package com.bjsxt.dao;import org.springframework.data.jpa.repository.JpaRepository;import com.bjsxt.pojo.Users;
/*** 参数一 T :当前需要映射的实体* 参数二 ID :当前映射的实体中的OID的类型**/
public interface UsersRepository extends JpaRepository<Users,Integer>{}

package com.bjsxt.pojo;import java.io.Serializable;import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;@Entity
@Table(name="t_users")
public class Users implements Serializable {@Id@GeneratedValue(strategy=GenerationType.IDENTITY)@Column(name="id")private Integer id;@Column(name="name")private String name;@Column(name="age")private Integer age;@Column(name="address")private String address;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 Integer getAge() {return age;}public void setAge(Integer age) {this.age = age;}public String getAddress() {return address;}public void setAddress(String address) {this.address = address;}@Overridepublic String toString() {return "Users [id=" + id + ", name=" + name + ", age=" + age + ", address=" + address + "]";}
}

package com.bjsxt.service.impl;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.stereotype.Service;import com.bjsxt.dao.UsersRepository;
import com.bjsxt.pojo.Users;
import com.bjsxt.service.UsersService;
/*** UsersService接口实现类***/
@Service
public class UsersServiceImpl implements UsersService {@Autowiredprivate UsersRepository usersRepository;@Override@Cacheable(value="users")public List<Users> findUserAll() {return this.usersRepository.findAll();}@Override//@Cacheable:对当前查询的对象做缓存处理@Cacheable(value="users")public Users findUserById(Integer id) {return this.usersRepository.findOne(id);}@Override@Cacheable(value="users",key="#pageable.pageSize")public Page<Users> findUserByPage(Pageable pageable) {return this.usersRepository.findAll(pageable);}@Override//@CacheEvict(value="users",allEntries=true) 清除缓存中以users缓存策略缓存的对象@CacheEvict(value="users",allEntries=true)public void saveUsers(Users users) {this.usersRepository.save(users);}}

package com.bjsxt;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cache.annotation.EnableCaching;@SpringBootApplication
@EnableCaching
public class App {public static void main(String[] args) {SpringApplication.run(App.class, args);}
}

spring.datasource.driverClassName=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/orcl
spring.datasource.username=root
spring.datasource.password=123456spring.datasource.type=com.alibaba.druid.pool.DruidDataSourcespring.jpa.hibernate.ddl-auto=update
spring.jpa.show-sql=truespring.cache.ehcache.cofnig=ehcache.xml

<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../config/ehcache.xsd"><diskStore path="java.io.tmpdir"/><!--defaultCache:echcache的默认缓存策略  --><defaultCachemaxElementsInMemory="10000"eternal="false"timeToIdleSeconds="120"timeToLiveSeconds="120"maxElementsOnDisk="10000000"diskExpiryThreadIntervalSeconds="120"memoryStoreEvictionPolicy="LRU"><persistence strategy="localTempSwap"/></defaultCache><!-- 自定义缓存策略 --><cache name="users"maxElementsInMemory="10000"eternal="false"timeToIdleSeconds="120"timeToLiveSeconds="120"maxElementsOnDisk="10000000"diskExpiryThreadIntervalSeconds="120"memoryStoreEvictionPolicy="LRU"><persistence strategy="localTempSwap"/></cache>
</ehcache>

package com.bjsxt.test;import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;import com.bjsxt.App;
import com.bjsxt.pojo.Users;
import com.bjsxt.service.UsersService;/*** UsersService测试***/
@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest(classes=App.class)
public class UsersServiceTest {@Autowiredprivate UsersService usersService;@Testpublic void testFindUserById(){//第一次查询System.out.println(this.usersService.findUserById(1));//第二次查询System.out.println(this.usersService.findUserById(1));}@Testpublic void testFindUserByPage(){Pageable pageable = new PageRequest(0, 2);//第一次查询System.out.println(this.usersService.findUserByPage(pageable).getTotalElements());//第二次查询System.out.println(this.usersService.findUserByPage(pageable).getTotalElements());//第三次查询pageable = new PageRequest(1, 2);System.out.println(this.usersService.findUserByPage(pageable).getTotalElements());}@Testpublic void testFindAll(){//第一次查询System.out.println(this.usersService.findUserAll().size());Users users = new Users();users.setAddress("南京");users.setAge(43);users.setName("朱七");this.usersService.saveUsers(users);//第二次查询System.out.println(this.usersService.findUserAll().size());}
}

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>1.5.10.RELEASE</version></parent><groupId>com.bjsxt</groupId><artifactId>23-spring-boot-ehcache</artifactId><version>0.0.1-SNAPSHOT</version><properties><java.version>1.7</java.version><thymeleaf.version>3.0.2.RELEASE</thymeleaf.version><thymeleaf-layout-dialect.version>2.0.4</thymeleaf-layout-dialect.version></properties><dependencies><!-- springBoot的启动器 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><!-- springBoot的启动器 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-thymeleaf</artifactId></dependency><!-- springBoot的启动器 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-jpa</artifactId></dependency><!-- 测试工具的启动器 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId></dependency><!-- mysql --><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId></dependency><!-- druid连接池 --><dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>1.0.9</version></dependency><!-- Spring Boot缓存支持启动器 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-cache</artifactId></dependency><!-- Ehcache坐标 --><dependency><groupId>net.sf.ehcache</groupId><artifactId>ehcache</artifactId></dependency></dependencies>
</project>