Redis实现存储对象
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无现用直接存储对象API,Redis的key和value都支持二进制安全的字符串。
目录
- Redis实现存储对象
- 一.序列化工具类
- 二.测试类
一.序列化工具类
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.Closeable;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.List;
public class ObjectsTranscoder {
// 对象转byte[]
public static byte[] serialize(User value) {
if (value == null) {
throw new NullPointerException("Can't serialize null");
}
byte[] rv = null;
ByteArrayOutputStream bos = null;
ObjectOutputStream os = null;
try {
bos = new ByteArrayOutputStream();
os = new ObjectOutputStream(bos);
/*
* for (CountList user : value) { os.writeObject(user); }
*/
os.writeObject(value);
os.writeObject(null);
os.close();
bos.close();
rv = bos.toByteArray();
} catch (IOException e) {
throw new IllegalArgumentException("Non-serializable object", e);
} finally {
close(os);
close(bos);
}
return rv;
}
//byete[]转对象
public static User deserialize(byte[] in) {
User list = new User();
ByteArrayInputStream bis = new ByteArrayInputStream(in);
ObjectInputStream is = null;
try {
is = new ObjectInputStream(bis);
if (in != null) {
bis = new ByteArrayInputStream(in);
is = new ObjectInputStream(bis);
if (null != is) {
list = (User) is.readObject();
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (null != bis) {
bis.close();
}
if (null != is) {
is.close();
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return list;
}
public static void close(Closeable closeable) {
if (closeable != null) {
try {
closeable.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
二.测试类
public class RedisTest {
public static void main(String[] args) {
String key = "redis-key";
//对象存储reids
User user = new User();
redisTemplate.opsForValue().set(key.getBytes(),ObjectsTranscoder.serialize(user));
//reids获取对象
byte[] in = (byte[])redisTemplate.opsForValue().get(key.getBytes());
User user = (User)ObjectsTranscoder.deserialize(in);
}
}