spring boot之EhCache

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一、添加jar包

<!-- caching -->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-cache</artifactId>
</dependency>
<dependency>
    <groupId>net.sf.ehcache</groupId>
    <artifactId>ehcache</artifactId>
</dependency>

二、添加缓存配置

#cache
spring.cache.type=ehcache
spring.cache.ehcache.config=classpath:config/ehcache.xml

<?xml version="1.0" encoding="UTF-8"?>
<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:noNamespaceSchemaLocation="http://ehcache.org/ehcache.xsd"
    updateCheck="false">

    <diskStore path="java.io.tmpdir/Tmp_EhCache" />

    <defaultCache
        eternal="false"
        maxElementsInMemory="1000"
        overflowToDisk="false"
        diskPersistent="false"
        timeToIdleSeconds="0"
        timeToLiveSeconds="0"
        memoryStoreEvictionPolicy="LRU" />

    <cache name="ehCache"  
        eternal="false"
        maxElementsInMemory="1000"
        overflowToDisk="false"
        diskPersistent="false"
        timeToIdleSeconds="0"
        timeToLiveSeconds="0"
        memoryStoreEvictionPolicy="LRU" />

</ehcache>

三、启动缓存

@EnableCaching

四、使用缓存

package com.drunck.service.impl;

import javax.annotation.Resource;

import org.springframework.cache.annotation.CacheConfig;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.CachePut;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Repository;

import com.drunck.domain.SysAdmin;
import com.drunck.mapper.SysAdminMapper;
import com.drunck.service.CacheService;

@CacheConfig(cacheNames = "ehCache")
@Repository
public class CacheServiceImpl implements CacheService {
    @Resource
    private SysAdminMapper sysAdminMapper;

    @CachePut(key = "'key_'+#sysAdmin.getId()")
    @Override
    public SysAdmin save(SysAdmin sysAdmin) {
        SysAdmin admin = new SysAdmin();
        admin.setId(sysAdmin.getId());
        admin.setUserName(sysAdmin.getUserName());
        return admin;
    }

    @CachePut(key = "'key_'+#sysAdmin.getId()")
    @Override
    public SysAdmin update(SysAdmin sysAdmin) {
        SysAdmin admin = new SysAdmin();
        admin.setId(sysAdmin.getId());
        admin.setUserName(sysAdmin.getUserName());
        return admin;
    }

    @Cacheable(key = "'key_'+#id")
    @Override
    public SysAdmin queryById(String id) {
        System.out.println("查询功能，缓存找不到，直接读库, id=" + id);
        return sysAdminMapper.selectByPrimaryKey(id);
    }

    @CacheEvict(key = "'key_'+#id")
    @Override
    public void deleteById(String id) {
    }

}