Jedis
redis单机版 java API 操作
package bhz.redis01;
import org.apache.commons.pool2.impl.GenericObjectPoolConfig;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import redis.clients.jedis.*;
import java.util.*;
public class TestSingleRedis {
private static Jedis jedis; //单实例[]
private static ShardedJedis shard; //分片[]
private static ShardedJedisPool pool; //池化[apache common - pool2]
@BeforeClass
public static void setUpBeforeClass() throws Exception {
//单个节点
jedis = new Jedis("192.168.1.115", 6379);
//分片
List<JedisShardInfo> shards = Arrays.asList(
new JedisShardInfo("192.168.1.115",6379));
shard = new ShardedJedis(shards);
//池化
GenericObjectPoolConfig goConfig = new GenericObjectPoolConfig();
goConfig.setMaxTotal(100);
goConfig.setMaxIdle(20);
goConfig.setMaxWaitMillis(-1);
goConfig.setTestOnBorrow(true);
pool = new ShardedJedisPool(goConfig, shards);
}
@AfterClass
public static void tearDownAfterClass() throws Exception {
jedis.disconnect();
shard.disconnect();
pool.destroy();
}
@Test
public void testString() {
//-----添加数据----------
jedis.set("name","bhz");//向key-->name中放入了value-->xinxin
System.out.println(jedis.get("name"));//执行结果：xinxin
jedis.append("name", " is my lover"); //拼接
System.out.println(jedis.get("name"));
jedis.del("name"); //删除某个键
System.out.println(jedis.get("name"));
//设置多个键值对
jedis.mset("name","bhz","age","27","qq","174754613");
jedis.incr("age"); //进行加1操作
System.out.println(jedis.get("name") + "-" + jedis.get("age") + "-" + jedis.get("qq"));
}
/**
* redis操作Map
*/
@Test
public void testMap() {
//-----添加数据----------
Map<String, String> map = new HashMap<String, String>();
map.put("name", "xinxin");
map.put("age", "22");
map.put("qq", "123456");
jedis.hmset("user",map);
//取出user中的name，执行结果:[minxr]-->注意结果是一个泛型的List
//第一个参数是存入redis中map对象的key，后面跟的是放入map中的对象的key，后面的key可以跟多个，是可变参数
List<String> rsmap = jedis.hmget("user", "name", "age", "qq");
System.out.println(rsmap);
//删除map中的某个键值
jedis.hdel("user","age");
System.out.println(jedis.hmget("user", "age")); //因为删除了，所以返回的是null
System.out.println(jedis.hlen("user")); //返回key为user的键中存放的值的个数2
System.out.println(jedis.exists("user"));//是否存在key为user的记录 返回true
System.out.println(jedis.hkeys("user"));//返回map对象中的所有key
System.out.println(jedis.hvals("user"));//返回map对象中的所有value
Iterator<String> iter=jedis.hkeys("user").iterator();
while (iter.hasNext()){
String key = iter.next();
System.out.println(key+":"+jedis.hmget("user",key));
}
}
/**
* jedis操作List
*/
@Test
public void testList(){
//开始前，先移除所有的内容
jedis.del("java framework");
System.out.println(jedis.lrange("java framework",0,-1));
//先向key java framework中存放三条数据
jedis.lpush("java framework","spring");
jedis.lpush("java framework","struts");
jedis.lpush("java framework","hibernate"); //mybatis jdbctemplate (spring data [jpa])
//再取出所有数据jedis.lrange是按范围取出，
// 第一个是key，第二个是起始位置，第三个是结束位置，jedis.llen获取长度 -1表示取得所有
System.out.println(jedis.lrange("java framework",0,-1));
jedis.del("java framework");
jedis.rpush("java framework","spring");
jedis.rpush("java framework","struts");
jedis.rpush("java framework","hibernate");
System.out.println(jedis.lrange("java framework",0,-1));
}
/**
* jedis操作Set
*/
@Test
public void testSet(){
//添加
jedis.sadd("user1","liuling");
jedis.sadd("user1","xinxin");
jedis.sadd("user1","ling");
jedis.sadd("user1","zhangxinxin");
jedis.sadd("user1","who");
//移除noname
jedis.srem("user1","who");
System.out.println(jedis.smembers("user1"));//获取所有加入的value
System.out.println(jedis.sismember("user1", "who"));//判断 who 是否是user集合的元素
System.out.println(jedis.srandmember("user1"));
System.out.println(jedis.scard("user1"));//返回集合的元素个数
}
@Test
public void testRLpush() throws InterruptedException {
//jedis 排序
//注意，此处的rpush和lpush是List的操作。是一个双向链表（但从表现来看的）
jedis.del("a");//先清除数据，再加入数据进行测试
jedis.rpush("a", "1");
jedis.lpush("a","6");
jedis.lpush("a","3");
jedis.lpush("a","9");
System.out.println(jedis.lrange("a",0,-1));// [9, 3, 6, 1]
System.out.println(jedis.sort("a")); //[1, 3, 6, 9] //输入排序后结果
System.out.println(jedis.lrange("a",0,-1));
}
@Test
public void testTrans() {
long start = System.currentTimeMillis();
Transaction tx = jedis.multi();
for (int i = 0; i < 1000; i++) {
tx.set("t" + i, "t" + i);
}
//System.out.println(tx.get("t1000").get());
List<Object> results = tx.exec();
long end = System.currentTimeMillis();
System.out.println("Transaction SET: " + ((end - start)/1000.0) + " seconds");
}
@Test
public void testPipelined() {
Pipeline pipeline = jedis.pipelined();
long start = System.currentTimeMillis();
for (int i = 0; i < 1000; i++) {
pipeline.set("p" + i, "p" + i);
}
//System.out.println(pipeline.get("p1000").get());
List<Object> results = pipeline.syncAndReturnAll();
long end = System.currentTimeMillis();
System.out.println("Pipelined SET: " + ((end - start)/1000.0) + " seconds");
}
@Test
public void testPipelineTrans() {
long start = System.currentTimeMillis();
Pipeline pipeline = jedis.pipelined();
pipeline.multi();
for (int i = 0; i < 100000; i++) {
pipeline.set("" + i, "" + i);
}
pipeline.exec();
List<Object> results = pipeline.syncAndReturnAll();
long end = System.currentTimeMillis();
System.out.println("Pipelined transaction SET: " + ((end - start)/1000.0) + " seconds");
}
@Test
public void testShard() {
long start = System.currentTimeMillis();
for (int i = 0; i < 100000; i++) {
String result = shard.set("shard" + i, "n" + i);
}
long end = System.currentTimeMillis();
System.out.println("shard SET: " + ((end - start)/1000.0) + " seconds");
}
@Test
public void testShardpipelined() {
ShardedJedisPipeline pipeline = shard.pipelined();
long start = System.currentTimeMillis();
for (int i = 0; i < 100000; i++) {
pipeline.set("sp" + i, "p" + i);
}
List<Object> results = pipeline.syncAndReturnAll();
long end = System.currentTimeMillis();
System.out.println("shardPipelined SET: " + ((end - start)/1000.0) + " seconds");
}
@Test
public void testShardPool() {
ShardedJedis sj = pool.getResource();
long start = System.currentTimeMillis();
for (int i = 0; i < 100000; i++) {
String result = sj.set("spn" + i, "n" + i);
}
long end = System.currentTimeMillis();
pool.returnResourceObject(sj);
System.out.println("shardPool SET: " + ((end - start)/1000.0) + " seconds");
}
/**
* <B>方法名称：</B>Redis使用Lua执行应用程序<BR>
* <B>概要说明：</B>
* 我们可以使用Redis+Lua的方式，实现一个完整的事务、保证事务的原子性。
* 如何使用Redis+Lua?
* 我们使用scriptLoad方法，把我们写好的lua脚本加载到Redis的内存中（注意是内存，每次重启则失效）。
* scriptLoad方法会返回一个索引Key，我们只需要通过这个索引Key就可以找到我们之前放到Redis里的脚本。
* 调用evalsha方法，传入索引key，以及操作键、参数值。进行返回 <BR>
*/
/**
* lua script：
* local t1 = redis.call('hgetall',KEYS[1]);
* if type(t1) == 'table' then
* return t1;
* end;
*/
public static final String SCRIPT =
"local t1 = redis.call('hgetall',KEYS[1]);" + "\n" +
"if type(t1) == 'table' then" + "\n" +
"return t1;" + "\n" +
"end;" + "\n" ;
@Test
public void testLua(){
String shakey = jedis.scriptLoad(SCRIPT);//加载脚本，获取sha索引
System.out.println("shakey: " + shakey);
//要获取的key值
List<String> keys = new ArrayList<>();
keys.add("myhash");
//传入的参数
List<String> args = new ArrayList<>();
// /usr/local/bin/redis-cli -h 192.168.1.115 -p 6379 --eval /usr/local/luadir/03.lua name age , baihezhuo
List<String> ret = (List<String>)jedis.evalsha(shakey, keys, args);
System.out.println(ret);
jedis.close();
}
}