Java验证码 Kaptcha

古城微笑少年丶 2021-11-10 01:12 456阅读 0赞

### Java验证码 Kaptcha ###

*  maven依赖
 *  KaptchaConfig配置
 *  访问效果

# maven依赖 #

<parent>
    		<groupId>org.springframework.boot</groupId>
    		<artifactId>spring-boot-starter-parent</artifactId>
    		<version>2.1.3.RELEASE</version>
    		<relativePath />
    	</parent>
    	<properties>
    		<maven.compiler.source>1.8</maven.compiler.source>
    		<maven.compiler.target>1.8</maven.compiler.target>
    		<springboot.version>2.1.3.RELEASE</springboot.version>
    	</properties>
    	
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-freemarker</artifactId>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-web</artifactId>
    		</dependency>
    		<dependency>
    			<groupId>com.baomidou</groupId>
    			<artifactId>kaptcha-spring-boot-starter</artifactId>
    			<version>1.0.0</version>
    		</dependency>

# KaptchaConfig配置 #

@Configuration
    public class KaptchaConfig { 
    	@Bean
    	public Kaptcha Kaptcha() { 
    		return new GoogleKaptcha(defaultKaptcha());
    	}
    	@Bean
    	public DefaultKaptcha defaultKaptcha() { 
    		DefaultKaptcha defaultKaptcha = new DefaultKaptcha();
    		Properties properties = new Properties();
    		properties.setProperty("kaptcha.border", "yes");
    		properties.setProperty("kaptcha.border.color", "105,179,90");
    		properties.setProperty("kaptcha.textproducer.font.color", "blue");
    		properties.setProperty("kaptcha.image.width", "125");
    		properties.setProperty("kaptcha.image.height", "45");
    		properties.setProperty("kaptcha.session.key", "code");
    		properties.setProperty("kaptcha.textproducer.char.length", "4");
    		properties.setProperty("kaptcha.textproducer.font.names", "宋体,楷体,微软雅黑");
    		Config config = new Config(properties);
    		defaultKaptcha.setConfig(config);
    		return defaultKaptcha;
    	}
    }

@RestController
    @RequestMapping("/kaptcha")
    public class KaptchaController { 
    	@Autowired
    	private Kaptcha kaptcha;
    	@GetMapping("/render")
    	Object render() { 
    		String render = kaptcha.render();
    		System.err.println("render=" + render);
    		return render;
    	}
    	@GetMapping("/valid")
    	Object validDefaultTime(@RequestParam String code) { 
    		boolean validate = kaptcha.validate(code);
    		System.err.println("validate=" + validate);
    		return validate;
    	}
    	@GetMapping("/validTime")
    	Object validWithTime(@RequestParam String code) { 
    		boolean validate = kaptcha.validate(code, 60);
    		System.err.println("validate=" + validate);
    		return validate;
    	}
    }

# 访问效果 #

[http://localhost:8080/kaptcha/render][http_localhost_8080_kaptcha_render]  
![在这里插入图片描述][20190801223727334.png]  
校验：  
[http://ip:8080/kaptcha/valid?code=yj96][http_ip_8080_kaptcha_valid_code_yj96]  
校验成功返回： ture  
校验失败：报错  
第一次校验成功后再次校验也会报错

[http_localhost_8080_kaptcha_render]: http://localhost:8080/kaptcha/render
[20190801223727334.png]: /images/20211109/a5c2c4741c104c60aa3bbb14fb1988be.png
[http_ip_8080_kaptcha_valid_code_yj96]: http://ip:8080/kaptcha/valid?code=yj96