cn.dslcode.common.core.file

类 ImageUtil

java.lang.Object

cn.dslcode.common.core.file.ImageUtil

public class ImageUtil
extends Object

图片工具类

作者:

董思林 2016-07-20

字段概要

字段

限定符和类型	字段和说明
static List<Font>	fonts 字体集合
static int	fontsLen 字体集合长度
static org.slf4j.Logger	log

构造器概要

构造器

构造器和说明
ImageUtil()

方法概要

限定符和类型	方法和说明
static void	createCaptchaImg(String captchaCode, javax.servlet.http.HttpServletResponse response) 生成验证码图片
static void	cut(String sourcePath, String targetPath) 裁剪，需自行实现，参考 http://rensanning.iteye.com/blog/1545708
static boolean	imageWidthAndHeight(InputStream inputStream, int width, int height) 判断图片尺寸，宽高
static void	imageWidthAndHeightBund(InputStream inputStream, long size, ImageCompare... imageCompares) 判断图片尺寸，宽高
static InputStream	QRCode(String text, String logo) 生成二维码
static void	rotate(BufferedImage bufferedImage, OutputStream outputStream, double scale, double angle) 图片旋转
static void	rotate(InputStream inputStream, OutputStream outputStream, double scale, double angle) 图片旋转
static void	rotate(String sourcePath, String targetPath, double scale, double angle) 图片旋转
static void	scale(BufferedImage bufferedImage, OutputStream outputStream, double scale) 图片按照比例缩放
static void	scale(BufferedImage bufferedImage, OutputStream outputStream, int width, int height, boolean isKeepAspectRatio) 图片按照尺寸缩放
static void	scale(InputStream inputStream, OutputStream outputStream, double scale) 图片按照比例缩放
static void	scale(InputStream inputStream, OutputStream outputStream, int width, int height, boolean isKeepAspectRatio) 图片按照尺寸缩放
static void	scale(String sourcePath, String targetPath, double scale) 图片按照比例缩放
static void	scale(String sourcePath, String targetPath, int width, int height, boolean isKeepAspectRatio) 图片按照尺寸缩放
static void	watermark(BufferedImage bufferedImage, OutputStream outputStream, double scale, net.coobird.thumbnailator.geometry.Position markPosition, InputStream markInputStream, float markOpacity) 图片添加水印
static void	watermark(InputStream inputStream, OutputStream outputStream, double scale, net.coobird.thumbnailator.geometry.Position markPosition, InputStream markInputStream, float markOpacity) 图片添加水印
static void	watermark(String sourcePath, String targetPath, double scale, net.coobird.thumbnailator.geometry.Position markPosition, InputStream markInputStream, float markOpacity) 图片添加水印

从类继承的方法 java.lang.Object

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

字段详细资料

log

public static final org.slf4j.Logger log

fonts

public static final List<Font> fonts

字体集合

fontsLen

public static int fontsLen

字体集合长度

构造器详细资料

ImageUtil

public ImageUtil()

方法详细资料

createCaptchaImg

public static void createCaptchaImg(String captchaCode,
                                    javax.servlet.http.HttpServletResponse response)
                             throws IOException

生成验证码图片

参数:

captchaCode - 验证码

response -

抛出:

IOException

QRCode

public static InputStream QRCode(String text,
                                 String logo)
                          throws Exception

生成二维码

参数:

text - 二维码链接地址

logo - 网页上的logo图片地址，没有logo则为null

返回:

抛出:

Exception

imageWidthAndHeight

public static boolean imageWidthAndHeight(InputStream inputStream,
                                          int width,
                                          int height)
                                   throws Exception

判断图片尺寸，宽高

参数:

inputStream -

width -

height -

返回:

抛出:

Exception

imageWidthAndHeightBund

public static void imageWidthAndHeightBund(InputStream inputStream,
                                           long size,
                                           ImageCompare... imageCompares)
                                    throws Exception

判断图片尺寸，宽高

参数:

inputStream -

size - 图片大小

imageCompares -

抛出:

Exception

scale

public static void scale(String sourcePath,
                         String targetPath,
                         int width,
                         int height,
                         boolean isKeepAspectRatio)

图片按照尺寸缩放

参数:

sourcePath -

targetPath -

width -

height -

isKeepAspectRatio - 是否保持长宽比

scale

public static void scale(InputStream inputStream,
                         OutputStream outputStream,
                         int width,
                         int height,
                         boolean isKeepAspectRatio)

图片按照尺寸缩放

参数:

inputStream -

outputStream -

width -

height -

isKeepAspectRatio - 是否保持长宽比

scale

public static void scale(BufferedImage bufferedImage,
                         OutputStream outputStream,
                         int width,
                         int height,
                         boolean isKeepAspectRatio)

图片按照尺寸缩放

参数:

bufferedImage -

outputStream -

width -

height -

isKeepAspectRatio - 是否保持长宽比

scale

public static void scale(String sourcePath,
                         String targetPath,
                         double scale)

图片按照比例缩放

参数:

sourcePath -

targetPath -

scale - 缩放比例 0.2 0.5 0.8 1 1.2 ..................

scale

public static void scale(InputStream inputStream,
                         OutputStream outputStream,
                         double scale)

图片按照比例缩放

参数:

inputStream -

outputStream -

scale - 缩放比例 0.2 0.5 0.8 1 1.2 ..................

scale

public static void scale(BufferedImage bufferedImage,
                         OutputStream outputStream,
                         double scale)

图片按照比例缩放

参数:

bufferedImage -

outputStream -

scale - 缩放比例 0.2 0.5 0.8 1 1.2 ..................

rotate

public static void rotate(String sourcePath,
                          String targetPath,
                          double scale,
                          double angle)

图片旋转

参数:

sourcePath -

targetPath -

scale - 缩放比例 0.2 0.5 0.8 1 1.2 ..................

angle - 旋转角度 正数：顺时针 负数：逆时针

rotate

public static void rotate(InputStream inputStream,
                          OutputStream outputStream,
                          double scale,
                          double angle)

图片旋转

参数:

inputStream -

outputStream -

scale - 缩放比例 0.2 0.5 0.8 1 1.2 ..................

angle - 旋转角度 正数：顺时针 负数：逆时针

rotate

public static void rotate(BufferedImage bufferedImage,
                          OutputStream outputStream,
                          double scale,
                          double angle)

图片旋转

参数:

bufferedImage -

outputStream -

scale - 缩放比例 0.2 0.5 0.8 1 1.2 ..................

angle - 旋转角度 正数：顺时针 负数：逆时针

watermark

public static void watermark(String sourcePath,
                             String targetPath,
                             double scale,
                             net.coobird.thumbnailator.geometry.Position markPosition,
                             InputStream markInputStream,
                             float markOpacity)

图片添加水印

参数:

sourcePath -

targetPath -

scale - 缩放比例 0.2 0.5 0.8 1 1.2 ..................

markPosition - 添加水印的位置 Positions.BOTTOM_RIGHT Positions.CENTER_RIGHT ...........

markInputStream - 水印图片inputStream

markOpacity - 水印图片透明度 0.2f 0.5f 0.8f 1f ..................

watermark

public static void watermark(InputStream inputStream,
                             OutputStream outputStream,
                             double scale,
                             net.coobird.thumbnailator.geometry.Position markPosition,
                             InputStream markInputStream,
                             float markOpacity)

图片添加水印

参数:

inputStream -

outputStream -

scale - 缩放比例 0.2 0.5 0.8 1 1.2 ..................

markPosition - 添加水印的位置 Positions.BOTTOM_RIGHT Positions.CENTER_RIGHT ...........

markInputStream - 水印图片inputStream

markOpacity - 水印图片透明度 0.2f 0.5f 0.8f 1f ..................

watermark

public static void watermark(BufferedImage bufferedImage,
                             OutputStream outputStream,
                             double scale,
                             net.coobird.thumbnailator.geometry.Position markPosition,
                             InputStream markInputStream,
                             float markOpacity)

图片添加水印

参数:

bufferedImage -

outputStream -

scale - 缩放比例 0.2 0.5 0.8 1 1.2 ..................

markPosition - 添加水印的位置 Positions.BOTTOM_RIGHT Positions.CENTER_RIGHT ...........

markInputStream - 水印图片inputStream

markOpacity - 水印图片透明度 0.2f 0.5f 0.8f 1f ..................

cut

public static void cut(String sourcePath,
                       String targetPath)

裁剪，需自行实现，参考 http://rensanning.iteye.com/blog/1545708

参数:

sourcePath -

targetPath -