一、环境
- Idea 2020.1
- JDK 1.8
- maven
二、目的
spring boot整合cache
三、步骤
3.1、点击File -> New Project -> Spring Initializer，点击next
3.2、在对应地方修改自己的项目信息
3.3、选择Web依赖，选中Spring Web、Spring Boot Actuator。可以选择Spring Boot版本，本次默认为2.2.7，点击Next
3.4、项目结构
四、添加文件
pom.xml文件
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.2.7.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>org.ouyushan</groupId> <artifactId>spring-boot-data-cache</artifactId> <version>0.0.1-SNAPSHOT</version> <name>spring-boot-data-cache</name> <description>Cache project for Spring Boot</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- Compile --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-cache</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> <exclusions> <exclusion> <groupId>org.junit.vintage</groupId> <artifactId>junit-vintage-engine</artifactId> </exclusion> </exclusions> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> <!-- 各版本缓存依赖 --> <profiles> <profile> <id>caffeine</id> <dependencies> <dependency> <groupId>com.github.ben-manes.caffeine</groupId> <artifactId>caffeine</artifactId> </dependency> </dependencies> </profile> <profile> <id>couchbase</id> <dependencies> <dependency> <groupId>com.couchbase.client</groupId> <artifactId>java-client</artifactId> </dependency> <dependency> <groupId>com.couchbase.client</groupId> <artifactId>couchbase-spring-cache</artifactId> </dependency> </dependencies> </profile> <profile> <id>ehcache2</id> <dependencies> <dependency> <groupId>net.sf.ehcache</groupId> <artifactId>ehcache</artifactId> </dependency> </dependencies> </profile> <profile> <id>ehcache</id> <dependencies> <dependency> <groupId>javax.cache</groupId> <artifactId>cache-api</artifactId> </dependency> <dependency> <groupId>org.ehcache</groupId> <artifactId>ehcache</artifactId> </dependency> </dependencies> </profile> <profile> <id>hazelcast</id> <dependencies> <dependency> <groupId>com.hazelcast</groupId> <artifactId>hazelcast</artifactId> </dependency> <dependency> <groupId>com.hazelcast</groupId> <artifactId>hazelcast-spring</artifactId> </dependency> </dependencies> </profile> <profile> <id>infinispan</id> <dependencies> <dependency> <groupId>org.infinispan</groupId> <artifactId>infinispan-spring4-embedded</artifactId> </dependency> <dependency> <groupId>org.infinispan</groupId> <artifactId>infinispan-jcache</artifactId> </dependency> </dependencies> </profile> <profile> <id>redis</id> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-redis</artifactId> </dependency> </dependencies> </profile> </profiles> </project>
Country.java文件
package org.ouyushan.springboot.data.cache.entity; import java.io.Serializable; /** * @Description: * @Author: ouyushan * @Email: ouyushan@hotmail.com * @Date: 2020/5/8 15:25 */ public class Country implements Serializable { private final String code; public Country(String code) { this.code = code; } public String getCode() { return this.code; } @Override public boolean equals(Object o) { if (this == o) { return true; } if (o == null || getClass() != o.getClass()) { return false; } Country country = (Country) o; return this.code.equals(country.code); } @Override public int hashCode() { return this.code.hashCode(); } }
CountryRepository.java
package org.ouyushan.springboot.data.cache.dao; import org.ouyushan.springboot.data.cache.entity.Country; import org.springframework.cache.annotation.CacheConfig; import org.springframework.cache.annotation.Cacheable; import org.springframework.stereotype.Component; /** * @Description: 通过注解@CacheConfig配置缓存名称 * @Author: ouyushan * @Email: ouyushan@hotmail.com * @Date: 2020/5/8 15:26 */ @Component // 配置缓存名称 @CacheConfig(cacheNames = "countries") public class CountryRepository { @Cacheable public Country findByCode(String code) { System.out.println("---> Loading country with code '" + code + "'"); return new Country(code); } }
CacheManagerCheck.java
package org.ouyushan.springboot.data.cache.check; /** * @Description: 获取缓存实现方式 * @Author: ouyushan * @Email: ouyushan@hotmail.com * @Date: 2020/5/8 15:24 */ import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.springframework.boot.CommandLineRunner; import org.springframework.cache.CacheManager; import org.springframework.stereotype.Component; @Component public class CacheManagerCheck implements CommandLineRunner { private static final Log logger = LogFactory.getLog(CacheManagerCheck.class); private final CacheManager cacheManager; public CacheManagerCheck(CacheManager cacheManager) { this.cacheManager = cacheManager; } @Override public void run(String... strings) throws Exception { logger.info(" " + "========================================================= " + "Using cache manager: " + this.cacheManager.getClass().getName() + " " + "========================================================= "); } }
CacheJob.java
package org.ouyushan.springboot.data.cache.schedule; import org.ouyushan.springboot.data.cache.dao.CountryRepository; import org.springframework.context.annotation.Profile; import org.springframework.scheduling.annotation.Scheduled; import org.springframework.stereotype.Component; import java.util.Arrays; import java.util.List; import java.util.Random; /** * @Description: 验证缓存的定时任务 * @Author: ouyushan * @Email: ouyushan@hotmail.com * @Date: 2020/5/8 15:33 */ @Component @Profile("app") public class CacheJob { private static final List<String> SAMPLE_COUNTRY_CODES = Arrays.asList("AF", "AX", "AL", "DZ", "AS", "AD", "AO", "AI", "AQ", "AG", "AR", "AM", "AW", "AU", "AT", "AZ", "BS", "BH", "BD", "BB", "BY", "BE", "BZ", "BJ", "BM", "BT", "BO", "BQ", "BA", "BW", "BV", "BR", "IO", "BN", "BG", "BF", "BI", "KH", "CM", "CA", "CV", "KY", "CF", "TD", "CL", "CN", "CX", "CC", "CO", "KM", "CG", "CD", "CK", "CR", "CI", "HR", "CU", "CW", "CY", "CZ", "DK", "DJ", "DM", "DO", "EC", "EG", "SV", "GQ", "ER", "EE", "ET", "FK", "FO", "FJ", "FI", "FR", "GF", "PF", "TF", "GA", "GM", "GE", "DE", "GH", "GI", "GR", "GL", "GD", "GP", "GU", "GT", "GG", "GN", "GW", "GY", "HT", "HM", "VA", "HN", "HK", "HU", "IS", "IN", "ID", "IR", "IQ", "IE", "IM", "IL", "IT", "JM", "JP", "JE", "JO", "KZ", "KE", "KI", "KP", "KR", "KW", "KG", "LA", "LV", "LB", "LS", "LR", "LY", "LI", "LT", "LU", "MO", "MK", "MG", "MW", "MY", "MV", "ML", "MT", "MH", "MQ", "MR", "MU", "YT", "MX", "FM", "MD", "MC", "MN", "ME", "MS", "MA", "MZ", "MM", "NA", "NR", "NP", "NL", "NC", "NZ", "NI", "NE", "NG", "NU", "NF", "MP", "NO", "OM", "PK", "PW", "PS", "PA", "PG", "PY", "PE", "PH", "PN", "PL", "PT", "PR", "QA", "RE", "RO", "RU", "RW", "BL", "SH", "KN", "LC", "MF", "PM", "VC", "WS", "SM", "ST", "SA", "SN", "RS", "SC", "SL", "SG", "SX", "SK", "SI", "SB", "SO", "ZA", "GS", "SS", "ES", "LK", "SD", "SR", "SJ", "SZ", "SE", "CH", "SY", "TW", "TJ", "TZ", "TH", "TL", "TG", "TK", "TO", "TT", "TN", "TR", "TM", "TC", "TV", "UG", "UA", "AE", "GB", "US", "UM", "UY", "UZ", "VU", "VE", "VN", "VG", "VI", "WF", "EH", "YE", "ZM", "ZW"); private final CountryRepository countryService; private final Random random; CacheJob(CountryRepository countryService) { this.countryService = countryService; this.random = new Random(); } @Scheduled(fixedDelay = 500) public void retrieveCountry() { String randomCode = SAMPLE_COUNTRY_CODES.get(this.random.nextInt(SAMPLE_COUNTRY_CODES.size())); System.out.println("Looking for country with code '" + randomCode + "'"); this.countryService.findByCode(randomCode); } }
SpringBootDataCacheApplication.java
package org.ouyushan.springboot.data.cache; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.boot.builder.SpringApplicationBuilder; import org.springframework.cache.annotation.EnableCaching; import org.springframework.scheduling.annotation.EnableScheduling; @EnableCaching @EnableScheduling @SpringBootApplication public class SpringBootDataCacheApplication { public static void main(String[] args) { new SpringApplicationBuilder().sources(SpringBootDataCacheApplication.class).profiles("app").run(args); } }
四、测试
运行以下测试用例
SpringBootDataCacheApplicationTests .java
package org.ouyushan.springboot.data.cache; import org.junit.jupiter.api.Test; import org.ouyushan.springboot.data.cache.dao.CountryRepository; import org.ouyushan.springboot.data.cache.entity.Country; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.cache.Cache; import org.springframework.cache.CacheManager; import static org.assertj.core.api.Assertions.assertThat; @SpringBootTest class SpringBootDataCacheApplicationTests { @Autowired private CacheManager cacheManager; @Autowired private CountryRepository countryRepository; @Test public void validateCache() { Cache countries = this.cacheManager.getCache("countries"); assertThat(countries).isNotNull(); countries.clear(); // Simple test assuming the cache is empty assertThat(countries.get("BE")).isNull(); Country be = this.countryRepository.findByCode("BE"); assertThat((Country) countries.get("BE").get()).isEqualTo(be); } }
或者更改application中的配置以及启动中的profile测试其他