cn.jiangzeyin.util.util.images

类 ImageUtil

java.lang.Object

cn.jiangzeyin.util.util.images.ImageUtil

public final class ImageUtil
extends java.lang.Object

图片操作工具类

作者:

jiangzeyin

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 boolean	checkPx(java.io.InputStream inputStream, int width, int height)
static boolean	checkPx(java.lang.String path, int width, int height)
static boolean	downloadImageUrl(java.lang.String imgUrl, java.lang.String imgdist) 下载图片
static boolean	downloadImageUrl(java.lang.String imgUrl, java.lang.String imgdist, int width, int height) 下载图片
static java.awt.image.BufferedImage	getBufferedImage(java.lang.String imgUrl) 获取图片信息
static int	getHeight(java.lang.String path)
static java.lang.Object[]	getRandomCode() 生成二维码
static int	getWidth(java.lang.String path)
static boolean	ImageIsTrue(java.lang.String path) 判断图片是否可以正常打开
static void	reduceImg(java.awt.image.BufferedImage src, java.lang.String imgdist, int widthdist, int heightdist) 压缩图片
static void	resize(java.io.File originalFile, java.io.File resizedFile, int newWidth, float quality) 压缩图片(保持图片比例)
static boolean	writeImage(java.awt.image.BufferedImage image, java.lang.String fileName) 写图片

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

ImageUtil

public ImageUtil()

方法详细资料

getRandomCode

public static java.lang.Object[] getRandomCode()
                                        throws java.io.IOException

生成二维码

返回:

r

抛出:

java.io.IOException - io

ImageIsTrue

public static boolean ImageIsTrue(java.lang.String path)

判断图片是否可以正常打开

参数:

path - path

返回:

boolean

getBufferedImage

public static java.awt.image.BufferedImage getBufferedImage(java.lang.String imgUrl)
                                                     throws java.io.IOException

获取图片信息

参数:

imgUrl - url

返回:

r

抛出:

java.io.IOException - io

downloadImageUrl

public static boolean downloadImageUrl(java.lang.String imgUrl,
                                       java.lang.String imgdist,
                                       int width,
                                       int height)
                                throws java.io.IOException

下载图片

参数:

imgUrl - url

imgdist - d

width - w

height - h

返回:

boolean

抛出:

java.io.IOException - io

downloadImageUrl

public static boolean downloadImageUrl(java.lang.String imgUrl,
                                       java.lang.String imgdist)
                                throws java.io.IOException

下载图片

参数:

imgUrl - url

imgdist - i

返回:

boolean

抛出:

java.io.IOException - io

reduceImg

public static void reduceImg(java.awt.image.BufferedImage src,
                             java.lang.String imgdist,
                             int widthdist,
                             int heightdist)
                      throws com.sun.image.codec.jpeg.ImageFormatException,
                             java.io.IOException

压缩图片

参数:

src - src

imgdist - d

widthdist - w

heightdist - h

抛出:

com.sun.image.codec.jpeg.ImageFormatException - fe

java.io.IOException - io

writeImage

public static boolean writeImage(java.awt.image.BufferedImage image,
                                 java.lang.String fileName)
                          throws java.io.IOException

写图片

参数:

image - img

fileName - fileName

返回:

boolean

抛出:

java.io.IOException - io

resize

public static void resize(java.io.File originalFile,
                          java.io.File resizedFile,
                          int newWidth,
                          float quality)
                   throws java.io.IOException

压缩图片(保持图片比例)

参数:

originalFile - 原图片

resizedFile - 目标图片

newWidth - 新的宽度

quality - 压缩率

抛出:

java.io.IOException - io

getWidth

public static int getWidth(java.lang.String path)
                    throws java.io.IOException

抛出:

java.io.IOException

getHeight

public static int getHeight(java.lang.String path)
                     throws java.io.IOException

抛出:

java.io.IOException

checkPx

public static boolean checkPx(java.lang.String path,
                              int width,
                              int height)
                       throws java.io.IOException

抛出:

java.io.IOException

checkPx

public static boolean checkPx(java.io.InputStream inputStream,
                              int width,
                              int height)
                       throws java.io.IOException

抛出:

java.io.IOException