功能：java实现滑动验证码
项目是采用springboot，maven
开发工具：采用idea
1.效果演示
2.后端代码
控制层
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@Controller public class SliderCodeController {
@Autowired ResourceLoader resourceLoader;
@Autowired private FileUtil fileUtil;
// 设置横轴位置缓存 public static Cache< String, Integer > cacheg = CacheBuilder.newBuilder().expireAfterWrite( 60 , TimeUnit.SECONDS) .maximumSize( 666666 ).build();
@GetMapping @RequestMapping ( "index" ) public String test(HttpServletRequest request, Model model) throws IOException { return "index" ; }
@GetMapping @RequestMapping ( "getImg" ) public @ResponseBody Map< String, Object > getPic(HttpServletRequest request) throws IOException { try { File targetFile = fileUtil.getFile( "target" ); File tempImgFile = fileUtil.getFile( "temp" ); Map < String, Object > resultMap = VerifyImageUtil.pictureTemplatesCut(tempImgFile, targetFile); // 生成流水号，这里就使用时间戳代替 String lno = Calendar.getInstance().getTimeInMillis() + "" ; cacheg.put(lno, Integer.valueOf(resultMap.get( "xWidth" ) + "" )); resultMap.put( "capcode" , lno); // 移除横坐标送前端 resultMap.remove( "xWidth" ); return resultMap; } catch (Exception e) { e.printStackTrace(); return null ; }
}
@GetMapping @RequestMapping ( "checkImgCode" ) public @ResponseBody Map < String, Object > checkcapcode( @RequestParam ( "xpos" ) int xpos, @RequestParam ( "capcode" ) String capcode, HttpServletRequest request) throws IOException { Map < String, Object > result = new HashMap< String, Object >(); Integer x = cacheg.getIfPresent(capcode); if (x == null ) { // 超时 result.put( "code" , 3 ); } else if (xpos - x > 5 || xpos - x < - 5 ) { // 验证失败 result.put( "code" , 2 ); } else { // 验证成功 result.put( "code" , 1 ); } return result; } } |
工具类
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@Component public class FileUtil {
@Value ( "${file.path}" ) private String filePath;
@Value ( "${file.target.path}" ) private String targetFilePath;
@Value ( "${file.target.num}" ) private Integer targetfileNum;
@Value ( "${file.temp.path}" ) private String tempFilePath;
@Value ( "${file.temp.num}" ) private Integer tempfileNum;
public File getFile(String type){ int num = 0 ; String imgType = ".jpg" ; String oldFilePath = "" ; if (type.equals( "target" )){ num = new Random().nextInt(targetfileNum) + 1 ; oldFilePath = targetFilePath; } else if (type.equals( "temp" )){ num = new Random().nextInt(tempfileNum) + 1 ; imgType = "-w.png" ; oldFilePath = tempFilePath; } String path = filePath; String fileImg = num + imgType; String filePath = path + fileImg; File pathFile = new File(path); if (!pathFile.exists()){ pathFile.mkdirs(); } File file = new File(filePath); if (!file.exists()){ try { file.createNewFile(); ClassPathResource classPathResource = new ClassPathResource(oldFilePath + fileImg); InputStream inputStream = classPathResource.getInputStream(); if (inputStream.available() != 0 ){ FileUtils.copyInputStreamToFile(inputStream, file); } inputStream.close(); } catch (IOException e) { e.printStackTrace(); } } return file; }
} |
3.前端页面
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<!DOCTYPE html> < html xmlns:th = "http://HdhCmsTestthymeleaf.org" > < head > < meta charset = "UTF-8" > < title >滑动验证码</ title > < link rel = "stylesheet" href = "/css/slide.css" rel = "external nofollow" > < script src = "/js/jquery-1.11.1.min.js" ></ script > < script src = "/js/jquery.lgyslide.js" ></ script > </ head > < body > < div id = "imgscode" ></ div > < script > $(function() { setTimeout(function() { createcode(); }, 1000) }()); //显示验证码 function createcode() { $ .ajax({ type : 'POST', url : '/getImg', dataType : 'json', success : function(data) { if (data != null) { $("#imgscode") .imgcode( { frontimg : 'data:image/png;base64,' + data.slidingImage, backimg : 'data:image/png;base64,' + data.backImage, yHeight : data.yHeight, refreshcallback : function() { //刷新验证码 createcode(); }, callback : function(msg) { console.log(msg); var $this = this; $ .ajax({ type : 'POST', url : '/checkImgCode', data : { xpos : msg.xpos, capcode : data.capcode }, dataType : 'json', success : function( data) { console .log(data) if (data.code == 1) { $this .getsuccess(); } else { if (data.code == 4) { createcode(); } else if (data.code == 3) { $this .getfail("验证码过期,请刷新"); } else { $this .getfail("验证不通过"); } }
} }) } }); } } }) } </ script > </ body > </ html > |
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原文链接：https://blog.csdn.net/weixin_39220472/article/details/121796734
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