springboot使用protostuff进行序列化和反序列化整合redis的redisTemplate的各种方法的写法

1.加入gogole提供的工具包(序列化会用到)+redis包<!-- 工具库 -->
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>18.0</version>
</dependency>

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>

<!-- 序列化 -->
<dependency>
<groupId>com.dyuproject.protostuff</groupId>
<artifactId>protostuff-core</artifactId>
<version>1.1.3</version>
</dependency>
<dependency>
<groupId>com.dyuproject.protostuff</groupId>
<artifactId>protostuff-runtime</artifactId>
<version>1.1.3</version>
</dependency>

2.自己编写序列化工具@Slf4j
public class ProtoStuffUtil {
/**
* 序列化对象
*
* @param obj
* @return
*/
public static <T> byte[] serialize(T obj) {
if (obj == null) {
log.error("Failed to serializer, obj is null");
throw new RuntimeException("Failed to serializer");
}

@SuppressWarnings("unchecked") Schema<T> schema = (Schema<T>) RuntimeSchema.getSchema(obj.getClass());
LinkedBuffer buffer = LinkedBuffer.allocate(1024 * 1024);
byte[] protoStuff;
try {
protoStuff = ProtostuffIOUtil.toByteArray(obj, schema, buffer);
} catch (Exception e) {
log.error("Failed to serializer, obj:{}", obj, e);
throw new RuntimeException("Failed to serializer");
} finally {
buffer.clear();
}
return protoStuff;
}

/**
* 反序列化对象
*
* @param paramArrayOfByte
* @param targetClass
* @return
*/
public static <T> T deserialize(byte[] paramArrayOfByte, Class<T> targetClass) {
if (paramArrayOfByte == null || paramArrayOfByte.length == 0) {
log.error("Failed to deserialize, byte is empty");
throw new RuntimeException("Failed to deserialize");
}

T instance;
try {
instance = targetClass.newInstance();
} catch (InstantiationException | IllegalAccessException e) {
log.error("Failed to deserialize", e);
throw new RuntimeException("Failed to deserialize");
}

Schema<T> schema = RuntimeSchema.getSchema(targetClass);
ProtostuffIOUtil.mergeFrom(paramArrayOfByte, instance, schema);
return instance;
}

/**
* 序列化列表
*
* @param objList
* @return
*/
public static <T> byte[] serializeList(List<T> objList) {
if (objList == null || objList.isEmpty()) {
log.error("Failed to serializer, objList is empty");
throw new RuntimeException("Failed to serializer");
}

@SuppressWarnings("unchecked") Schema<T> schema =
(Schema<T>) RuntimeSchema.getSchema(objList.get(0).getClass());
LinkedBuffer buffer = LinkedBuffer.allocate(1024 * 1024);
byte[] protoStuff;
ByteArrayOutputStream bos = null;
try {
bos = new ByteArrayOutputStream();
ProtostuffIOUtil.writeListTo(bos, objList, schema, buffer);
protoStuff = bos.toByteArray();
} catch (Exception e) {
log.error("Failed to serializer, obj list:{}", objList, e);
throw new RuntimeException("Failed to serializer");
} finally {
buffer.clear();
try {
if (bos != null) {
bos.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}

return protoStuff;
}

/**
* 反序列化列表
*
* @param paramArrayOfByte
* @param targetClass
* @return
*/
public static <T> List<T> deserializeList(byte[] paramArrayOfByte, Class<T> targetClass) {
if (paramArrayOfByte == null || paramArrayOfByte.length == 0) {
log.error("Failed to deserialize, byte is empty");
throw new RuntimeException("Failed to deserialize");
}

Schema<T> schema = RuntimeSchema.getSchema(targetClass);
List<T> result;
try {
result = ProtostuffIOUtil.parseListFrom(new ByteArrayInputStream(paramArrayOfByte), schema);
} catch (IOException e) {
log.error("Failed to deserialize", e);
throw new RuntimeException("Failed to deserialize");
}
return result;
}

}3.RedisTemplate的工具类方法@Component
public class RedisClient {
private final RedisTemplate<String, String> redisTemplate;

@Autowired
public RedisClient(RedisTemplate<String, String> redisTemplate) {
this.redisTemplate = redisTemplate;
}

/**
* get cache
*
* @param field
* @param targetClass
* @param <T>
* @return
*/
public <T> T get(final String field, Class<T> targetClass) {
byte[] result = redisTemplate.execute((RedisCallback<byte[]>) connection -> connection.get(field.getBytes()));
if (result == null) {
return null;
}

return ProtoStuffUtil.deserialize(result, targetClass);
}

/**
* put cache
*
* @param field
* @param obj
* @param <T>
* @return
*/
public <T> void set(String field, T obj) {
final byte[] value = ProtoStuffUtil.serialize(obj);
redisTemplate.execute((RedisCallback<Void>) connection -> {
connection.set(field.getBytes(), value);
return null;
});
}

/**
* put cache with expire time
*
* @param field
* @param obj
* @param expireTime 单位: s
* @param <T>
*/
public <T> void setWithExpire(String field, T obj, final long expireTime) {
final byte[] value = ProtoStuffUtil.serialize(obj);
redisTemplate.execute((RedisCallback<Void>) connection -> {
connection.setEx(field.getBytes(), expireTime, value);
return null;
});
}

/**
* get list cache
*
* @param field
* @param targetClass
* @param <T>
* @return
*/
public <T> List<T> getList(final String field, Class<T> targetClass) {
byte[] result = redisTemplate.execute((RedisCallback<byte[]>) connection -> connection.get(field.getBytes()));
if (result == null) {
return null;
}

return ProtoStuffUtil.deserializeList(result, targetClass);
}

/**
* put list cache
*
* @param field
* @param objList
* @param <T>
* @return
*/
public <T> void setList(String field, List<T> objList) {
final byte[] value = ProtoStuffUtil.serializeList(objList);
redisTemplate.execute((RedisCallback<Void>) connection -> {
connection.set(field.getBytes(), value);
return null;
});
}

/**
* put list cache with expire time
*
* @param field
* @param objList
* @param expireTime
* @param <T>
* @return
*/
public <T> void setListWithExpire(String field, List<T> objList, final long expireTime) {
final byte[] value = ProtoStuffUtil.serializeList(objList);
redisTemplate.execute((RedisCallback<Void>) connection -> {
connection.setEx(field.getBytes(), expireTime, value);
return null;
});
}

/**
* get h cache
*
* @param key
* @param field
* @param targetClass
* @param <T>
* @return
*/
public <T> T hGet(final String key, final String field, Class<T> targetClass) {
byte[] result = redisTemplate
.execute((RedisCallback<byte[]>) connection -> connection.hGet(key.getBytes(), field.getBytes()));
if (result == null) {
return null;
}

return ProtoStuffUtil.deserialize(result, targetClass);
}

/**
* put hash cache
*
* @param key
* @param field
* @param obj
* @param <T>
* @return
*/
public <T> boolean hSet(String key, String field, T obj) {
final byte[] value = ProtoStuffUtil.serialize(obj);
return redisTemplate.execute(
(RedisCallback<Boolean>) connection -> connection.hSet(key.getBytes(), field.getBytes(), value));
}

/**
* put hash cache
*
* @param key
* @param field
* @param obj
* @param <T>
*/
public <T> void hSetWithExpire(String key, String field, T obj, long expireTime) {
final byte[] value = ProtoStuffUtil.serialize(obj);
redisTemplate.execute((RedisCallback<Void>) connection -> {
connection.hSet(key.getBytes(), field.getBytes(), value);
connection.expire(key.getBytes(), expireTime);
return null;
});
}

/**
* get list cache
*
* @param key
* @param field
* @param targetClass
* @param <T>
* @return
*/
public <T> List<T> hGetList(final String key, final String field, Class<T> targetClass) {
byte[] result = redisTemplate
.execute((RedisCallback<byte[]>) connection -> connection.hGet(key.getBytes(), field.getBytes()));
if (result == null) {
return null;
}

return ProtoStuffUtil.deserializeList(result, targetClass);
}

/**
* put list cache
*
* @param key
* @param field
* @param objList
* @param <T>
* @return
*/
public <T> boolean hSetList(String key, String field, List<T> objList) {
final byte[] value = ProtoStuffUtil.serializeList(objList);
return redisTemplate.execute(
(RedisCallback<Boolean>) connection -> connection.hSet(key.getBytes(), field.getBytes(), value));
}

/**
* get cache by keys
*
* @param key
* @param fields
* @param targetClass
* @param <T>
* @return
*/
public <T> Map<String, T> hMGet(String key, Collection<String> fields, Class<T> targetClass) {
List<byte[]> byteFields = fields.stream().map(String::getBytes).collect(Collectors.toList());
byte[][] queryFields = new byte[byteFields.size()][];
byteFields.toArray(queryFields);
List<byte[]> cache = redisTemplate
.execute((RedisCallback<List<byte[]>>) connection -> connection.hMGet(key.getBytes(), queryFields));

Map<String, T> results = new HashMap<>(16);
Iterator<String> it = fields.iterator();
int index = 0;
while (it.hasNext()) {
String k = it.next();
if (cache.get(index) == null) {
index++;
continue;
}

results.put(k, ProtoStuffUtil.deserialize(cache.get(index), targetClass));
index++;
}

return results;
}

/**
* set cache by keys
*
* @param field
* @param values
* @param <T>
*/
public <T> void hMSet(String field, Map<String, T> values) {
Map<byte[], byte[]> byteValues = new HashMap<>(16);
for (Map.Entry<String, T> value : values.entrySet()) {
byteValues.put(value.getKey().getBytes(), ProtoStuffUtil.serialize(value.getValue()));
}

redisTemplate.execute((RedisCallback<Void>) connection -> {
connection.hMSet(field.getBytes(), byteValues);
return null;
});
}

/**
* get caches in hash
*
* @param key
* @param targetClass
* @param <T>
* @return
*/
public <T> Map<String, T> hGetAll(String key, Class<T> targetClass) {
Map<byte[], byte[]> records = redisTemplate
.execute((RedisCallback<Map<byte[], byte[]>>) connection -> connection.hGetAll(key.getBytes()));

Map<String, T> ret = new HashMap<>(16);
for (Map.Entry<byte[], byte[]> record : records.entrySet()) {
T obj = ProtoStuffUtil.deserialize(record.getValue(), targetClass);
ret.put(new String(record.getKey()), obj);
}

return ret;
}

/**
* list index
*
* @param key
* @param index
* @param targetClass
* @param <T>
* @return
*/
public <T> T lIndex(String key, int index, Class<T> targetClass) {
byte[] value =
redisTemplate.execute((RedisCallback<byte[]>) connection -> connection.lIndex(key.getBytes(), index));
return ProtoStuffUtil.deserialize(value, targetClass);
}

/**
* list range
*
* @param key
* @param start
* @param end
* @param targetClass
* @param <T>
* @return
*/
public <T> List<T> lRange(String key, int start, int end, Class<T> targetClass) {
List<byte[]> value = redisTemplate
.execute((RedisCallback<List<byte[]>>) connection -> connection.lRange(key.getBytes(), start, end));
return value.stream().map(record -> ProtoStuffUtil.deserialize(record, targetClass))
.collect(Collectors.toList());
}

/**
* list left push
*
* @param key
* @param obj
* @param <T>
*/
public <T> void lPush(String key, T obj) {
final byte[] value = ProtoStuffUtil.serialize(obj);
redisTemplate.execute((RedisCallback<Long>) connection -> connection.lPush(key.getBytes(), value));
}

/**
* list left push
*
* @param key
* @param objList
* @param <T>
*/
public <T> void lPush(String key, List<T> objList) {
List<byte[]> byteFields = objList.stream().map(ProtoStuffUtil::serialize).collect(Collectors.toList());
byte[][] values = new byte[byteFields.size()][];

redisTemplate.execute((RedisCallback<Long>) connection -> connection.lPush(key.getBytes(), values));
}

/**
* 精确删除key
*
* @param key
*/
public void deleteCache(String key) {
redisTemplate.delete(key);
}

/**
* 排行榜的存入
*
* @param redisKey
* @param immutablePair
*/
public void zAdd(String redisKey, ImmutablePair<String, BigDecimal> immutablePair) {
final byte[] key = redisKey.getBytes();
final byte[] value = immutablePair.getLeft().getBytes();
redisTemplate.execute((RedisCallback<Boolean>) connection -> connection
.zAdd(key, immutablePair.getRight().doubleValue(), value));

}

/**
* 获取排行榜低->高排序
*
* @param redisKey 要进行排序的类别
* @param start
* @param end
* @return
*/
public List<ImmutablePair<String, BigDecimal>> zRangeWithScores(String redisKey, int start, int end) {
Set<RedisZSetCommands.Tuple> items = redisTemplate.execute(
(RedisCallback<Set<RedisZSetCommands.Tuple>>) connection -> connection
.zRangeWithScores(redisKey.getBytes(), start, end));
return items.stream()
.map(record -> ImmutablePair.of(new String(record.getValue()), BigDecimal.valueOf(record.getScore())))
.collect(Collectors.toList());
}

/**
* 获取排行榜高->低排序
*
* @param redisKey 要进行排序的类别
* @param start
* @param end
* @return
*/
public List<ImmutablePair<String, BigDecimal>> zRevRangeWithScores(String redisKey, int start, int end) {
Set<RedisZSetCommands.Tuple> items = redisTemplate.execute(
(RedisCallback<Set<RedisZSetCommands.Tuple>>) connection -> connection
.zRevRangeWithScores(redisKey.getBytes(), start, end));
return items.stream()
.map(record -> ImmutablePair.of(new String(record.getValue()), BigDecimal.valueOf(record.getScore())))
.collect(Collectors.toList());
}
}