com.cq1080.utils.random

类 Captcha

java.lang.Object

com.cq1080.utils.random.Captcha

public class Captcha
extends Object

This is a simple captcha class, use it to generate a random string and then to create an image of it.

作者:

Igor Polevoy

方法概要

限定符和类型	方法和说明
static byte[]	generateImage(String text) Generates a PNG image of text 180 pixels wide, 40 pixels high with white background.
static String	generateRandomDigit(int length)
static String	generateText() Generates a random alpha-numeric string of eight characters.

从类继承的方法 java.lang.Object

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

方法详细资料

generateText

public static String generateText()

Generates a random alpha-numeric string of eight characters.

返回:

random alpha-numeric string of eight characters.

generateRandomDigit

public static String generateRandomDigit(int length)

generateImage

public static byte[] generateImage(String text)

Generates a PNG image of text 180 pixels wide, 40 pixels high with white background.

参数:

text - expects string size eight (8) characters.

返回:

byte array that is a PNG image generated with text displayed.