「javalogo管理」java log 框架

admin 2023-01-10 02:39:08 744

今天给各位分享javalogo管理的知识，其中也会对java log 框架进行解释，如果能碰巧解决你现在面临的问题，别忘了关注本站，现在开始吧！

本文目录一览：

1、用Java绘制百度logo？
2、用java给视频水印LOGO
3、Java用的.jar包图标跟以前不一样了，图标上没有Java的logo，怎么办。
4、如何去JAVA LOGO

用Java绘制百度logo？

//可以通过水印的方法打上去。

import java.awt.AlphaComposite;

import java.awt.Color;

import java.awt.Font;

import java.awt.Graphics2D;

import java.awt.Image;

import java.awt.geom.AffineTransform;

import java.awt.image.AffineTransformOp;

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.IOException;

import javax.imageio.ImageIO;

/**

* 图片工具类，图片水印，文字水印，缩放，补白等

public final class ImageUtils {

/**图片格式：JPG*/

private static final String PICTRUE_FORMATE_JPG = "jpg";

private ImageUtils(){}

/**

* 添加图片水印

* @param targetImg 目标图片路径，如：C://myPictrue//1.jpg

* @param waterImg 水印图片路径，如：C://myPictrue//logo.png

* @param x 水印图片距离目标图片左侧的偏移量，如果x0, 则在正中间

* @param y 水印图片距离目标图片上侧的偏移量，如果y0, 则在正中间

* @param alpha 透明度(0.0 -- 1.0, 0.0为完全透明，1.0为完全不透明)

public final static void pressImage(String targetImg, String waterImg, int x, int y, float alpha) {

try {

File file = new File(targetImg);

Image image = ImageIO.read(file);

int width = image.getWidth(null);

int height = image.getHeight(null);

BufferedImage bufferedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

Graphics2D g = bufferedImage.createGraphics();

g.drawImage(image, 0, 0, width, height, null);

Image waterImage = ImageIO.read(new File(waterImg)); // 水印文件

int width_1 = waterImage.getWidth(null);

int height_1 = waterImage.getHeight(null);

g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha));

int widthDiff = width - width_1;

int heightDiff = height - height_1;

if(x 0){

x = widthDiff / 2;

}else if(x widthDiff){

x = widthDiff;

}

if(y 0){

y = heightDiff / 2;

}else if(y heightDiff){

y = heightDiff;

}

g.drawImage(waterImage, x, y, width_1, height_1, null); // 水印文件结束

g.dispose();

ImageIO.write(bufferedImage, PICTRUE_FORMATE_JPG, file);

} catch (IOException e) {

e.printStackTrace();

}

/**

* 添加文字水印

* @param targetImg 目标图片路径，如：C://myPictrue//1.jpg

* @param pressText 水印文字，如：中国证券网

* @param fontName 字体名称，如：宋体

* @param fontStyle 字体样式，如：粗体和斜体(Font.BOLD|Font.ITALIC)

* @param fontSize 字体大小，单位为像素

* @param color 字体颜色

* @param x 水印文字距离目标图片左侧的偏移量，如果x0, 则在正中间

* @param y 水印文字距离目标图片上侧的偏移量，如果y0, 则在正中间

* @param alpha 透明度(0.0 -- 1.0, 0.0为完全透明，1.0为完全不透明)

public static void pressText(String targetImg, String pressText, String fontName, int fontStyle, int fontSize, Color color, int x, int y, float alpha) {

try {

File file = new File(targetImg);

Image image = ImageIO.read(file);

int width = image.getWidth(null);

int height = image.getHeight(null);

BufferedImage bufferedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

Graphics2D g = bufferedImage.createGraphics();

g.drawImage(image, 0, 0, width, height, null);

g.setFont(new Font(fontName, fontStyle, fontSize));

g.setColor(color);

g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha));

int width_1 = fontSize * getLength(pressText);

int height_1 = fontSize;

int widthDiff = width - width_1;

int heightDiff = height - height_1;

if(x 0){

x = widthDiff / 2;

}else if(x widthDiff){

x = widthDiff;

}

if(y 0){

y = heightDiff / 2;

}else if(y heightDiff){

y = heightDiff;

}

g.drawString(pressText, x, y + height_1);

g.dispose();

ImageIO.write(bufferedImage, PICTRUE_FORMATE_JPG, file);

} catch (Exception e) {

e.printStackTrace();

}

/**

* 获取字符长度，一个汉字作为 1 个字符, 一个英文字母作为 0.5 个字符

* @param text

* @return 字符长度，如：text="中国",返回 2；text="test",返回 2；text="中国ABC",返回 4.

public static int getLength(String text) {

int textLength = text.length();

int length = textLength;

for (int i = 0; i textLength; i++) {

if (String.valueOf(text.charAt(i)).getBytes().length 1) {

length++;

}

return (length % 2 == 0) ? length / 2 : length / 2 + 1;

}

/**

* 图片缩放

* @param filePath 图片路径

* @param height 高度

* @param width 宽度

* @param bb 比例不对时是否需要补白

public static void resize(String filePath, int height, int width, boolean bb) {

try {

double ratio = 0; //缩放比例

File f = new File(filePath);

BufferedImage bi = ImageIO.read(f);

Image itemp = bi.getScaledInstance(width, height, BufferedImage.SCALE_SMOOTH);

//计算比例

if ((bi.getHeight() height) || (bi.getWidth() width)) {

if (bi.getHeight() bi.getWidth()) {

ratio = (new Integer(height)).doubleValue() / bi.getHeight();

} else {

ratio = (new Integer(width)).doubleValue() / bi.getWidth();

}

AffineTransformOp op = new AffineTransformOp(AffineTransform.getScaleInstance(ratio, ratio), null);

itemp = op.filter(bi, null);

}

if (bb) {

BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

Graphics2D g = image.createGraphics();

g.setColor(Color.white);

g.fillRect(0, 0, width, height);

if (width == itemp.getWidth(null))

g.drawImage(itemp, 0, (height - itemp.getHeight(null)) / 2, itemp.getWidth(null), itemp.getHeight(null), Color.white, null);

else

g.drawImage(itemp, (width - itemp.getWidth(null)) / 2, 0, itemp.getWidth(null), itemp.getHeight(null), Color.white, null);

g.dispose();

itemp = image;

}

ImageIO.write((BufferedImage) itemp, "jpg", f);

} catch (IOException e) {

e.printStackTrace();

}

public static void main(String[] args) throws IOException {

pressImage("D:/2.jpg", "D:/1.jpg", 0, 0, 1);

System.out.println("处理完毕！");

}

原文：

用java给视频水印LOGO

用过滤器,等我上线给你,不要结问题哦

package com.jc.ts.services;

import java.awt.Color;

import java.awt.Graphics;

import java.awt.Image;

import java.awt.image.BufferedImage;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import javax.imageio.ImageIO;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import com.sun.image.codec.jpeg.ImageFormatException;

import com.sun.image.codec.jpeg.JPEGCodec;

import com.sun.image.codec.jpeg.JPEGImageEncoder;

/**

*添加图片水印的服务类

* */

public class WaterMark {

/**

* @param sizeContext添加水印文字

* @param request 请求流对象

* @param request 响应流对象

* */

@SuppressWarnings("deprecation")

public static void createMarkSize(String sizeContext,HttpServletRequest request,HttpServletResponse response) {

try {

String path=request.getRealPath(request.getServletPath());

FileInputStream in=new FileInputStream(path);

Image src=ImageIO.read(in);

int w=src.getWidth(null);

int h=src.getHeight(null);

BufferedImage img=new BufferedImage(w,h,BufferedImage.TYPE_INT_RGB);//构建画板

Graphics g=img.getGraphics();//得到画笔

g.drawImage(src,0,0,w,h,null);//把源图片写入画板

g.setColor(Color.red);

g.drawString(sizeContext,10,5); // 添加文字

g.dispose();//生成图片

JPEGImageEncoder e=JPEGCodec.createJPEGEncoder(response.getOutputStream());

e.encode(img);

response.getOutputStream().close();

} catch (FileNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (ImageFormatException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

/**

* @param localPath 添加水印LOGO路径

* @param request 请求流对象

* @param request 响应流对象

**/

@SuppressWarnings("deprecation")

public static void createMarkLogo(String localPath,HttpServletRequest request,HttpServletResponse response) {

try {

FileInputStream file=new FileInputStream(localPath);

Image fimg=ImageIO.read(file);

int fw=fimg.getWidth(null);

int fh=fimg.getHeight(null);

String path=request.getRealPath(request.getServletPath());

FileInputStream in=new FileInputStream(path);

Image src=ImageIO.read(in);

int w=src.getWidth(null);

int h=src.getHeight(null);

BufferedImage img=new BufferedImage(w,h,BufferedImage.TYPE_INT_RGB);//构建画板

Graphics g=img.getGraphics();//得到画笔

g.drawImage(src,0,0,w,h,null);//把原图片写入画板

g.drawImage(fimg,w-20,h-15,fw,fh,null);//把水印图片写入画板

g.dispose();//生成图片

JPEGImageEncoder e=JPEGCodec.createJPEGEncoder(response.getOutputStream());

e.encode(img);

response.getOutputStream().close();

} catch (FileNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (ImageFormatException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

/**

* @param localPath 添加水印图片路径

* @param request 请求流对象

* @param request 响应流对象

* @param width 水印图片的宽度

* @param height 水印图片的长度

**/

@SuppressWarnings("deprecation")

public static void createMarkLogo(String localPath,HttpServletRequest request,HttpServletResponse response,int width,int height) {

try {

FileInputStream file=new FileInputStream(localPath);

Image fimg=ImageIO.read(file);

int fw=fimg.getWidth(null);

int fh=fimg.getHeight(null);

String path=request.getRealPath(request.getServletPath());

FileInputStream in=new FileInputStream(path);

Image src=ImageIO.read(in);

int w=src.getWidth(null);//w为你过滤图片的宽度

int h=src.getHeight(null);//h为你过滤图片的长度

BufferedImage img=new BufferedImage(w+width,h+height,BufferedImage.TYPE_INT_RGB);//构建画板(画板的宽度为两个图片之和)

Graphics g=img.getGraphics();//得到画笔

g.drawImage(src,0,0,w,h,null);//把原图片写入画板

g.drawImage(fimg,width,height,fw,fh,null);//把水印图片写入画板

g.dispose();//生成图片

JPEGImageEncoder e=JPEGCodec.createJPEGEncoder(response.getOutputStream());

e.encode(img);

response.getOutputStream().close();

} catch (FileNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (ImageFormatException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

注意第三个方法的注释地方g.drawImage(fimg,width,height,fw,fh,null);根据参数你在调调(放原图下面的)

过滤器调用

package com.jc.ts.filter;

import java.io.IOException;

import javax.servlet.Filter;

import javax.servlet.FilterChain;

import javax.servlet.FilterConfig;

import javax.servlet.ServletException;

import javax.servlet.ServletRequest;

import javax.servlet.ServletResponse;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import com.jc.ts.services.WaterMark;

public class WaterFilter implements Filter {

public void destroy() {

// TODO Auto-generated method stub

}

public void doFilter(ServletRequest arg0, ServletResponse arg1,

FilterChain arg2) throws IOException, ServletException {

HttpServletRequest request=(HttpServletRequest)arg0;

HttpServletResponse response=(HttpServletResponse)arg1;

//WaterMark.createMarkSize("南京ts", request, response);

//WaterMark.createMarkLogo("D:\\workspace\\mybook\\WebRoot\\images\\logo\\book.jpg", request, response);

WaterMark.createMarkLogo("D:\\workspace\\mybook\\WebRoot\\images\\logo\\book.jpg", request, response,20,30);

//注意路径为绝对路径且三个效果不能同时执行

}

public void init(FilterConfig arg0) throws ServletException {

// TODO Auto-generated method stub

}

web.xml配置(写在servlet上面)

filter

descriptionThis is the description of my J2EE component/description

display-nameThis is the display name of my J2EE component/display-name

filter-nameWaterFilter/filter-name

filter-classcom.jc.ts.filter.WaterFilter/filter-class

/filter

希望你能满意。。。。。。

Java用的.jar包图标跟以前不一样了，图标上没有Java的logo，怎么办。

选中jar文件右键选择打开方式先勾选总是以这种方式打开此应用然后点击更多应用滑到最下面点击从电脑其他应用里查找之后在找到你的jdk安装位置在bin目录下有一个java.exe选择它然后就可以解决你的问题了反正我的win10系统是有用的不知道我不打标点符号你能不能看懂最后说一句java天下第一！！！！！！！！

如何去JAVA LOGO

不用取，只要你在程序中指定了自己的logo，java的logo就被替换掉了。

关于javalogo管理和java log 框架的介绍到此就结束了，不知道你从中找到你需要的信息了吗？如果你还想了解更多这方面的信息，记得收藏关注本站。

标签：javalogo管理