昨天在尝试测试ehcache的持久化 过程中，遇到了写问题。
今天突然想明白，顺便过来记录一下
（ehcache持久化的 对象 必须是可序列化的）
持久化到硬盘的对象都需要是可序列化的，用以下方法处理： a)如果类是你自己的，把他设置成可序列化 b)如果类中的某些属性是是第三方jar包的类，可以将它的字段设置成transient(不需序列化） c)如果类中的某些属性是是第三方jar包但你一定要将所有属性都序列化，可以考虑将这些属性转化成json等
现将代码黏贴至此：
持久化对象：
public class Person implements Serializable { private static final long serialVersionUID = -7441447303797910095L; private Integer id; private String name; private int age; private String gender; public Person() { super(); } public Person(Integer id, String name, int age, String gender) { super(); this.id = id; this.name = name; this.age = age; this.gender = gender; } public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public String getGender() { return gender; } public void setGender(String gender) { this.gender = gender; } @Override public String toString() { return "Person [id=" + id + ", name=" + name + ", age=" + age + ", gender=" + gender + "]"; }} ehcache.xml配置
测试代码：
package com.lee.ehcache.test;import org.junit.Test;import net.sf.ehcache.Cache;import net.sf.ehcache.CacheManager;import net.sf.ehcache.Element;public class EhcacheTest { /** * 五、Disk persistence * 获取从disk上的数据 */ @Test public void testDiskPersist2() { String cacheName = "sample"; CacheManager cm = new CacheManager("src/main/resources/ehcache_1.xml"); Cache cache = cm.getCache(cacheName); long memeryStoreSize = cache.getMemoryStoreSize(); long diskStoreSize = cache.getDiskStoreSize(); System.out.println(memeryStoreSize); System.out.println(diskStoreSize); System.out.println("********************"); for(int i=1;i<50;i++) { Element ele = cache.get("key"+i); System.out.println(ele); } cm.shutdown(); } /** * 四、Disk persistence */ @Test public void testDiskPersist() { String cacheName = "sample"; CacheManager cm = new CacheManager("src/main/resources/ehcache_1.xml"); Cache cache = cm.getCache(cacheName); System.out.println(cache); for (int i = 0; i < 5000; i++) { Element ele = new Element("key"+i, new Person(i, "lee"+i, 20+i, "male")); cache.put(ele); } cache.flush(); System.out.println(cache.getMemoryStoreSize()); System.out.println(cache.getDiskStoreSize()); cm.shutdown(); } /** * 三、crud */ @Test public void testCRUD() { String cacheName = "sample"; CacheManager cm = new CacheManager("src/main/resources/ehcache_1.xml"); Cache cache = cm.getCache(cacheName); //put an element into cache Element ele1 = new Element("k1", new Person(1, "lee", 20, "male"));//element 存储 缓存对象和 存在时间 、设置时间、 更新时间等信息 cache.put(ele1); Element ele2 = new Element("k2", new Person(1, "taty", 2, "female")); cache.put(ele2); Element res1 = cache.get("k1"); System.out.println(res1); if(res1!=null) { String pk1 = (String) res1.getObjectKey(); Person pv1 = (Person) res1.getObjectValue(); System.out.println("pre:"+pk1+"----"+pv1); } System.out.println("***********************"); //移除 缓存 cache.remove("k1"); Element afres1 = cache.get("k1"); System.out.println(afres1); if(afres1!=null) { String afpk1 = (String) afres1.getObjectKey(); Person afpv1 = (Person) afres1.getObjectValue(); System.out.println("after:"+afpk1+"----"+afpv1); } } /** * 二、cache */ @Test public void testCache() { String cacheName = "sample"; CacheManager cm = new CacheManager("src/main/resources/ehcache_1.xml"); Cache cache = cm.getCache(cacheName); System.out.println(cache); } /** * 一、cacheManager */ @Test public void testCacheManeger() { //1、// CacheManager cm = CacheManager.getInstance(); //2、// CacheManager cm = new CacheManager("src/main/resources/ehcache_1.xml");// // String[] cacheNames = cm.getCacheNames();// System.out.println(cacheNames.length);// for(String name : cacheNames) {// System.out.println(name);// } //3、 CacheManager cm = CacheManager.create(); cm.addCache("lee"); Cache cache = cm.getCache("lee"); System.out.println(cache); //移除cache cm.removeCache("lee"); System.out.println(cache.getStatus()); //关闭cacheManager cm.shutdown(); } } 运行第四个 和第五个方法：
