java + springmvc 酷炫验证码分享

太过爱你忘了你带给我的痛 2024-02-17 21:30 38阅读 0赞

一、maven 依赖

<dependency>
    	<groupId>com.github.bingoohuang</groupId>
    	<artifactId>patchca</artifactId>
    	<version>0.0.1</version>
    </dependency>

二、spring mvc 控制器

import java.awt.Color;
    import java.io.IOException;
    import java.util.Random;
    
    
    import javax.servlet.http.*;
    
    
    import com.github.bingoohuang.patchca.background.*;
    import com.github.bingoohuang.patchca.color.*;
    import com.github.bingoohuang.patchca.custom.*;
    import com.github.bingoohuang.patchca.filter.predefined.*;
    import com.github.bingoohuang.patchca.font.*;
    import com.github.bingoohuang.patchca.utils.encoder.EncoderHelper;
    import com.github.bingoohuang.patchca.word.*;
    
    
    @Controller
    @RequestMapping("/login")
    public class DemoController {
    	/**
    	* 彩色，验证码
    	* @param request
    	* @param response
    	* @throws IOException
    	*/
    	@RequestMapping("/verfiy-code")
    	public void VerifyCode(HttpServletRequest request, HttpServletResponse response) {
    		//生成验证码并写入输出流
    		String code = com.galaxyf.xd.web.utilis.VerifyCode.outputCaptcha(request, response);
    		//记录验证码到 session
    		/*
    			HttpSession session = req.getSession();
    			session.setAttribute("verify-code", code);
    		 * */
    	}  
    }
    
    
    三、验证码生产类（VerifyCode.java）
    
    
    package com.springdemo.controller;
    
    
    import java.awt.Color;
    import java.io.IOException;
    import java.util.Random;
    
    
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    import javax.servlet.http.HttpSession;
    
    
    import com.github.bingoohuang.patchca.background.MyCustomBackgroundFactory;
    import com.github.bingoohuang.patchca.color.ColorFactory;
    import com.github.bingoohuang.patchca.custom.ConfigurableCaptchaService;
    import com.github.bingoohuang.patchca.filter.predefined.CurvesRippleFilterFactory;
    import com.github.bingoohuang.patchca.filter.predefined.DiffuseRippleFilterFactory;
    import com.github.bingoohuang.patchca.filter.predefined.DoubleRippleFilterFactory;
    import com.github.bingoohuang.patchca.filter.predefined.MarbleRippleFilterFactory;
    import com.github.bingoohuang.patchca.filter.predefined.WobbleRippleFilterFactory;
    import com.github.bingoohuang.patchca.font.RandomFontFactory;
    import com.github.bingoohuang.patchca.utils.encoder.EncoderHelper;
    import com.github.bingoohuang.patchca.word.RandomWordFactory;
    
    
    public class VerifyCode {
    	static Logger log = Logger.getLogger(VerifyCode.class);
    	private static ConfigurableCaptchaService cs = new ConfigurableCaptchaService();
    	private static Random random = new Random();
    	static int verifyCodeType=1;//验证码字符集
    	/**
    	 * 参数初始化
    	 */
    	static {
    		// cs.setColorFactory(new SingleColorFactory(new Color(25, 60, 170)));
    		// 设置颜色
    		cs.setColorFactory(new ColorFactory() {
    			@Override
    			public Color getColor(int x) {
    				int[] c = new int[3];
    				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]);
    			}
    		});
    		RandomWordFactory wf = new RandomWordFactory();
    		//验证码字符集
    		switch (verifyCodeType) {
    			case 1: //纯数字
    				wf.setCharacters("0123456789");
    				break;
    			case 2: //纯字母
    				wf.setCharacters("abcdefghigkmnpqrstuvwxyzABCDEFGHIGKLMNPQRSTUVWXYZ");
    				break;
    			default: //数字字母混合
    				wf.setCharacters("23456789abcdefghigkmnpqrstuvwxyzABCDEFGHIGKLMNPQRSTUVWXYZ");
    				break;
    		}		
    		// 验证码位数
    		wf.setMaxLength(4); // 最大
    		wf.setMinLength(4); // 最小
    		cs.setWordFactory(wf);
    		// 设置图片大小
    		cs.setWidth(170);
    		cs.setHeight(60);
    		// 设置字体大小
    		RandomFontFactory font = new RandomFontFactory();
    		font.setMaxSize(32);
    		font.setMinSize(42);
    		cs.setFontFactory(font);
    		// 干扰线
    		MyCustomBackgroundFactory background = new MyCustomBackgroundFactory();
    		cs.setBackgroundFactory(background);
    	}
    
    
    	/**
    	 * 设置 http 相应头信息
    	 * 
    	 * @param response
    	 */
    	protected static void setResponseHeaders(HttpServletResponse response) {
    		response.setContentType("image/png");
    		response.setHeader("Cache-Control", "no-cache, no-store");
    		response.setHeader("Pragma", "no-cache");
    		long time = System.currentTimeMillis();
    		response.setDateHeader("Last-Modified", time);
    		response.setDateHeader("Date", time);
    		response.setDateHeader("Expires", time);
    	}
    
    
    	/**
    	 * 输出验证码到响应流
    	 * 
    	 * @param request
    	 * @param response
    	 * @throws IOException
    	 */
    	public static String outputCaptcha(HttpServletRequest request, HttpServletResponse response) {
    		//验证码效果
    		switch (random.nextInt(5)) {
    			case 0:
    				cs.setFilterFactory(new CurvesRippleFilterFactory(cs.getColorFactory()));
    				break;
    			case 1:
    				cs.setFilterFactory(new MarbleRippleFilterFactory());
    				break;
    			case 2:
    				cs.setFilterFactory(new DoubleRippleFilterFactory());
    				break;
    			case 3:
    				cs.setFilterFactory(new WobbleRippleFilterFactory());
    				break;
    			case 4:
    				cs.setFilterFactory(new DiffuseRippleFilterFactory());
    				break;
    		}
    		HttpSession session = request.getSession(false);
    		if (session == null) {
    			session = request.getSession();
    		}
    		setResponseHeaders(response);
    		String verifyCode="";
    		try {
    			// 验证码
    			verifyCode = EncoderHelper.getChallangeAndWriteImage(cs, "png", response.getOutputStream());			
    		} catch (Exception e) {
    			log.error(e.getMessage(),e);
    			verifyCode="....";
    		}
    		return verifyCode;
    	}
    }

四、测试  
访问：http://localhost:8080/xxxxx/login/verfiy-code