cn.apiclub.captcha

类 Captcha

java.lang.Object

cn.apiclub.captcha.Captcha

所有已实现的接口:

Serializable

public final class Captcha
extends Object
implements Serializable

A builder for generating a CAPTCHA image/answer pair.

Example for generating a new CAPTCHA:

Captcha captcha = new Captcha.Builder(200, 50)
        .addText()
        .addBackground()
        .build();

Note that the build() must always be called last. Other methods are optional, and can sometimes be repeated. For example:

Captcha captcha = new Captcha.Builder(200, 50)
        .addText()
        .addNoise()
        .addNoise()
        .addNoise()
        .addBackground()
        .build();

Adding multiple backgrounds has no affect; the last background added will simply be the one that is eventually rendered.

To validate that answerStr is a correct answer to the CAPTCHA:

captcha.isCorrect(answerStr);

作者:

James Childers

另请参阅:

序列化表格

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	Captcha.Builder

字段概要

字段

限定符和类型	字段和说明
static String	NAME

方法概要

方法

限定符和类型	方法和说明
String	getAnswer()
BufferedImage	getImage() Get the CAPTCHA image, a PNG.
Date	getTimeStamp()
boolean	isCorrect(String answer)
String	toString()

从类继承的方法 java.lang.Object

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

字段详细资料

NAME

public static final String NAME

另请参阅:

常量字段值

方法详细资料

isCorrect

public boolean isCorrect(String answer)

getAnswer

public String getAnswer()

getImage

public BufferedImage getImage()

Get the CAPTCHA image, a PNG.

返回:

A PNG CAPTCHA image.

getTimeStamp

public Date getTimeStamp()

toString

public String toString()

覆盖:

toString 在类中 Object