最近在學習redis，使用spring-data-redis的RedisTemplate.delete()方法刪除時，添加是成功的，但是不能刪除。

代碼如下

public abstract class AbstractBaseRedisDao {

@Autowired

protected RedisTemplate redisTemplate;

// public void setRedisTemplate(RedisTemplate redisTemplate) {

// this.redisTemplate = redisTemplate;

// }

public RedisSerializer getRedisSerializer() {

return redisTemplate.getStringSerializer();

}

}

public interface IUserDao {

boolean add(User user);

void delete(String key);

void delete(List keys);

User get(String keyId);

}

@Service

public class UserDao extends AbstractBaseRedisDao implements IUserDao {

public boolean add(final User user) {

boolean result = redisTemplate.execute(new RedisCallback() {

public Boolean doInRedis(RedisConnection redisConnection) throws DataAccessException {

RedisSerializer serializer = getRedisSerializer();

byte[] key = serializer.serialize(user.getId());

byte[] name = serializer.serialize(user.getName());

return redisConnection.setNX(key, name);

}

});

return result;

}

public void delete(String key) {

List list = new ArrayList();

list.add(key);

delete(list);

}

public void delete(List keys) {

redisTemplate.delete(keys);

}

public User get(final String keyId) {

User result = redisTemplate.execute(new RedisCallback() {

public User doInRedis(RedisConnection redisConnection) throws DataAccessException {

RedisSerializer serializer = getRedisSerializer();

byte[] key = serializer.serialize(keyId);

byte[] value = redisConnection.get(key);

if (value == null) {

return null;

}

String name = serializer.deserialize(value);

return new User(keyId, name, null);

}

});

return result;

}

}

配置如下：

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xmlns:context="http://www.springframework.org/schema/context"

xmlns:p="http://www.springframework.org/schema/p"

xsi:schemaLocation="http://www.springframework.org/schema/beans

http://www.springframework.org/schema/beans/spring-beans.xsd

http://www.springframework.org/schema/context

http://www.springframework.org/schema/context/spring-context.xsd">

p:hostName="${redis.host}" p:port="${redis.port}" p:password="${redis.pass}" p:poolConfig-ref="poolConfig" />

測試用例：

public class RedisTest {

private IUserDao userDao;

@Before

public void init() {

ApplicationContext ctx = new ClassPathXmlApplicationContext("case1/applicationContext.xml");

userDao = (IUserDao) ctx.getBean("userDao");

}

@Test

public void testAddUser() {

User user = new User();

user.setId("B");

user.setName("B");

boolean result = userDao.add(user);

Assert.assertTrue(result);

}

@Test

public void testDelete() {

String key = "B";

User user = userDao.get(key);

System.out.println("刪除前：" + user);

userDao.delete(key);

user = userDao.get(key);

System.out.println("刪除后：" + user);

}

}

總結

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