redis保存验证码登录验证码，有效期1分钟

喜欢ヅ旅行 2022-02-24 00:58 328阅读 0赞

# 功能描述 #

用户登录时，请求一个生产一个验证码，验证码生产后 保持到redis数据库中，有效时间为一分钟

# 功能图 #

![点击获取验证码的按钮 开始生产验证码][2019040216380359.png]

# 查看redis数据库中的验证码信息，和有效时间 #

key为 ip_yzm value为生产的验证码

![在这里插入图片描述][20190402164006173.png]

# 功能代码 #

## 前台代码 ##

<!DOCTYPE html>
    <html>
    <head>
    <meta charset="UTF-8">
    <title>注册页面</title>
    <script type="text/javascript" src="js/jquery-1.8.2.min.js"></script>
    <script type="text/javascript">
    var time = 60;
    //开始定时
    function showTime()
    {
        	var but = $("input[type='button']");
        	but.attr("disabled",true);
       		but.val(""+time--+"秒后重新发送");
       
    }
    //停止计时
    function stop()
    {
    	clearInterval(times); 
    	var but = $("input[type='button']");
    	but.val("获取验证码");
    	but.attr("disabled",false);
    }
    
    var getYzm  = function(){
    	time = 60;
    	$.post("doYzm",null,function(data){
    		if(data){
    			 times = setInterval("showTime();",1000);
    			 setTimeout("stop();",60*1000);
    		}
    	},"json")
    }
    
    </script>
    </head>
    <body>
    <p>验证码过期测试</p>
    <form action="/login" method="post">
    	<input type="text" value="请输入用户名" name="username" /><br>
    	<input  type="text" value="请输入密码" name="password"/><br>
    	<input  type="text" name="yzm"/><input type="button" "getYzm()" value="获取验证码"> 
    	<input type="submit" value="提交"> 
    </form>
    </body>
    </html>

## 后台代码 ##

@Controller
    public class PageController { 
    
    	@Autowired
    	@Qualifier("stringRedisTemplate")
    	RedisTemplate<String,String> rt;
    	
    	@RequestMapping("/{page}")
    	public String page(@PathVariable("page") String page) { 
    		return page;
    	}
    	
    	//生产验证码 保持到redis数据库中，有效时间为一分钟
    	@RequestMapping("/doYzm")
    	@ResponseBody
    	public boolean doYzm(HttpServletRequest req) { 
    		try { 
    			String ip = req.getRemoteAddr();
    			String yzm = this.getYzm();
    			System.out.println(yzm);
    			ValueOperations forValue = rt.opsForValue();
    			forValue.set(ip+"_yzm", yzm);
    			rt.expire(ip+"_yzm", 60*1000, TimeUnit.MILLISECONDS);
    			return true;
    		} catch (Exception e) { 
    			// TODO: handle exception
    			e.printStackTrace();
    		}
    		return false;
    	}
    	
    	//校验验证码
    	@RequestMapping("/login")
    	@ResponseBody
    	public String login(HttpServletRequest req,String yzm) { 
    		String ip = req.getRemoteAddr();
    		ValueOperations<String, String> forValue = rt.opsForValue();
    		String old_yzm = forValue.get(ip+"_yzm");
    		if(old_yzm ==null)return "验证码不存在或者过期";
    		else if(old_yzm.equals(yzm)) return "验证码正确";
    		else return "验证码错误";
    	}
    	
    	//验证码生产方法
    	private String getYzm() { 
    		String yzm = "";
    		for(int i=0;i<4;i++) { 
    			int int1 = new Random().nextInt(10);
    			yzm+=int1;
    		}
    		return yzm;
    		
    	}
    	
    }

## 项目简单配置 ##

spring.thymeleaf.prefix=classpath:/templates/page/
    spring.thymeleaf.suffix=.html
    spring.thymeleaf.mode=HTML
    spring.thymeleaf.encoding=UTF-8
    spring.thymeleaf.content-type=text/html
    
    spring.redis.database=0
    spring.redis.host=127.0.0.1
    spring.redis.port=6379

## 项目pom依赖 ##

<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-data-redis</artifactId>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-thymeleaf</artifactId>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-web</artifactId>
    		</dependency>
    		<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
    </dependency>

[2019040216380359.png]: /images/20220224/96c133e7b4854cc198f51381bddbacd4.png
[20190402164006173.png]: /images/20220224/766e81d262694bb1b4b3d5283865a181.png