Spring Boot Sample 020之spring-boot-data-cache

一、环境

• Idea 2020.1
• JDK 1.8
• maven

二、目的

spring boot整合cache

gitHub地址： https://github.com/ouyushan/ouyushan-spring-boot-samples

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("\n\n" + "=========================================================\n" + "Using cache manager: "
                + this.cacheManager.getClass().getName() + "\n"
                + "=========================================================\n\n");
    }

}

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

来源：oschina

链接：https://my.oschina.net/ouyushan/blog/4303867