|
|
@@ -1,134 +0,0 @@
|
|
|
-package com.java110.api.rest;
|
|
|
-
|
|
|
-import java.awt.Color;
|
|
|
-import java.awt.Graphics;
|
|
|
-import java.awt.Image;
|
|
|
-import java.awt.image.BufferedImage;
|
|
|
-import java.io.BufferedInputStream;
|
|
|
-import java.io.ByteArrayInputStream;
|
|
|
-import java.io.ByteArrayOutputStream;
|
|
|
-import java.io.File;
|
|
|
-import java.io.FileInputStream;
|
|
|
-import java.io.IOException;
|
|
|
-import java.io.InputStream;
|
|
|
-import java.util.Arrays;
|
|
|
-
|
|
|
-import javax.imageio.ImageIO;
|
|
|
-import javax.imageio.stream.FileImageOutputStream;
|
|
|
-
|
|
|
-public class PicTest {
|
|
|
-
|
|
|
- static int a = 0;
|
|
|
- public static void main(String[] args) throws IOException {
|
|
|
- /*long timeStart = System.currentTimeMillis();
|
|
|
- String imgLocalUrl = "D:\\白静雪.jpg";
|
|
|
-
|
|
|
- byte[] imgBytes = getByteByPic(imgLocalUrl);
|
|
|
- byte[] resultImg = compressUnderSize(imgBytes,800 * 1024);
|
|
|
- byte2image(resultImg,"E:\\tp\\timga.jpg");
|
|
|
- long timeEnd = System.currentTimeMillis();
|
|
|
- System.out.println("耗时:"+ (timeEnd - timeStart));*/
|
|
|
- char i= 8;
|
|
|
- int j = 0;
|
|
|
- for (;i >0;j-=3){
|
|
|
- ++j;
|
|
|
- }
|
|
|
- System.out.printf("%d\n",j);
|
|
|
-
|
|
|
- // System.out.printf("a= "+ fib(5));
|
|
|
- }
|
|
|
-
|
|
|
- public static int fib(int i) {
|
|
|
- a++;
|
|
|
- if(i == 0){
|
|
|
- return 1;
|
|
|
- }else{
|
|
|
- if(i== 1){
|
|
|
- return 2;
|
|
|
- }else{
|
|
|
- return fib(i-1)+fib(i-2);
|
|
|
- }
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- public static byte[] getByteByPic(String imageUrl) throws IOException{
|
|
|
- File imageFile = new File(imageUrl);
|
|
|
- InputStream inStream = new FileInputStream(imageFile);
|
|
|
- BufferedInputStream bis = new BufferedInputStream(inStream);
|
|
|
- BufferedImage bm = ImageIO.read(bis);
|
|
|
- ByteArrayOutputStream bos = new ByteArrayOutputStream();
|
|
|
- String type = imageUrl.substring(imageUrl.length() - 3);
|
|
|
- ImageIO.write(bm, type, bos);
|
|
|
- bos.flush();
|
|
|
- byte[] data = bos.toByteArray();
|
|
|
- return data;
|
|
|
- }
|
|
|
- /**
|
|
|
- * 将图片压缩到指定大小以内
|
|
|
- *
|
|
|
- * @param srcImgData 源图片数据
|
|
|
- * @param maxSize 目的图片大小
|
|
|
- * @return 压缩后的图片数据
|
|
|
- */
|
|
|
- public static byte[] compressUnderSize(byte[] srcImgData, long maxSize) {
|
|
|
- double scale = 0.9;
|
|
|
- byte[] imgData = Arrays.copyOf(srcImgData, srcImgData.length);
|
|
|
-
|
|
|
- if (imgData.length > maxSize) {
|
|
|
- do {
|
|
|
- try {
|
|
|
- imgData = compress(imgData, scale);
|
|
|
-
|
|
|
- } catch (IOException e) {
|
|
|
- throw new IllegalStateException("压缩图片过程中出错,请及时联系管理员!", e);
|
|
|
- }
|
|
|
-
|
|
|
- } while (imgData.length > maxSize);
|
|
|
- }
|
|
|
-
|
|
|
- return imgData;
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * 按照 宽高 比例压缩
|
|
|
- *
|
|
|
- * @param scale 压缩刻度
|
|
|
- * @return 压缩后图片数据
|
|
|
- * @throws IOException 压缩图片过程中出错
|
|
|
- */
|
|
|
- public static byte[] compress(byte[] srcImgData, double scale) throws IOException {
|
|
|
- BufferedImage bi = ImageIO.read(new ByteArrayInputStream(srcImgData));
|
|
|
- int width = (int) (bi.getWidth() * scale); // 源图宽度
|
|
|
- int height = (int) (bi.getHeight() * scale); // 源图高度
|
|
|
-
|
|
|
- Image image = bi.getScaledInstance(width, height, Image.SCALE_SMOOTH);
|
|
|
- BufferedImage tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
|
|
|
-
|
|
|
- Graphics g = tag.getGraphics();
|
|
|
- g.setColor(Color.RED);
|
|
|
- g.drawImage(image, 0, 0, null); // 绘制处理后的图
|
|
|
- g.dispose();
|
|
|
-
|
|
|
- ByteArrayOutputStream bOut = new ByteArrayOutputStream();
|
|
|
- ImageIO.write(tag, "JPEG", bOut);
|
|
|
-
|
|
|
- return bOut.toByteArray();
|
|
|
- }
|
|
|
-
|
|
|
- //byte数组到图片
|
|
|
- public static void byte2image(byte[] data,String path){
|
|
|
- if(data.length<3||path.equals("")) return;
|
|
|
- try{
|
|
|
- FileImageOutputStream imageOutput = new FileImageOutputStream(new File(path));
|
|
|
- imageOutput.write(data, 0, data.length);
|
|
|
- imageOutput.close();
|
|
|
- System.out.println("Make Picture success,Please find image in " + path);
|
|
|
- } catch(Exception ex) {
|
|
|
- System.out.println("Exception: " + ex);
|
|
|
- ex.printStackTrace();
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
-}
|