/**
* Creates a {@link Captcha} and stores it in the session.
*
* @param width the width of the image
* @param height the height of the image
* @return {@link BufferedImage} containing the captcha image
*/
public BufferedImage createCaptcha(int width, int height) {
Captcha captcha =
new Captcha.Builder(width, height)
.addText()
.addBackground(new GradiatedBackgroundProducer())
.gimp()
.addNoise()
.addBorder()
.build();
session.setAttribute(Captcha.NAME, captcha);
return captcha.getImage();
}
@Override
public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
ColoredEdgesWordRenderer wordRenderer = new ColoredEdgesWordRenderer(COLORS, FONTS);
Captcha captcha =
new Captcha.Builder(_width, _height)
.addText(wordRenderer)
.gimp()
.addNoise()
.addBackground(new GradiatedBackgroundProducer())
.build();
req.getSession().setAttribute(Captcha.NAME, captcha);
CaptchaServletUtil.writeImage(resp, captcha.getImage());
}
@Override
public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
// ColoredEdgesWordRenderer wordRenderer = new ColoredEdgesWordRenderer(COLORS, FONTS);
if (req.getParameter("_width") != null) {
_width = Integer.parseInt(req.getParameter("_width"));
if (_width > 200) _width = 150;
}
if (req.getParameter("_height") != null) {
_height = Integer.parseInt(req.getParameter("_height"));
if (_height > 150) _height = 70;
}
Captcha captcha =
new Captcha.Builder(_width, _height)
.addText(new DefaultTextProducer(), new DefaultWordRenderer(COLORS, FONTS))
// .gimp()
.addNoise(new StraightLineNoiseProducer(Color.PINK, 2))
// .addBackground(new GradiatedBackgroundProducer())
.build();
req.getSession().setAttribute(NAME, captcha);
CaptchaServletUtil.writeImage(resp, captcha.getImage());
}
public String login() {
StringBuffer msg = new StringBuffer("{msg:'");
SysConfig sysConfig = this.sysConfigService.findByKey("codeConfig");
Captcha captcha = (Captcha) getSession().getAttribute("simpleCaptcha");
Boolean login = Boolean.valueOf(false);
String newPassword = null;
if ((!"".equals(this.username)) && (this.username != null)) {
setUser(this.userService.findByUserName(this.username));
if (this.user != null) {
if (org.apache.commons.lang.StringUtils.isNotEmpty(this.password)) {
newPassword = StringUtil.encryptSha256(this.password);
if (this.user.getPassword().equalsIgnoreCase(newPassword)) {
if (sysConfig.getDataValue().equals("1")) {
if (captcha == null) {
msg.append("请刷新验证码再登录.'");
} else if (captcha.isCorrect(this.checkCode)) {
if (this.user.getStatus().shortValue() == 1) login = Boolean.valueOf(true);
else msg.append("此用户已被禁用.'");
} else msg.append("验证码不正确.'");
} else if (this.user.getStatus().shortValue() == 1) login = Boolean.valueOf(true);
else msg.append("此用户已被禁用.'");
} else msg.append("密码不正确.'");
} else {
msg.append("密码不能为空.'");
}
} else msg.append("用户不存在.'");
}
if (login.booleanValue()) {
UsernamePasswordAuthenticationToken authRequest =
new UsernamePasswordAuthenticationToken(this.username, this.password);
SecurityContext securityContext = SecurityContextHolder.getContext();
securityContext.setAuthentication(this.authenticationManager.authenticate(authRequest));
SecurityContextHolder.setContext(securityContext);
getSession().setAttribute("SPRING_SECURITY_LAST_USERNAME", this.username);
String rememberMe = getRequest().getParameter("_spring_security_remember_me");
if ((rememberMe != null) && (rememberMe.equals("on"))) {
long tokenValiditySeconds = 1209600L;
long tokenExpiryTime = System.currentTimeMillis() + tokenValiditySeconds * 1000L;
String signatureValue =
DigestUtils.md5Hex(
this.username
+ ":"
+ tokenExpiryTime
+ ":"
+ this.user.getPassword()
+ ":"
+ this.key);
String tokenValue = this.username + ":" + tokenExpiryTime + ":" + signatureValue;
String tokenValueBase64 = new String(Base64.encodeBase64(tokenValue.getBytes()));
getResponse().addCookie(makeValidCookie(tokenExpiryTime, tokenValueBase64));
}
setJsonString("{success:true}");
} else {
msg.append(",failure:true}");
setJsonString(msg.toString());
return "login";
}
return "index";
}
/**
* Validates a captcha answer. The same captcha can be validated multiple times.
*
* @param captchaAnswer the String to validate
* @return boolean indicating if the answer is correct
* @throws CaptchaException if no captcha found to validate
*/
public boolean validateCaptcha(String captchaAnswer) throws CaptchaException {
Captcha captcha = (Captcha) session.getAttribute(Captcha.NAME);
if (captcha == null) throw new CaptchaException("no captcha to validate");
return captcha.isCorrect(captchaAnswer);
}
/** 因为获取图片只会有get方法 */
@Override
public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
Builder builder = new Builder(_width, _height);
// 增加边框
builder.addBorder();
// 是否增加干扰线条
if (_noise == true) builder.addNoise();
// ----------------自定义字体大小-----------
// 自定义设置字体颜色和大小 最简单的效果 多种字体随机显示
List<Font> fontList = new ArrayList<Font>();
// fontList.add(new Font("Arial", Font.HANGING_BASELINE,
// 40));//可以设置斜体之类的
fontList.add(new Font("Courier", Font.BOLD, 60));
DefaultWordRenderer dwr = new DefaultWordRenderer(Color.green, fontList);
// 加入多种颜色后会随机显示 字体空心
// List<Color> colorList=new ArrayList<Color>();
// colorList.add(Color.green);
// colorList.add(Color.white);
// colorList.add(Color.blue);
// ColoredEdgesWordRenderer cwr= new
// ColoredEdgesWordRenderer(colorList,fontList);
WordRenderer wr = dwr;
// 增加文本，默认为5个随机字符.
if (_text == null) {
builder.addText();
} else {
String[] ts = _text.split(",");
for (int i = 0; i < ts.length; i++) {
String[] ts1 = ts[i].split(":");
if ("chinese".equals(ts1[0])) {
builder.addText(new ChineseTextProducer(Integer.parseInt(ts1[1])), wr);
} else if ("number".equals(ts1[0])) {
// 这里没有0和1是为了避免歧义 和字母I和O
char[] numberChar = new char[] {'2', '3', '4', '5', '6', '7', '8'};
builder.addText(new DefaultTextProducer(Integer.parseInt(ts1[1]), numberChar), wr);
} else if ("word".equals(ts1[0])) {
// 原理同上
char[] numberChar =
new char[] {
'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'k', 'm', 'n', 'p', 'r', 'w', 'x', 'y'
};
builder.addText(new DefaultTextProducer(Integer.parseInt(ts1[1]), numberChar), wr);
} else {
builder.addText(new DefaultTextProducer(Integer.parseInt(ts1[1])), wr);
}
}
}
// --------------添加背景-------------
// 设置背景渐进效果 以及颜色 form为开始颜色，to为结束颜色
GradiatedBackgroundProducer gbp = new GradiatedBackgroundProducer();
gbp.setFromColor(Color.yellow);
gbp.setToColor(Color.red);
// 无渐进效果，只是填充背景颜色
// FlatColorBackgroundProducer fbp=new
// FlatColorBackgroundProducer(Color.red);
// 加入网纹--一般不会用
// SquigglesBackgroundProducer sbp=new SquigglesBackgroundProducer();
// 没发现有什么用,可能就是默认的
// TransparentBackgroundProducer tbp = new
// TransparentBackgroundProducer();
builder.addBackground(gbp);
// ---------装饰字体---------------
// 字体边框齿轮效果 默认是3
builder.gimp(new BlockGimpyRenderer(1));
// 波纹渲染 相当于加粗
// builder.gimp(new RippleGimpyRenderer());
// 修剪--一般不会用
// builder.gimp(new ShearGimpyRenderer(Color.red));
// 加网--第一个参数是横线颜色，第二个参数是竖线颜色
// builder.gimp(new FishEyeGimpyRenderer(Color.red,Color.yellow));
// 加入阴影效果 默认3，75
// builder.gimp(new DropShadowGimpyRenderer());
// 创建对象
Captcha captcha = builder.build();
CaptchaServletUtil.writeImage(resp, captcha.getImage());
req.getSession().setAttribute(NAME, captcha);
}