springboot保存redis键值对出现乱码\xac\xed\x00\x05t\x00

当使用RedisTemplate进行操作时，发现保存的key带有特殊字符。原因是RedisTemplate默认处理key为对象，改为StringRedisTemplate后，能正确保存字符串key，避免了编码问题。

@SpringBootTest
class RedisApplicationTests {
 
    @Autowired
    private RedisTemplate redisTemplate;
 
    @Test
    void setOps() {
        ValueOperations ops = redisTemplate.opsForValue();
        ops.set("alaf","aheiluxing");
    }

127.0.0.1:6379> keys *
1) "\xe6\xac\xa7\xe5\x86\x85\xe7\x9a\x84\xe6\x89\x8b"
2) "\xac\xed\x00\x05t\x00\x06myname"

通过上述方式保存key就会生成带有 \xac\xed\x00\x05t\x00的key，这是因为RedisTemplate创建的key是一个对象，我们创建的时候key值通常是一个字符串，所以只要把redisTemplate类型改为StringRedisTemplate就行了

@SpringBootTest
class RedisApplicationTests {
 
    @Autowired
    private StringRedisTemplate redisTemplate; //此处的RedisTemplate改为了StringRedisTemplate
 
    @Test
    void setOps() {
        ValueOperations ops = redisTemplate.opsForValue();
        ops.set("alaf","aheiluxing");
    }

附一个RedisUtils类：

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.dao.DataAccessException;
import org.springframework.data.redis.connection.RedisConnection;
import org.springframework.data.redis.core.*;
import org.springframework.stereotype.Component;
import java.util.*;
import java.util.concurrent.TimeUnit;



/**
 * @author Administrator
 */
@Component
public class RedisUtils {

    @Autowired
    private StringRedisTemplate redisTemplate;

    public RedisUtil(StringRedisTemplate redisTemplate) {
        this.redisTemplate = redisTemplate;
    }

    /**
     * 写入缓存
     *
     * @param key   redis键
     * @param value redis值
     * @return 是否成功
     */
    public boolean set(final String key, String value) {
        boolean result = false;
        try {
            ValueOperations<String, String> operations = redisTemplate.opsForValue();
            operations.set(key, value);
            result = true;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }


    /**
     * 写入缓存设置时效时间
     *
     * @param key   redis键
     * @param value redis值
     * @return 是否成功
     */
    public boolean set(final String key, String value, Long expireTime) {
        boolean result = false;
        try {
            ValueOperations<String, String> operations = redisTemplate.opsForValue();
            operations.set(key, value);
            redisTemplate.expire(key, expireTime, TimeUnit.SECONDS);
            result = true;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }

    /**
     * 批量删除对应的键值对
     *
     * @param keys Redis键名数组
     */
    public void removeByKeys(final String... keys) {
        for (String key : keys) {
            remove(key);
        }
    }

    /**
     * 批量删除Redis key
     *
     * @param pattern 键名包含字符串（如：myKey*）
     */
    public void removePattern(final String pattern) {
        Set<String> keys = redisTemplate.keys(pattern);
        if (keys != null && keys.size() > 0) {
            redisTemplate.delete(keys);
        }
    }

    /**
     * 删除key,也删除对应的value
     *
     * @param key Redis键名
     */
    public void remove(final String key) {
        if (exists(key)) {
            redisTemplate.delete(key);
        }
    }

    /**
     * 判断缓存中是否有对应的value
     *
     * @param key Redis键名
     * @return 是否存在
     */
    public Boolean exists(final String key) {
        return redisTemplate.hasKey(key);
    }

    /**
     * 读取缓存
     *
     * @param key Redis键名
     * @return 是否存在
     */
    public String get(final String key) {
        String result = null;
        ValueOperations<String, String> operations = redisTemplate.opsForValue();
        result = operations.get(key);
        return result;
    }

    /**
     * 哈希 添加
     *
     * @param key     Redis键
     * @param hashKey 哈希键
     * @param value   哈希值
     */
    public void hmSet(String key, String hashKey, String value) {
        HashOperations<String, String, String> hash = redisTemplate.opsForHash();
        hash.put(key, hashKey, value);
    }

    /**
     * 哈希获取数据
     *
     * @param key     Redis键
     * @param hashKey 哈希键
     * @return 哈希值
     */
    public String hmGet(String key, String hashKey) {
        HashOperations<String, String, String> hash = redisTemplate.opsForHash();
        return hash.get(key, hashKey);
    }

    /**
     * 判断hash是否存在键
     *
     * @param key     Redis键
     * @param hashKey 哈希键
     * @return 是否存在
     */
    public boolean hmHasKey(String key, String hashKey) {
        HashOperations<String, String, String> hash = redisTemplate.opsForHash();
        return hash.hasKey(key, hashKey);
    }

    /**
     * 删除hash中一条或多条数据
     *
     * @param key      Redis键
     * @param hashKeys 哈希键名数组
     * @return 删除数量
     */
    public long hmRemove(String key, String... hashKeys) {
        HashOperations<String, String, String> hash = redisTemplate.opsForHash();
        return hash.delete(key, hashKeys);
    }

    /**
     * 获取所有哈希键值对
     *
     * @param key Redis键名
     * @return 哈希Map
     */
    public Map<String, String> hashMapGet(String key) {
        HashOperations<String, String, String> hash = redisTemplate.opsForHash();
        return hash.entries(key);
    }

    /**
     * 保存Map到哈希
     *
     * @param key Redis键名
     * @param map 哈希Map
     */
    public void hashMapSet(String key, Map<String, String> map) {
        HashOperations<String, String, String> hash = redisTemplate.opsForHash();
        hash.putAll(key, map);
    }

    /**
     * 列表-追加值
     *
     * @param key   Redis键名
     * @param value 列表值
     */
    public void lPush(String key, String value) {
        ListOperations<String, String> list = redisTemplate.opsForList();
        list.rightPush(key, value);
    }

    /**
     * 列表-获取指定范围数据
     *
     * @param key   Redis键名
     * @param start 开始行号
     * @param end   结束行号
     * @return 列表
     */
    public List<String> lRange(String key, long start, long end) {
        ListOperations<String, String> list = redisTemplate.opsForList();
        return list.range(key, start, end);
    }

    /**
     * 集合添加
     *
     * @param key   Redis键名
     * @param value 值
     */
    public void add(String key, String value) {
        SetOperations<String, String> set = redisTemplate.opsForSet();
        set.add(key, value);
    }

    /**
     * 集合获取
     *
     * @param key Redis键名
     * @return 集合
     */
    public Set<String> setMembers(String key) {
        SetOperations<String, String> set = redisTemplate.opsForSet();
        return set.members(key);
    }

    /**
     * 有序集合添加
     *
     * @param key   Redis键名
     * @param value 值
     * @param score 排序号
     */
    public void zAdd(String key, String value, double score) {
        ZSetOperations<String, String> zSet = redisTemplate.opsForZSet();
        zSet.add(key, value, score);
    }

    /**
     * 有序集合-获取指定范围
     *
     * @param key        Redis键
     * @param startScore 开始序号
     * @param endScore   结束序号
     * @return 集合
     */
    public Set<String> rangeByScore(String key, double startScore, double endScore) {
        ZSetOperations<String, String> zset = redisTemplate.opsForZSet();
        return zset.rangeByScore(key, startScore, endScore);
    }

    /**
     * 模糊查询Redis键名
     *
     * @param pattern 键名包含字符串（如：myKey*）
     * @return 集合
     */
    public Set<String> keys(String pattern) {
        return redisTemplate.keys(pattern);
    }

    /**
     * 获取多个hashMap
     *
     * @param keySet
     * @return List<Map < String, String>> hashMap列表
     */
    public List hashMapList(Collection<String> keySet) {
        return redisTemplate.executePipelined(new SessionCallback<String>() {
            @Override
            public <K, V> String execute(RedisOperations<K, V> operations) throws DataAccessException {
                HashOperations hashOperations = operations.opsForHash();
                for (String key : keySet) {
                    hashOperations.entries(key);
                }
                return null;
            }
        });
    }

    /**
     * 保存多个哈希表（HashMap）(Redis键名不可以重复)
     *
     * @param dataMap Map<Redis键名,Map<哈希键,哈希值>>
     */
    public void batchHashMapSet(Map<String, Map<String, String>> dataMap) {
        // 设置5秒超时时间
        redisTemplate.expire("max", 25, TimeUnit.SECONDS);
        redisTemplate.executePipelined(new RedisCallback<List<Map<String, String>>>() {

            @Override
            public List<Map<String, String>> doInRedis(RedisConnection connection) throws DataAccessException {
                Iterator<Map.Entry<String, Map<String, String>>> iterator = dataMap.entrySet().iterator();
                while (iterator.hasNext()) {
                    Map.Entry<String, Map<String, String>> hash = iterator.next();
                    // 哈希名,即表名
                    byte[] hashName = redisTemplate.getStringSerializer().serialize(hash.getKey());
                    Map<String, String> hashValues = hash.getValue();
                    Iterator<Map.Entry<String, String>> it = hashValues.entrySet().iterator();
                    // 将元素序列化后缓存，即表的多条哈希记录
                    Map<byte[], byte[]> hashes = new HashMap<byte[], byte[]>();
                    while (it.hasNext()) {
                        // hash中一条key-value记录
                        Map.Entry<String, String> entry = it.next();
                        byte[] key = redisTemplate.getStringSerializer().serialize(entry.getKey());
                        byte[] value = redisTemplate.getStringSerializer().serialize(entry.getValue());
                        hashes.put(key, value);
                    }
                    // 批量保存
                    connection.hMSet(hashName, hashes);
                }
                return null;
            }
        });
    }

    /**
     * 保存多个哈希表（HashMap）列表（哈希map的Redis键名不能重复）
     *
     * @param list Map<Redis键名,Map<哈希键,哈希值>>
     * @see RedisUtils*.batchHashMapSet()*
     */
    public void batchHashMapListSet(List<Map<String, Map<String, String>>> list) {
        // 设置5秒超时时间
        redisTemplate.expire("max", 25, TimeUnit.SECONDS);
        redisTemplate.executePipelined(new RedisCallback<List<Map<String, String>>>() {

            @Override
            public List<Map<String, String>> doInRedis(RedisConnection connection) throws DataAccessException {
                for (Map<String, Map<String, String>> dataMap : list) {
                    Iterator<Map.Entry<String, Map<String, String>>> iterator = dataMap.entrySet().iterator();
                    while (iterator.hasNext()) {
                        Map.Entry<String, Map<String, String>> hash = iterator.next();
                        // 哈希名,即表名
                        byte[] hashName = redisTemplate.getStringSerializer().serialize(hash.getKey());
                        Map<String, String> hashValues = hash.getValue();
                        Iterator<Map.Entry<String, String>> it = hashValues.entrySet().iterator();
                        // 将元素序列化后缓存，即表的多条哈希记录
                        Map<byte[], byte[]> hashes = new HashMap<byte[], byte[]>();
                        while (it.hasNext()) {
                            // hash中一条key-value记录
                            Map.Entry<String, String> entry = it.next();
                            byte[] key = redisTemplate.getStringSerializer().serialize(entry.getKey());
                            byte[] value = redisTemplate.getStringSerializer().serialize(entry.getValue());
                            hashes.put(key, value);
                        }
                        // 批量保存
                        connection.hMSet(hashName, hashes);
                    }
                }
                return null;
            }
        });
    }

    /**
     * 消息的发布
     * @param channel   键
     * @param msg 值
     */
    public void publish(String channel, String msg) {
        redisTemplate.convertAndSend(channel, msg);
    }
}