SpringBoot2.1.X 整合redis

我不是女神ヾ 2024-04-19 10:14 89阅读 0赞

**实战步骤：**

1、官网：https://docs.spring.io/spring-boot/docs/2.1.8.BUILD-SNAPSHOT/reference/htmlsingle/#boot-features-redis
    集群文档：https://docs.spring.io/spring-data/data-redis/docs/current/reference/html/#cluster
    
    2、springboot整合redis相关依赖引入
    			<dependency>
    	            <groupId>org.springframework.boot</groupId>
    	            <artifactId>spring-boot-starter-data-redis</artifactId>
    	        </dependency>
    	    
     3、配置文件配置在application.properties
     #=========redis基础配置=========
    spring.redis.database=0
    spring.redis.host=127.0.0.1
    spring.redis.port=6379
    # 连接超时时间 单位 ms（毫秒）
    spring.redis.timeout=3000
    
    #=========redis线程池设置=========
    # 连接池中的最大空闲连接，默认值也是8。
    spring.redis.pool.max-idle=200
    
    #连接池中的最小空闲连接，默认值也是0。
    spring.redis.pool.min-idle=200
    
    # 如果赋值为-1，则表示不限制；pool已经分配了maxActive个jedis实例，则此时pool的状态为exhausted(耗尽)。
    spring.redis.pool.max-active=2000
    
    # 等待可用连接的最大时间，单位毫秒，默认值为-1，表示永不超时
    spring.redis.pool.max-wait=1000
    
    4、常见StirngRedisTemplate类和缓存实操(使用自动注入)
    
       1、注入模板
    	@Autowired
    	private StirngRedisTemplate strTplRedis
    
       2、类型String，List,Hash,Set,ZSet
    	对应的方法分别是opsForValue()、opsForList()、opsForHash()、opsForSet()、opsForZSet()

**工程结构图**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hseDIwMDgwODA4_size_16_color_FFFFFF_t_70][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hseDIwMDgwODA4_size_16_color_FFFFFF_t_70 1][]

简单的RedisController类

@RestController
    @RequestMapping("/redis/my")
    public class RedisController {
    
        /**
         * 注入redis字符串模板类
         */
        @Autowired
        private StringRedisTemplate template;
    
        @GetMapping("save")
        public Object save(){
    
            //ValueOperations<K, V>
            //保存数据
            template.opsForValue().set("names","actor or actress");
            return JsonData.buildSuccess();
        }
        @GetMapping("get")
        public Object get(){
    
            //获得数据
            Object data =template.opsForValue().get("names");
            return JsonData.buildSuccess(data);
        }
    }

**效果1:**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hseDIwMDgwODA4_size_16_color_FFFFFF_t_70 2][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hseDIwMDgwODA4_size_16_color_FFFFFF_t_70 3][]

**简单的RedisController2类**

@RestController
    @RequestMapping("/redis2/my")
    public class Redis2Controller {
    
        /**
         * 注入redis字符串模板类
         */
        @Autowired
        private RedisClient template;
    
        @GetMapping("save")
        public Object save(){
    
            //保存数据
            template.set("names0","comedy");
            return JsonData.buildSuccess();
        }
        @GetMapping("get")
        public Object get(){
    
            //获得数据
            Object data =template.get("names0");
            return JsonData.buildSuccess(data);
        }
    
    
        @GetMapping("adduser")
        public Object saveUser(){
             //1.对象封装
            User user = new User(1,"baby","狒狒","000001",1 ,new Date());
             //2.将对象转换成字符串
             String str= JsonUtils.obj2String(user);
            //3.保存数据
             boolean flag=template.set("user",str);
             //4.返回
            return JsonData.buildSuccess(flag);
        }
    
        @GetMapping("getuser")
        public Object getUser(){
    
            //1.获得数据
            String data =template.get("user");
    
            //2.将字符串转换成对象
            User user=  JsonUtils.string2Obj(data,User.class);
    
            //3.返回数据
            return JsonData.buildSuccess(user);
        }
    }

**JsonUtils公共类：**

package net.hlx.myspringboot.redis_demo.utils;
    
    import java.io.IOException;
    
    import org.springframework.util.StringUtils;
    
    import com.fasterxml.jackson.databind.ObjectMapper;
    
    /**
     * JSON工具类
     */
    public class JsonUtils {
    
        //实例化对象
        private static ObjectMapper objectMapper = new ObjectMapper();
        
        //对象转字符串
        public static <T> String obj2String(T obj){
            if (obj == null){
                return null;
            }
            try {
                return obj instanceof String ? (String) obj : objectMapper.writeValueAsString(obj);
            } catch (Exception e) {
                e.printStackTrace();
                return null;
            }
        }
        
        //字符串转对象
        public static <T> T string2Obj(String str,Class<T> clazz){
            if (StringUtils.isEmpty(str) || clazz == null){
                return null;
            }
            try {
                return clazz.equals(String.class)? (T) str :objectMapper.readValue(str,clazz);
            } catch (IOException e) {
                e.printStackTrace();
                return null;
            }
        }
    }

**RedisClient 封装成公共类**

package net.hlx.myspringboot.redis_demo.utils;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.data.redis.core.StringRedisTemplate;
    import org.springframework.stereotype.Component;
    
    /**
     * 功能描述：redis工具类
     */
    @Component
    public class RedisClient {
    
    	
    	
    	@Autowired
    	private StringRedisTemplate redisTpl; //redis模板类
    
    	
    	
    	/**
    	 * 功能描述：设置key-value到redis中
    	 * @param key
    	 * @param value
    	 * @return
    	 */
    	public boolean set(String key ,String value){
    		try{
    			redisTpl.opsForValue().set(key, value);
    			return true;
    		}catch(Exception e){
    			e.printStackTrace();
    			return false;
    		}
    		
    	}
    	
    	
    	/**
    	 * 功能描述：通过key获取缓存里面的值
    	 * @param key
    	 * @return
    	 */
    	public String get(String key){
    		return redisTpl.opsForValue().get(key);
      }
    	    
    }

效果2：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hseDIwMDgwODA4_size_16_color_FFFFFF_t_70 4][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hseDIwMDgwODA4_size_16_color_FFFFFF_t_70 5][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hseDIwMDgwODA4_size_16_color_FFFFFF_t_70 6][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hseDIwMDgwODA4_size_16_color_FFFFFF_t_70 7][]

可以做个测试类测试：

![20190917101311287.png][]

@RunWith(SpringRunner.class)  //底层用junit  SpringJUnit4ClassRunner
    @SpringBootTest   //启动整个springboot工程
    public class RedisDemoApplicationTests {
    
    
        @Autowired
        private RedisClient redisClient;
    
        @Test
        public void contextLoads() {
             User user = new User("your","政府","1234456",1 ,new Date());
             String str= JsonUtils.obj2String(user);
             //保存为字符串哦
             boolean flag= redisClient.set("user1",str);
             System.out.println(flag);
        }
    
    }

**效果：**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hseDIwMDgwODA4_size_16_color_FFFFFF_t_70 8][]

![20190917101339218.png][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hseDIwMDgwODA4_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20190917100257392.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hseDIwMDgwODA4,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hseDIwMDgwODA4_size_16_color_FFFFFF_t_70 1]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/18/a726b67edd2b4a33874b94d77b12b1b8.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hseDIwMDgwODA4_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20190917100431367.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hseDIwMDgwODA4,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hseDIwMDgwODA4_size_16_color_FFFFFF_t_70 3]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/18/9126fdb1e0ec494ca0fe38d4b878be37.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hseDIwMDgwODA4_size_16_color_FFFFFF_t_70 4]: https://img-blog.csdnimg.cn/20190917101111669.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hseDIwMDgwODA4,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hseDIwMDgwODA4_size_16_color_FFFFFF_t_70 5]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/18/a26aa5cf15f141e3b2682ee232f92532.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hseDIwMDgwODA4_size_16_color_FFFFFF_t_70 6]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/18/138d6e933c6e49b5b91a0fb113c9822d.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hseDIwMDgwODA4_size_16_color_FFFFFF_t_70 7]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/18/f7878583c7a34d7e821f259f642a3033.png
[20190917101311287.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/18/1b755b133f714c7a924be46ef020f931.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hseDIwMDgwODA4_size_16_color_FFFFFF_t_70 8]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/18/e2492f34d79241339cb2a0ed99f6312f.png
[20190917101339218.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/18/44dde79b3af54cea9a70e9003f729600.png