net.dreamlu.mica.core.utils

Class ImageUtil

java.lang.Object

net.dreamlu.mica.core.utils.ImageUtil

public class ImageUtil
extends Object

image 工具

Author:

L.cm

Constructor Summary

Constructors

Constructor and Description
ImageUtil()

Method Summary

Modifier and Type	Method and Description
static BufferedImage	read(File input) 读取图片
static BufferedImage	read(InputStream input) 读取图片
static BufferedImage	read(String url) 读取图片，http 或者 file 地址
static BufferedImage	read(URL url) 读取图片
static boolean	write(RenderedImage im, String formatName, File output) 写出图片
static boolean	write(RenderedImage im, String formatName, ImageOutputStream output) 写出图片
static boolean	write(RenderedImage im, String formatName, OutputStream output) 写出图片
static byte[]	writeAsBytes(RenderedImage im, String formatName) 写出图片为 byte 数组
static ByteArrayInputStream	writeAsStream(RenderedImage im, String formatName) 写出图片为 InputStream

Methods inherited from class java.lang.Object

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

Constructor Detail

ImageUtil

public ImageUtil()

Method Detail

read

public static BufferedImage read(File input)

读取图片

Parameters:

input - 图片文件

Returns:

BufferedImage

read

public static BufferedImage read(InputStream input)

读取图片

Parameters:

input - 图片文件流

Returns:

BufferedImage

read

public static BufferedImage read(String url)

读取图片，http 或者 file 地址

Parameters:

url - 图片链接地址

Returns:

BufferedImage

read

public static BufferedImage read(URL url)

读取图片

Parameters:

url - 图片链接地址

Returns:

BufferedImage

write

public static boolean write(RenderedImage im,
                            String formatName,
                            ImageOutputStream output)

写出图片

Parameters:

im - RenderedImage to be written.

formatName - a String containing the informal name of the format.

output - an ImageOutputStream to be written to.

Returns:

false if no appropriate writer is found.

write

public static boolean write(RenderedImage im,
                            String formatName,
                            File output)

写出图片

Parameters:

im - RenderedImage to be written.

formatName - a String containing the informal name of the format.

output - an ImageOutputStream to be written to.

Returns:

false if no appropriate writer is found.

write

public static boolean write(RenderedImage im,
                            String formatName,
                            OutputStream output)

写出图片

Parameters:

im - RenderedImage to be written.

formatName - a String containing the informal name of the format.

output - an ImageOutputStream to be written to.

Returns:

false if no appropriate writer is found.

writeAsBytes

public static byte[] writeAsBytes(RenderedImage im,
                                  String formatName)

写出图片为 byte 数组

Parameters:

im - RenderedImage to be written.

formatName - a String containing the informal name of the format.

Returns:

false if no appropriate writer is found.

writeAsStream

public static ByteArrayInputStream writeAsStream(RenderedImage im,
                                                 String formatName)

写出图片为 InputStream

Parameters:

im - RenderedImage to be written.

formatName - a String containing the informal name of the format.

Returns:

false if no appropriate writer is found.