1.MyBatis配置檔案開啟二級快取功能 

<settings> 
<settingname="cacheEnabled"value="true"/> 
</settings>

2.在 XxxMapper 介面上使用@CacheNamespace 註解 

@CacheNamespace
 public interface EmployeeMapper extends MyMapper<Employee>{

}

3.實體類上實現序列化

public class Employee implements Serializable {
	
	private static final long serialVersionUID = 1L;
 

專案搭建

 pom依賴：

<dependency><groupId>tk.mybatis</groupId>
    <artifactId>mapper</artifactId>
    <version>4.0.0-beta3</version>
</dependency>

 配置檔案更改：