Redis学习笔记六（Jedis操作）

通过Jedis连接redis

1. 引入依赖，测试是否成功

1. 创建maven新项目，并打开pom.xml

<dependency>
	<groupId>redis.clients</groupId>
	<artifactId>jedis</artifactId>
	<version>4.2.3</version>
</dependency>

1. 如果出现包没有找到的问题，对前面笔记提到的 [maven插件配置](https://www.cnblogs.com/sleepyheadLK/p/16375963.html)
2. 重新更新pom.xml即可引入依赖

2. 进行测试

@Test
public void test(){
	//创建Jedis对象
	Jedis jedis = new Jedis("127.0.0.1", 6379);
	String ping = jedis.ping();
	System.out.println(ping);
}

3. 如果出现以下错误

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.

4. pom.xml引入

<dependency>
	<groupId>org.slf4j</groupId>
	<artifactId>slf4j-nop</artifactId>
	<version>1.7.36</version>
</dependency>

5. 更新pom.xml

6. 如果是远程连接失败

   1. redis.conf文件中的保护设置是否关闭
   2. 系统的防火墙是否关闭

2. 操作key

@Test
public void test1(){
	//创建Jedis对象
	Jedis jedis = new Jedis("127.0.0.1", 6379);
	//操作key
	Set<String> keys = jedis.keys("*");
	keys.forEach(i-> System.out.println(i));
	//添加
	jedis.set("name","lucy");
	//获取
	String name = jedis.get("name");
	System.out.println(name);
	//是否存在
	System.out.println(jedis.exists("name"));
	//批量操作
	jedis.mset("name","jack","name2","rose");
}

3. 操作数据类型

//创建Jedis对象
Jedis jedis = new Jedis("127.0.0.1", 6379);
//        //操作list
//        jedis.lpush("list1","v1","v2","v3");
//        List<String> list1 = jedis.lrange("list1", 0, -1);
//        System.out.println(list1);

//        //操作set
//        jedis.sadd("set2","v1","v2","v3");
//        Set<String> set2 = jedis.smembers("set2");
//        System.out.println(set2);

//        //操作hash
//        jedis.hset("hash1",new HashMap<String,String>(){
//            {
//                put("name","jack");
//                put("age","12");
//            }
//        });
//        //获取name对应的值
//        System.out.println(jedis.hget("hash1","name"));
//        //获取所有的key
//        System.out.println(jedis.hkeys("hash1"));

//操作zset
jedis.zadd("zset1", new HashMap<String,Double>(){
	{
		put("jack",12.0);
		put("rose",23.0);
		put("boy",7d);
	}
});
System.out.println(jedis.zrange("zset1",0,-1));
jedis.close();
}

4. 验证码测试

1. 要求：
   
2. 功能设计

//发送
@Test
public void test(){
	verifyCode("112332");
}
//验证
@Test
public void test2(){
	getRedisCode("112332","374848");
}

public static String getCode(){
	Random random = new Random();
	return String.format("%06d",random.nextInt(1000000));
}
//
public static  void verifyCode(String phone){
	Jedis jedis = new Jedis("127.0.0.1", 6379);
	String countKey = "VerifyCode"+phone+":count";
	String codeKey = "VerifyCode"+phone+":code";
	//能否取到
	String s = jedis.get(countKey);
	//发送验证码
	if(s==null){
		jedis.setex(countKey,24*60*60,"1");
	}else if(Integer.valueOf(s)<3){
		jedis.incr(countKey);
	}else{
		System.out.println("超出发送次数");
		jedis.close();
		return;
	}
	//发送验证码

	String vcode = getCode();
	jedis.setex(codeKey,120,vcode);
	jedis.close();
}

public static void getRedisCode(String phone,String code){
	Jedis jedis = new Jedis("127.0.0.1", 6379);
	String codeKey = "VerifyCode"+phone+":code";
	String s = jedis.get(codeKey);
	if(code.equals(s)){
		System.out.println("成功");
	}else{
		System.out.println("失败");
	}
	jedis.close();
}