spring-boot构建项目
1、依赖包

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-cache</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.9.8</version>
        </dependency>

    </dependencies>

2、application.yml 配置你的redis数据库

  redis:
    host: 10.118.62.19
    port: 6379
    database: 9
    password: 123456
    jedis:
      pool:
        max-active: 100
        max-idle: 100
        max-wait: 1000ms
        min-idle: 10

3、在启动类添加@EnableCaching

@EnableCaching
public class SpringbootRedisCacheApplication {
    @Bean
    public RedisCacheConfiguration redisCacheConfiguration(){
        RedisCacheConfiguration configuration = RedisCacheConfiguration.defaultCacheConfig();
        configuration = configuration.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericJackson2JsonRedisSerializer()));
        return configuration;

    }
    public static void main(String[] args) {
        SpringApplication.run(SpringbootRedisCacheApplication.class, args);
    }

}

4、创建类EmpService

@Service
public class EmpService {
    /**
     *
     * @param empId
     * @return
     * Cacheable会将方法的返回值序列化后存储到redis中key就是参数执行的字符串
     * Cacheable的用途就是在执行方法前检查对应的key是否存在 ，存在则直接从redis中取出 不执行方法中代码
     * condition 代表条件成立的时候才会执行方法中的代码
     */
    @Cacheable(value = "emp1",key = "#empId",condition = "#empId !=1000")
    public Emp findById(Integer empId){
        System.out.println("执行了empById方法："+empId);
        return new Emp(empId,"laohan",new Date(),1000f,"研发");
    }

    @Cacheable(value = "emp:rank:salary")
    public List<Emp> getEmpList(){
        System.out.println("缓存数据！");
        List list = new ArrayList();
        for(int i=0;i<10;i++){
            list.add(new Emp(i,"emp"+i,new Date(),200f,"部门"));
        }
        return list;
    }
    //CachePut不管redis是否存在key都对数据进行更新
    @CachePut(value = "emp",key = "#emp.empNo")
    public Emp create(Emp emp){
        System.out.println("正在创建"+emp.getEmpNo()+"员工信息");
        return emp;
    }
    @CachePut(value = "emp",key = "#emp.empNo")
    public Emp update(Emp emp){
        System.out.println("正在更新"+emp.getEmpNo()+"员工信息");
        return emp;
    }
    //删除缓存 key 与redis对应
    @CacheEvict(value="emp" , key = "#empNo")
    public void delete(Integer empNo){
        System.out.println("删除" + empNo + "员工信息");
    }
}
 

5、测试

@RunWith(SpringRunner.class)
@SpringBootTest
public class SpringbootRedisCacheApplicationTests {
    @Resource
    private EmpService empService;


    @Test
    public void testEmp(){
        Emp emp = empService.findById(1000);
        System.out.println(emp.toString());
    }

    @Test
    public void  testGet(){
        List<Emp> empList = empService.getEmpList();
        System.out.println(empList);

    }
    @Test
    public void testCreate(){
        empService.create(new Emp(1002,"emp"+new Date().getTime(),new Date(),1234f,"市场"));
        //调用更新用户名
        empService.update(new Emp(1002,"u-emp"+new Date().getTime(),new Date(),1234f,"市场"));
    }
    @Test
    public void testDel(){
        System.out.println("删除员工信息");
        empService.delete(1002);
    }

}

6、实体类Emp

public class Emp implements Serializable {
    private Integer empNo;
    private String name;
    private Date birthday;
    private Float salary;
    private String department;

    public Emp() {
    }

    public Emp(Integer empNo, String name, Date birthday, Float salary, String department) {
        this.empNo = empNo;
        this.name = name;
        this.birthday = birthday;
        this.salary = salary;
        this.department = department;
    }

    public Integer getEmpNo() {
        return empNo;
    }

    public void setEmpNo(Integer empNo) {
        this.empNo = empNo;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Date getBirthday() {
        return birthday;
    }

    public void setBirthday(Date birthday) {
        this.birthday = birthday;
    }

    public Float getSalary() {
        return salary;
    }

    public void setSalary(Float salary) {
        this.salary = salary;
    }

    public String getDepartment() {
        return department;
    }

    public void setDepartment(String department) {
        this.department = department;
    }

    @Override
    public String toString() {
        return "Emp{" +
                "empNo=" + empNo +
                ", name='" + name + '\'' +
                ", birthday=" + birthday +
                ", salary=" + salary +
                ", department='" + department + '\'' +
                '}';
    }
}