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• 使用 UnsupportedEncodingException 的软件包
• java.io 通过数据流、序列化和文件系统提供系统输入和输出。
• java.lang 提供利用 Java 编程语言进行程序设计的基础类。
• java.net 为实现网络应用程序提供类。
• java.util 包含集合框架、遗留的 collection
  类、事件模型、日期和时间设施、国际化和各种实用工具类（字符串标记生成器、随机数生成器和位数组）。
• java.util.logging 提供 JavaTM 2 平台核心日志工具的类和接口。

package com.ssm.chapter18.main;import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.data.redis.connection.RedisListCommands;
import org.springframework.data.redis.connection.RedisZSetCommands.Limit;
import org.springframework.data.redis.connection.RedisZSetCommands.Range;
import org.springframework.data.redis.core.DefaultTypedTuple;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.ZSetOperations.TypedTuple;public class Chapter18Main {public static void main(String[] args) {testString();testCal();testRedisHash();testList();testBList();testSet();testZset();testHyperLogLog();}public static void testString() {ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");RedisTemplate redisTemplate = applicationContext.getBean(RedisTemplate.class);// 设值redisTemplate.opsForValue().set("key1", "value1");redisTemplate.opsForValue().set("key2", "value2");// 通过key获取值String value1 = (String) redisTemplate.opsForValue().get("key1");System.out.println(value1);// 通过key删除值redisTemplate.delete("key1");// 求长度Long length = redisTemplate.opsForValue().size("key2");System.out.println(length);// 设值新值并返回旧值String oldValue2 = (String) redisTemplate.opsForValue().getAndSet("key2", "new_value2");System.out.println(oldValue2);// 通过key获取值.String value2 = (String) redisTemplate.opsForValue().get("key2");System.out.println(value2);// 求子串String rangeValue2 = redisTemplate.opsForValue().get("key2", 0, 3);System.out.println(rangeValue2);// 追加字符串到末尾，返回新串长度int newLen = redisTemplate.opsForValue().append("key2", "_app");System.out.println(newLen);String appendValue2 = (String) redisTemplate.opsForValue().get("key2");System.out.println(appendValue2);}/*** 测试Redis运算.*/public static void testCal() {ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");RedisTemplate redisTemplate = applicationContext.getBean(RedisTemplate.class);redisTemplate.opsForValue().set("i", "9");printCurrValue(redisTemplate, "i");redisTemplate.opsForValue().increment("i", 1);printCurrValue(redisTemplate, "i");redisTemplate.getConnectionFactory().getConnection().decr(redisTemplate.getKeySerializer().serialize("i"));printCurrValue(redisTemplate, "i");redisTemplate.getConnectionFactory().getConnection().decrBy(redisTemplate.getKeySerializer().serialize("i"), 6);printCurrValue(redisTemplate, "i");redisTemplate.opsForValue().increment("i", 2.3);printCurrValue(redisTemplate, "i");}/*** 打印当前key的值* * @param redisTemplate*            spring RedisTemplate* @param key键*/public static void printCurrValue(RedisTemplate redisTemplate, String key) {String i = (String) redisTemplate.opsForValue().get(key);System.err.println(i);}public static void testRedisHash() {ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");RedisTemplate redisTemplate = applicationContext.getBean(RedisTemplate.class);String key = "hash";Map<String, String> map = new HashMap<String, String>();map.put("f1", "val1");map.put("f2", "val2");// 相当于hmset命令redisTemplate.opsForHash().putAll(key, map);// 相当于hset命令redisTemplate.opsForHash().put(key, "f3", "6");printValueForhash(redisTemplate, key, "f3");// 相当于 hexists key filed命令boolean exists = redisTemplate.opsForHash().hasKey(key, "f3");System.out.println(exists);// 相当于hgetall命令Map keyValMap = redisTemplate.opsForHash().entries(key);// 相当于hincrby命令redisTemplate.opsForHash().increment(key, "f3", 2);printValueForhash(redisTemplate, key, "f3");// 相当于hincrbyfloat命令redisTemplate.opsForHash().increment(key, "f3", 0.88);printValueForhash(redisTemplate, key, "f3");// 相当于hvals命令List valueList = redisTemplate.opsForHash().values(key);// 相当于hkeys命令Set keyList = redisTemplate.opsForHash().keys(key);List<String> fieldList = new ArrayList<String>();fieldList.add("f1");fieldList.add("f2");// 相当于hmget命令List valueList2 = redisTemplate.opsForHash().multiGet(key, keyList);// 相当于hsetnx命令boolean success = redisTemplate.opsForHash().putIfAbsent(key, "f4", "val4");System.out.println(success);// 相当于hdel命令Long result = redisTemplate.opsForHash().delete(key, "f1", "f2");System.out.println(result);}private static void printValueForhash(RedisTemplate redisTemplate, String key, String field) {// 相当于hget命令Object value = redisTemplate.opsForHash().get(key, field);System.out.println(value);}public static void testList() {ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");RedisTemplate redisTemplate = applicationContext.getBean(RedisTemplate.class);try {// 删除链表，以便我们可以反复测试redisTemplate.delete("list");// 把node3插入链表listredisTemplate.opsForList().leftPush("list", "node3");List<String> nodeList = new ArrayList<String>();for (int i = 2; i >= 1; i--) {nodeList.add("node" + i);}// 相当于lpush把多个价值从左插入链表redisTemplate.opsForList().leftPushAll("list", nodeList);// 从右边插入一个节点redisTemplate.opsForList().rightPush("list", "node4");// 获取下标为0的节点String node1 = (String) redisTemplate.opsForList().index("list", 0);// 获取链表长度long size = redisTemplate.opsForList().size("list");// 从左边弹出一个节点String lpop = (String) redisTemplate.opsForList().leftPop("list");// 从右边弹出一个节点String rpop = (String) redisTemplate.opsForList().rightPop("list");// 注意，需要使用更为底层的命令才能操作linsert命令// 使用linsert命令在node2前插入一个节点redisTemplate.getConnectionFactory().getConnection().lInsert("list".getBytes("utf-8"),RedisListCommands.Position.BEFORE, "node2".getBytes("utf-8"), "before_node".getBytes("utf-8"));// 使用linsert命令在node2后插入一个节点redisTemplate.getConnectionFactory().getConnection().lInsert("list".getBytes("utf-8"),RedisListCommands.Position.AFTER, "node2".getBytes("utf-8"), "after_node".getBytes("utf-8"));// 判断list是否存在，如果存在则从左边插入head节点redisTemplate.opsForList().leftPushIfPresent("list", "head");// 判断list是否存在，如果存在则从右边插入end节点redisTemplate.opsForList().rightPushIfPresent("list", "end");// 从左到右，或者下标从0到10的节点元素List valueList = redisTemplate.opsForList().range("list", 0, 10);nodeList.clear();for (int i = 1; i <= 3; i++) {nodeList.add("node");}// 在链表左边插入三个值为node的节点redisTemplate.opsForList().leftPushAll("list", nodeList);// 从左到右删除至多三个node节点redisTemplate.opsForList().remove("list", 3, "node");// 给链表下标为0的节点设置新值redisTemplate.opsForList().set("list", 0, "new_head_value");} catch (UnsupportedEncodingException ex) {ex.printStackTrace();}// 打印链表数据printList(redisTemplate, "list");}public static void printList(RedisTemplate redisTemplate, String key) {// 链表长度Long size = redisTemplate.opsForList().size(key);// 获取整个链表的值List valueList = redisTemplate.opsForList().range(key, 0, size);// 打印System.out.println(valueList);}public static void testBList() {ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");RedisTemplate redisTemplate = applicationContext.getBean(RedisTemplate.class);// 清空数据，可以重复测试redisTemplate.delete("list1");redisTemplate.delete("list2");// 初始化链表list1List<String> nodeList = new ArrayList<String>();for (int i = 1; i <= 5; i++) {nodeList.add("node" + i);}redisTemplate.opsForList().leftPushAll("list1", nodeList);// Spring使用参数超时时间作为阻塞命令区分，等价于blpop命令，并且可以设置时间参数redisTemplate.opsForList().leftPop("list1", 1, TimeUnit.SECONDS);// Spring使用参数超时时间作为阻塞命令区分，等价于brpop命令，并且可以设置时间参数redisTemplate.opsForList().rightPop("list1", 1, TimeUnit.SECONDS);nodeList.clear();// 初始化链表list2for (int i = 1; i <= 3; i++) {nodeList.add("data" + i);}redisTemplate.opsForList().leftPushAll("list2", nodeList);// 相当于rpoplpush命令，弹出list1最右边的节点，插入到list2最左边redisTemplate.opsForList().rightPopAndLeftPush("list1", "list2");// 相当于brpoplpush命令，注意在Spring中使用超时参数区分redisTemplate.opsForList().rightPopAndLeftPush("list1", "list2", 1, TimeUnit.SECONDS);// 打印链表数据printList(redisTemplate, "list1");printList(redisTemplate, "list2");}public static void testSet() {// 请把RedisTemplate值序列化器设置为StringRedisSerializer测试该代码片段ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");RedisTemplate redisTemplate = applicationContext.getBean(RedisTemplate.class);Set set = null;// 将元素加入列表redisTemplate.boundSetOps("set1").add("v1", "v2", "v3", "v4", "v5", "v6");redisTemplate.boundSetOps("set2").add("v0", "v2", "v4", "v6", "v8");// 求集合长度redisTemplate.opsForSet().size("set1");// 求差集set = redisTemplate.opsForSet().difference("set1", "set2");// 求并集set = redisTemplate.opsForSet().intersect("set1", "set2");// 判断是否集合中的元素boolean exists = redisTemplate.opsForSet().isMember("set1", "v1");// 获取集合所有元素set = redisTemplate.opsForSet().members("set1");// 从集合中随机弹出一个元素String val = (String) redisTemplate.opsForSet().pop("set1");// 随机获取一个集合的元素val = (String) redisTemplate.opsForSet().randomMember("set1");// 随机获取2个集合的元素List list = redisTemplate.opsForSet().randomMembers("set1", 2L);// 删除一个集合的元素，参数可以是多个redisTemplate.opsForSet().remove("set1", "v1");// 求两个集合的并集redisTemplate.opsForSet().union("set1", "set2");// 求两个集合的差集，并保存到集合diff_set中redisTemplate.opsForSet().differenceAndStore("set1", "set2", "diff_set");// 求两个集合的交集，并保存到集合inter_set中redisTemplate.opsForSet().intersectAndStore("set1", "set2", "inter_set");// 求两个集合的并集，并保存到集合union_set中redisTemplate.opsForSet().unionAndStore("set1", "set2", "union_set");}public static void testZset() {ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");RedisTemplate redisTemplate = applicationContext.getBean(RedisTemplate.class);// Spring提供接口TypedTuple操作有序集合Set<TypedTuple> set1 = new HashSet<TypedTuple>();Set<TypedTuple> set2 = new HashSet<TypedTuple>();int j = 9;for (int i = 1; i <= 9; i++) {j--;// 计算分数和值Double score1 = Double.valueOf(i);String value1 = "x" + i;Double score2 = Double.valueOf(j);String value2 = j % 2 == 1 ? "y" + j : "x" + j;// 使用Spring提供的默认TypedTuple——DefaultTypedTupleTypedTuple typedTuple1 = new DefaultTypedTuple(value1, score1);set1.add(typedTuple1);TypedTuple typedTuple2 = new DefaultTypedTuple(value2, score2);set2.add(typedTuple2);}// 将元素插入有序集合zset1redisTemplate.opsForZSet().add("zset1", set1);redisTemplate.opsForZSet().add("zset2", set2);// 统计总数Long size = null;size = redisTemplate.opsForZSet().zCard("zset1");// 计分数为score，那么下面的方法就是求3<=score<=6的元素size = redisTemplate.opsForZSet().count("zset1", 3, 6);Set set = null;// 从下标一开始截取5个元素，但是不返回分数,每一个元素是Stringset = redisTemplate.opsForZSet().range("zset1", 1, 5);printSet(set);// 截取集合所有元素，并且对集合按分数排序，并返回分数,每一个元素是TypedTupleset = redisTemplate.opsForZSet().rangeWithScores("zset1", 0, -1);printTypedTuple(set);// 将zset1和zset2两个集合的交集放入集合inter_zsetsize = redisTemplate.opsForZSet().intersectAndStore("zset1", "zset2", "inter_zset");// 区间Range range = Range.range();range.lt("x8");// 小于range.gt("x1");// 大于set = redisTemplate.opsForZSet().rangeByLex("zset1", range);printSet(set);range.lte("x8");// 小于等于range.gte("x1");// 大于等于set = redisTemplate.opsForZSet().rangeByLex("zset1", range);printSet(set);// 限制返回个数Limit limit = Limit.limit();// 限制返回个数limit.count(4);// 限制从第五个开始截取limit.offset(5);// 求区间内的元素，并限制返回4条set = redisTemplate.opsForZSet().rangeByLex("zset1", range, limit);printSet(set);// 求排行，排名第1返回0，第2返回1Long rank = redisTemplate.opsForZSet().rank("zset1", "x4");System.err.println("rank = " + rank);// 删除元素，返回删除个数size = redisTemplate.opsForZSet().remove("zset1", "x5", "x6");System.err.println("delete = " + size);// 按照排行删除从0开始算起，这里将删除第排名第2和第3的元素size = redisTemplate.opsForZSet().removeRange("zset2", 1, 2);// 获取所有集合的元素和分数，以-1代表全部元素set = redisTemplate.opsForZSet().rangeWithScores("zset2", 0, -1);printTypedTuple(set);// 删除指定的元素size = redisTemplate.opsForZSet().remove("zset2", "y5", "y3");System.err.println(size);// 给集合中的一个元素的分数加上11Double dbl = redisTemplate.opsForZSet().incrementScore("zset1", "x1", 11);redisTemplate.opsForZSet().removeRangeByScore("zset1", 1, 2);set = redisTemplate.opsForZSet().reverseRangeWithScores("zset2", 1, 10);printTypedTuple(set);}/*** 打印TypedTuple集合* * @param set*            -- Set<TypedTuple>*/public static void printTypedTuple(Set<TypedTuple> set) {if (set != null && set.isEmpty()) {return;}Iterator iterator = set.iterator();while (iterator.hasNext()) {TypedTuple val = (TypedTuple) iterator.next();System.err.print("{value = " + val.getValue() + ", score = " + val.getScore() + "}\n");}}/*** 打印普通集合* * @param set普通集合*/public static void printSet(Set set) {if (set != null && set.isEmpty()) {return;}Iterator iterator = set.iterator();while (iterator.hasNext()) {Object val = iterator.next();System.out.print(val + "\t");}System.out.println();}public static void testHyperLogLog() {ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");RedisTemplate redisTemplate = applicationContext.getBean(RedisTemplate.class);redisTemplate.opsForHyperLogLog().add("HyperLogLog", "a", "b", "c", "d", "a");redisTemplate.opsForHyperLogLog().add("HyperLogLog2", "a");redisTemplate.opsForHyperLogLog().add("HyperLogLog2", "z");Long size = redisTemplate.opsForHyperLogLog().size("HyperLogLog");System.err.println(size);size = redisTemplate.opsForHyperLogLog().size("HyperLogLog2");System.err.println(size);redisTemplate.opsForHyperLogLog().union("des_key", "HyperLogLog", "HyperLogLog2");size = redisTemplate.opsForHyperLogLog().size("des_key");System.err.println(size);}
}

<?xml version='1.0' encoding='UTF-8' ?>
<!-- was: <?xml version="1.0" encoding="UTF-8"?> -->
<beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsdhttp://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsdhttp://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd"><bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig"><property name="maxIdle" value="50" /><property name="maxTotal" value="100" /><property name="maxWaitMillis" value="20000" /></bean><bean id="stringRedisSerializer"class="org.springframework.data.redis.serializer.StringRedisSerializer" /><bean id="connectionFactory"class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory"><property name="hostName" value="localhost" /><property name="port" value="6379" /><property name="poolConfig" ref="poolConfig" /></bean><bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate"><property name="connectionFactory" ref="connectionFactory" /><property name="defaultSerializer" ref="stringRedisSerializer" /><property name="keySerializer" ref="stringRedisSerializer" /><property name="valueSerializer" ref="stringRedisSerializer" /></bean></beans>