bdb3f"></p>
                      <p id="bdb3f"><cite id="bdb3f"></cite></p>

                        <pre id="bdb3f"></pre>
                        <pre id="bdb3f"><del id="bdb3f"><thead id="bdb3f"></thead></del></pre>

                        <ruby id="bdb3f"><mark id="bdb3f"></mark></ruby><ruby id="bdb3f"></ruby>
                        <pre id="bdb3f"><pre id="bdb3f"><mark id="bdb3f"></mark></pre></pre><output id="bdb3f"></output><p id="bdb3f"></p><p id="bdb3f"></p>

                        <pre id="bdb3f"><del id="bdb3f"><progress id="bdb3f"></progress></del></pre>

                              <ruby id="bdb3f"></ruby>

                              哎呀哎呀视频在线观看