用springcontextutil實現applicationcontextaware
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package util;import java.util.locale;import org.springframework.beans.beansexception;import org.springframework.context.applicationcontext;import org.springframework.context.applicationcontextaware;public class springcontextutil implements applicationcontextaware{ private static applicationcontext context; @override public void setapplicationcontext(applicationcontext contex) throws beansexception { system.out.println("--------------------contex---------"+contex); springcontextutil.context = contex; } public static applicationcontext getapplicationcontext() { return context; } public static object getbean(string beanname) { return context.getbean(beanname); } public static string getmessage(string key) { return context.getmessage(key, null, locale.getdefault()); }} |
工具類
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package redis;import redis.clients.jedis.jedispool;import util.springcontextutil;public class redisutil { private static jedispool jedispool; static{ jedispool = (jedispool)springcontextutil.getbean("jedispool"); } public static jedispool getjedispool(){ if(jedispool == null){ jedispool = (jedispool)springcontextutil.getbean("jedispool"); } return jedispool; } public void flusdb(){ jedispool.getresource().flushdb(); } public static string set(string key,string value){ return jedispool.getresource().set(key, value); } public static string get(string key){ return jedispool.getresource().get(key); } public static long del(string key){ return jedispool.getresource().del(key); }} |
在spring的配置文件中配置這個類，spring容器會在加載完spring容器后把上下文對象調用這個對象中的setapplicationcontext方法
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<!--1 自動掃描 將標注spring注解的類自動轉化bean--> <context:component-scan base-package="com.first,com.util" /> <!--2 加載數據資源屬性文件 --> <bean id="propertyconfigurer" class="org.springframework.beans.factory.config.propertyplaceholderconfigurer"> <property name="locations"> <list> <value>classpath:jdbc.properties</value> <value>classpath:redis.properties</value> </list> </property> </bean> <bean id="springcontextutil" class="util.springcontextutil"></bean> <import resource="redis-config.xml"/>在web項目中的web.xml中配置加載spring容器的listener<!-- 初始化spring容器，讓spring容器隨web應用的啟動而自動啟動 --> <listener> <listener-class>org.springframework.web.context.contextloaderlistener</listener-class> </listener> |
spring配置文件注入bean類
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<bean id="jedispoolconfig" class="redis.clients.jedis.jedispoolconfig"> <property name="maxidle" value="300" /> <!-- 最大能夠保持idel狀態的對象數 --> <property name="testonborrow" value="true" /> <!-- 當調用borrow object方法時，是否進行有效性檢查 --> <property name="maxactive" value="200" /> <property name="minidle" value="10"/> <property name="maxwait" value="300" /> <property name="testonreturn" value="true" /> <property name="testwhileidle" value="true" /> </bean> <bean id="jedispool" class="redis.clients.jedis.jedispool"> <constructor-arg name="poolconfig" ref="jedispoolconfig" /> <constructor-arg name="host" value="${redis_addr}" /> <constructor-arg name="port" value="${redis_port}" type="int" /> <constructor-arg name="timeout" value="${redis_timeout}" type="int" /> <constructor-arg name="password" value="#{'${redis_password}'!=''?'${redis_password}':null}" /> <constructor-arg name="database" value="${redis_db_index}" type="int" /> </bean> |
總結
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