com.jfinal.captcha

Class CaptchaRender

java.lang.Object

com.jfinal.render.Render

com.jfinal.captcha.CaptchaRender

public class CaptchaRender
extends Render

CaptchaRender.

Field Summary

Fields

Modifier and Type	Field and Description
protected static String	captchaName
protected static char[]	charArray
protected static int	HEIGHT
protected static Random	random
protected static Font[]	RANDOM_FONT
protected static int	WIDTH

Fields inherited from class com.jfinal.render.Render

request, response, view

Constructor Summary

Constructors

Constructor and Description
CaptchaRender()

Method Summary

Modifier and Type	Method and Description
protected Captcha	createCaptcha()
protected void	drawGraphic(String randomString, BufferedImage image)
protected String	getCaptchaKeyFromCookie()
protected Color	getRandColor(int fc, int bc)
protected String	getRandomString()
void	render() 生成验证码
static void	setCaptchaName(String captchaName) 设置 captchaName
static boolean	validate(Controller controller, String userInputString) 校验用户输入的验证码是否正确
static boolean	validate(String captchaKey, String userInputString) 校验用户输入的验证码是否正确

Methods inherited from class com.jfinal.render.Render

getDevMode, getEncoding, getView, setContext, setContext, setView

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

captchaName

protected static String captchaName

random

protected static final Random random

WIDTH

protected static final int WIDTH

See Also:

Constant Field Values

HEIGHT

protected static final int HEIGHT

See Also:

Constant Field Values

charArray

protected static final char[] charArray

RANDOM_FONT

protected static final Font[] RANDOM_FONT

Constructor Detail

CaptchaRender

public CaptchaRender()

Method Detail

setCaptchaName

public static void setCaptchaName(String captchaName)

设置 captchaName

render

public void render()

生成验证码

Specified by:

render in class Render

createCaptcha

protected Captcha createCaptcha()

getCaptchaKeyFromCookie

protected String getCaptchaKeyFromCookie()

getRandomString

protected String getRandomString()

drawGraphic

protected void drawGraphic(String randomString,
                           BufferedImage image)

getRandColor

protected Color getRandColor(int fc,
                             int bc)

validate

public static boolean validate(Controller controller,
                               String userInputString)

校验用户输入的验证码是否正确

Parameters:

controller - 控制器

userInputString - 用户输入的字符串

Returns:

验证通过返回 true, 否则返回 false

validate

public static boolean validate(String captchaKey,
                               String userInputString)

校验用户输入的验证码是否正确

Parameters:

captchaKey - 验证码 key，在不支持 cookie 的情况下可通过传参给服务端

userInputString - 用户输入的字符串

Returns:

验证通过返回 true, 否则返回 false