苍穹外卖--SpringDataRedis针对redis中5种数据类型指令和通用指令的API操作

sky-server/src/test/java/com/sky/test/SpringDataRedisTest.java

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+package com.sky.test;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.data.redis.connection.DataType;
+import org.springframework.data.redis.core.*;
+
+import java.util.List;
+import java.util.Set;
+import java.util.concurrent.TimeUnit;
+
+@SpringBootTest
+public class SpringDataRedisTest {
+
+    @Autowired
+    private RedisTemplate redisTemplate;
+
+    @Test
+    public void testRedisTemplate(){
+        System.out.println(redisTemplate);
+        //字符串数据
+        ValueOperations valueOperations = redisTemplate.opsForValue();
+        //哈希数据
+        HashOperations hashOperations = redisTemplate.opsForHash();
+        //列表数据
+        ListOperations listOperations = redisTemplate.opsForList();
+        //集合数据
+        SetOperations setOperations = redisTemplate.opsForSet();
+        //有序集合数据
+        ZSetOperations zSetOperations = redisTemplate.opsForZSet();
+
+    }
+
+
+    //Spring Data Redis使用方式_操作字符串类型的数据
+    @Test
+    public void testString(){
+        //set get setex setnx
+        //set get
+        redisTemplate.opsForValue().set("city","常州");
+        /*
+        为何插入数据的时候是object，而不是java中的String呢？？redis存取数据时，会将java的对象调用toString转为redis中的字符串数据
+         */
+        String city = (String) redisTemplate.opsForValue().get("city");
+        //setex -- 计时保存key-value
+        redisTemplate.opsForValue().set("code","3306",10, TimeUnit.SECONDS);
+
+        //setnx-- 先判断是否有该key值，如果没有才保存
+        System.out.println(redisTemplate.opsForValue().setIfAbsent("age", "1"));
+        System.out.println(redisTemplate.opsForValue().setIfAbsent("age", "2"));
+    }
+
+
+    //Spring Data Redis使用方式_操作哈希类型的数据
+    @Test
+    public void testHash(){
+        //hset hget hdel hkeys hvals
+        HashOperations hashOperations = redisTemplate.opsForHash();
+        //hset
+        hashOperations.put("s100","name","tom");
+        hashOperations.put("s100","age","20");
+        //hget
+        String name = (String) hashOperations.get("s100", "name");
+        String age = (String) hashOperations.get("s100", "age");
+        System.out.println(name);
+        System.out.println(age);
+        //hkeys
+        Set keys = hashOperations.keys("s100");
+        System.out.println(keys);
+
+        //hvals
+        List values = hashOperations.values("s100");
+        System.out.println(values);
+        //hdel
+        hashOperations.delete("s100","age");
+
+    }
+
+    //---------------------------------------以下代码演示查看一下--------------------------------
+      /*
+    操作列表类型的数据
+    */
+    @Test
+    public void testList(){
+        //lpush lrange rpop llen
+        ListOperations listOperations = redisTemplate.opsForList();
+        //lpush
+        listOperations.leftPushAll("mylist", "a", "b", "c");
+        listOperations.leftPush("mylist", "d");
+        //lrange
+        List mylist = listOperations.range("mylist", 0, -1);
+        System.out.println(mylist);
+        //rpop
+        listOperations.rightPop("mylist");
+        //llen
+        Long size = listOperations.size("mylist");
+        System.out.println(size);
+    }
+
+
+    /*
+    操作集合类型的数据
+    */
+    @Test
+    public void testSet(){
+        //sadd smembers scard sinter sunion srem
+        SetOperations setOperations = redisTemplate.opsForSet();
+        //sadd
+        setOperations.add("set1", "a", "b", "c", "d");
+        setOperations.add("set2", "a", "b", "e", "f");
+        //smembers
+        Set members = setOperations.members("set1");
+        System.out.println(members);
+        //scard
+        Long size = setOperations.size("set1");
+        System.out.println(size);
+        //sinter
+        Set intersect = setOperations.intersect("set1", "set2");
+        System.out.println(intersect);
+        //sunion
+        Set union = setOperations.union("set1", "set2");
+        System.out.println(union);
+        //srem
+        setOperations.remove("set1", "a","b");
+    }
+
+
+    /*
+    操作有序集合类型的数据
+    */
+    @Test
+    public void testLinkedSet(){
+        //zadd zrange zincrby zrem
+        ZSetOperations zSetOperations = redisTemplate.opsForZSet();
+        //zadd
+        zSetOperations.add("zset1", "a", 10);
+        zSetOperations.add("zset1", "b", 12);
+        zSetOperations.add("zset1", "c", 15);
+        //zrange
+        Set zset1 = zSetOperations.range("zset1", 0, -1);
+        System.out.println(zset1);
+        //zincrby
+        zSetOperations.incrementScore("zset1", "b", 6);
+        //zrem
+        zSetOperations.remove("zset1", "b","c");
+
+        System.out.println(zSetOperations.range("zset1", 0, -1));
+    }
+
+
+    /*
+    通用命令操作
+    */
+    @Test
+    public void testCommon(){
+        //keys exists type del
+        //keys
+        Set keys = redisTemplate.keys("*");
+        System.out.println(keys);
+
+        //exists
+        Boolean isNameExists = redisTemplate.hasKey("name");
+        Boolean isSetExists = redisTemplate.hasKey("set1");
+
+        System.out.println(isNameExists);
+        System.out.println(isSetExists);
+
+        for (Object key : keys) {
+            //type
+            DataType type = redisTemplate.type(key);
+            System.out.println(key+"的类型："+type);
+        }
+
+        //del
+        redisTemplate.delete("mylist");
+    }
+
+}