cloud.tianai.captcha.generator.common.util

类 CaptchaImageUtils

java.lang.Object

cloud.tianai.captcha.generator.common.util.CaptchaImageUtils

public class CaptchaImageUtils
extends Object

字段概要

字段

限定符和类型	字段和说明
static String	TYPE_JPEG
static String	TYPE_JPG
static String	TYPE_PNG

构造器概要

构造器

构造器和说明
CaptchaImageUtils()

方法概要

限定符和类型	方法和说明
static void	centerOverlayAndRotateImage(BufferedImage baseBufferedImage, BufferedImage coverBufferedImage, double degree)
static BufferedImage	concatImage(boolean direction, int width, int height, BufferedImage... imgArr) 拼接图片
static BufferedImage	copyImage(Image img, int imageType) 拷贝图片
static BufferedImage	copyImage(Image img, int imageType, Color backgroundColor) 拷贝图片
static Graphics2D	createGraphics(BufferedImage image, Color color) 创建画板
static BufferedImage	createTransparentImage(int width, int height)
static BufferedImage	cutImage(BufferedImage oriImage, BufferedImage templateImage, int xPos, int yPos) 通过模板图片抠图（不透明部分）
static void	drawBesselLine(int num, Color color, Graphics2D g, int width, int height, ThreadLocalRandom random) 随机画贝塞尔曲线
static void	drawOval(int num, Color color, Graphics2D g, int width, int height, Random random) 随机画干扰圆
static BufferedImage	drawWordImg(Color fontColor, String word, Font font, float fontTopCoef, int imgWidth, int imgHeight, float deg)
static BufferedImage	genSimpleImgCaptcha(String data, Font font, int width, int height, float startX, float startY, int interferenceLineNum, int interferencePointNum) 生成简单的验证码图片
static Shape	getImageShape(Image img, boolean transparent) 将Image图像中的透明/不透明部分转换为Shape图形
static Color	getRandomColor(Random random) 随机获取颜色
static boolean	isJpeg(String type) 后缀是否是jpg
static boolean	isPng(String type) 后缀是否是 png
static void	overlayImage(BufferedImage baseBufferedImage, BufferedImage coverBufferedImage, int x, int y) 图片覆盖（覆盖图压缩到width*height大小，覆盖到底图上）
static BufferedImage	rotateImage(BufferedImage bufferedImage, double degree) 旋转图片
static BufferedImage[]	splitImage(int pos, boolean direction, BufferedImage img) 分隔图片
static BufferedImage	toBufferedImage(Image image, int imageType) 转换成指定类型的 BufferedImage
static BufferedImage	toBufferedImage(Image image, String imageType) 转换成指定类型的 BufferedImage
static BufferedImage	wrapFile2BufferedImage(InputStream resource)
static BufferedImage	wrapFile2BufferedImage(URL resourceImage)

从类继承的方法 java.lang.Object

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

字段详细资料

TYPE_JPG

public static final String TYPE_JPG

另请参阅:

常量字段值

TYPE_JPEG

public static final String TYPE_JPEG

另请参阅:

常量字段值

TYPE_PNG

public static final String TYPE_PNG

另请参阅:

常量字段值

构造器详细资料

CaptchaImageUtils

public CaptchaImageUtils()

方法详细资料

wrapFile2BufferedImage

public static BufferedImage wrapFile2BufferedImage(URL resourceImage)

wrapFile2BufferedImage

public static BufferedImage wrapFile2BufferedImage(InputStream resource)

createTransparentImage

public static BufferedImage createTransparentImage(int width,
                                                   int height)

overlayImage

public static void overlayImage(BufferedImage baseBufferedImage,
                                BufferedImage coverBufferedImage,
                                int x,
                                int y)

图片覆盖（覆盖图压缩到width*height大小，覆盖到底图上）

参数:

baseBufferedImage - 底图

coverBufferedImage - 覆盖图

x - 起始x轴

y - 起始y轴

getImageShape

public static Shape getImageShape(Image img,
                                  boolean transparent)
                           throws InterruptedException

将Image图像中的透明/不透明部分转换为Shape图形

参数:

img - 图片信息

transparent - 是否透明

返回:

Shape

抛出:

InterruptedException - 异常

cutImage

public static BufferedImage cutImage(BufferedImage oriImage,
                                     BufferedImage templateImage,
                                     int xPos,
                                     int yPos)

通过模板图片抠图（不透明部分）

参数:

oriImage - 源图片

templateImage - 模板图片

xPos - 坐标轴x

yPos - 坐标轴y

返回:

BufferedImage

rotateImage

public static BufferedImage rotateImage(BufferedImage bufferedImage,
                                        double degree)

旋转图片

参数:

bufferedImage -

degree -

返回:

centerOverlayAndRotateImage

public static void centerOverlayAndRotateImage(BufferedImage baseBufferedImage,
                                               BufferedImage coverBufferedImage,
                                               double degree)

splitImage

public static BufferedImage[] splitImage(int pos,
                                         boolean direction,
                                         BufferedImage img)

分隔图片

参数:

pos - 分隔点

direction - true为水平方向， false为垂直方向

img - 待分割的图片

返回:

BufferedImage[]

concatImage

public static BufferedImage concatImage(boolean direction,
                                        int width,
                                        int height,
                                        BufferedImage... imgArr)

拼接图片

参数:

direction - rue为水平方向， false为垂直方向

width - 拼接后图片宽度

height - 拼接后图片高度

imgArr - 拼接的图片数组

返回:

BufferedImage

drawWordImg

public static BufferedImage drawWordImg(Color fontColor,
                                        String word,
                                        Font font,
                                        float fontTopCoef,
                                        int imgWidth,
                                        int imgHeight,
                                        float deg)

drawOval

public static void drawOval(int num,
                            Color color,
                            Graphics2D g,
                            int width,
                            int height,
                            Random random)

随机画干扰圆

参数:

num - 数量

color - 颜色

g - Graphics2D

drawBesselLine

public static void drawBesselLine(int num,
                                  Color color,
                                  Graphics2D g,
                                  int width,
                                  int height,
                                  ThreadLocalRandom random)

随机画贝塞尔曲线

参数:

num - 数量

color - 颜色

g - Graphics2D

genSimpleImgCaptcha

public static BufferedImage genSimpleImgCaptcha(String data,
                                                Font font,
                                                int width,
                                                int height,
                                                float startX,
                                                float startY,
                                                int interferenceLineNum,
                                                int interferencePointNum)

生成简单的验证码图片

参数:

data - 验证码内容

font - 字体包

width - 验证码宽度

height - 验证码高度

startX - 起始X

startY - 起始Y

interferenceLineNum - 干扰线数量

interferencePointNum - 干扰点数量

返回:

BufferedImage

getRandomColor

public static Color getRandomColor(Random random)

随机获取颜色

返回:

Color

toBufferedImage

public static BufferedImage toBufferedImage(Image image,
                                            String imageType)

转换成指定类型的 BufferedImage

参数:

image - image

imageType - imageType

返回:

BufferedImage

toBufferedImage

public static BufferedImage toBufferedImage(Image image,
                                            int imageType)

转换成指定类型的 BufferedImage

参数:

image - image

imageType - imageType

返回:

BufferedImage

copyImage

public static BufferedImage copyImage(Image img,
                                      int imageType)

拷贝图片

参数:

img - img

imageType - imageType

返回:

BufferedImage

copyImage

public static BufferedImage copyImage(Image img,
                                      int imageType,
                                      Color backgroundColor)

拷贝图片

参数:

img - img

imageType - imageType

backgroundColor - backgroundColor

返回:

BufferedImage

createGraphics

public static Graphics2D createGraphics(BufferedImage image,
                                        Color color)

创建画板

参数:

image - image

color - color

返回:

Graphics2D

isJpeg

public static boolean isJpeg(String type)

后缀是否是jpg

参数:

type - type

返回:

boolean

isPng

public static boolean isPng(String type)

后缀是否是 png

参数:

type - type

返回:

boolean