一.准备几个工具类
产生随机数工具类
package cn.itsource.pethome.basic.util;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
/**
* 产生随机验证码
* @author
* @date 2018/10/26-16:16
*/
public class StrUtils {
/**
* 把逗号分隔的字符串转换字符串数组
*
* @param str
* @return
*/
public static String[] splitStr2StrArr(String str,String split) {
if (str != null && !str.equals("")) {
return str.split(split);
}
return null;
}
/**
* 把逗号分隔字符串转换List的Long
*
* @param str
* @return
*/
public static List<Long> splitStr2LongArr(String str) {
String[] strings = splitStr2StrArr(str,",");
if (strings == null) return null;
List<Long> result = new ArrayList<>();
for (String string : strings) {
result.add(Long.parseLong(string));
}
return result;
}
/**
* 把逗号分隔字符串转换List的Long
*
* @param str
* @return
*/
public static List<Long> splitStr2LongArr(String str,String split) {
String[] strings = splitStr2StrArr(str,split);
if (strings == null) return null;
List<Long> result = new ArrayList<>();
for (String string : strings) {
result.add(Long.parseLong(string));
}
return result;
}
public static String getRandomString(int length) {
String str = "0123456789";
Random random = new Random();
StringBuffer sb = new StringBuffer();
for (int i = 0; i < length; i++) {
int number = random.nextInt(10);
sb.append(str.charAt(number));
}
return sb.toString();
}
public static String getComplexRandomString(int length) {
String str = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
Random random = new Random();
StringBuffer sb = new StringBuffer();
for (int i = 0; i < length; i++) {
int number = random.nextInt(62);
sb.append(str.charAt(number));
}
return sb.toString();
}
public static String convertPropertiesToHtml(String properties){
//1:容量:6:32GB_4:样式:12:塑料壳
StringBuilder sBuilder = new StringBuilder();
String[] propArr = properties.split("_");
for (String props : propArr) {
String[] valueArr = props.split(":");
sBuilder.append(valueArr[1]).append(":").append(valueArr[3]).append("<br>");
}
return sBuilder.toString();
}
}
设置验证码有效期工具类
Maven 导入Redis中服务端jedis的核心jar包
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>3.3.0</version>
</dependency>
package cn.itsource.pethome.basic.util;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
import java.io.IOException;
import java.util.Properties;
/**
* 获取连接池对象
*/
public enum RedisUtils {
INSTANCE;
static JedisPool jedisPool = null;
static {
//1 创建连接池配置对象
JedisPoolConfig config = new JedisPoolConfig();
//2 进行配置-四个配置
config.setMaxIdle(1);//最小连接数
config.setMaxTotal(11);//最大连接数
config.setMaxWaitMillis(10 * 1000L);//最长等待时间
config.setTestOnBorrow(true);//测试连接时是否畅通
//3 通过配置对象创建连接池对象
Properties properties = null;
try {
properties = new Properties();
properties.load(RedisUtils.class.getClassLoader().getResourceAsStream("redis.properties"));
} catch (IOException e) {
e.printStackTrace();
}
String host = properties.getProperty("redis.host");
String port = properties.getProperty("redis.port");
String password = properties.getProperty("redis.password");
String timeout = properties.getProperty("redis.timeout");
System.out.println(host);
System.out.println(port);
System.out.println(password);
System.out.println(timeout);
jedisPool = new JedisPool(config, host, Integer.valueOf(port),Integer.valueOf(timeout), password);
}
//获取连接
public Jedis getSource() {
return jedisPool.getResource();
}
//关闭资源
public void closeSource(Jedis jedis) {
if (jedis != null) {
jedis.close();
}
}
/**
* 设置字符值
*
* @param key
* @param
*/
public void del(String key) {
Jedis jedis = getSource();
jedis.del(key);
closeSource(jedis);
}
/**
* 设置字符值
*
* @param key
* @param value
*/
public void set(String key, String value) {
Jedis jedis = getSource();
jedis.set(key, value);
closeSource(jedis);
}
/**
* 设置
* @param key
* @param value
*/
public void set(byte[] key, byte[] value) {
Jedis jedis = getSource();
jedis.set(key, value);
closeSource(jedis);
}
/**
*
* @param key
* @return
*/
public byte[] get(byte[] key) {
Jedis jedis = getSource();
try {
return jedis.get(key);
} catch (Exception e) {
e.printStackTrace();
} finally {
closeSource(jedis);
}
return null;
}
/**
* 设置字符值
*
* @param key
*/
public String get(String key) {
Jedis jedis = getSource();
try {
return jedis.get(key);
} catch (Exception e) {
e.printStackTrace();
} finally {
closeSource(jedis);
}
return null;
}
//value: 设置有效期时间
public void set(String key, String value, Integer time) {
Jedis jedis = getSource();
jedis.setex(key,time,value);
closeSource(jedis);
}
}
二.业务逻辑
1.随机产生验证码(设置有效期10分钟)
//1.产生随机验证码4位 (工具类StrUtils)
String code = StrUtils.getComplexRandomString(4);
//通过key获取redis中对应的值 格式:4个验证码:毫秒数
String value = RedisUtils.INSTANCE.get("当前登录的" + phone);
//判断value是否为空 不为空就代表没有过期
if (StringUtils.isNoneBlank(value)) { //判断字符串是否为空 为空就是false lang3
//截取这个value的时间 并转化为long类型
Long beginTime = Long.valueOf(value.split(":")[1]);
//如果第二次的时间减去第一次的时间<一分钟,就证明一分钟之内发送了多次请求
if ((System.currentTimeMillis() - beginTime) < 60 * 1000) {
throw new RuntimeException("一分钟之内不能发送多次请求!");
}
}
//2.设置有效期(10分钟) (Redis工具类)
RedisUtils.INSTANCE.set("当前登录的" + phone, code + ":" + System.currentTimeMillis(), 10 * 60);
//用打印语句表示发送短信
String text = "爱你的验证码:" + code + "请接收";
//开始发送短信
SendMsgUtil.sendCode(phone, text);