程序包 com.publiccms.common.tools

类 ImageUtils

java.lang.Object

com.publiccms.common.tools.ImageUtils

public class ImageUtils
extends Object

ImageUtils

字段概要

字段

修饰符和类型	字段	说明
static final String	DEFAULT_FORMAT_NAME
static final String	FORMAT_NAME_JPG
static final String	FORMAT_NAME_PNG
static final String	FORMAT_NAME_SVG
static final String	FORMAT_NAME_WEBP
private static final org.apache.commons.logging.Log	log

构造器概要

构造器

限定符	构造器	说明
private	ImageUtils()

方法概要

修饰符和类型	方法	说明
static void	drawImage(int width, int height, String text, OutputStream outputStream)	@RequestMapping(value = "getCaptchaImage") public ResponseEntity<StreamingResponseBody> getCaptchaImage(HttpSession session) { String captcha = VerificationUtils.getRandomString("ABCDEFGHJKMNPQRSTUVWXYZ23456789", 4); session.setAttribute("captcha", captcha); StreamingResponseBody body = new StreamingResponseBody() { @Override public void writeTo(OutputStream outputStream) throws IOException { ImageUtils.drawImage(120, 30, captcha, outputStream); } }; return ResponseEntity.ok().body(body); }
static String	generateImageData(int width, int height, String text)
static int	getAngle(File file)
private static Font	getFont(int size)
private static Color	getRandColor(int fc, int bc)
static void	image2Ico(InputStream input, String suffix, int size, String icoFilepath)
static void	image2Webp(String imageFilepath, String webpFilepath)
private static int	matermarkPosition(String position, int width, int height, int watermarkWidth, int watermarkHeight, int textWidth, int textHeight, boolean x, boolean text)
private static void	shearX(Graphics g, int w1, int h1, Color color)
static boolean	svgSafe(File imageFile)
static BufferedImage	thumb(BufferedImage sourceImage, int width, int height, int angle, boolean png)
static void	thumb(String sourceFilePath, String thumbFilePath, int width, int height, String suffix)
static void	watermark(String sourceFilePath, String watermarkFilePath, String watermarkText, String color, String font, int fontsize, float alpha, String position, String suffix)
static void	webp2Image(InputStream webpInputStream, boolean png, String imageFilepath)
static void	webp2Image(String webpFilepath, boolean png, String imageFilepath)

从类继承的方法 java.lang.Object

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

字段详细资料

log

private static final org.apache.commons.logging.Log log

FORMAT_NAME_PNG

public static final String FORMAT_NAME_PNG

另请参阅:

• 常量字段值

FORMAT_NAME_JPG

public static final String FORMAT_NAME_JPG

另请参阅:

• 常量字段值

FORMAT_NAME_WEBP

public static final String FORMAT_NAME_WEBP

另请参阅:

• 常量字段值

FORMAT_NAME_SVG

public static final String FORMAT_NAME_SVG

另请参阅:

• 常量字段值

DEFAULT_FORMAT_NAME

public static final String DEFAULT_FORMAT_NAME

另请参阅:

• 常量字段值

构造器详细资料

ImageUtils

private ImageUtils()

方法详细资料

generateImageData

public static String generateImageData(int width,
 int height,
 String text)
                                throws IOException

参数:

width -

height -

text -

返回:

base64 encoded picture

抛出:

IOException

drawImage

public static void drawImage(int width,
 int height,
 String text,
 OutputStream outputStream)
                      throws IOException

 @RequestMapping(value = "getCaptchaImage")
 public ResponseEntity<StreamingResponseBody> getCaptchaImage(HttpSession session) {
     String captcha = VerificationUtils.getRandomString("ABCDEFGHJKMNPQRSTUVWXYZ23456789", 4);
     session.setAttribute("captcha", captcha);
     StreamingResponseBody body = new StreamingResponseBody() {
         @Override
         public void writeTo(OutputStream outputStream) throws IOException {
             ImageUtils.drawImage(120, 30, captcha, outputStream);
         }
     };
     return ResponseEntity.ok().body(body);
 }
 

 @PostMapping("doLogin")
 public String login(@RequestAttribute SysSite site, HttpSession session, String username, String password, String captcha, String returnUrl, Long clientId, String uuid,
         HttpServletRequest request, ModelMap model) {
     String sessionCaptcha = (String) session.getAttribute("captcha");
     session.removeAttribute("captcha");
     if (null != sessionCaptcha && sessionCaptcha.equalsIgnoreCase(captcha)) {
         // login code
     } else {
         return CommonUtils.joinString(UrlBasedViewResolver.REDIRECT_URL_PREFIX, "login.html");
     }
 }
 

参数:

width -

height -

text -

outputStream -

抛出:

IOException

shearX

private static void shearX(Graphics g,
 int w1,
 int h1,
 Color color)

getRandColor

private static Color getRandColor(int fc,
 int bc)

getFont

private static Font getFont(int size)

webp2Image

public static void webp2Image(InputStream webpInputStream,
 boolean png,
 String imageFilepath)
                       throws IOException

抛出:

IOException

webp2Image

public static void webp2Image(String webpFilepath,
 boolean png,
 String imageFilepath)
                       throws IOException

抛出:

IOException

image2Webp

public static void image2Webp(String imageFilepath,
 String webpFilepath)
                       throws IOException

抛出:

IOException

image2Ico

public static void image2Ico(InputStream input,
 String suffix,
 int size,
 String icoFilepath)
                      throws IOException

抛出:

IOException

svgSafe

public static boolean svgSafe(File imageFile)
                       throws IOException

抛出:

IOException

thumb

public static BufferedImage thumb(BufferedImage sourceImage,
 int width,
 int height,
 int angle,
 boolean png)

thumb

public static void thumb(String sourceFilePath,
 String thumbFilePath,
 int width,
 int height,
 String suffix)
                  throws IOException,
com.drew.imaging.ImageProcessingException

抛出:

IOException

com.drew.imaging.ImageProcessingException

getAngle

public static int getAngle(File file)
                    throws com.drew.imaging.ImageProcessingException,
IOException

抛出:

com.drew.imaging.ImageProcessingException

IOException

watermark

public static void watermark(String sourceFilePath,
 String watermarkFilePath,
 String watermarkText,
 String color,
 String font,
 int fontsize,
 float alpha,
 String position,
 String suffix)
                      throws IOException

抛出:

IOException

matermarkPosition

private static int matermarkPosition(String position,
 int width,
 int height,
 int watermarkWidth,
 int watermarkHeight,
 int textWidth,
 int textHeight,
 boolean x,
 boolean text)