Spring Boot缓存实战 EhCache示例

<dependencies>  <dependency>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter-web</artifactId>  </dependency>  <dependency>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter-data-jpa</artifactId>  </dependency>  <dependency>    <groupId>mysql</groupId>    <artifactId>mysql-connector-java</artifactId>  </dependency>  <dependency>    <groupId>org.apache.commons</groupId>    <artifactId>commons-dbcp2</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></dependencies>

<?xml version="1.0" encoding="UTF-8"?><ehcache>  <cache name="people" maxElementsInMemory="1000"/></ehcache>

spring.cache.ehcache.config= # ehcache配置文件地址

package com.xiaolyuh.service.impl;import com.xiaolyuh.entity.Person;import com.xiaolyuh.repository.PersonRepository;import com.xiaolyuh.service.PersonService;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.cache.annotation.CacheEvict;import org.springframework.cache.annotation.CachePut;import org.springframework.cache.annotation.Cacheable;import org.springframework.stereotype.Service;@Servicepublic class PersonServiceImpl implements PersonService {  @Autowired  PersonRepository personRepository;  @Override  @CachePut(value = "people", key = "#person.id")  public Person save(Person person) {    Person p = personRepository.save(person);    System.out.println("为id、key为:" + p.getId() + "数据做了缓存");    return p;  }  @Override  @CacheEvict(value = "people")//2  public void remove(Long id) {    System.out.println("删除了id、key为" + id + "的数据缓存");    //这里不做实际删除操作  }  @Override  @Cacheable(value = "people", key = "#person.id")//3  public Person findOne(Person person) {    Person p = personRepository.findOne(person.getId());    System.out.println("为id、key为:" + p.getId() + "数据做了缓存");    return p;  }}

package com.xiaolyuh.controller;import com.xiaolyuh.entity.Person;import com.xiaolyuh.service.PersonService;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.cache.CacheManager;import org.springframework.web.bind.annotation.RequestBody;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;@RestControllerpublic class CacheController {  @Autowired  PersonService personService;  @Autowired  CacheManager cacheManager;  @RequestMapping("/put")  public long put(@RequestBody Person person) {    Person p = personService.save(person);    return p.getId();  }  @RequestMapping("/able")  public Person cacheable(Person person) {    System.out.println(cacheManager.toString());    return personService.findOne(person);  }  @RequestMapping("/evit")  public String evit(Long id) {    personService.remove(id);    return "ok";  }}

@SpringBootApplication@EnableCaching// 开启缓存，需要显示的指定public class SpringBootStudentCacheApplication {  public static void main(String[] args) {    SpringApplication.run(SpringBootStudentCacheApplication.class, args);  }}

package com.xiaolyuh;import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;import java.util.HashMap;import java.util.Map;import org.junit.Before;import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.boot.test.context.SpringBootTest;import org.springframework.http.MediaType;import org.springframework.test.context.junit4.SpringRunner;import org.springframework.test.web.servlet.MockMvc;import org.springframework.test.web.servlet.MvcResult;import org.springframework.test.web.servlet.setup.MockMvcBuilders;import org.springframework.web.context.WebApplicationContext;import net.minidev.json.JSONObject;@RunWith(SpringRunner.class)@SpringBootTestpublic class SpringBootStudentCacheApplicationTests {  @Test  public void contextLoads() {  }  private MockMvc mockMvc; // 模拟MVC对象，通过MockMvcBuilders.webAppContextSetup(this.wac).build()初始化。  @Autowired  private WebApplicationContext wac; // 注入WebApplicationContext //  @Autowired //  private MockHttpSession session;// 注入模拟的http session //   //  @Autowired //  private MockHttpServletRequest request;// 注入模拟的http request/   @Before // 在测试开始前初始化工作   public void setup() {    this.mockMvc = MockMvcBuilders.webAppContextSetup(this.wac).build();  }  @Test  public void testAble() throws Exception {    for (int i = 0; i < 2; i++) {      MvcResult result = mockMvc.perform(post("/able").param("id", "2"))          .andExpect(status().isOk())// 模拟向testRest发送get请求          .andExpect(content().contentType(MediaType.APPLICATION_JSON_UTF8))// 预期返回值的媒体类型text/plain;          // charset=UTF-8          .andReturn();// 返回执行请求的结果      System.out.println(result.getResponse().getContentAsString());    }  }}