14.Redis之JAVASpring客户端

1.引入依赖

此时就会引入操作 redis 的依赖了~~ 

2.yml配置

spring:
  redis:
    host: 127.0.0.1
    port: 8888

3.准备

• 前面使用 jedis,是通过 Jedis 对象里的各种方法来操作 redis 的.
• 此处Spring 中则是通过 StringRedisTemplate 来操作 redis .
• 最原始提供的类是 RedisTemplate
• StringRedisTemplate 是 RedisTemplate 的子类, 专门用来处理 文本数据的
• 这个类提供的方法,相比于之前的 Jedis 中的各种方法,还是存在较大的差异的!!
• 
• 

  4.代码 

  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.data.redis.connection.RedisConnection;
  import org.springframework.data.redis.core.StringRedisTemplate;
  import org.springframework.data.redis.core.ZSetOperations;
  import org.springframework.web.bind.annotation.GetMapping;
  import org.springframework.web.bind.annotation.ResponseBody;
  import org.springframework.web.bind.annotation.RestController;
  import java.util.Set;
  // 后续 redis 测试的各种方法, 都通过这个 Controller 提供的 http 接口来触发.
  @RestController
  public class MyController {
      @Autowired
      private StringRedisTemplate redisTemplate;
      @GetMapping("/testString")
      @ResponseBody
      public String testString() {
          redisTemplate.execute((RedisConnection connection) -> {
              // execute 要求回调方法中必须写 return 语句. 返回个东西.
              // 这个回调返回的对象, 就会作为 execute 本身的返回值.
              connection.flushAll();
              return null;
          });
          redisTemplate.opsForValue().set("key", "111");
          redisTemplate.opsForValue().set("key2", "222");
          redisTemplate.opsForValue().set("key3", "333");
          String value = redisTemplate.opsForValue().get("key");
          System.out.println("value: " + value);
          return "OK";
      }
      @GetMapping("/testList")
      @ResponseBody
      public String testList() {
          // 先清除之前的数据.
          redisTemplate.execute((RedisConnection connection) -> {
              // execute 要求回调方法中必须写 return 语句. 返回个东西.
              // 这个回调返回的对象, 就会作为 execute 本身的返回值.
              connection.flushAll();
              return null;
          });
          redisTemplate.opsForList().leftPush("key", "111");
          redisTemplate.opsForList().leftPush("key", "222");
          redisTemplate.opsForList().leftPush("key", "333");
          String value = redisTemplate.opsForList().rightPop("key");
          System.out.println("value: " + value);
          value = redisTemplate.opsForList().rightPop("key");
          System.out.println("value: " + value);
          value = redisTemplate.opsForList().rightPop("key");
          System.out.println("value: " + value);
          return "OK";
      }
      @GetMapping("/testSet")
      @ResponseBody
      public String testSet() {
          redisTemplate.execute((RedisConnection connection) -> {
              connection.flushAll();
              return null;
          });
          redisTemplate.opsForSet().add("key", "111", "222", "333");
          Set result = redisTemplate.opsForSet().members("key");
          System.out.println("result: " + result);
          Boolean exists = redisTemplate.opsForSet().isMember("key", "111");
          System.out.println("exists: " + exists);
          Long count = redisTemplate.opsForSet().size("key");
          System.out.println("count: " + count);
          redisTemplate.opsForSet().remove("key", "111", "222");
          result = redisTemplate.opsForSet().members("key");
          System.out.println("result: " + result);
          return "OK";
      }
      @GetMapping("/testHash")
      @ResponseBody
      public String testHash() {
          redisTemplate.execute((RedisConnection connection) -> {
              connection.flushAll();
              return null;
          });
          redisTemplate.opsForHash().put("key", "f1", "111");
          redisTemplate.opsForHash().put("key", "f2", "222");
          redisTemplate.opsForHash().put("key", "f3", "333");
          String value = (String) redisTemplate.opsForHash().get("key", "f1");
          System.out.println("value: " + value);
          Boolean exists = redisTemplate.opsForHash().hasKey("key", "f1");
          System.out.println("exists: " + exists);
          redisTemplate.opsForHash().delete("key", "f1", "f2");
          Long size = redisTemplate.opsForHash().size("key");
          System.out.println("size: " + size);
          return "OK";
      }
      @GetMapping("/testZSet")
      @ResponseBody
      public String testZSet() {
          redisTemplate.execute((RedisConnection connection) -> {
              connection.flushAll();
              return null;
          });
          redisTemplate.opsForZSet().add("key", "zhangsan", 10);
          redisTemplate.opsForZSet().add("key", "lisi", 20);
          redisTemplate.opsForZSet().add("key", "wangwu", 30);
          Set members = redisTemplate.opsForZSet().range("key", 0, -1);
          System.out.println("members: " + members);
          Set membersWithScore = redisTemplate.opsForZSet().rangeWithScores("key", 0, -1);
          System.out.println("membersWithScore: " + membersWithScore);
          Double score = redisTemplate.opsForZSet().score("key", "zhangsan");
          System.out.println("score: " + score);
          redisTemplate.opsForZSet().remove("key", "zhangsan");
          Long size = redisTemplate.opsForZSet().size("key");
          System.out.println("size: " + size);
          Long rank = redisTemplate.opsForZSet().rank("key", "lisi");
          System.out.println("rank: " + rank);
          return "OK";
      }
  }
  

  5.测试

  

  Spring Data Redis 中文文档 (springdoc.cn)