[英]Spring Boot can not setup cache
嘗試在Spring Boot項目中設置Memcache,但是它不起作用。 我什至嘗試設置默認緩存(ConcurrentMapCacheManager),但效果不佳。
我讀過的每個教程(甚至是Spring官方)都說此配置足以設置緩存
緩存配置:
@Configuration
@EnableCaching
public class CacheConfiguration {
@Bean
public CacheManager cacheManager() {
return new ConcurrentMapCacheManager("test_cache");
}
}
緩存使用:
@Service
@CacheConfig(cacheNames = "test_cache")
public class UserServiceImpl extends IUserService {
...
@Cacheable
public UserEntity getByEmail(String email) {
UserEntity entity = repository.findByEmail(email);
return entity;
}
...
}
pom.xml
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>1.5.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<version>1.5.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.2.12.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.2.12.Final</version>
</dependency>
<dependency>
<groupId>org.hsqldb</groupId>
<artifactId>hsqldb</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>commons-pool</groupId>
<artifactId>commons-pool</artifactId>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
</dependency>
<dependency>
<groupId>com.vladmihalcea</groupId>
<artifactId>hibernate-types-52</artifactId>
<version>1.1.1</version>
</dependency>
<dependency>
<groupId>commons-collections</groupId>
<artifactId>commons-collections</artifactId>
<version>3.2.2</version>
</dependency>
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>2.0.0.Final</version>
</dependency>
<dependency>
<groupId>io.reactivex.rxjava2</groupId>
<artifactId>rxjava</artifactId>
<version>2.1.5</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-cache</artifactId>
</dependency>
</dependencies>
某些依賴關系可能與Spring緩存依賴關系沖突嗎?
如果您使用的是Memcached,則應將UserEntity 序列化 (即UserEntity實現Serializable )。
您可以在此處檢查將Spring Boot與Memcached結合使用的小樣本項目。
我剛剛創建了一個演示項目,以演示此簡單的緩存配置的工作方式。
@Configuration
@EnableCaching
public class CachingConfig {
@Bean
public CacheManager cacheManager() {
return new ConcurrentMapCacheManager("test_cache");
}
}
服務的接口。
public interface TestDataService {
String getEmail(String email);
}
相應的實現。
@Service
@CacheConfig(cacheNames={"test_cache"})
public class TestDataServiceImpl implements TestDataService {
@Cacheable
public String getEmail(String email) {
return email;
}
}
和一個虛擬控制器。
@RestController
public class TestDataController {
private TestDataService testDataService;
@Autowired
public TestDataController(TestDataService testDataService) {
this.testDataService = testDataService;
}
@RequestMapping(value = "test")
String getEmail() {
return testDataService.getEmail("test.me");
}
}
然后,當您調用http請求localhost:8080/test
並將斷點放入TestDataServiceImpl.getEmail()
您可以看到只有在第一次實際執行該方法時。
我在github中添加了代碼,以便您看一下。
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