package org.crazyit.app.domain;
public class User
{
private String name;
private int age;
public User()
{}
public User(String name, int age)
{
super();
this.name = name;
this.age = age;
}
public String getName()
{
return name;
}
public void setName(String name)
{
this.name = name;
}
public int getAge()
{
return age;
}
public void setAge(int age)
{
this.age = age;
}
}
四 Service
1 接口类
package org.crazyit.app.service;
import org.crazyit.app.domain.User;
public interface UserService
{
User getUsersByNameAndAge(String name, int age);
User getAnotherUser(String name, int age);
}
2 实现类
package org.crazyit.app.service.impl;
import org.crazyit.app.service.UserService;
import org.crazyit.app.domain.User;
import org.springframework.stereotype.Service;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.context.annotation.Scope;
@Service("userService")
public class UserServiceImpl implements UserService
{
@Cacheable(value = "users1")
public User getUsersByNameAndAge(String name, int age)
{
System.out.println("--正在执行findUsersByNameAndAge()查询方法--");
return new User(name, age);
}
@Cacheable(value = "users2")
public User getAnotherUser(String name, int age)
{
System.out.println("--正在执行findAnotherUser()查询方法--");
return new User(name, age);
}
}
五 测试类
package lee;
import org.crazyit.app.service.UserService;
import org.crazyit.app.domain.User;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class SpringTest
{
public static void main(String[] args)
{
ApplicationContext ctx =
new ClassPathXmlApplicationContext("beans.xml");
UserService us = ctx.getBean("userService" , UserService.class);
// 第一次调用us对象的方法时会执行该方法,并缓存方法的结果
User u1 = us.getUsersByNameAndAge("孙悟空", 500);
// 由于getAnotherUser()方法使用另一个缓存区,
// 因此无法使用getUsersByNameAndAge()方法缓存区的数据。
User u2 = us.getAnotherUser("孙悟空", 500);
System.out.println(u1 == u2); // 输出false
// getAnotherUser("孙悟空", 500)已经执行过一次,故下面代码使用缓存
User u3 = us.getAnotherUser("孙悟空", 500);
System.out.println(u2 == u3); // 输出true
}
}
package org.crazyit.app.domain;
public class User
{
private String name;
private int age;
public User()
{}
public User(String name, int age)
{
super();
this.name = name;
this.age = age;
}
public String getName()
{
return name;
}
public void setName(String name)
{
this.name = name;
}
public int getAge()
{
return age;
}
public void setAge(int age)
{
this.age = age;
}
}
四 Service
1 接口类
package org.crazyit.app.service;
import org.crazyit.app.domain.User;
public interface UserService
{
User getUsersByNameAndAge(String name, int age);
User getAnotherUser(String name, int age);
}
2 实现类
package org.crazyit.app.service.impl;
import org.crazyit.app.service.UserService;
import org.crazyit.app.domain.User;
import org.springframework.stereotype.Service;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.context.annotation.Scope;
@Service("userService")
public class UserServiceImpl implements UserService
{
@Cacheable(value = "users1")
public User getUsersByNameAndAge(String name, int age)
{
System.out.println("--正在执行findUsersByNameAndAge()查询方法--");
return new User(name, age);
}
@Cacheable(value = "users2")
public User getAnotherUser(String name, int age)
{
System.out.println("--正在执行findAnotherUser()查询方法--");
return new User(name, age);
}
}
五 测试类
package lee;
import org.crazyit.app.service.UserService;
import org.crazyit.app.domain.User;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class SpringTest
{
public static void main(String[] args)
{
ApplicationContext ctx =
new ClassPathXmlApplicationContext("beans.xml");
UserService us = ctx.getBean("userService" , UserService.class);
// 第一次调用us对象的方法时会执行该方法,并缓存方法的结果
User u1 = us.getUsersByNameAndAge("孙悟空", 500);
// 由于getAnotherUser()方法使用另一个缓存区,
// 因此无法使用getUsersByNameAndAge()方法缓存区的数据。
User u2 = us.getAnotherUser("孙悟空", 500);
System.out.println(u1 == u2); // 输出false
// getAnotherUser("孙悟空", 500)已经执行过一次,故下面代码使用缓存
User u3 = us.getAnotherUser("孙悟空", 500);
System.out.println(u2 == u3); // 输出true
}
}