Package tech.mgl.core.utils.img

Class MGL_ImageUtils

java.lang.Object

tech.mgl.core.utils.img.MGL_ImageUtils

public class MGL_ImageUtils
extends Object

ClassName: ImageUtils

Author:

hotpot https://mgl.tech

Constructor Summary

Constructors

Constructor	Description
MGL_ImageUtils()

Method Summary

Modifier and Type	Method	Description
static boolean	append(List<MGL_ImgVo> inputFileNameList, String outputFileName, int outputW, int outputH)	合并图片
static boolean	cropImage(String src, String dest, int x, int y, int w, int h)	图片裁剪
static void	downloadImage(String imageUrl, String savePath)	下载网络图片到本地
static byte[]	fetchNetImg(String url)	从网络获取图片字节数组
static BufferedImage	getTransparentImg(int width, int height)	获取一张透明图
static boolean	isImage(Object obj)
static boolean	isImage(String fileName)
static boolean	isImage(String fileName, List<String> ext)
static void	main(String[] args)
static BufferedImage	rotateImage(String srcPath, String destPath, int angel)	旋转图片，如果PNG图片旋转后背景是透明背景
static BufferedImage	rotateImage(String srcPath, String destPath, int angel, boolean setTran)	旋转图片，如果输入的是是JPG图片，当输出格式PNG并setTran=true时输出背景为透明

Methods inherited from class java.lang.Object

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

Constructor Details

MGL_ImageUtils

public MGL_ImageUtils()

Method Details

cropImage

public static boolean cropImage(String src,
 String dest,
 int x,
 int y,
 int w,
 int h)
                         throws IOException

图片裁剪

Parameters:

src - 原图

dest - 目标图

x - 起始X

y - 起始Y

w - 剪切宽度

h - 剪切高度

Returns:

boolean 返回类型

Throws:

IOException - 参数

rotateImage

public static BufferedImage rotateImage(String srcPath,
 String destPath,
 int angel)
                                 throws IOException

旋转图片，如果PNG图片旋转后背景是透明背景

Parameters:

srcPath - 原

destPath - 目

angel - 角度

Returns:

BufferedImage 返回类型

Throws:

IOException - 参数

rotateImage

public static BufferedImage rotateImage(String srcPath,
 String destPath,
 int angel,
 boolean setTran)
                                 throws IOException

旋转图片，如果输入的是是JPG图片，当输出格式PNG并setTran=true时输出背景为透明

Parameters:

srcPath -

destPath -

angel -

setTran -

Returns:

Throws:

IOException - 参数

getTransparentImg

public static BufferedImage getTransparentImg(int width,
 int height)

获取一张透明图

Parameters:

width -

height -

Returns:

参数

append

public static boolean append(List<MGL_ImgVo> inputFileNameList,
 String outputFileName,
 int outputW,
 int outputH)
                      throws Exception

合并图片

Parameters:

inputFileNameList -

outputFileName -

outputW -

outputH -

Returns:

Throws:

Exception - 参数

main

public static void main(String[] args)

isImage

public static boolean isImage(String fileName)

isImage

public static boolean isImage(String fileName,
 List<String> ext)

isImage

public static boolean isImage(Object obj)
                       throws Exception

Throws:

Exception

fetchNetImg

public static byte[] fetchNetImg(String url)
                          throws IOException

从网络获取图片字节数组

Parameters:

url - 图片的网络地址

Returns:

图片的字节数组，如果获取失败则抛出异常

Throws:

IOException - 如果网络请求失败或响应状态异常

downloadImage

public static void downloadImage(String imageUrl,
 String savePath)

下载网络图片到本地

Parameters:

imageUrl - 网络图片URL

savePath - 本地保存路径（包含文件名）

Throws:

IOException - 如果下载失败则抛出异常

InterruptedException - 如果请求被中断