top.bayberry.core.image

类 ImagesTools

java.lang.Object

top.bayberry.core.image.ImagesTools

public class ImagesTools
extends Object

图片工具类

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           │      author:lelouch    ┌─┘
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                 神兽保佑
                 代码无BUG!
 

作者:

lelouch

构造器概要

构造器

构造器和说明
ImagesTools()

方法概要

限定符和类型	方法和说明
static void	addWatermarkPic(BufferedImage bi, BufferedImage icon, int x, int y) 文件水印(图片)
static void	addWatermarkPic(BufferedImage bi, BufferedImage icon, int x, int y, float alph) 文件水印(图片)
static void	addWatermarkText(BufferedImage bi, Font font, Color color, String text, int x, int y, float alph) 添加水印文字
static void	addWatermarkText(BufferedImage bi, String text, int x, int y) 添加水印文字
static String	BufferedImageToBase64(BufferedImage bi, String formatName) BufferedImage To Base64
static byte[]	BufferedImageToBytes(BufferedImage bi, String formatName) BufferedImage To Bytes
static InputStream	bufferedImageToInputStream(BufferedImage image, String formatName) 将BufferedImage转换为InputStream
static BufferedImage	bytesToBufferedImage(byte[] bytes) bytes To BufferedImage
static String	createAsciiPic(File file) 图片转ascii字符
static BufferedImage	cutPic(BufferedImage bi, CutConfig cutConfig) 图片裁剪
static BufferedImage	getBufferedImage(byte[] input) 获取 BufferedImage
static BufferedImage	getBufferedImage(File pic) 获取 BufferedImage
static BufferedImage	getBufferedImage(InputStream input) 获取 BufferedImage
static BufferedImage	getBufferedImage(URL url) 获取 BufferedImage
static BufferedImage[]	getBufferedImagex(byte[] bytes) 获取 BufferedImage(防偏色)
static BufferedImage[]	getBufferedImagex(File pic) 获取 BufferedImage(防偏色)
static BufferedImage[]	getBufferedImagex(InputStream input) 获取 BufferedImage(防偏色)
static String	getImageFormatName(File file) 获取图片格式
static Image	getScaledInstance(BufferedImage bi, int width, int height, int hints) 图片缩放, 参数说明:
static BufferedImage	getSubimage(BufferedImage bi, int x, int y, int w, int h) 裁剪图片, 参数说明:
static String	getTypeByBytes(byte[] bytes) 根据文件流读取图片文件真实类型
static String	getTypeByStream(FileInputStream is) 根据文件流读取图片文件真实类型
static BufferedImage	grayPixel(BufferedImage bfimage)
static BufferedImage	jhlabs_filter(BufferedImage bi, com.jhlabs.image.AbstractBufferedImageOp jhlabs) 滤镜处理
static int	ostu(int[][] gray, int w, int h)
static String	QRString(File file) 二维码图片转ascii字符
static byte[]	writeImageByte(BufferedImage bi, String formatName) 写入 byte[]
static void	writeImageFile(BufferedImage bi, File outputfile) 写入文件
static void	writeImageFileCompress(BufferedImage bi, File outputfile) 压缩
static void	writeImageFileCompress(BufferedImage bi, File outputfile, float Quality) 压缩
static InputStream	writeImageInputStream(BufferedImage bi, String formatName) 写入 InputStream
static BufferedImage	zoomBufferedImage(BufferedImage image, int width, int height, int hints) 例缩

从类继承的方法 java.lang.Object

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

构造器详细资料

ImagesTools

public ImagesTools()

方法详细资料

createAsciiPic

public static String createAsciiPic(File file)

图片转ascii字符

参数:

file -

QRString

public static String QRString(File file)

二维码图片转ascii字符

参数:

file -

返回:

grayPixel

public static BufferedImage grayPixel(BufferedImage bfimage)

ostu

public static int ostu(int[][] gray,
                       int w,
                       int h)

getImageFormatName

public static String getImageFormatName(File file)
                                 throws IOException

获取图片格式

参数:

file - 图片文件

返回:

图片格式

抛出:

IOException

getBufferedImage

public static BufferedImage getBufferedImage(File pic)
                                      throws IOException

获取 BufferedImage

参数:

pic -

返回:

抛出:

IOException

getBufferedImagex

public static BufferedImage[] getBufferedImagex(File pic)
                                         throws SimpleImageException,
                                                IOException

获取 BufferedImage(防偏色)

参数:

pic -

返回:

抛出:

IOException

SimpleImageException

getBufferedImagex

public static BufferedImage[] getBufferedImagex(byte[] bytes)
                                         throws SimpleImageException,
                                                IOException

获取 BufferedImage(防偏色)

参数:

bytes -

返回:

抛出:

IOException

SimpleImageException

getBufferedImagex

public static BufferedImage[] getBufferedImagex(InputStream input)
                                         throws SimpleImageException,
                                                IOException

获取 BufferedImage(防偏色)

参数:

input -

返回:

抛出:

IOException

SimpleImageException

getBufferedImage

public static BufferedImage getBufferedImage(InputStream input)
                                      throws IOException

获取 BufferedImage

参数:

input -

返回:

抛出:

IOException

getBufferedImage

public static BufferedImage getBufferedImage(byte[] input)
                                      throws IOException

获取 BufferedImage

参数:

input -

返回:

抛出:

IOException

getBufferedImage

public static BufferedImage getBufferedImage(URL url)
                                      throws IOException

获取 BufferedImage

参数:

url -

返回:

抛出:

IOException

writeImageFile

public static void writeImageFile(BufferedImage bi,
                                  File outputfile)
                           throws IOException

写入文件

参数:

bi -

outputfile -

抛出:

IOException

writeImageInputStream

public static InputStream writeImageInputStream(BufferedImage bi,
                                                String formatName)
                                         throws IOException

写入 InputStream

参数:

bi -

formatName -

抛出:

IOException

writeImageByte

public static byte[] writeImageByte(BufferedImage bi,
                                    String formatName)

写入 byte[]

参数:

bi -

formatName -

抛出:

IOException

jhlabs_filter

public static BufferedImage jhlabs_filter(BufferedImage bi,
                                          com.jhlabs.image.AbstractBufferedImageOp jhlabs)

滤镜处理

参数:

bi -

jhlabs -

返回:

writeImageFileCompress

public static void writeImageFileCompress(BufferedImage bi,
                                          File outputfile)

压缩

参数:

bi -

outputfile -

writeImageFileCompress

public static void writeImageFileCompress(BufferedImage bi,
                                          File outputfile,
                                          float Quality)

压缩

参数:

bi -

outputfile -

Quality - 参数qality是取值0~1范围内，不要低于0.3f,不高于0.9f

addWatermarkText

public static void addWatermarkText(BufferedImage bi,
                                    Font font,
                                    Color color,
                                    String text,
                                    int x,
                                    int y,
                                    float alph)

添加水印文字

参数:

bi -

font -

color -

text -

x -

y -

alph -

addWatermarkPic

public static void addWatermarkPic(BufferedImage bi,
                                   BufferedImage icon,
                                   int x,
                                   int y,
                                   float alph)

文件水印(图片)

参数:

bi -

icon -

x -

y -

alph -

另请参阅:

PressCSS

addWatermarkText

public static void addWatermarkText(BufferedImage bi,
                                    String text,
                                    int x,
                                    int y)

添加水印文字

参数:

bi -

text -

x -

y -

addWatermarkPic

public static void addWatermarkPic(BufferedImage bi,
                                   BufferedImage icon,
                                   int x,
                                   int y)

文件水印(图片)

参数:

bi -

icon -

x -

y -

另请参阅:

PressCSS

getSubimage

public static BufferedImage getSubimage(BufferedImage bi,
                                        int x,
                                        int y,
                                        int w,
                                        int h)

裁剪图片, 参数说明:

参数:

bi -

x - 裁剪起点横坐标

y - 裁剪起点纵坐标

w - 需要裁剪的宽度

h - 需要裁剪的高度

getScaledInstance

public static Image getScaledInstance(BufferedImage bi,
                                      int width,
                                      int height,
                                      int hints)

图片缩放, 参数说明:

参数:

bi -

width - 缩放后的宽度

height - 缩放后的高度

hints - 指示用于图像重新取样的算法类型的标志

hints 参数取值为以下之一（Image 类中的常量）: SCALE_AREA_AVERAGING: 使用 Area Averaging 图像缩放算法; SCALE_DEFAULT: 使用默认的图像缩放算法; SCALE_FAST: 选择一种图像缩放算法，在这种缩放算法中，缩放速度比缩放平滑度具有更高的优先级; SCALE_REPLICATE: 使用 ReplicateScaleFilter 类中包含的图像缩放算法; SCALE_SMOOTH: 选择图像平滑度比缩放速度具有更高优先级的图像缩放算法。

PS: 获取到的结果是 Image, 如果想转换为 BufferedImage, 可以创建一个相同宽高的空的 BufferedImage, 然后把获取到的 Image 绘制到 BufferedImage 上。

返回:

cutPic

public static BufferedImage cutPic(BufferedImage bi,
                                   CutConfig cutConfig)

图片裁剪

参数:

bi -

cutConfig -

另请参阅:

PressCSS

getTypeByStream

public static String getTypeByStream(FileInputStream is)

根据文件流读取图片文件真实类型

参数:

is -

返回:

getTypeByBytes

public static String getTypeByBytes(byte[] bytes)

根据文件流读取图片文件真实类型

参数:

is -

返回:

BufferedImageToBase64

public static String BufferedImageToBase64(BufferedImage bi,
                                           String formatName)

BufferedImage To Base64

参数:

bi -

formatName -

返回:

bytesToBufferedImage

public static BufferedImage bytesToBufferedImage(byte[] bytes)
                                          throws IOException

bytes To BufferedImage

参数:

bytes -

返回:

抛出:

IOException

BufferedImageToBytes

public static byte[] BufferedImageToBytes(BufferedImage bi,
                                          String formatName)

BufferedImage To Bytes

参数:

bi -

formatName -

返回:

bufferedImageToInputStream

public static InputStream bufferedImageToInputStream(BufferedImage image,
                                                     String formatName)

将BufferedImage转换为InputStream

参数:

image -

formatName -

返回:

zoomBufferedImage

public static BufferedImage zoomBufferedImage(BufferedImage image,
                                              int width,
                                              int height,
                                              int hints)

例缩

参数:

image -

width -

height -

hints - BufferedImage.SCALE_SMOOTH

返回: