緩存&Log4j

<!-- redis -->  
        <dependency>  
            <groupId>org.springframework.data</groupId>  
            <artifactId>spring-data-redis</artifactId>  
            <version>1.3.4.RELEASE</version>  
        </dependency>  

        <dependency>  
            <groupId>redis.clients</groupId>  
            <artifactId>jedis</artifactId>  
            <version>2.5.2</version>  
        </dependency>  

applicationContext-cache-redis.xml

<context:property-placeholder
        location="classpath:/config/properties/redis.properties" />

    <!-- 啓用緩存註解功能，這個是必須的，否則註解不會生效，另外，該註解一定要聲明在spring主配置文件中才會生效 -->
    <cache:annotation-driven cache-manager="cacheManager" />

    <!-- spring自己的換管理器，這裏定義了兩個緩存位置名稱 ，既註解中的value -->
    <bean id="cacheManager" class="org.springframework.cache.support.SimpleCacheManager">
        <property name="caches">
            <set>
                <bean class="org.cpframework.cache.redis.RedisCache">
                    <property name="redisTemplate" ref="redisTemplate" />
                    <property name="name" value="default"/>
                </bean>
                <bean class="org.cpframework.cache.redis.RedisCache">
                    <property name="redisTemplate" ref="redisTemplate02" />
                    <property name="name" value="commonCache"/>
                </bean>
            </set>
        </property>
    </bean>

    <!-- redis 相關配置 -->
    <bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig">
        <property name="maxIdle" value="${redis.maxIdle}" />       
        <property name="maxWaitMillis" value="${redis.maxWait}" />
        <property name="testOnBorrow" value="${redis.testOnBorrow}" />
    </bean>

    <bean id="connectionFactory"
        class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory"
        p:host-name="${redis.host}" p:port="${redis.port}" p:pool-config-ref="poolConfig"
        p:database="${redis.database}" />

    <bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
        <property name="connectionFactory" ref="connectionFactory" />
    </bean>

    <bean id="connectionFactory02"
        class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory"
        p:host-name="${redis.host}" p:port="${redis.port}" p:pool-config-ref="poolConfig"
        p:database="${redis.database}" />

    <bean id="redisTemplate02" class="org.springframework.data.redis.core.RedisTemplate">
        <property name="connectionFactory" ref="connectionFactory02" />
    </bean>

redis.properties

# Redis settings  
# server IP
redis.host=192.168.xx.xx
# server port
redis.port=6379   
# use dbIndex
redis.database=0
# 控制一個pool最多有多少個狀態爲idle(空閒的)的jedis實例
redis.maxIdle=300  
# 表示當borrow(引入)一個jedis實例時，最大的等待時間，如果超過等待時間(毫秒)，則直接拋出JedisConnectionException；
redis.maxWait=3000  
# 在borrow一個jedis實例時，是否提前進行validate操作；如果爲true，則得到的jedis實例均是可用的
redis.testOnBorrow=true  

RedisCache.java

package org.cpframework.cache.redis;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

import org.springframework.cache.Cache;
import org.springframework.cache.support.SimpleValueWrapper;
import org.springframework.dao.DataAccessException;
import org.springframework.data.redis.connection.RedisConnection;
import org.springframework.data.redis.core.RedisCallback;
import org.springframework.data.redis.core.RedisTemplate;


public class RedisCache implements Cache {

    private RedisTemplate<String, Object> redisTemplate;
    private String name;

    public RedisTemplate<String, Object> getRedisTemplate() {
        return redisTemplate;
    }

    public void setRedisTemplate(RedisTemplate<String, Object> redisTemplate) {
        this.redisTemplate = redisTemplate;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String getName() {
        // TODO Auto-generated method stub
        return this.name;
    }

    @Override
    public Object getNativeCache() {
        // TODO Auto-generated method stub
        return this.redisTemplate;
    }

    @Override
    public ValueWrapper get(Object key) {
        // TODO Auto-generated method stub
        final String keyf = (String) key;
        Object object = null;
        object = redisTemplate.execute(new RedisCallback<Object>() {
            public Object doInRedis(RedisConnection connection)
                    throws DataAccessException {

                byte[] key = keyf.getBytes();
                byte[] value = connection.get(key);
                if (value == null) {
                    return null;
                }
                return toObject(value);

            }
        });
        return (object != null ? new SimpleValueWrapper(object) : null);
    }

    @Override
    public void put(Object key, Object value) {
        // TODO Auto-generated method stub
        final String keyf = (String) key;
        final Object valuef = value;
        final long liveTime = 86400;

        redisTemplate.execute(new RedisCallback<Long>() {
            public Long doInRedis(RedisConnection connection)
                    throws DataAccessException {
                byte[] keyb = keyf.getBytes();
                byte[] valueb = toByteArray(valuef);
                connection.set(keyb, valueb);
                if (liveTime > 0) {
                    connection.expire(keyb, liveTime);
                }
                return 1L;
            }
        });
    }

    /**
     * 描述 : <Object轉byte[]>. <br>
     * <p>
     * <使用方法說明>
     * </p>
     * 
     * @param obj
     * @return
     */
    private byte[] toByteArray(Object obj) {
        byte[] bytes = null;
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        try {
            ObjectOutputStream oos = new ObjectOutputStream(bos);
            oos.writeObject(obj);
            oos.flush();
            bytes = bos.toByteArray();
            oos.close();
            bos.close();
        } catch (IOException ex) {
            ex.printStackTrace();
        }
        return bytes;
    }

    /**
     * 描述 : <byte[]轉Object>. <br>
     * <p>
     * <使用方法說明>
     * </p>
     * 
     * @param bytes
     * @return
     */
    private Object toObject(byte[] bytes) {
        Object obj = null;
        try {
            ByteArrayInputStream bis = new ByteArrayInputStream(bytes);
            ObjectInputStream ois = new ObjectInputStream(bis);
            obj = ois.readObject();
            ois.close();
            bis.close();
        } catch (IOException ex) {
            ex.printStackTrace();
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        }
        return obj;
    }

    @Override
    public void evict(Object key) {
        // TODO Auto-generated method stub
        final String keyf = (String) key;
        redisTemplate.execute(new RedisCallback<Long>() {
            public Long doInRedis(RedisConnection connection)
                    throws DataAccessException {
                return connection.del(keyf.getBytes());
            }
        });
    }

    @Override
    public void clear() {
        // TODO Auto-generated method stub
        redisTemplate.execute(new RedisCallback<String>() {
            public String doInRedis(RedisConnection connection)
                    throws DataAccessException {
                connection.flushDb();
                return "ok";
            }
        });
    }

}

下載相應的jar包（log4j.jar）

首先是web.xml的配置，在web.xml中加入如下配置

  <context-param>     
      <param-name>log4jConfigLocation</param-name>     
      <param-value>/WEB-INF/props/log4j.properties</param-value>     
   </context-param>     
   <context-param>     
      <param-name>     log4jRefreshInterval</param-name>     
      <param-value>6000</param-value>     
   </context-param>
    <listener> 
      <listener-class> 
         org.springframework.web.util.Log4jConfigListener 
      </listener-class> 
   </listener>

log4j.properties

log4j.rootLogger=INFO, stdout, logfile
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - <%m>%n
log4j.appender.logfile=org.apache.log4j.RollingFileAppender
log4j.appender.logfile.File=/webserver/specialTraining3/wangzj.log
log4j.appender.logfile.MaxFileSize=51200KB
log4j.appender.logfile.MaxBackupIndex=3
log4j.appender.logfile.layout=org.apache.log4j.PatternLayout
log4j.appender.logfile.layout.ConversionPattern=%d %p [%c] - <%m>%n