import redis.clients.jedis.Jedis;
import redis.clients.jedis.Transaction;
public class Simple6 {
public static void main(String[] args) {
isServerRunning ();
Jedis client = getConnection();
client.hset("user:zhangsan", "query", "1");
List<String> list = new ArrayList<String>();
list.add("a");
list.add("b");
byte[] buf = serilizable(list);
long index = 1;
//client.lpush("dat:zhangsan:query", "a");
client.lpush("dat:zhangsan:query".getBytes(), buf);
boolean exists = client.hexists("user:zhangsan", "query");
if(exists){
String userVal = client.hget("user:zhangsan", "query");
System.out.println("userVal = " + userVal);
}
//client.lpop("dat:zhangsan:query");
//client.ltrim("dat:zhangsan:query", -1, 0);
exists = client.exists("dat:zhangsan:query");
if(exists){
//String lVal = client.lindex("dat:zhangsan:query", 1);
byte[] lVal = client.lpop("dat:zhangsan:query".getBytes());
Object o = unserilizable(lVal);
List<String> lo = (List<String>)o;
System.out.println("lVal = " + lo.get(0));
}
transaction(client);
client.close();
}
//redis transaction
private static void transaction(Jedis client){
Transaction tr = client.multi();
tr.hset("user:www", "query", "1");
tr.exec();
}
//ping
private static void isServerRunning(){
String host = "127.0.0.1";
Jedis jedis = new Jedis(host, 6379);
System.out.println("Connection to server sucessfully");
System.out.println("Server is running: "+jedis.ping());
}
static Jedis getConnection(){
String host = "127.0.0.1";
Jedis client = new Jedis(host, 6379);
return client;
}
static byte[] serilizable(Object o){
ByteArrayOutputStream bos = new ByteArrayOutputStream();
ObjectOutputStream os = null;
try {
os = new ObjectOutputStream(bos);
os.writeObject(o);
return bos.toByteArray();
} catch (IOException e) {
e.printStackTrace ();
}finally{
try {
os.close();
bos.close();
} catch (IOException e) {
e.printStackTrace ();
}
}
return null;
}
static Object unserilizable(byte[] buf){
ByteArrayInputStream bis = new ByteArrayInputStream(buf);
ObjectInputStream os = null;
try {
os = new ObjectInputStream(bis);
Object o = os.readObject();
return o;
} catch (IOException e) {
e.printStackTrace ();
} catch(ClassNotFoundException e){
e.printStackTrace ();
}
finally{
try {
os.close();
bis.close();
} catch (IOException e) {
e.printStackTrace ();
}
}
return null;
}
}