如何缓存83版射雕英雄传演员表83版

来源：蜘蛛抓取(WebSpider) 时间：2016-08-10 14:41 标签： 射雕英雄传83版国语
一、创建数据库
1.1、建立数据库
SQLyog Enterprise v12.09 (64 bit)
MySQL - 5.7.9-log : Database - mybatis
*********************************************************************
/*!40101 SET NAMES utf8 */;
/*!40101 SET SQL_MODE=''*/;
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;
CREATE DATABASE /*!32312 IF NOT EXISTS*/`mybatis` /*!40100 DEFAULT CHARACTER SET utf8 */;
USE `mybatis`;
/*Table structure for table `author` */
DROP TABLE IF EXISTS `author`;
CREATE TABLE `author` (
`author_id` int(11) unsigned NOT NULL AUTO_INCREMENT COMMENT '作者ID主键',
`author_username` varchar(30) NOT NULL COMMENT '作者用户名',
`author_password` varchar(32) NOT NULL COMMENT '作者密码',
`author_email` varchar(50) NOT NULL COMMENT '作者邮箱',
`author_bio` varchar(1000) DEFAULT '这家伙很赖，什么也没留下' COMMENT '作者简介',
`register_time` datetime DEFAULT CURRENT_TIMESTAMP COMMENT '注册时间',
PRIMARY KEY (`author_id`)
) ENGINE=InnoDB AUTO_INCREMENT=11 DEFAULT CHARSET=utf8;
/*Data for the table `author` */
into `author`(`author_id`,`author_username`,`author_password`,`author_email`,`author_bio`,`register_time`) values (1,'张三','123456','','张三是个新手，刚开始注册',' 10:23:59'),(2,'李四','123asf','','魂牵梦萦 ',' 10:24:29'),(3,'王五','dfsd342','','康熙王朝',' 10:25:23'),(4,'赵六','123098sdfa','','花午骨',' 10:26:09'),(5,'钱七','zxasqw','','这家伙很赖，什么也没留下',' 10:27:04'),(6,'张三丰','123456','','这家伙很赖，什么也没留下',' 11:48:00'),(7,'张无忌','qwertyuiop','','这家伙很赖，什么也没留下',' 11:48:24'),(8,'fdsf','ffff','fdsfds',NULL,NULL),(9,'fdsf','ffff','fdsfds',NULL,NULL),(10,'aaaa','bbbb','','这家伙很赖，什么也没留下',' 22:07:45');
/*Table structure for table `blog` */
DROP TABLE IF EXISTS `blog`;
CREATE TABLE `blog` (
`blog_id` int(11) unsigned NOT NULL AUTO_INCREMENT COMMENT 'BlogId主键',
`blog_title` varchar(255) NOT NULL COMMENT 'blog标题',
`author_id` int(11) unsigned NOT NULL COMMENT '作者ID外键',
PRIMARY KEY (`blog_id`),
KEY `fk_author_id` (`author_id`),
CONSTRAINT `fk_author_id` FOREIGN KEY (`author_id`) REFERENCES `author` (`author_id`)
) ENGINE=InnoDB AUTO_INCREMENT=6 DEFAULT CHARSET=utf8;
/*Data for the table `blog` */
into `blog`(`blog_id`,`blog_title`,`author_id`) values (1,'小张的Blog',1),(2,'小李',2),(3,'王五不是人',3),(4,'赵地人',4),(5,'钱钱钱',5);
/*Table structure for table `posts` */
DROP TABLE IF EXISTS `posts`;
CREATE TABLE `posts` (
`post_id` int(11) unsigned NOT NULL AUTO_INCREMENT COMMENT '文章主键ID',
`post_subject` varchar(255) NOT NULL COMMENT '文章主题，标题',
`post_body` text NOT NULL COMMENT '文章内容最大3000个字符',
`blog_id` int(11) unsigned NOT NULL COMMENT 'Blog主键做外键',
`createtime` datetime DEFAULT CURRENT_TIMESTAMP COMMENT '文章创建时间',
PRIMARY KEY (`post_id`),
KEY `fk_blog_id` (`blog_id`),
CONSTRAINT `fk_blog_id` FOREIGN KEY (`blog_id`) REFERENCES `blog` (`blog_id`)
) ENGINE=InnoDB AUTO_INCREMENT=8 DEFAULT CHARSET=utf8mb4;
/*Data for the table `posts` */
into `posts`(`post_id`,`post_subject`,`post_body`,`blog_id`,`createtime`) values (1,'Mybatis入门一','什么是 MyBatis ？\r\nMyBatis 是支持定制化 SQL、存储过程以及高级映射的优秀的持久层框架。MyBatis 避免了几乎所有的 JDBC 代码和手动设置参数以及获取结果集。MyBatis 可以对配置和原生Map使用简单的 XML 或注解，将接口和 Java 的 POJOs(Plain Old Java Objects,普通的 Java对象)映射成数据库中的记录。',1,' 10:32:21'),(2,'Mybatis入门二','要使用 MyBatis， 只需将 mybatis-x.x.x.jar 文件置于 classpath 中即可。',1,' 10:32:52'),(3,'Oracle学习','Oracle Database，又名Oracle RDBMS，或简称Oracle。是甲骨文公司的一款关系数据库管理系统',2,' 10:33:26'),(4,'JAVA学习一','Java是由Sun Microsystems公司于1995年5月推出的Java面向对象程序设计语言和Java平台的总称',3,' 10:34:17'),(5,'PL/SQL','PL/SQL也是一种程序语言，叫做过程化SQL语言（Procedural Language/SQL）。PL/SQL是Oracle数据库对SQL语句的扩展',4,' 10:37:52'),(6,'CSS标签选择器','标签选择器\r\nID选择器\r\n类选择器\r\n特殊选择器',5,' 10:39:44'),(7,'javascript','js:是前端脚本语言',2,' 10:40:18');
/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;
数据表和数据
二、创建项目
2.1、创建项目
三、建立实体类与Mapper接口
3.1、3个实体类
package com.pb.mybatis.
import java.util.D
* @ClassName: Author
* @Description: TODO(作者)
* @author 刘楠
下午12:39:33
public class Author {
private Integer authorId;
//作者姓名
private String authorUserN
//作者密码
private String authorP
//作者邮箱
private String authorE
//作者介绍
private String authroB
//注册时间
private Date registerT
public Integer getAuthorId() {
return authorId;
public void setAuthorId(Integer authorId) {
this.authorId = authorId;
public String getAuthorUserName() {
return authorUserN
public void setAuthorUserName(String authorUserName) {
this.authorUserName = authorUserN
public String getAuthorPassword() {
return authorP
public void setAuthorPassword(String authorPassword) {
this.authorPassword = authorP
public String getAuthorEmail() {
return authorE
public void setAuthorEmail(String authorEmail) {
this.authorEmail = authorE
public String getAuthroBio() {
return authroB
public void setAuthroBio(String authroBio) {
this.authroBio = authroB
public Date getRegisterTime() {
return registerT
public void setRegisterTime(Date registerTime) {
this.registerTime = registerT
public String toString() {
return "Author [authorId=" + authorId + ", authorUserName="
+ authorUserName + ", authorPassword=" + authorPassword
+ ", authorEmail=" + authorEmail + ", authroBio=" + authroBio
+ ", registerTime=" + registerTime + "]";
package com.pb.mybatis.
import java.util.L
public class Blog {
private Integer blogId;
//Blog 名称标题
private String blogT
//外键authorId
//文章 列表
private Integer authorId;
//文章列表
private List&Posts& postsL
public Integer getBlogId() {
return blogId;
public void setBlogId(Integer blogId) {
this.blogId = blogId;
public String getBlogTitle() {
return blogT
public void setBlogTitle(String blogTitle) {
this.blogTitle = blogT
public Author getAuthor() {
public void setAuthor(Author author) {
this.author =
public Integer getAuthorId() {
return authorId;
public void setAuthorId(Integer authorId) {
this.authorId = authorId;
public List&Posts& getPostsList() {
return postsL
public void setPostsList(List&Posts& postsList) {
this.postsList = postsL
public String toString() {
return "Blog [blogId=" + blogId + ", blogTitle=" + blogTitle
", authorId=" + authorId + "]";
package com.pb.mybatis.
import java.util.D
public class Posts {
private Integer postId;
//文章标题
private String postT
//文章主体内容
private String postB
private Integer blogId;
//建立时间
private Date createT
public Integer getPostId() {
return postId;
public void setPostId(Integer postId) {
this.postId = postId;
public String getPostTitle() {
return postT
public void setPostTitle(String postTitle) {
this.postTitle = postT
public String getPostBody() {
return postB
public void setPostBody(String postBody) {
this.postBody = postB
public Date getCreateTime() {
return createT
public void setCreateTime(Date createTime) {
this.createTime = createT
public Integer getBlogId() {
return blogId;
public void setBlogId(Integer blogId) {
this.blogId = blogId;
public String toString() {
return "Posts [postId=" + postId + ", postTitle=" + postTitle
+ ", postBody=" + postBody + ", createTime=" + createTime
+ ", blogId=" + blogId + "]";
3.2、3个接口
package com.pb.mybatis.
import com.pb.mybatis.po.A
public interface AuthorMapper {
* @Title: findAuthorById
* @Description: TODO(根据id查找)
* @param @param id
* @param @return
* @return Author
public Author findAuthorById(int id);
package com.pb.mybatis.
import com.pb.mybatis.po.B
public interface BlogMapper {
* @Title: findBlogById
* @Description: TODO(根据BLOGID查找BLOG，并关联author，与posts实现延时加载)
* @param @param id
* @param @return
* @return Blog
public Blog findBlogById(int blogId);
package com.pb.mybatis.
import java.util.L
import com.pb.mybatis.po.P
public interface PostsMapper {
* @Title: findPostsByBlogId
* @Description: TODO(根据BLOGID查找文章列表)
* @param @param blogId
* @param @return
* @return List&Posts&
public List&Posts& findPostsByBlogId(int blogId);
四、建立mapper.xml与confinguration.xml
4.1、相对应的mapper.xml
AuthorMapper.xml
&?xml version="1.0" encoding="UTF-8"?&
&!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd"&
&mapper namespace="com.pb.mybatis.mapper.AuthorMapper"&
&!--映射作者Author
&resultMap type="Author" id="authorResultMap"&
&id property="authorId" column="author_id"/&
&result property="authorUserName" column="author_username"/&
&result property="authorPassword" column="author_password"/&
&result property="authorEmail" column="author_email"/&
&result property="authroBio" column="author_bio"/&
&result property="registerTime" column="register_time"/&
&/resultMap&
&!-- 根据ID查找 --&
&select id="findAuthorById" parameterType="int" resultMap="authorResultMap"&
select * from author
where author_id=#{id}
BlogMapper.xml
&?xml version="1.0" encoding="UTF-8"?&
&!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd"&
&mapper namespace="com.pb.mybatis.mapper.BlogMapper"&
&!--Blog映射
&resultMap type="Blog" id="blogResultMap"&
&!--Blog映射
&id property="blogId" column="blog_id"/&
&result property="blogTitle" column="blog_title"/&
&result property="authorId" column="author_id"/&
&!--一对一
&association property="author" javaType="Author" column="author_id" select="com.pb.mybatis.mapper.AuthorMapper.findAuthorById"/&
&!--关联作者
column：外键
select:引用Authro的namespace.方法
&!--一对多
ofType属性指定集合中元素的对象类型。--&
&collection property="postsList"
ofType="Posts" javaType="ArrayList"
column="blog_id" select="com.pb.mybatis.mapper.PostsMapper.findPostsByBlogId"/&
&/resultMap&
&!-- 根据ID查找 --&
&select id="findBlogById" parameterType="int" resultMap="blogResultMap"&
SELECT * FROM blog
WHERE blog_id=#{blogId}
PostsMapper.xml
&?xml version="1.0" encoding="UTF-8"?&
&!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd"&
&mapper namespace="com.pb.mybatis.mapper.PostsMapper"&
&!--映射作者文章
&resultMap type="Posts" id="postsResultMap"&
&id property="postId" column="post_id"/&
&result property="postTitle" column="post_subject"/&
&result property="postBody" column="post_body"/&
&result property="blogId" column="blog_id"/&
&result property="createTime" column="createtime"/&
&/resultMap&
&!-- 根据ID查找 --&
&select id="findPostsByBlogId" parameterType="int" resultMap="postsResultMap"&
select * from posts
where blog_id=#{blogId}
4.2、configuration.xml
db.properties
driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/mybatis?character=utf8
username=root
password=root
开启延时加载，同时关闭立即加载
&settings&
&!--开启延时加载
&setting name="lazyLoadingEnabled" value="true"/&
&!--关闭立即加载
&setting name="aggressiveLazyLoading" value="false"/&
&/settings&
&?xml version="1.0" encoding="UTF-8"?&
&!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd"&
&configuration&
&!--资源文件
&properties resource="db.properties"/&
&settings&
&!--开启延时加载
&setting name="lazyLoadingEnabled" value="true"/&
&!--关闭立即加载
&setting name="aggressiveLazyLoading" value="false"/&
&/settings&
&typeAliases&
&!-- &typeAlias type="com.pb.mybatis.po.User" alias="User"/& --&
&package name="com.pb.mybatis.po"/&
&/typeAliases&
&environments default="development"&
&environment id="development"&
&transactionManager type="JDBC"/&
&!--数据源
&dataSource type="POOLED"&
&property name="driver" value="${driver}"/&
&property name="url" value="${url}"/&
&property name="username" value="${username}"/&
&property name="password" value="${password}"/&
&/dataSource&
&/environment&
&/environments&
&package name="com.pb.mybatis.mapper"/&
&/mappers&
&/configuration&
5.1、JUNIT
package com.pb.mybatis.
import java.io.InputS
import java.util.L
import org.apache.ibatis.io.R
import org.apache.ibatis.session.SqlS
import org.apache.ibatis.session.SqlSessionF
import org.apache.ibatis.session.SqlSessionFactoryB
import org.junit.B
import org.junit.T
import com.pb.mybatis.po.B
import com.pb.mybatis.po.P
public class BlogMapperTest {
private SqlSessionFactory sqlSessionF
public void setUp() throws Exception {
String config="configuration.xml";
InputStream resource=Resources.getResourceAsStream(config);
sqlSessionFactory=new SqlSessionFactoryBuilder().build(resource);
* @Title: testFindBlogs
* @Description: TODO(延时加载)
* @return void
public void testFindBlogById() {
//建立会话
SqlSession sqlSession=sqlSessionFactory.openSession();
//获取Mapper接口对象
BlogMapper blogMapper=sqlSession.getMapper(BlogMapper.class);
//调用Mapper方法
Blog blog=blogMapper.findBlogById(1);
System.out.println(blog.getBlogId()+"..."+blog.getBlogTitle());
System.out.println("===========开始延时加载作者Author===========");
System.out.println(blog.getAuthor());
System.out.println("===========开始延时加载文章===========");
List&Posts& list=blog.getPostsList();
/*int count=0;
for(Posts p:list){
System.out.println("count+"+count++);
System.out.println(p.getPostId());
System.out.println(p.getPostTitle());
System.out.println(p.getPostBody());
System.out.println(p.getCreateTime());
System.out.println(p.getBlogId());
DEBUG [main] - ==&
Preparing: SELECT * FROM blog WHERE blog_id=?
DEBUG [main] - ==& Parameters: 1(Integer)
DEBUG [main] - &==
1...小张的Blog
===========开始延时加载作者Author===========
DEBUG [main] - ==&
Preparing: select * from author where author_id=?
DEBUG [main] - ==& Parameters: 1(Integer)
DEBUG [main] - &==
Author [authorId=1, authorUserName=张三, authorPassword=123456, authorEmail=, authroBio=张三是个新手，刚开始注册, registerTime=Thu Oct 29 10:23:59 CST 2015]
===========开始延时加载文章===========
DEBUG [main] - ==&
Preparing: select * from posts where blog_id=?
DEBUG [main] - ==& Parameters: 1(Integer)
DEBUG [main] - &==
六、一级缓存
6.1、mybatis一级缓存
&mybatis，默认开启了一级缓存，sqlSession中默认有一个hashMap
当查询时，先去hashMap中查找，
如果有就直接，取出，不再操作数据库
如果没有就去数据库查找，并放在haspMap中
当做事物时，如添加，删除，修改，后有commit时会清空一级缓存
sqlSession是互不影响的，一级缓存
6.2、还是上级的例子
测试:查询用户
package com.pb.mybatis.
import static org.junit.Assert.*;
import java.io.InputS
import org.apache.ibatis.io.R
import org.apache.ibatis.session.SqlS
import org.apache.ibatis.session.SqlSessionF
import org.apache.ibatis.session.SqlSessionFactoryB
import org.junit.B
import org.junit.T
import com.pb.mybatis.po.A
public class AuthorMapperTest {
private SqlSessionFactory sqlSessionF
public void setUp() throws Exception {
String config="configuration.xml";
InputStream resource=Resources.getResourceAsStream(config);
sqlSessionFactory=new SqlSessionFactoryBuilder().build(resource);
public void testFindAuthorById() {
//获取会话工厂
SqlSession sqlSession=sqlSessionFactory.openSession();
AuthorMapper authorMapper=sqlSession.getMapper(AuthorMapper.class);
//第一次查询
Author author1=authorMapper.findAuthorById(2);
System.out.println(author1);
//再次查询同样的
Author author2=authorMapper.findAuthorById(2);
System.out.println(author2);
//再次查询不的同样的
Author author3=authorMapper.findAuthorById(4);
System.out.println(author3);
DEBUG [main] - ==&
Preparing: select * from author where author_id=?
DEBUG [main] - ==& Parameters: 2(Integer)
DEBUG [main] - &==
Author [authorId=2, authorUserName=李四, authorPassword=123asf, authorEmail=, authroBio=魂牵梦萦 , registerTime=Thu Oct 29 10:24:29 CST 2015]
Author [authorId=2, authorUserName=李四, authorPassword=123asf, authorEmail=, authroBio=魂牵梦萦 , registerTime=Thu Oct 29 10:24:29 CST 2015]
DEBUG [main] - ==&
Preparing: select * from author where author_id=?
DEBUG [main] - ==& Parameters: 4(Integer)
DEBUG [main] - &==
Author [authorId=4, authorUserName=赵六, authorPassword=123098sdfa, authorEmail=, authroBio=花午骨, registerTime=Thu Oct 29 10:26:09 CST 2015]
6.3、当查询后，做事务，再查询第一次的
接口中做添加方法
* @Title: addAuthor
* @Description: TODO(添加)
* @param @param author
* @param @return
* @return int
public int addAuthor(Author author);
mapper.xml中做同样的select
&insert id="addAuthor" parameterType="Author" useGeneratedKeys="true" keyProperty="authorId"&
INSERT INTO author(author_username,author_password,author_email,author_bio)
VALUES(#{authorUserName},#{authorPassword},#{authorEmail},#{authroBio})
package com.pb.mybatis.
import static org.junit.Assert.*;
import java.io.InputS
import org.apache.ibatis.io.R
import org.apache.ibatis.session.SqlS
import org.apache.ibatis.session.SqlSessionF
import org.apache.ibatis.session.SqlSessionFactoryB
import org.junit.B
import org.junit.T
import com.pb.mybatis.po.A
public class AuthorMapperTest {
private SqlSessionFactory sqlSessionF
public void setUp() throws Exception {
String config="configuration.xml";
InputStream resource=Resources.getResourceAsStream(config);
sqlSessionFactory=new SqlSessionFactoryBuilder().build(resource);
public void testFindAuthorById() {
//获取会话工厂
SqlSession sqlSession=sqlSessionFactory.openSession();
AuthorMapper authorMapper=sqlSession.getMapper(AuthorMapper.class);
//第一次查询
Author author1=authorMapper.findAuthorById(2);
System.out.println(author1);
System.out.println("=======下面有事务处理========");
Author newAuthor=new Author();
newAuthor.setAuthorEmail("qq.");
newAuthor.setAuthorPassword("fdsfds");
newAuthor.setAuthorUserName("郭靖");
newAuthor.setAuthroBio("射雕英雄传");
int num=authorMapper.addAuthor(newAuthor);
System.out.println(newAuthor.getAuthorId());
System.out.println("num="+num);
System.out.println("再次查询");
//再次查询同样的
Author author2=authorMapper.findAuthorById(2);
System.out.println(author2);
DEBUG [main] - ==&
Preparing: select * from author where author_id=?
DEBUG [main] - ==& Parameters: 2(Integer)
DEBUG [main] - &==
Author [authorId=2, authorUserName=李四, authorPassword=123asf, authorEmail=, authroBio=魂牵梦萦 , registerTime=Thu Oct 29 10:24:29 CST 2015]
=======下面有事务处理========
DEBUG [main] - ==&
Preparing: INSERT INTO author(author_username,author_password,author_email,author_bio) VALUES(?,?,?,?)
DEBUG [main] - ==& Parameters: 郭靖(String), fdsfds(String), qq.(String), 射雕英雄传(String)
DEBUG [main] - &==
Updates: 1
DEBUG [main] - Committing JDBC Connection [com.mysql.jdbc.JDBC4Connection@42bb0406]
DEBUG [main] - ==&
Preparing: select * from author where author_id=?
DEBUG [main] - ==& Parameters: 2(Integer)
DEBUG [main] - &==
Author [authorId=2, authorUserName=李四, authorPassword=123asf, authorEmail=, authroBio=魂牵梦萦 , registerTime=Thu Oct 29 10:24:29 CST 2015]
七、二级缓存
7.1、mybatis二级缓存与一级缓存
sqlSession是互不影响的，一级缓存
Mapper(namespace)是二级缓存
多个sqlSession可以共享一个Mapper的二级缓存区域
二级缓存按namespace分，其它的mapper也有自己的二级缓存区域namespace
第一个namespace的mapper都有一个二级缓存区域，2个mapper的namespace如果相同，这2个mapper执行sql查询数据将存在相同的二级缓存区域中.
7.2、开启二级缓存
1.二级缓存是mapper范围级别的，除了在configuration.xml设置二级缓存的总开关，还在在个体的mapper.xml中开启二级缓存
&settings&
&!--开启延时加载
&setting name="lazyLoadingEnabled" value="true"/&
&!--关闭立即加载
&setting name="aggressiveLazyLoading" value="false"/&
&!--开启二级缓存
&setting name="cacheEnabled" value="true" /&
&/settings&
2.mapper对就的pojo类，实现序列化
3.在authorMapper中开启二级缓存
&!--开启本mapper下的二级缓冲
public void testCache() {
// 获取会话工厂
SqlSession sqlSession1 = sqlSessionFactory.openSession();
AuthorMapper authorMapper1 = sqlSession1.getMapper(AuthorMapper.class);
// 第一次查询
Author author1 = authorMapper1.findAuthorById(2);
//必须关闭不数据无法写到缓存区域
sqlSession1.close();
// 获取会话工厂
/*SqlSession sqlSession2 = sqlSessionFactory.openSession();
AuthorMapper authorMapper2 = sqlSession2.getMapper(AuthorMapper.class);
sqlSession2.close();*/
// 获取会话工厂
SqlSession sqlSession3 = sqlSessionFactory.openSession();
AuthorMapper authorMapper3 = sqlSession3.getMapper(AuthorMapper.class);
// 第一次查询
Author author3 = authorMapper3.findAuthorById(2);
sqlSession3.close();
DEBUG [main] - Cache Hit Ratio [com.pb.mybatis.mapper.AuthorMapper]: 0.0
DEBUG [main] - Opening JDBC Connection
DEBUG [main] - Created connection .
DEBUG [main] - Setting autocommit to false on JDBC Connection [com.mysql.jdbc.JDBC4Connection@3414a97b]
DEBUG [main] - ==&
Preparing: select * from author where author_id=?
DEBUG [main] - ==& Parameters: 2(Integer)
DEBUG [main] - &==
DEBUG [main] - Resetting autocommit to true on JDBC Connection [com.mysql.jdbc.JDBC4Connection@3414a97b]
DEBUG [main] - Closing JDBC Connection [com.mysql.jdbc.JDBC4Connection@3414a97b]
DEBUG [main] - Returned connection
DEBUG [main] - Cache Hit Ratio [com.pb.mybatis.mapper.AuthorMapper]: 0.5
中间增加commit操作
public void testCache() {
// 获取会话工厂
SqlSession sqlSession1 = sqlSessionFactory.openSession();
AuthorMapper authorMapper1 = sqlSession1.getMapper(AuthorMapper.class);
// 第一次查询
Author author1 = authorMapper1.findAuthorById(2);
//必须关闭不数据无法写到缓存区域
sqlSession1.close();
// 获取会话工厂
SqlSession sqlSession2 = sqlSessionFactory.openSession();
AuthorMapper authorMapper2 = sqlSession2.getMapper(AuthorMapper.class);
Author author2 = authorMapper2.findAuthorById(2);
author2.setAuthorUserName("董事长");
author2.setAuthroBio("公司");
authorMapper2.updateAuthor(author2);
//commit会清空缓存区域
sqlSession2.close();
// 获取会话工厂
SqlSession sqlSession3 = sqlSessionFactory.openSession();
AuthorMapper authorMapper3 = sqlSession3.getMapper(AuthorMapper.class);
// 第一次查询
Author author3 = authorMapper3.findAuthorById(2);
sqlSession3.close();
DEBUG [main] - Cache Hit Ratio [com.pb.mybatis.mapper.AuthorMapper]: 0.0
DEBUG [main] - Opening JDBC Connection
DEBUG [main] - Created connection .
DEBUG [main] - Setting autocommit to false on JDBC Connection [com.mysql.jdbc.JDBC4Connection@3414a97b]
DEBUG [main] - ==&
Preparing: select * from author where author_id=?
DEBUG [main] - ==& Parameters: 2(Integer)
DEBUG [main] - &==
DEBUG [main] - Resetting autocommit to true on JDBC Connection [com.mysql.jdbc.JDBC4Connection@3414a97b]
DEBUG [main] - Closing JDBC Connection [com.mysql.jdbc.JDBC4Connection@3414a97b]
DEBUG [main] - Returned connection
DEBUG [main] - Cache Hit Ratio [com.pb.mybatis.mapper.AuthorMapper]: 0.5
DEBUG [main] - Opening JDBC Connection
DEBUG [main] - Checked out connection
from pool.
DEBUG [main] - Setting autocommit to false on JDBC Connection [com.mysql.jdbc.JDBC4Connection@3414a97b]
DEBUG [main] - ==&
Preparing: update author SET author_username=?, author_password=?, author_email=?, author_bio=?, register_time=? where author_id=?
DEBUG [main] - ==& Parameters: 董事长(String), 123asf(String), (String), 公司(String),
10:24:29.0(Timestamp), 2(Integer)
DEBUG [main] - &==
Updates: 1
DEBUG [main] - Committing JDBC Connection [com.mysql.jdbc.JDBC4Connection@3414a97b]
DEBUG [main] - Resetting autocommit to true on JDBC Connection [com.mysql.jdbc.JDBC4Connection@3414a97b]
DEBUG [main] - Closing JDBC Connection [com.mysql.jdbc.JDBC4Connection@3414a97b]
DEBUG [main] - Returned connection
DEBUG [main] - Cache Hit Ratio [com.pb.mybatis.mapper.AuthorMapper]: 0.3333
DEBUG [main] - Opening JDBC Connection
DEBUG [main] - Checked out connection
from pool.
DEBUG [main] - Setting autocommit to false on JDBC Connection [com.mysql.jdbc.JDBC4Connection@3414a97b]
DEBUG [main] - ==&
Preparing: select * from author where author_id=?
DEBUG [main] - ==& Parameters: 2(Integer)
DEBUG [main] - &==
DEBUG [main] - Resetting autocommit to true on JDBC Connection [com.mysql.jdbc.JDBC4Connection@3414a97b]
DEBUG [main] - Closing JDBC Connection [com.mysql.jdbc.JDBC4Connection@3414a97b]
DEBUG [main] - Returned connection
八、Mybatis与ehcache整合
8.1、把jar包导入项目
8.2、建立ehcache.xml
ehcache.xml
&ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="../config/ehcache.xsd"&
&diskStore path="F:\develop\ehcache" /&
&defaultCache
maxElementsInMemory="1000"
maxElementsOnDisk=""
eternal="false"
overflowToDisk="false"
timeToIdleSeconds="120"
timeToLiveSeconds="120"
diskExpiryThreadIntervalSeconds="120"
memoryStoreEvictionPolicy="LRU"&
&/defaultCache&
&/ehcache&
8.3、在mapper的cache中指定type
&!--开启本mapper下的二级缓冲
type指定为ehcachecache类开
在ehcache和mybatis的整合包中
&cache type="org.mybatis.caches.ehcache.EhcacheCache"/&
public void testCache() {
// 获取会话工厂
SqlSession sqlSession1 = sqlSessionFactory.openSession();
AuthorMapper authorMapper1 = sqlSession1.getMapper(AuthorMapper.class);
// 第一次查询
Author author1 = authorMapper1.findAuthorById(2);
//必须关闭不数据无法写到缓存区域
sqlSession1.close();
// 获取会话工厂
SqlSession sqlSession2 = sqlSessionFactory.openSession();
AuthorMapper authorMapper2 = sqlSession2.getMapper(AuthorMapper.class);
Author author2 = authorMapper2.findAuthorById(2);
author2.setAuthorUserName("董事长");
author2.setAuthroBio("公司");
authorMapper2.updateAuthor(author2);
//commit会清空缓存区域
sqlSession2.close();
// 获取会话工厂
SqlSession sqlSession3 = sqlSessionFactory.openSession();
AuthorMapper authorMapper3 = sqlSession3.getMapper(AuthorMapper.class);
// 第一次查询
Author author3 = authorMapper3.findAuthorById(2);
sqlSession3.close();
DEBUG [main] - Configuring ehcache from ehcache.xml found in the classpath: file:/E:/mywork/MybatisDemo2/bin/ehcache.xml
DEBUG [main] - Configuring ehcache from URL: file:/E:/mywork/MybatisDemo2/bin/ehcache.xml
DEBUG [main] - Configuring ehcache from InputStream
DEBUG [main] - Ignoring ehcache attribute xmlns:xsi
DEBUG [main] - Ignoring ehcache attribute xsi:noNamespaceSchemaLocation
DEBUG [main] - Disk Store Path: F:\develop\ehcache
DEBUG [main] - Creating new CacheManager with default config
DEBUG [main] - propertiesString is null.
DEBUG [main] - No CacheManagerEventListenerFactory class specified. Skipping...
DEBUG [main] - No BootstrapCacheLoaderFactory class specified. Skipping...
DEBUG [main] - CacheWriter factory not configured. Skipping...
DEBUG [main] - No CacheExceptionHandlerFactory class specified. Skipping...
DEBUG [main] - Initialized net.sf.ehcache.store.NotifyingMemoryStore for com.pb.mybatis.mapper.AuthorMapper
DEBUG [main] - Initialised cache: com.pb.mybatis.mapper.AuthorMapper
DEBUG [main] - CacheDecoratorFactory not configured for defaultCache. Skipping for 'com.pb.mybatis.mapper.AuthorMapper'.
DEBUG [main] - Cache Hit Ratio [com.pb.mybatis.mapper.AuthorMapper]: 0.0
DEBUG [main] - Opening JDBC Connection
DEBUG [main] - Created connection .
DEBUG [main] - Setting autocommit to false on JDBC Connection [com.mysql.jdbc.JDBC4Connection@4cb533b8]
DEBUG [main] - ==&
Preparing: select * from author where author_id=?
DEBUG [main] - ==& Parameters: 2(Integer)
DEBUG [main] - &==
DEBUG [main] - Resetting autocommit to true on JDBC Connection [com.mysql.jdbc.JDBC4Connection@4cb533b8]
DEBUG [main] - Closing JDBC Connection [com.mysql.jdbc.JDBC4Connection@4cb533b8]
DEBUG [main] - Returned connection
DEBUG [main] - Cache Hit Ratio [com.pb.mybatis.mapper.AuthorMapper]: 0.5
DEBUG [main] - Opening JDBC Connection
DEBUG [main] - Checked out connection
from pool.
DEBUG [main] - Setting autocommit to false on JDBC Connection [com.mysql.jdbc.JDBC4Connection@4cb533b8]
DEBUG [main] - ==&
Preparing: update author SET author_username=?, author_password=?, author_email=?, author_bio=?, register_time=? where author_id=?
DEBUG [main] - ==& Parameters: 董事长(String), 123asf(String), (String), 公司(String),
10:24:29.0(Timestamp), 2(Integer)
DEBUG [main] - &==
Updates: 1
DEBUG [main] - Committing JDBC Connection [com.mysql.jdbc.JDBC4Connection@4cb533b8]
DEBUG [main] - Resetting autocommit to true on JDBC Connection [com.mysql.jdbc.JDBC4Connection@4cb533b8]
DEBUG [main] - Closing JDBC Connection [com.mysql.jdbc.JDBC4Connection@4cb533b8]
DEBUG [main] - Returned connection
DEBUG [main] - Cache Hit Ratio [com.pb.mybatis.mapper.AuthorMapper]: 0.3333
DEBUG [main] - Opening JDBC Connection
DEBUG [main] - Checked out connection
from pool.
DEBUG [main] - Setting autocommit to false on JDBC Connection [com.mysql.jdbc.JDBC4Connection@4cb533b8]
DEBUG [main] - ==&
Preparing: select * from author where author_id=?
DEBUG [main] - ==& Parameters: 2(Integer)
DEBUG [main] - &==
DEBUG [main] - Resetting autocommit to true on JDBC Connection [com.mysql.jdbc.JDBC4Connection@4cb533b8]
DEBUG [main] - Closing JDBC Connection [com.mysql.jdbc.JDBC4Connection@4cb533b8]
DEBUG [main] - Returned connection
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