spring整合ehcache 注解实现查询缓存，并实现实时缓存更新或删除

写在前面：上一篇博客写了spring cache和ehcache的基本介绍，个人建议先把这些最基本的知识了解了才能对今天主题有所感触。不多说了，开干！

注：引入jar

        <!-- 引入ehcache缓存 -->
        <dependency>
            <groupId>net.sf.ehcache</groupId>
            <artifactId>ehcache</artifactId>
            <version>2.8.3</version>
        </dependency>

 

第一步：首先配置ehcache.xml

<?xml version="1.0" encoding="UTF-8"?>
<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="ehcache.xsd"
         updateCheck="true" monitoring="autodetect"
         dynamicConfig="true">
    
   <diskStore path="java.io.tmpdir"/>    
   <defaultCache
            maxEntriesLocalHeap="10000"
            eternal="false"
            overflowToDisk="false" 
            timeToIdleSeconds="120"
            timeToLiveSeconds="120"
            diskSpoolBufferSizeMB="30"
            maxEntriesLocalDisk="10000000"
            diskExpiryThreadIntervalSeconds="120"
            memoryStoreEvictionPolicy="LRU">
        <persistence strategy="localTempSwap"/>
    </defaultCache>
   
    <cache name="myCache"
           maxEntriesLocalHeap="10000"
           maxEntriesLocalDisk="1000"
           eternal="false"
           diskSpoolBufferSizeMB="30"
           timeToIdleSeconds="300"
           timeToLiveSeconds="600"
           memoryStoreEvictionPolicy="LFU"
           transactionalMode="off">
        <persistence strategy="localTempSwap"/>
    </cache>   
</ehcache>

第二步：在spring.xml的配置文件中引入schema， 

      xmlns:aop="http://www.springframework.org/schema/aop"和http://www.springframework.org/schema/cache  http://www.springframework.org/schema/cache/spring-cache-3.2.xsd

      缓存的配置：

    <!-- 启用缓存注解功能，这个是必须的，否则注解不会生效，另外，该注解一定要声明在spring主配置文件中才会生效 -->
    <cache:annotation-driven cache-manager="ehcacheManager"/>
    
    <!-- cacheManager工厂类，指定ehcache.xml的位置 -->
    <bean >
         <property name="configLocation" value="classpath:ehcache.xml" />
    </bean>
    <!-- 声明cacheManager -->
    <bean >
         <property name="cacheManager" ref="ehcacheManagerFactory" />
    </bean>

OK!缓存的相关配置已经完成。下面开始编写测试程序。这里需要连接数据库，我就不写了。这里为了方便就随便找了之前写过的model，这个model就是AOP注解实现日志管理的实体，为了偷懒就直接用了，希望你们不要误解，没有特殊意义的

第三步：编写model，这里需要注意，要实现缓存的实体必须要序列化 private static final long serialVersionUID = -6579533328390250520L;  关于序列化的生成这里就不介绍了，大家可以百度看看。

package org.shop.entity;

import java.io.Serializable;
import java.util.Date;

public class SystemLog implements Serializable {
 
    private static final long serialVersionUID = -6579533328390250520L;

    private String id;

    private String description;

    private String method;

    private Long logType;

    private String requestIp;

    private String exceptioncode;

    private String exceptionDetail;

    private String params;

    private String createBy;

    private Date createDate;

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id == null ? null : id.trim();
    }

    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description == null ? null : description.trim();
    }

    public String getMethod() {
        return method;
    }

    public void setMethod(String method) {
        this.method = method == null ? null : method.trim();
    }

    public Long getLogType() {
        return logType;
    }

    public void setLogType(Long logType) {
        this.logType = logType;
    }

    public String getRequestIp() {
        return requestIp;
    }

    public void setRequestIp(String requestIp) {
        this.requestIp = requestIp == null ? null : requestIp.trim();
    }

    public String getExceptioncode() {
        return exceptioncode;
    }

    public void setExceptioncode(String exceptioncode) {
        this.exceptioncode = exceptioncode == null ? null : exceptioncode.trim();
    }

    public String getExceptionDetail() {
        return exceptionDetail;
    }

    public void setExceptionDetail(String exceptionDetail) {
        this.exceptionDetail = exceptionDetail == null ? null : exceptionDetail.trim();
    }

    public String getParams() {
        return params;
    }

    public void setParams(String params) {
        this.params = params == null ? null : params.trim();
    }

    public String getCreateBy() {
        return createBy;
    }

    public void setCreateBy(String createBy) {
        this.createBy = createBy == null ? null : createBy.trim();
    }

    public Date getCreateDate() {
        return createDate;
    }

    public void setCreateDate(Date createDate) {
        this.createDate = createDate;
    }
}

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