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✨ spring-boot-demo-cache-ehcache 完成

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Yangkai.Shen 5 years ago
parent
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  1. +1
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      pom.xml
  2. +25
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      spring-boot-demo-cache-ehcache/.gitignore
  3. +301
    -0
      spring-boot-demo-cache-ehcache/README.md
  4. +69
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      spring-boot-demo-cache-ehcache/pom.xml
  5. +27
    -0
      spring-boot-demo-cache-ehcache/src/main/java/com/xkcoding/cache/ehcache/SpringBootDemoCacheEhcacheApplication.java
  6. +35
    -0
      spring-boot-demo-cache-ehcache/src/main/java/com/xkcoding/cache/ehcache/entity/User.java
  7. +41
    -0
      spring-boot-demo-cache-ehcache/src/main/java/com/xkcoding/cache/ehcache/service/UserService.java
  8. +83
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      spring-boot-demo-cache-ehcache/src/main/java/com/xkcoding/cache/ehcache/service/impl/UserServiceImpl.java
  9. +8
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      spring-boot-demo-cache-ehcache/src/main/resources/application.yml
  10. +37
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      spring-boot-demo-cache-ehcache/src/main/resources/ehcache.xml
  11. +16
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      spring-boot-demo-cache-ehcache/src/test/java/com/xkcoding/cache/ehcache/SpringBootDemoCacheEhcacheApplicationTests.java
  12. +65
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      spring-boot-demo-cache-ehcache/src/test/java/com/xkcoding/cache/ehcache/service/UserServiceTest.java

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pom.xml View File

@@ -27,6 +27,7 @@
<module>spring-boot-demo-orm-mybatis-plus</module> <module>spring-boot-demo-orm-mybatis-plus</module>
<module>spring-boot-demo-orm-beetlsql</module> <module>spring-boot-demo-orm-beetlsql</module>
<module>spring-boot-demo-cache-redis</module> <module>spring-boot-demo-cache-redis</module>
<module>spring-boot-demo-cache-ehcache</module>
<module>spring-boot-demo-email</module> <module>spring-boot-demo-email</module>
<module>spring-boot-demo-upload</module> <module>spring-boot-demo-upload</module>
<module>spring-boot-demo-war</module> <module>spring-boot-demo-war</module>


+ 25
- 0
spring-boot-demo-cache-ehcache/.gitignore View File

@@ -0,0 +1,25 @@
/target/
!.mvn/wrapper/maven-wrapper.jar

### STS ###
.apt_generated
.classpath
.factorypath
.project
.settings
.springBeans
.sts4-cache

### IntelliJ IDEA ###
.idea
*.iws
*.iml
*.ipr

### NetBeans ###
/nbproject/private/
/build/
/nbbuild/
/dist/
/nbdist/
/.nb-gradle/

+ 301
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spring-boot-demo-cache-ehcache/README.md View File

@@ -0,0 +1,301 @@
# spring-boot-demo-cache-ehcache

> 此 demo 主要演示了 Spring Boot 如何集成 ehcache 使用缓存。

## pom.xml

```xml
<?xml version="1.0" encoding="UTF-8"?>
<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>

<artifactId>spring-boot-demo-cache-ehcache</artifactId>
<version>1.0.0-SNAPSHOT</version>
<packaging>jar</packaging>

<name>spring-boot-demo-cache-ehcache</name>
<description>Demo project for Spring Boot</description>

<parent>
<groupId>com.xkcoding</groupId>
<artifactId>spring-boot-demo</artifactId>
<version>1.0.0-SNAPSHOT</version>
</parent>

<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>

<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-cache</artifactId>
</dependency>

<dependency>
<groupId>net.sf.ehcache</groupId>
<artifactId>ehcache</artifactId>
</dependency>

<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>

<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
</dependency>

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>

<build>
<finalName>spring-boot-demo-cache-ehcache</finalName>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>

</project>
```

## SpringBootDemoCacheEhcacheApplication.java

```java
/**
* <p>
* 启动类
* </p>
*
* @package: com.xkcoding.cache.ehcache
* @description: 启动类
* @author: yangkai.shen
* @date: Created in 2018/11/16 17:02
* @copyright: Copyright (c) 2018
* @version: V1.0
* @modified: yangkai.shen
*/
@SpringBootApplication
@EnableCaching
public class SpringBootDemoCacheEhcacheApplication {

public static void main(String[] args) {
SpringApplication.run(SpringBootDemoCacheEhcacheApplication.class, args);
}
}
```

## application.yml

```yaml
spring:
cache:
type: ehcache
ehcache:
config: classpath:ehcache.xml
logging:
level:
com.xkcoding: debug
```

## ehcache.xml

```xml
<!-- ehcache配置 -->
<ehcache
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="http://ehcache.org/ehcache.xsd"
updateCheck="false">
<!--缓存路径，用户目录下的base_ehcache目录-->
<diskStore path="user.home/base_ehcache"/>

<defaultCache
maxElementsInMemory="20000"
eternal="false"
timeToIdleSeconds="120"
timeToLiveSeconds="120"
overflowToDisk="true"
maxElementsOnDisk="10000000"
diskPersistent="false"
diskExpiryThreadIntervalSeconds="120"
memoryStoreEvictionPolicy="LRU"/>

<!--
缓存文件名：user，同样的可以配置多个缓存
maxElementsInMemory：内存中最多存储
eternal：外部存储
overflowToDisk：超出缓存到磁盘
diskPersistent：磁盘持久化
timeToLiveSeconds：缓存时间
diskExpiryThreadIntervalSeconds：磁盘过期时间
-->
<cache name="user"
maxElementsInMemory="20000"
eternal="true"
overflowToDisk="true"
diskPersistent="false"
timeToLiveSeconds="0"
diskExpiryThreadIntervalSeconds="120"/>

</ehcache>
```

## UserServiceImpl.java

```java
/**
* <p>
* UserService
* </p>
*
* @package: com.xkcoding.cache.ehcache.service.impl
* @description: UserService
* @author: yangkai.shen
* @date: Created in 2018/11/16 16:54
* @copyright: Copyright (c) 2018
* @version: V1.0
* @modified: yangkai.shen
*/
@Service
@Slf4j
public class UserServiceImpl implements UserService {
/**
* 模拟数据库
*/
private static final Map<Long, User> DATABASES = Maps.newConcurrentMap();

/**
* 初始化数据
*/
static {
DATABASES.put(1L, new User(1L, "user1"));
DATABASES.put(2L, new User(2L, "user2"));
DATABASES.put(3L, new User(3L, "user3"));
}

/**
* 保存或修改用户
*
* @param user 用户对象
* @return 操作结果
*/
@CachePut(value = "user", key = "#user.id")
@Override
public User saveOrUpdate(User user) {
DATABASES.put(user.getId(), user);
log.info("保存用户【user】= {}", user);
return user;
}

/**
* 获取用户
*
* @param id key值
* @return 返回结果
*/
@Cacheable(value = "user", key = "#id")
@Override
public User get(Long id) {
// 我们假设从数据库读取
log.info("查询用户【id】= {}", id);
return DATABASES.get(id);
}

/**
* 删除
*
* @param id key值
*/
@CacheEvict(value = "user", key = "#id")
@Override
public void delete(Long id) {
DATABASES.remove(id);
log.info("删除用户【id】= {}", id);
}
}
```

## UserServiceTest.java

```java
/**
* <p>
* ehcache缓存测试
* </p>
*
* @package: com.xkcoding.cache.ehcache.service
* @description: ehcache缓存测试
* @author: yangkai.shen
* @date: Created in 2018/11/16 16:58
* @copyright: Copyright (c) 2018
* @version: V1.0
* @modified: yangkai.shen
*/
@Slf4j
public class UserServiceTest extends SpringBootDemoCacheEhcacheApplicationTests {

@Autowired
private UserService userService;

/**
* 获取两次，查看日志验证缓存
*/
@Test
public void getTwice() {
// 模拟查询id为1的用户
User user1 = userService.get(1L);
log.debug("【user1】= {}", user1);

// 再次查询
User user2 = userService.get(1L);
log.debug("【user2】= {}", user2);
// 查看日志，只打印一次日志，证明缓存生效
}

/**
* 先存，再查询，查看日志验证缓存
*/
@Test
public void getAfterSave() {
userService.saveOrUpdate(new User(4L, "user4"));

User user = userService.get(4L);
log.debug("【user】= {}", user);
// 查看日志，只打印保存用户的日志，查询是未触发查询日志，因此缓存生效
}

/**
* 测试删除，查看redis是否存在缓存数据
*/
@Test
public void deleteUser() {
// 查询一次，使ehcache中存在缓存数据
userService.get(1L);
// 删除，查看ehcache是否存在缓存数据
userService.delete(1L);
}
}
```

## 参考

- Ehcache 官网：http://www.ehcache.org/documentation/
- Spring Boot 官方文档：https://docs.spring.io/spring-boot/docs/2.1.0.RELEASE/reference/htmlsingle/#boot-features-caching-provider-ehcache2
- 博客：https://juejin.im/post/5b308de9518825748b56ae1d

+ 69
- 0
spring-boot-demo-cache-ehcache/pom.xml View File

@@ -0,0 +1,69 @@
<?xml version="1.0" encoding="UTF-8"?>
<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>

<artifactId>spring-boot-demo-cache-ehcache</artifactId>
<version>1.0.0-SNAPSHOT</version>
<packaging>jar</packaging>

<name>spring-boot-demo-cache-ehcache</name>
<description>Demo project for Spring Boot</description>

<parent>
<groupId>com.xkcoding</groupId>
<artifactId>spring-boot-demo</artifactId>
<version>1.0.0-SNAPSHOT</version>
</parent>

<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>

<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-cache</artifactId>
</dependency>

<dependency>
<groupId>net.sf.ehcache</groupId>
<artifactId>ehcache</artifactId>
</dependency>

<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>

<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
</dependency>

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>

<build>
<finalName>spring-boot-demo-cache-ehcache</finalName>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>

</project>

+ 27
- 0
spring-boot-demo-cache-ehcache/src/main/java/com/xkcoding/cache/ehcache/SpringBootDemoCacheEhcacheApplication.java View File

@@ -0,0 +1,27 @@
package com.xkcoding.cache.ehcache;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cache.annotation.EnableCaching;

/**
* <p>
* 启动类
* </p>
*
* @package: com.xkcoding.cache.ehcache
* @description: 启动类
* @author: yangkai.shen
* @date: Created in 2018/11/16 17:02
* @copyright: Copyright (c) 2018
* @version: V1.0
* @modified: yangkai.shen
*/
@SpringBootApplication
@EnableCaching
public class SpringBootDemoCacheEhcacheApplication {

public static void main(String[] args) {
SpringApplication.run(SpringBootDemoCacheEhcacheApplication.class, args);
}
}

+ 35
- 0
spring-boot-demo-cache-ehcache/src/main/java/com/xkcoding/cache/ehcache/entity/User.java View File

@@ -0,0 +1,35 @@
package com.xkcoding.cache.ehcache.entity;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.io.Serializable;

/**
* <p>
* 用户实体
* </p>
*
* @package: com.xkcoding.cache.ehcache.entity
* @description: 用户实体
* @author: yangkai.shen
* @date: Created in 2018/11/16 16:53
* @copyright: Copyright (c) 2018
* @version: V1.0
* @modified: yangkai.shen
*/
@Data
@AllArgsConstructor
@NoArgsConstructor
public class User implements Serializable {
private static final long serialVersionUID = 2892248514883451461L;
/**
* 主键id
*/
private Long id;
/**
* 姓名
*/
private String name;
}

+ 41
- 0
spring-boot-demo-cache-ehcache/src/main/java/com/xkcoding/cache/ehcache/service/UserService.java View File

@@ -0,0 +1,41 @@
package com.xkcoding.cache.ehcache.service;

import com.xkcoding.cache.ehcache.entity.User;

/**
* <p>
* UserService
* </p>
*
* @package: com.xkcoding.cache.ehcache.service
* @description: UserService
* @author: yangkai.shen
* @date: Created in 2018/11/16 16:53
* @copyright: Copyright (c) 2018
* @version: V1.0
* @modified: yangkai.shen
*/
public interface UserService {
/**
* 保存或修改用户
*
* @param user 用户对象
* @return 操作结果
*/
User saveOrUpdate(User user);

/**
* 获取用户
*
* @param id key值
* @return 返回结果
*/
User get(Long id);

/**
* 删除
*
* @param id key值
*/
void delete(Long id);
}

+ 83
- 0
spring-boot-demo-cache-ehcache/src/main/java/com/xkcoding/cache/ehcache/service/impl/UserServiceImpl.java View File

@@ -0,0 +1,83 @@
package com.xkcoding.cache.ehcache.service.impl;

import com.google.common.collect.Maps;
import com.xkcoding.cache.ehcache.entity.User;
import com.xkcoding.cache.ehcache.service.UserService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.CachePut;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;

import java.util.Map;

/**
* <p>
* UserService
* </p>
*
* @package: com.xkcoding.cache.ehcache.service.impl
* @description: UserService
* @author: yangkai.shen
* @date: Created in 2018/11/16 16:54
* @copyright: Copyright (c) 2018
* @version: V1.0
* @modified: yangkai.shen
*/
@Service
@Slf4j
public class UserServiceImpl implements UserService {
/**
* 模拟数据库
*/
private static final Map<Long, User> DATABASES = Maps.newConcurrentMap();

/**
* 初始化数据
*/
static {
DATABASES.put(1L, new User(1L, "user1"));
DATABASES.put(2L, new User(2L, "user2"));
DATABASES.put(3L, new User(3L, "user3"));
}

/**
* 保存或修改用户
*
* @param user 用户对象
* @return 操作结果
*/
@CachePut(value = "user", key = "#user.id")
@Override
public User saveOrUpdate(User user) {
DATABASES.put(user.getId(), user);
log.info("保存用户【user】= {}", user);
return user;
}

/**
* 获取用户
*
* @param id key值
* @return 返回结果
*/
@Cacheable(value = "user", key = "#id")
@Override
public User get(Long id) {
// 我们假设从数据库读取
log.info("查询用户【id】= {}", id);
return DATABASES.get(id);
}

/**
* 删除
*
* @param id key值
*/
@CacheEvict(value = "user", key = "#id")
@Override
public void delete(Long id) {
DATABASES.remove(id);
log.info("删除用户【id】= {}", id);
}
}

+ 8
- 0
spring-boot-demo-cache-ehcache/src/main/resources/application.yml View File

@@ -0,0 +1,8 @@
spring:
cache:
type: ehcache
ehcache:
config: classpath:ehcache.xml
logging:
level:
com.xkcoding: debug

+ 37
- 0
spring-boot-demo-cache-ehcache/src/main/resources/ehcache.xml View File

@@ -0,0 +1,37 @@
<!-- ehcache配置 -->
<ehcache
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="http://ehcache.org/ehcache.xsd"
updateCheck="false">
<!--缓存路径，用户目录下的base_ehcache目录-->
<diskStore path="user.home/base_ehcache"/>

<defaultCache
maxElementsInMemory="20000"
eternal="false"
timeToIdleSeconds="120"
timeToLiveSeconds="120"
overflowToDisk="true"
maxElementsOnDisk="10000000"
diskPersistent="false"
diskExpiryThreadIntervalSeconds="120"
memoryStoreEvictionPolicy="LRU"/>

<!--
缓存文件名：user，同样的可以配置多个缓存
maxElementsInMemory：内存中最多存储
eternal：外部存储
overflowToDisk：超出缓存到磁盘
diskPersistent：磁盘持久化
timeToLiveSeconds：缓存时间
diskExpiryThreadIntervalSeconds：磁盘过期时间
-->
<cache name="user"
maxElementsInMemory="20000"
eternal="true"
overflowToDisk="true"
diskPersistent="false"
timeToLiveSeconds="0"
diskExpiryThreadIntervalSeconds="120"/>

</ehcache>

+ 16
- 0
spring-boot-demo-cache-ehcache/src/test/java/com/xkcoding/cache/ehcache/SpringBootDemoCacheEhcacheApplicationTests.java View File

@@ -0,0 +1,16 @@
package com.xkcoding.cache.ehcache;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest
public class SpringBootDemoCacheEhcacheApplicationTests {

@Test
public void contextLoads() {
}

}

+ 65
- 0
spring-boot-demo-cache-ehcache/src/test/java/com/xkcoding/cache/ehcache/service/UserServiceTest.java View File

@@ -0,0 +1,65 @@
package com.xkcoding.cache.ehcache.service;

import com.xkcoding.cache.ehcache.SpringBootDemoCacheEhcacheApplicationTests;
import com.xkcoding.cache.ehcache.entity.User;
import lombok.extern.slf4j.Slf4j;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;

/**
* <p>
* ehcache缓存测试
* </p>
*
* @package: com.xkcoding.cache.ehcache.service
* @description: ehcache缓存测试
* @author: yangkai.shen
* @date: Created in 2018/11/16 16:58
* @copyright: Copyright (c) 2018
* @version: V1.0
* @modified: yangkai.shen
*/
@Slf4j
public class UserServiceTest extends SpringBootDemoCacheEhcacheApplicationTests {

@Autowired
private UserService userService;

/**
* 获取两次，查看日志验证缓存
*/
@Test
public void getTwice() {
// 模拟查询id为1的用户
User user1 = userService.get(1L);
log.debug("【user1】= {}", user1);

// 再次查询
User user2 = userService.get(1L);
log.debug("【user2】= {}", user2);
// 查看日志，只打印一次日志，证明缓存生效
}

/**
* 先存，再查询，查看日志验证缓存
*/
@Test
public void getAfterSave() {
userService.saveOrUpdate(new User(4L, "user4"));

User user = userService.get(4L);
log.debug("【user】= {}", user);
// 查看日志，只打印保存用户的日志，查询是未触发查询日志，因此缓存生效
}

/**
* 测试删除，查看redis是否存在缓存数据
*/
@Test
public void deleteUser() {
// 查询一次，使ehcache中存在缓存数据
userService.get(1L);
// 删除，查看ehcache是否存在缓存数据
userService.delete(1L);
}
}

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