控制器製作簡單驗證碼和漢字驗證碼

@Controller
@RequestMapping("imageCode")
public class ImageCodeController {
    Color getRandColor(int fc, int bc) {//給定範圍獲得隨機顏色
        Random random = new Random();
        if (fc > 255)
            fc = 255;
        if (bc > 255)
            bc = 255;
        int r = fc + random.nextInt(bc - fc);
        int g = fc + random.nextInt(bc - fc);
        int b = fc + random.nextInt(bc - fc);
        return new Color(r, g, b);
    }

    @RequestMapping(value = "/showCode", method = RequestMethod.GET)
    public void outputImage(HttpServletRequest request, HttpServletResponse response, HttpSession session)
    {
        //設置頁面不緩存
        response.setHeader("Pragma", "No-cache");
        response.setHeader("Cache-Control", "no-cache");
        response.setDateHeader("Expires", 0);

        // 在內存中創建圖象
        int width = 60, height = 20;
        BufferedImage image = new BufferedImage(width, height,
                BufferedImage.TYPE_INT_RGB);

        // 獲取圖形上下文
        Graphics g = image.getGraphics();

        //生成隨機類
        Random random = new Random();

        // 設定背景色
        g.setColor(getRandColor(200, 250));
        g.fillRect(0, 0, width, height);

        //設定字體
        g.setFont(new Font("Times New Roman", Font.PLAIN, 18));

        //畫邊框
        //g.setColor(new Color());
        //g.drawRect(0,0,width-1,height-1);

        // 隨機產生155條幹擾線，使圖象中的認證碼不易被其它程序探測到
        g.setColor(getRandColor(160, 200));
        for (int i = 0; i < 100; i++) {
            int x = random.nextInt(width);
            int y = random.nextInt(height);
            int xl = random.nextInt(12);
            int yl = random.nextInt(12);
            g.drawLine(x, y, x + xl, y + yl);
        }

        // 取隨機產生的認證碼(4位數字)
        String sRand = "";
        for (int i = 0; i < 4; i++) {
            String rand = String.valueOf(random.nextInt(10));
            sRand += rand;
            // 將認證碼顯示到圖象中
            g.setColor(new Color(20 + random.nextInt(110), 20 + random
                    .nextInt(110), 20 + random.nextInt(110)));//調用函數出來的顏色相同，可能是因爲種子太接近，所以只能直接生成
            g.drawString(rand, 13 * i + 6, 16);
        }

        // 將認證碼存入SESSION
        session.setAttribute("code", sRand);
        // 圖象生效
        g.dispose();

        // 輸出圖象到頁面
        try {
            String formatName = "jpeg";
            ImageIO.write(image, /*"GIF"*/ formatName /* format desired */ , response.getOutputStream());
        } catch (IOException e) {
            e.printStackTrace();
        }

    }
    /*獲取驗證碼*/
    @RequestMapping(value = "/getCode", method = RequestMethod.POST)
    public Result getRandCode(HttpSession session)
    {
        Result result = new Result();
        Object obj= session.getAttribute("code");
        result.setObj(obj);
        return result ;
    }

}

前端頁面刷新 ，尾數帶上時間即可點擊刷新

這裏的驗證碼是把他放在session，登陸時取出session，其實最好放數據庫或redis之類的。

// 刷新驗證碼
function  refreshImg() {
    document.getElementById("imgCode").src = "${path}/imageCode/showCode?timestamp="+(new Date()).getTime();
}

@Controller
public class LoginController extends BaseController {

    /**
     * 登錄
     *
     * @param username 用戶名
     * @param password 密碼
     * @param txtCode
     * @param session
     * @return
     */
    @RequestMapping(value = "/login", method = RequestMethod.POST)
    @ResponseBody
    public Result loginPost(String username, String password, String txtCode, HttpSession session) {
        Result result = new Result();
        // 比對驗證碼是否正確
        if ( !(txtCode.equals(session.getAttribute("code") ) ) ) {
            result.setMsg("驗證碼錯誤");
            return result;
        }
        Subject user = SecurityUtils.getSubject();
        UsernamePasswordToken token =
                new UsernamePasswordToken(username, password);
        token.setRememberMe(true);
        try {
            user.login(token);
        } catch (UnknownAccountException e) {
            result.setMsg("賬號不存在");
            return result;
        } catch (DisabledAccountException e) {
            result.setMsg("賬號未啓用");
            return result;
        } catch (IncorrectCredentialsException e) {
            result.setMsg("密碼錯誤");
            return result;
        } catch (RuntimeException e) {
            e.printStackTrace();
            result.setMsg("未知錯誤,請刷新界面重新登錄！請聯繫管理員帶上報錯截圖"+e.getMessage());
//            result.setMsg(e.getMessage());
            return result;
        }
        result.setSuccess(true);
        session.setAttribute("sex" , getUserSex());
        return result;
    }

    /**
     * 退出
     *
     * @return
     */
    @RequestMapping("/logout")
//    @ResponseBody
    public String logout() {
        ShiroUtils.logout();
        return "redirect:/" ;
    }
}

 

 

 

 

漢字驗證碼

package com.jude.controller;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.util.Random;

import javax.imageio.ImageIO;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.kafka.KafkaProperties;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

/**
 * 生成驗證碼
 * @author jude
 *
 */
@Controller
public class DrawImageController {

	public static final int WIDTH = 120;
	public static final int HEIGHT = 30;




	 /**
     * 生成圖片
     * @param request
     * @param response
     */
    @RequestMapping("/drawImage")
    public void drawImage(HttpServletRequest request, HttpServletResponse response)throws Exception{
    	request.setCharacterEncoding("utf-8");
		response.setContentType("text/html;charset=utf-8");
		// 創建緩存
		BufferedImage bi = new BufferedImage(WIDTH, HEIGHT,
				BufferedImage.TYPE_INT_RGB);
		// 獲得畫布
		Graphics g = bi.getGraphics();

		// 設置背影色
		setBackGround(g);
		// 設置邊框
		setBorder(g);
		// 畫干擾線
		drawRandomLine(g);
		// 寫隨機數
		String random = drawRandomNum((Graphics2D) g);
		// 將隨機漢字存在session中
		request.getSession().setAttribute("checkcode", random);
		// 將圖形寫給瀏覽器
		response.setContentType("image/jpeg");
		// 發頭控制瀏覽器不要緩存
		response.setDateHeader("expries", -1);
		response.setHeader("Cache-Control", "no-cache");
		response.setHeader("Pragma", "no-cache");
		// 將圖片寫給瀏覽器

		response.setHeader("Cache-Control", "no-store, no-cache");
		response.setContentType("image/jpeg");

		ImageIO.write(bi, "jpg", response.getOutputStream());
    }
    
    /**
	 * 設置背景色
	 * 
	 * @param g
	 */
	private void setBackGround(Graphics g) {
		// 設置顏色
		g.setColor(new Color(22, 160, 133));
		// 填充區域
		g.fillRect(0, 0, WIDTH, HEIGHT);

	}

	/**
	 * 設置邊框
	 * 
	 * @param g
	 */
	private void setBorder(Graphics g) {
		// 設置邊框顏色
		g.setColor(new Color(22, 160, 133));
		// 邊框區域
		g.drawRect(1, 1, WIDTH - 2, HEIGHT - 2);
	}

	/**
	 * 畫隨機線條
	 * 
	 * @param g
	 */
	private void drawRandomLine(Graphics g) {
		// 設置顏色
		g.setColor(Color.WHITE);
		// 設置線條個數並畫線
		for (int i = 0; i < 5; i++) {
			int x1 = new Random().nextInt(WIDTH);
			int y1 = new Random().nextInt(HEIGHT);
			int x2 = new Random().nextInt(WIDTH);
			int y2 = new Random().nextInt(HEIGHT);
			g.drawLine(x1, y1, x2, y2);
		}

	}

	/**
	 * 畫隨機漢字
	 * 
	 * @param g
	 * @return
	 */
	private String drawRandomNum(Graphics2D g) {
		StringBuffer sb = new StringBuffer();
		// 設置顏色
		g.setColor(Color.WHITE);
		// 設置字體
		g.setFont(new Font("宋體", Font.BOLD, 20));
		// 準備常用漢字集
		String base = "\u7684\u4e00\u4e86\u662f\u6211\u4e0d\u5728\u4eba\u4eec\u6709\u6765\u4ed6\u8fd9\u4e0a\u7740\u4e2a\u5730\u5230\u5927\u91cc\u8bf4\u5c31\u53bb\u5b50\u5f97\u4e5f\u548c\u90a3\u8981\u4e0b\u770b\u5929\u65f6\u8fc7\u51fa\u5c0f\u4e48\u8d77\u4f60\u90fd\u628a\u597d\u8fd8\u591a\u6ca1\u4e3a\u53c8\u53ef\u5bb6\u5b66\u53ea\u4ee5\u4e3b\u4f1a\u6837\u5e74\u60f3\u751f\u540c\u8001\u4e2d\u5341\u4ece\u81ea\u9762\u524d\u5934\u9053\u5b83\u540e\u7136\u8d70\u5f88\u50cf\u89c1\u4e24\u7528\u5979\u56fd\u52a8\u8fdb\u6210\u56de\u4ec0\u8fb9\u4f5c\u5bf9\u5f00\u800c\u5df1\u4e9b\u73b0\u5c71\u6c11\u5019\u7ecf\u53d1\u5de5\u5411\u4e8b\u547d\u7ed9\u957f\u6c34\u51e0\u4e49\u4e09\u58f0\u4e8e\u9ad8\u624b\u77e5\u7406\u773c\u5fd7\u70b9\u5fc3\u6218\u4e8c\u95ee\u4f46\u8eab\u65b9\u5b9e\u5403\u505a\u53eb\u5f53\u4f4f\u542c\u9769\u6253\u5462\u771f\u5168\u624d\u56db\u5df2\u6240\u654c\u4e4b\u6700\u5149\u4ea7\u60c5\u8def\u5206\u603b\u6761\u767d\u8bdd\u4e1c\u5e2d\u6b21\u4eb2\u5982\u88ab\u82b1\u53e3\u653e\u513f\u5e38\u6c14\u4e94\u7b2c\u4f7f\u5199\u519b\u5427\u6587\u8fd0\u518d\u679c\u600e\u5b9a\u8bb8\u5feb\u660e\u884c\u56e0\u522b\u98de\u5916\u6811\u7269\u6d3b\u90e8\u95e8\u65e0\u5f80\u8239\u671b\u65b0\u5e26\u961f\u5148\u529b\u5b8c\u5374\u7ad9\u4ee3\u5458\u673a\u66f4\u4e5d\u60a8\u6bcf\u98ce\u7ea7\u8ddf\u7b11\u554a\u5b69\u4e07\u5c11\u76f4\u610f\u591c\u6bd4\u9636\u8fde\u8f66\u91cd\u4fbf\u6597\u9a6c\u54ea\u5316\u592a\u6307\u53d8\u793e\u4f3c\u58eb\u8005\u5e72\u77f3\u6ee1\u65e5\u51b3\u767e\u539f\u62ff\u7fa4\u7a76\u5404\u516d\u672c\u601d\u89e3\u7acb\u6cb3\u6751\u516b\u96be\u65e9\u8bba\u5417\u6839\u5171\u8ba9\u76f8\u7814\u4eca\u5176\u4e66\u5750\u63a5\u5e94\u5173\u4fe1\u89c9\u6b65\u53cd\u5904\u8bb0\u5c06\u5343\u627e\u4e89\u9886\u6216\u5e08\u7ed3\u5757\u8dd1\u8c01\u8349\u8d8a\u5b57\u52a0\u811a\u7d27\u7231\u7b49\u4e60\u9635\u6015\u6708\u9752\u534a\u706b\u6cd5\u9898\u5efa\u8d76\u4f4d\u5531\u6d77\u4e03\u5973\u4efb\u4ef6\u611f\u51c6\u5f20\u56e2\u5c4b\u79bb\u8272\u8138\u7247\u79d1\u5012\u775b\u5229\u4e16\u521a\u4e14\u7531\u9001\u5207\u661f\u5bfc\u665a\u8868\u591f\u6574\u8ba4\u54cd\u96ea\u6d41\u672a\u573a\u8be5\u5e76\u5e95\u6df1\u523b\u5e73\u4f1f\u5fd9\u63d0\u786e\u8fd1\u4eae\u8f7b\u8bb2\u519c\u53e4\u9ed1\u544a\u754c\u62c9\u540d\u5440\u571f\u6e05\u9633\u7167\u529e\u53f2\u6539\u5386\u8f6c\u753b\u9020\u5634\u6b64\u6cbb\u5317\u5fc5\u670d\u96e8\u7a7f\u5185\u8bc6\u9a8c\u4f20\u4e1a\u83dc\u722c\u7761\u5174\u5f62\u91cf\u54b1\u89c2\u82e6\u4f53\u4f17\u901a\u51b2\u5408\u7834\u53cb\u5ea6\u672f\u996d\u516c\u65c1\u623f\u6781\u5357\u67aa\u8bfb\u6c99\u5c81\u7ebf\u91ce\u575a\u7a7a\u6536\u7b97\u81f3\u653f\u57ce\u52b3\u843d\u94b1\u7279\u56f4\u5f1f\u80dc\u6559\u70ed\u5c55\u5305\u6b4c\u7c7b\u6e10\u5f3a\u6570\u4e61\u547c\u6027\u97f3\u7b54\u54e5\u9645\u65e7\u795e\u5ea7\u7ae0\u5e2e\u5566\u53d7\u7cfb\u4ee4\u8df3\u975e\u4f55\u725b\u53d6\u5165\u5cb8\u6562\u6389\u5ffd\u79cd\u88c5\u9876\u6025\u6797\u505c\u606f\u53e5\u533a\u8863\u822c\u62a5\u53f6\u538b\u6162\u53d4\u80cc\u7ec6";
		int x = 5;
		// 控制字數
		for (int i = 0; i < 4; i++) {
			// 設置字體旋轉角度
			int degree = new Random().nextInt() % 30;
			// 截取漢字
			String ch = base.charAt(new Random().nextInt(base.length())) + "";
			sb.append(ch);
			// 正向角度
			g.rotate(degree * Math.PI / 180, x, 20);
			g.drawString(ch, x, 20);
			// 反向角度
			g.rotate(-degree * Math.PI / 180, x, 20);
			x += 30;
		}
		System.out.println(sb.toString());
		return sb.toString();
	}
    
}

//點擊換一張驗證碼
function changeImg() {
	var imgSrc = $("#imgObj");   
    var src = imgSrc.attr("src");   
    imgSrc.attr("src",chgUrl(src));  
    $("#info").html("");
}
//時間戳   
//爲了使每次生成圖片不一致，即不讓瀏覽器讀緩存，所以需要加上時間戳   
function chgUrl(url) {
	var timestamp = (new Date()).valueOf();
	url = url.substring(0, 17);
	if ((url.indexOf("&") >= 0)) {
		url = url + "×tamp=" + timestamp;   
	} else {
		url = url + "?timestamp=" + timestamp;   
	}
	return url;
}
//驗證碼驗證
function isRightCode() {
	var code = $("#veryCode").attr("value");
	//alert(code);
	code = "c=" + code;
	$.ajax( {
		type : "POST",
		url : "ResultServlet",
		data : code,
		success : callback
	});
}
//驗證以後處理提交信息或錯誤信息
function callback(data) {
	if(data.toString()==1)
	{
		$("#info").html("xw素材網提醒您：成功了！");
	  return;
	}else
	{
		$("#info").html(data);
		return;
	}
}  

 

頁面

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>後臺登錄-進銷存管理系統</title>
<meta name="author" content="DeathGhost" />
<link rel="stylesheet" type="text/css" href="static/css/style.css" />
<style>
body{height:100%;
    background: #16a085;
    overflow:hidden;}
canvas{z-index:-1;position:absolute;}
.black_overlay{  display: none;  position: absolute;  top: 0%;  left: 0%;  width: 100%;  height: 100%;  background-color: black;  z-index:1001;  -moz-opacity: 0.8;  opacity:.80;  filter: alpha(opacity=80);  }  
.white_content {  display: none;  position: absolute;  top: 25%;  left: 35%;  width: 25%;  height: 15%;  padding: 16px;  border: solid black;  background-color: white;  z-index:1002;  overflow: auto;  }
</style>
<script src="static/js/jquery.js"></script>
<script src="static/js/verifyCode.js"></script>
<script src="static/js/Particleground.js"></script>
<script>

	$(document).ready(function() {
	  //粒子背景特效
	  $('body').particleground({
	    dotColor: '#16a085',
	    lineColor: '#5cbdaa'
	  });
	  
	  $("#loginBtn").click(function(){
		  $.post("/user/login",{userName:$("#userName").val(),password:$("#password").val(),imageCode:$("#imageCode").val()},function(result){
				if(result.success){
					if(result.roleSize==1){
						var roleId=result.roleList[0].id;
						$.post("/user/saveRole",{roleId:roleId},function(result){
							if(result.success){
								window.location.href="/main.html";	
							}
						});									
					}else{
						$("#roleList").empty();
						var roles=result.roleList;
						for(var i=0;i<roles.length;i++){
							if(i==0){
								$("#roleList").append("<input type='radio' checked=true  name='role' value='"+roles[i].id+"'/>"+roles[i].name+"&nbsp;&nbsp;")
								
							}else{
								$("#roleList").append("<input type='radio' name='role' value='"+roles[i].id+"'/>"+roles[i].name+"&nbsp;&nbsp;")
							}
						}
						document.getElementById('light').style.display='block';
						document.getElementById('fade').style.display='block';
					}
				}else{
					alert(result.errorInfo);
				}
		});
	  });
	});
	
	
	function saveRole(){
		var roleId=$("input[name='role']:checked").val();
		$.post("/user/saveRole",{roleId:roleId},function(result){
			if(result.success){
				window.location.href="/main.html";	
			}
		});
	}
	
	
</script>
</head>
<body>
<dl class="admin_login">
 <dt>
  <strong>進銷存管理系統</strong>
  <em>Lnvoicing Management System</em>
 </dt>
 <dd class="user_icon">
  <input type="text" id="userName" placeholder="賬號" class="login_txtbx"/>
 </dd>
 <dd class="pwd_icon">
  <input type="password" id="password" placeholder="密碼" class="login_txtbx"/>
 </dd>
  <dd class="val_icon">
  <div class="checkcode">
    <input type="text" id="imageCode" name="imageCode" placeholder="驗證碼" maxlength="4" class="login_txtbx">
    <img id="imgObj" title="看不清，換一張" src="/drawImage" onclick="changeImg()" />
  </div>
 </dd>
 <dd>
  <input type="button" id="loginBtn" value="立即登陸" class="submit_btn"/>
 </dd>
 <dd>
  <p>© 2012-2018 </p>
  <p><a href="" target="_blank"> </a></p>
 </dd>
</dl>
	<div id="light" class="white_content"> 
          <p>請選擇一個角色登錄系統</p>
          <br/>
          <div id="roleList">
          </div>
          <br/>
          <input type="button" value="提交" onclick="saveRole()"/>
	</div> 
<div id="fade" class="black_overlay"> 
</div> 
</body>
</html>