Java Picture processing thumbnails framework

To set the zoom ratio of the picture or the quality of the picture

First step: Importing MAVEN's jar package

<dependency>    <groupId>net.coobird</groupId>    <artifactid>thumbnailator</ Artifactid>    <version>0.4.8</version></dependency>

Step two: Get a Builder<file> object

 Public Static Builder<file> of (String ... files) {    "cannot specify NULL for input files." );    " Cannot specify an empty array for input files. " );     return builder.ofstrings (arrays.aslist (Files));} ......

Step three: Set the picture scale

• Scale by builder<file> object (double scale) method
• Size by builder<file> object (int width, int height) method
• By builder<file> object's height (int height) or width (int width) method

Fourth step: Set picture quality ratio

Outputquality (double quality) through the Builder<file> object

Second, get the information of the picture

First step: Get the BufferedImage object by Thumbnails.builder<file> 's Asbufferedimage () method and load the photos into memory

Step Two:

Gets the height of the picture by getheight (null) of the BufferedImage object

Get the width of a picture by getwidth (null) of the BufferedImage object

Small example:

     Public Static BooleanThumbnailscompresspic (String inputfile, String outputFile,intSizefloatquality) {File input=NewFile (inputfile); Try{Thumbnails.builder<File> Filebuilder = thumbnails.of (input). Scale (1.0). Outputquality (1.0); BufferedImage src=Filebuilder.asbufferedimage (); if(Src.getheight (NULL) > Size | | Src.getwidth (NULL) >size) {Thumbnails.builder<File> Builder =thumbnails.of (input); Builder.size (size, size); //take the largest size into size, and then zoombuilder.outputquality (Quality). ToFile (OutputFile); } Else{thumbnails.of (input). Scale (1.0). Outputquality (Quality). ToFile (OutputFile); }            return true; } Catch(IOException e) {logger.error (E.getmessage (), E); }        return false; }

Java Picture processing thumbnails framework