linux中設置密碼
[root@iZ254lfyd6nZ ~]# cd / [root@iZ254lfyd6nZ /]# ls bin boot dev etc home lib lib64 lost+found media mnt opt proc root sbin selinux srv sys tmp usr var [root@iZ254lfyd6nZ /]# cd usr [root@iZ254lfyd6nZ usr]# ls bin etc games include lib lib64 libexec local sbin share src tmp [root@iZ254lfyd6nZ usr]# cd local [root@iZ254lfyd6nZ local]# ls aegis bin etc games include lib lib64 libexec redis redis-2.8.12.tar.gz sbin share src [root@iZ254lfyd6nZ local]# cd redis [root@iZ254lfyd6nZ redis]# ls 00-RELEASENOTES CONTRIBUTING deps INSTALL MANIFESTO redis.conf runtest-sentinel src utils BUGS COPYING dump.rdb Makefile README runtest sentinel.conf tests [root@iZ254lfyd6nZ redis]# cd src [root@iZ254lfyd6nZ src]# ls adlist.c aof.o db.o intset.h mkreleasehdr.sh rand.c redis-check-dump replication.o sha1.h t_list.o ziplist.o adlist.h asciilogo.h debug.c intset.o multi.c rand.h redis-check-dump.c rio.c sha1.o t_set.c zipmap.c adlist.o bio.c debug.o lzf_c.c multi.o rand.o redis-check-dump.o rio.h slowlog.c t_set.o zipmap.h ae.c bio.h dict.c lzf_c.o networking.c rdb.c redis-cli rio.o slowlog.h t_string.c zipmap.o ae_epoll.c bio.o dict.h lzf_d.c networking.o rdb.h redis-cli.c scripting.c slowlog.o t_string.o zmalloc.c ae_evport.c bitops.c dict.o lzf_d.o notify.c rdb.o redis-cli.o scripting.o solarisfixes.h t_zset.c zmalloc.h ae.h bitops.o endianconv.c lzf.h notify.o redisassert.h redis.h sds.c sort.c t_zset.o zmalloc.o ae_kqueue.c config.c endianconv.h lzfP.h object.c redis-benchmark redis.o sds.h sort.o util.c ae.o config.h endianconv.o Makefile object.o redis-benchmark.c redis-sentinel sds.o syncio.c util.h ae_select.c config.o fmacros.h Makefile.dep pqsort.c redis-benchmark.o redis-server sentinel.c syncio.o util.o anet.c crc64.c help.h memtest.c pqsort.h redis.c release.c sentinel.o testhelp.h valgrind.sup anet.h crc64.h hyperloglog.c memtest.o pqsort.o redis-check-aof release.h setproctitle.c t_hash.c version.h anet.o crc64.o hyperloglog.o migrate.c pubsub.c redis-check-aof.c release.o setproctitle.o t_hash.o ziplist.c aof.c db.c intset.c migrate.o pubsub.o redis-check-aof.o replication.c sha1.c t_list.c ziplist.h [root@iZ254lfyd6nZ src]# ./redis-cli 127.0.0.1:6379> get name "tanglei1234" 127.0.0.1:6379> config get requirepass 1) "requirepass" 2) "" 127.0.0.1:6379> config set requirepass newpsw OK 127.0.0.1:6379> config get requirepass (error) NOAUTH Authentication required. 127.0.0.1:6379> auth newpsw OK 127.0.0.1:6379> get name "tanglei1234" 127.0.0.1:6379> Connection closed by foreign host.
java代碼訪問的redis工具類
package com.guilf.service.impl;
import org.apache.commons.pool2.impl.GenericObjectPoolConfig;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import java.util.Iterator;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
public class RedisUtil {
private static final Logger log = LoggerFactory.getLogger(RedisUtil.class);
// private static final Properties properties = ClassesConfigLoader.getProperties();
// private static final String host = properties.getProperty("redis.host");
// private static final int port = Integer.valueOf(properties.getProperty("redis.port"));
// private static final String instanceid = properties.getProperty("redis.instanceid");
// private static final String password = properties.getProperty("redis.password");
// private static final int timeout = Integer.valueOf(properties.getProperty("redis.timeout", "2000"));
// private static final int maxTotal = Integer.valueOf(properties.getProperty("redis.maxTotal", "1024"));
// private static final int maxIdle = Integer.valueOf(properties.getProperty("redis.maxIdle", "10"));
// private static final int maxWaitMillis = Integer.valueOf(properties.getProperty("redis.maxWaitMillis", "3000"));
// private static final boolean testOnIdle = Boolean.valueOf(properties.getProperty("redis.testOnIdle", "true")); //是否checkIdle
// private static final int timeCheckIdle = Integer.valueOf(properties.getProperty("redis.timeCheckIdle", "60000")); //每隔多少秒check一次
// private static final int idleTimeout = Integer.valueOf(properties.getProperty("redis.idleTimeout", "300000")); //超時時間
// private static final int numTestsPerEvictionRun = Integer.valueOf(properties.getProperty("redis.numTestsPerEvictionRun", "1024")); //一次驅逐過程中，最多驅逐對象的個數
private static final String host = "192.168.88.134";
private static final int port = 6379;
// private static final String instanceid = properties.getProperty("redis.instanceid");
private static final String password = "123456";
private static final int timeout = 2000;
private static final int maxTotal = 1024;
private static final int maxIdle = 10;
private static final int maxWaitMillis = 3000;
private static final boolean testOnIdle = true; //是否checkIdle
private static final int timeCheckIdle = 60000; //每隔多少秒check一次
private static final int idleTimeout = 300000; //超時時間
private static final int numTestsPerEvictionRun = 1024; //一次驅逐過程中，最多驅逐對象的個數
private static JedisPool pool = null;
//private static Jedis jedis = null;
private static Object lock = new Object();
static {
init();
}
private static void init() {
if (null == pool) {
GenericObjectPoolConfig config = new GenericObjectPoolConfig();
config.setMaxTotal(maxTotal);
config.setMaxIdle(maxIdle);
config.setMaxWaitMillis(maxWaitMillis);
config.setTestWhileIdle(testOnIdle);
config.setTimeBetweenEvictionRunsMillis(timeCheckIdle);
config.setMinEvictableIdleTimeMillis(idleTimeout);
config.setNumTestsPerEvictionRun(numTestsPerEvictionRun);
synchronized (lock) {
if (null == pool) {
try {
pool = new JedisPool(config, host, port, timeout, password);
log.info("init jedis pool successful!");
} catch (Exception e) {
log.error("", e);
}
}
}
}
}
// public static Jedis getInstance() {
// init();
//
// return jedis;
// }
/**
* 獲取一個jedis 對象
*
* @return
*/
private static Jedis getJedis() {
if (pool == null) {
init();
}
return pool.getResource();
}
/**
* 返還到連接池
*
* @param pool
* @param redis
*/
private static void returnResource(Jedis redis) {
if (redis != null) {
redis.close();
}
}
// 刪除key
public static Long del(String key) {
Jedis jedis = null;
try {
jedis = getJedis();
return jedis.del(key);
} catch (Exception e) {
log.error("操作Redis發生異常，異常詳情：", e);
return -1L;
} finally {
// 返還到連接池
returnResource(jedis);
}
}
public static Boolean exists(String key) {
Jedis jedis = null;
Boolean flag = false;
try {
jedis = getJedis();
flag = jedis.exists(key);
} catch (Exception e) {
log.error("操作Redis發生異常，異常詳情：", e);
} finally {
// 返還到連接池
returnResource(jedis);
}
return flag;
}
/**
* 獲取數據
*
* @param key
* @return
*/
public static String get(String key) {
String value = null;
Jedis jedis = null;
try {
jedis = getJedis();
value = jedis.get(key);
} catch (Exception e) {
log.error("操作Redis發生異常，異常詳情：", e);
} finally {
// 返還到連接池
returnResource(jedis);
}
return value;
}
// 設置
public static String set(String key, String value) {
Jedis jedis = null;
try {
jedis = getJedis();
return jedis.set(key, value);
} catch (Exception e) {
log.error("操作Redis發生異常，異常詳情：", e);
return "";
} finally {
// 返還到連接池
returnResource(jedis);
}
}
// 獲取Hash值
public static String hget(String key, String field) {
Jedis jedis = null;
String value = null;
try {
jedis = getJedis();
value = jedis.hget(key, field);
} catch (Exception e) {
log.error("操作Redis發生異常，異常詳情：", e);
} finally {
// 返還到連接池
returnResource(jedis);
}
return value;
}
public static Map<String, String> hgetAll(String key) {
Jedis jedis = null;
Map<String, String> value = null;
try {
jedis = getJedis();
value = jedis.hgetAll(key);
} catch (Exception e) {
log.error("操作Redis發生異常，異常詳情：", e);
} finally {
// 返還到連接池
returnResource(jedis);
}
return value;
}
// 設置Hash值
public static Long hset(String key, String field, String value) {
Jedis jedis = null;
try {
jedis = getJedis();
return jedis.hset(key, field, value);
} catch (Exception e) {
log.error("操作Redis發生異常，異常詳情：", e);
return -1L;
} finally {
// 返還到連接池
returnResource(jedis);
}
}
// 刪除Hash值
public static Long hdel(String key, String... fields) {
Jedis jedis = null;
try {
jedis = getJedis();
return jedis.hdel(key, fields);
} catch (Exception e) {
log.error("操作Redis發生異常，異常詳情：", e);
return -1L;
} finally {
// 返還到連接池
returnResource(jedis);
}
}
public static Long expire(String key, int seconds) {
Jedis jedis = null;
try {
jedis = getJedis();
return jedis.expire(key, seconds);
} catch (Exception e) {
log.error("操作Redis發生異常，異常詳情：", e);
return -1L;
} finally {
// 返還到連接池
returnResource(jedis);
}
}
public static void main(String[] args) {
try {
Jedis jedis = getJedis();
System.out.println("連接成功");
Set<String> keys = jedis.keys("*");
Iterator<String> it=keys.iterator() ;
while(it.hasNext()){
String key = it.next();
System.out.println(key);
}
// while (true) {
// String key = "ftc-ump-mid";
// //System.out.println("before setting: " + jedis.hget(key, "attr"));
// System.out.println(">>" + RedisUtil.hset(key, "attr", "0"));
// RedisUtil.expire(key, 5);
//
// System.out.println("after setting: " + RedisUtil.hget(key, "attr"));
// System.out.println(">>" + RedisUtil.hdel(key, "attr"));
//
// System.out.println("after delete: " + RedisUtil.hget(key, "attr"));
//
// Thread.sleep(1000 * 10);
// }
//關閉退出
//jedis.quit();
//jedis.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}