Java验证码 patchca

快来打我* 2021-11-10 00:34 350阅读 0赞

### Java验证码 patchca ###

*  maven依赖
 *  工具类
 *  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.github.bingoohuang</groupId>
    			<artifactId>patchca</artifactId>
    			<version>0.0.1</version>
    		</dependency>

# 工具类 #

/** * 验证码工具类 * * @author zhengzc * @date 2019-08-01 */
    public class CaptchaUtil { 
    
    	public static ConfigurableCaptchaService getConfigurableCaptchaService() { 
    		ConfigurableCaptchaService cs = new ConfigurableCaptchaService();
    		RandomWordFactory wf = new RandomWordFactory();
    		wf.setCharacters("23456789abcdefghijkmnpqrstuvwxyzABCDEFGHIJKMNPQRSTUVWXYZ");
    		wf.setMaxLength(4);
    		wf.setMinLength(4);
    		cs.setWordFactory(wf);
    		return cs;
    	}
    
    	/** * 选择验证码生成工厂 * * @param cs * @param index */
    	public static void setFactory(ConfigurableCaptchaService cs, int index) { 
    		System.err.println("工厂序号：" + index);
    		if (index == 0) { 
    			// 弧线波纹
    			cs.setFilterFactory(new CurvesRippleFilterFactory(cs.getColorFactory()));
    		} else if (index == 1) { 
    			// 大理石波纹
    			cs.setFilterFactory(new MarbleRippleFilterFactory());
    		} else if (index == 2) { 
    			// 大理石波纹
    			cs.setFilterFactory(new DoubleRippleFilterFactory());
    		} else if (index == 3) { 
    			// 摇摆波纹
    			cs.setFilterFactory(new WobbleRippleFilterFactory());
    		} else if (index == 4) { 
    			// 扩散的波纹
    			cs.setFilterFactory(new DiffuseRippleFilterFactory());
    		}
    	}
    
    	/** * 选择验证码生成工厂 * * @param cs * @param index */
    	public static void setColorFactory(ConfigurableCaptchaService cs, int index) { 
    		System.err.println("颜色序号：" + index);
    		if (index == 0) { 
    			// 自定义颜色
    			cs.setColorFactory(getColorFactory());
    		} else if (index == 1) { 
    			// 梯度变化颜色
    			cs.setColorFactory(new GradientColorFactory());
    		} else if (index == 2) { 
    			// 随机颜色
    			cs.setColorFactory(new RandomColorFactory());
    		} else if (index == 3) { 
    			// 单一颜色
    			cs.setColorFactory(new SingleColorFactory());
    		}
    	}
    
    	/** * 自定义颜色工厂 * * @return */
    	private static ColorFactory getColorFactory() { 
    		return new ColorFactory() { 
    			@Override
    			public Color getColor(int x) { 
    				Random random = new Random();
    				int[] c = { 25, 60, 170};
    				int i = random.nextInt(c.length);
    				for (int fi = 0; fi < c.length; fi++) { 
    					if (fi == i) { 
    						c[fi] = random.nextInt(71);
    					} else { 
    						c[fi] = random.nextInt(256);
    					}
    				}
    				return new Color(c[0], c[1], c[2]);
    			}
    		};
    	}
    }

/** * 使用谷歌提供的验证码组件patchca来生成验证码 * * @author zhengzc * @date 2019-08-01 */
    @Controller
    @RequestMapping("/patchca")
    public class CaptchaController { 
    	@RequestMapping(value = "/getpatchcaImage")
    	public void getpatchcaImage(HttpServletRequest request, HttpServletResponse response) throws Exception { 
    		ConfigurableCaptchaService cs = CaptchaUtil.getConfigurableCaptchaService();
    		CaptchaUtil.setFactory(cs, new Random().nextInt(5));
    		CaptchaUtil.setColorFactory(cs, new Random().nextInt(4));
    		HttpSession session = request.getSession(false);
    		if (session == null) { 
    			session = request.getSession();
    		}
    		setResponseHeaders(response);
    		String token = EncoderHelper.getChallangeAndWriteImage(cs, "png", response.getOutputStream());
    		session.setAttribute("captchaToken", token);
    		System.out.println("当前的 sessionId:" + session.getId() + ",验证码：" + token);
    	}
    	protected void setResponseHeaders(HttpServletResponse response) { 
    		response.setContentType("image/jpeg");
    		response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");
    		response.setHeader("Pragma", "no-cache");
    		long time = System.currentTimeMillis();
    		response.setDateHeader("Last-Modified", time);
    		response.setDateHeader("Date", time);
    		response.setDateHeader("Expires", time);
    	}
    }

# 访问效果 #

[http://localhost:8080/patchca/getpatchcaImage][http_localhost_8080_patchca_getpatchcaImage]

*  \[0,1\]![在这里插入图片描述][20190801213245698.png]
 *  \[0,3\]![在这里插入图片描述][20190801213328411.png]
 *  \[1,2\]![在这里插入图片描述][20190801213908355.png]
 *  \[1,3\]![在这里插入图片描述][20190801213610225.png]
 *  \[2,1\] ![在这里插入图片描述][20190801213040977.png]
 *  \[2,3\]![在这里插入图片描述][20190801213206575.png]
 *  \[3,0\]![在这里插入图片描述][20190801213012503.png]
 *  \[3,1\]![在这里插入图片描述][20190801213124783.png]
 *  \[4,0\]![在这里插入图片描述][20190801213415199.png]

[http_localhost_8080_patchca_getpatchcaImage]: http://localhost:8080/patchca/getpatchcaImage
[20190801213245698.png]: /images/20211109/d4f66ef0352a40a0b1ee7477f8ca3af9.png
[20190801213328411.png]: /images/20211109/f5e05b2d75ea4111b3c156ace71e201b.png
[20190801213908355.png]: /images/20211109/ac32a0c8d9234e81ba0d2da24d358f25.png
[20190801213610225.png]: /images/20211109/e2a2e7150056496d96f12bdd3328a123.png
[20190801213040977.png]: /images/20211109/475eb38dd43a4c02b8c80dfc4a884f9e.png
[20190801213206575.png]: /images/20211109/fa47d6ca29644092800ed771a37d988d.png
[20190801213012503.png]: /images/20211109/26061a728f534517bf2b9b714d8290d2.png
[20190801213124783.png]: /images/20211109/3b91ba0146e24e278794ee6d7d0db5bb.png
[20190801213415199.png]: /images/20211109/f7111f48442d4572ae22f596e8138eef.png