Accumulate Kuibu, Poly stream------Java get the dimensions of the picture

In an article, get it in one of the following two ways:

1, using ImageReader to obtain;

2, using BufferedImage to obtain;

and verified that the ImageReader takes much less time to operate than the bufferedimage operation, see the link to see the original

Then according to the application I make a slight change in the project, recorded here:

<span style= "FONT-SIZE:14PX;" >package com.jzba.utils;import java.awt.image.bufferedimage;import Java.io.file;import java.io.FileInputStream; Import Java.io.filenotfoundexception;import java.io.ioexception;import java.util.date;import java.util.HashMap; Import Java.util.iterator;import java.util.map;import javax.imageio.imageio;import javax.imageio.ImageReader;     Import javax.imageio.stream.imageinputstream;//Get the picture's long-width size public class Imageutil {/** * source picture path name such as: D:/zz/over.png    */private String Srcpath = "D:/zz/over.png";  Public Imageutil () {}//local validation public static void main (string[] args) throws Exception {Imageutil util =        New Imageutil ();    Util.getimagesizebybufferedimage (Util.getsrcpath ());    The size of the corresponding picture according to the picture path public Map getsize (String srcpath) {imageutil util = new Imageutil ();    Map<string, Integer> map=util.getimagesizebybufferedimage (Util.getsrcpath ());    return map; /** * Use ImageReader to get picture size * * @paraM src * Source picture path */public void Getimagesizebyimagereader (String src) {long beginTime = new Dat        E (). GetTime ();        File File = new file (src);            try {iterator<imagereader> readers = imageio.getimagereadersbyformatname ("jpg");            ImageReader reader = (imagereader) readers.next ();            Imageinputstream IIS = imageio.createimageinputstream (file); Reader.setinput (IIS, True);//System.out.println ("width:" + reader.getwidth (0));//System.out.println ("H        Eight: "+ reader.getheight (0));        } catch (IOException e) {e.printstacktrace (); } Long EndTime = new Date (). GetTime ();//System.out.println ("Use [ImageReader] to get picture size time: [" + (Endtime-begintime    ) + "]ms"); }///**//* Use BufferedImage to get picture size//*//* @param src//* source picture path//*///public void ge      Timagesizebybufferedimage (String src) {//Long beginTime = new Date (). GetTime ();//  File File = new file (src);//FileInputStream is = null;//try {//is = new FileInputStream (file );//} catch (FileNotFoundException E2) {//E2.printstacktrace ();//}//BufferedImage Sour Ceimg = null;//try {//sourceimg = Javax.imageio.ImageIO.read (IS);//System.out.println ("wid Th: "+ sourceimg.getwidth ());//System.out.println (" Height: "+ sourceimg.getheight ());/} catch (Ioexce Ption E1) {//E1.printstacktrace ();//}//long endTime = new Date (). GetTime ();//System.ou     T.PRINTLN ("Use [bufferedimage] to get picture size time: [" + (Endtime-begintime) + "]ms");/}/** * Use BufferedImage to get picture size * @return Map<string,integer> Returns the Map collection, containing the length and width * @param src * source picture path */Public map<string,i        nteger> getimagesizebybufferedimage (String src) {File file = new file (src);        FileInputStream is = null; Map<string,inteGer> map=new hashmap<string, integer> ();        try {is = new FileInputStream (file);        } catch (FileNotFoundException E2) {e2.printstacktrace ();        } bufferedimage sourceimg = null;            try {sourceimg = Javax.imageio.ImageIO.read (IS);            Map.put ("width", sourceimg.getwidth ());        Map.put ("Height", sourceimg.getheight ());        } catch (IOException E1) {e1.printstacktrace ();    } return map;    } public String Getsrcpath () {return srcpath;    } public void Setsrcpath (String srcpath) {this.srcpath = Srcpath; }}</span>

according to the above method, if the corresponding System.out.println () is added to the method, the result can be obtained:

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Accumulate Kuibu, Poly stream------Java get the dimensions of the picture