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Spring框架5和EhCache 3.5_Spring_Spring Mvc_Ehcache_Ehcache 3 - Fatal编程技术网

Spring框架5和EhCache 3.5

Spring框架5和EhCache 3.5,spring,spring-mvc,ehcache,ehcache-3,Spring,Spring Mvc,Ehcache,Ehcache 3,我尝试在基于SpringBoot2/SpringFramework5的web应用程序中使用Ehcache3.5缓存特性 我添加了EHCache依赖项: <dependency> <groupId>org.ehcache</groupId> <artifactId>ehcache</artifactId> <version>3.5.0</version>

我尝试在基于SpringBoot2/SpringFramework5的web应用程序中使用Ehcache3.5缓存特性

我添加了EHCache依赖项:

    <dependency>
        <groupId>org.ehcache</groupId>
        <artifactId>ehcache</artifactId>
        <version>3.5.0</version>
    </dependency>
    <dependency>
        <groupId>javax.cache</groupId>
        <artifactId>cache-api</artifactId>
        <version>1.0.0</version>
    </dependency>
Spring启动配置:

@SpringBootApplication
@EnableCaching
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}
但当我调用此端点时,我得到一个异常:

无法为生成器[public org.Order org.OrderController.findById(int)]找到名为“orders”的缓存缓存=[orders]| key=“”| keyGenerator=“”| cacheManager=“”| cacheResolver=“”| condition=“”|除非=“”| sync='false'

然后我尝试使用Spring Framework 4中的示例:

@Bean
public CacheManager cacheManager() {
    return new EhCacheCacheManager(ehCacheCacheManager().getObject());
}

@Bean
public EhCacheManagerFactoryBean ehCacheCacheManager() {
    EhCacheManagerFactoryBean cmfb = new EhCacheManagerFactoryBean();
    cmfb.setConfigLocation(new ClassPathResource("ehcache.xml"));
    cmfb.setShared(true);
    return cmfb;
}
但由于异常,它无法编译:

无法解析类型net.sf.ehcache.CacheManager。它是从必需的.class文件间接引用的


请告知。

您需要强制它使用ehcache版本2

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-cache</artifactId>
</dependency>
<dependency>
    <groupId>net.sf.ehcache</groupId>
    <artifactId>ehcache</artifactId>
    <version>2.10.3</version>
</dependency>
这里是application.yml

spring:
  cache:
    ehcache:
      config: ehcache.xml
这里有一个带有测试计数器的服务

@Service
public class OrderService {

    public static int counter=0;

    @Cacheable("orders")
    public Order findById(Long id) {
        counter++;
        return new Order(id, "desc_" + id);
    }
}
下面是一个测试,以证明它正在使用缓存:

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

    @Autowired
    private OrderService orderService;

    @Test
    public void getHello() throws Exception {
        orderService.findById(1l);
        assertEquals(1, OrderService.counter);
        orderService.findById(1l);
        assertEquals(1, OrderService.counter);
        orderService.findById(2l);
        assertEquals(2, OrderService.counter);
    }
}

参见工作示例。

我做了额外的研究。Spring Boot(从application.properties)未获取以下配置:

因此,我创建了jcache.xml并将其放入src/main/resource文件夹:

<config xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'
    xmlns='http://www.ehcache.org/v3'
    xsi:schemaLocation="
        http://www.ehcache.org/v3 http://www.ehcache.org/schema/ehcache-core-3.0.xsd">

    <cache alias="orders">
        <key-type>org.springframework.cache.interceptor.SimpleKey</key-type>
        <value-type>java.util.Collections$SingletonList</value-type>
        <heap unit="entries">200</heap>
    </cache>
</config>

现在,Spring缓存工作正常。然而,如何获取ehcache.xml仍然是一个问题,这里有很多东西。您正在使用的Ehcache 3通过JCache与Spring一起使用

这就是为什么需要使用
spring.cache.jcache.config=classpath:ehcache.xml

然后,您的Ehcache配置实际上是一个Ehcache 2配置。
ehcachemanager
也是如此。对于JCache,应该使用
JCacheCacheCacheManager
。但事实上,您甚至不需要在
ehcache.xml
中使用它

以下是使其工作的步骤

步骤1:设置正确的依赖项。注意,您不需要指定任何版本,因为它们是由父pom依赖项管理提供的。javax.cache现在是1.1版

<dependency>
    <groupId>org.ehcache</groupId>
    <artifactId>ehcache</artifactId>
</dependency>
<dependency>
    <groupId>javax.cache</groupId>
    <artifactId>cache-api</artifactId>
</dependency>
步骤3:需要一个带有此行的
application.properties
来查找
ehcache.xml

spring.cache.jcache.config=classpath:ehcache.xml
注意,由于JCache位于类路径中,所以Spring缓存将选择它作为缓存提供程序。因此不需要指定
spring.cache.type=jcache

第4步:像以前一样启用缓存

    @SpringBootApplication
    @EnableCaching
    public class Cache5Application {

        private int value = 0;

        public static void main(String[] args) {
            ApplicationContext context = SpringApplication.run(Cache5Application.class, args);
            Cache5Application app = context.getBean(Cache5Application.class);
            System.out.println(app.value());
            System.out.println(app.value());
        }

        @Cacheable("value")
        public int value() {
            return value++;
        }
    }

面对同样的问题

  • 我的ehcache.xml看起来像

    
    20
    
  • application.properties
    中配置了
    spring.cache.jcache.config=classpath:ehcache.xml

  • 在我的应用程序类上启用
    @EnableCaching

  • 在我的服务实现上有
    @CacheResult

@CacheResult(cacheName=“vehicles”)公共车辆详情 getVehicle(@CacheKey字符串vehicleId)引发VehicleServiceException

  • 请注意,我没有CacheManager bean

如果有人能指出我遗漏了什么,那将非常有帮助。

嗯。。将ehcache.xml更改为,成功了

<config xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'
    xmlns='http://www.ehcache.org/v3'
    xmlns:jsr107='http://www.ehcache.org/v3/jsr107'
    xsi:schemaLocation="
        http://www.ehcache.org/v3 http://www.ehcache.org/schema/ehcache-core-3.0.xsd
        http://www.ehcache.org/v3/jsr107 http://www.ehcache.org/schema/ehcache-107-ext-3.0.xsd">

    <service>
        <jsr107:defaults enable-management="true"
            enable-statistics="true" />
    </service>

    <cache alias="vehicles" uses-template="heap-cache" />

    <cache-template name="heap-cache">
        <heap unit="entries">20</heap>
    </cache-template>
</config>

20

谢谢。有没有办法指定ehcache.xml(不是jcache.xml)?向上投票。这在19年6月起作用。除了
javax.cache
dependency之外,我已经准备好了一切。
spring.cache.jcache.config=classpath:jcache.xml
<dependency>
    <groupId>org.ehcache</groupId>
    <artifactId>ehcache</artifactId>
</dependency>
<dependency>
    <groupId>javax.cache</groupId>
    <artifactId>cache-api</artifactId>
</dependency>
<?xml version="1.0" encoding="UTF-8"?>
<config
    xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'
    xmlns:jsr107='http://www.ehcache.org/v3/jsr107'
    xmlns='http://www.ehcache.org/v3'
    xsi:schemaLocation="
        http://www.ehcache.org/v3 http://www.ehcache.org/schema/ehcache-core-3.5.xsd
        http://www.ehcache.org/v3/jsr107 http://www.ehcache.org/schema/ehcache-107-ext-3.5.xsd">

  <service>
    <jsr107:defaults enable-management="false" enable-statistics="true"/>
  </service>

  <cache alias="value">
    <resources>
      <heap unit="entries">2000</heap>
    </resources>
  </cache>
</config>
spring.cache.jcache.config=classpath:ehcache.xml
    @SpringBootApplication
    @EnableCaching
    public class Cache5Application {

        private int value = 0;

        public static void main(String[] args) {
            ApplicationContext context = SpringApplication.run(Cache5Application.class, args);
            Cache5Application app = context.getBean(Cache5Application.class);
            System.out.println(app.value());
            System.out.println(app.value());
        }

        @Cacheable("value")
        public int value() {
            return value++;
        }
    }
<config xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'
    xmlns='http://www.ehcache.org/v3'
    xmlns:jsr107='http://www.ehcache.org/v3/jsr107'
    xsi:schemaLocation="
        http://www.ehcache.org/v3 http://www.ehcache.org/schema/ehcache-core-3.0.xsd
        http://www.ehcache.org/v3/jsr107 http://www.ehcache.org/schema/ehcache-107-ext-3.0.xsd">
  <service>
      <jsr107:defaults>
          <jsr107:cache name="vehicles" template="heap-cache" />
      </jsr107:defaults>
  </service>
  <cache-template name="heap-cache">
      <heap unit="entries">20</heap>
  </cache-template>
</config>
<config xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'
    xmlns='http://www.ehcache.org/v3'
    xmlns:jsr107='http://www.ehcache.org/v3/jsr107'
    xsi:schemaLocation="
        http://www.ehcache.org/v3 http://www.ehcache.org/schema/ehcache-core-3.0.xsd
        http://www.ehcache.org/v3/jsr107 http://www.ehcache.org/schema/ehcache-107-ext-3.0.xsd">

    <service>
        <jsr107:defaults enable-management="true"
            enable-statistics="true" />
    </service>

    <cache alias="vehicles" uses-template="heap-cache" />

    <cache-template name="heap-cache">
        <heap unit="entries">20</heap>
    </cache-template>
</config>