spring整合hibernate+ehcache实现最简单的入门代码demo实例，对初学者很有帮助

学习如何在hibernate中配置二级缓存ehcache

项目截图：

运行com.zuidaima.hibernate.main.HibernateEHCacheMain.java后输出：

Stats enabled=false
Stats enabled=true
***** 0 *****
Fetch Count=0
Second Level Hit Count=0
Second Level Miss Count=0
Second Level Put Count=0
Hibernate: select employee0_.emp_id as emp_id1_1_0_, employee0_.emp_name as emp_name2_1_0_, employee0_.emp_salary as emp_sala3_1_0_, address1_.emp_id as emp_id1_0_1_, address1_.address_line1 as address_2_0_1_, address1_.city as city3_0_1_, address1_.zipcode as zipcode4_0_1_ from EMPLOYEE employee0_ left outer join ADDRESS address1_ on employee0_.emp_id=address1_.emp_id where employee0_.emp_id=?
1:: Name=1, Zipcode=1
***** 1 *****
Fetch Count=1
Second Level Hit Count=0
Second Level Miss Count=1
Second Level Put Count=2
2:: Name=1, Zipcode=1
***** 2 *****
Fetch Count=1
Second Level Hit Count=0
Second Level Miss Count=1
Second Level Put Count=2
Hibernate: select employee0_.emp_id as emp_id1_1_0_, employee0_.emp_name as emp_name2_1_0_, employee0_.emp_salary as emp_sala3_1_0_, address1_.emp_id as emp_id1_0_1_, address1_.address_line1 as address_2_0_1_, address1_.city as city3_0_1_, address1_.zipcode as zipcode4_0_1_ from EMPLOYEE employee0_ left outer join ADDRESS address1_ on employee0_.emp_id=address1_.emp_id where employee0_.emp_id=?
3:: Name=1, Zipcode=1
***** 3 *****
Fetch Count=2
Second Level Hit Count=0
Second Level Miss Count=2
Second Level Put Count=3
Hibernate: select employee0_.emp_id as emp_id1_1_0_, employee0_.emp_name as emp_name2_1_0_, employee0_.emp_salary as emp_sala3_1_0_, address1_.emp_id as emp_id1_0_1_, address1_.address_line1 as address_2_0_1_, address1_.city as city3_0_1_, address1_.zipcode as zipcode4_0_1_ from EMPLOYEE employee0_ left outer join ADDRESS address1_ on employee0_.emp_id=address1_.emp_id where employee0_.emp_id=?
4:: Name=3, Zipcode=3
***** 4 *****
Fetch Count=3
Second Level Hit Count=0
Second Level Miss Count=3
Second Level Put Count=5
Hibernate: select employee0_.emp_id as emp_id1_1_0_, employee0_.emp_name as emp_name2_1_0_, employee0_.emp_salary as emp_sala3_1_0_, address1_.emp_id as emp_id1_0_1_, address1_.address_line1 as address_2_0_1_, address1_.city as city3_0_1_, address1_.zipcode as zipcode4_0_1_ from EMPLOYEE employee0_ left outer join ADDRESS address1_ on employee0_.emp_id=address1_.emp_id where employee0_.emp_id=?
5:: Name=1, Zipcode=1
***** 5 *****
Fetch Count=4
Second Level Hit Count=0
Second Level Miss Count=4
Second Level Put Count=6

数据库建库语句：

create database test;

use test;

SET FOREIGN_KEY_CHECKS=0;
-- ----------------------------
-- Table structure for `address`
-- ----------------------------
DROP TABLE IF EXISTS `address`;
CREATE TABLE `address` (
  `emp_id` bigint(20) NOT NULL,
  `address_line1` varchar(255) DEFAULT NULL,
  `city` varchar(255) DEFAULT NULL,
  `zipcode` varchar(255) DEFAULT NULL,
  PRIMARY KEY (`emp_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

-- ----------------------------
-- Records of address
-- ----------------------------
INSERT INTO address VALUES ('1', '1', '1', '1');
INSERT INTO address VALUES ('3', '3', '3', '3');


-- ----------------------------
-- Records of article
-- ----------------------------
INSERT INTO article VALUES ('1', 'test', 'test', null);

-- ----------------------------
-- Table structure for `employee`
-- ----------------------------
DROP TABLE IF EXISTS `employee`;
CREATE TABLE `employee` (
  `emp_id` bigint(20) NOT NULL AUTO_INCREMENT,
  `emp_name` varchar(255) DEFAULT NULL,
  `emp_salary` double DEFAULT NULL,
  PRIMARY KEY (`emp_id`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;

-- ----------------------------
-- Records of employee
-- ----------------------------
INSERT INTO employee VALUES ('1', '1', '1');
INSERT INTO employee VALUES ('3', '3', '3');

参考地址：http://www.journaldev.com/2980/hibernate-ehcache-second-level-caching-example-tutorial