Jmagick class instance _java to realize basic image processing

The example of this article describes the class of Jmagick to implement basic image processing. Share to everyone for your reference. The specific analysis is as follows:

Jmagick is an open source API that uses JNI (Java Native Interface) technology to implement the Java Access interface to the ImageMagick API, so it will be faster than a pure Java-implemented picture manipulation function.

/** * Jmagickhandler.java * * Author:winter Lau * 2007-7-11/package com.eportal.img;
Import java.awt.Dimension;
Import Java.io.File;
Import Org.apache.commons.io.FileUtils;
Import Com.gif4j.GifDecoder;
Import Com.gif4j.GifEncoder;
Import Com.gif4j.GifImage;
Import Com.gif4j.GifTransformer;
Import Dlog.common.util.StringUtils; Import Magick.
Imageinfo; Import Magick.
Magickexception; Import Magick.
Magickimage;
  /** * Use Jmagick for image processing * * Class Jmagickhandler {private final static int default_quality = 90; Protected Jmagickhandler () {} private final static threadlocal<mymagickimage> tlocal = new Threadlocal<mymagick
  Image> ();
  Private String lastsrc = null; /** * Purge Thread local Storage information * * Private synchronized mymagickimage getmagickimage (String src) throws Exception {Mymagicki
    Mage mi = Tlocal.get ();
    if (MI!= null && stringutils.equals (SRC, lastsrc)) return mi;
    else if (mi!= null) tlocal.remove ();
    THIS.LASTSRC = src; ImageInFO info = new Imageinfo (SRC);
    mi = new Mymagickimage (info);
    Tlocal.set (MI);
  return mi;
    @Override public void Cleanup () {Mymagickimage mi = tlocal.get ();
    if (MI!= null) mi.destroyimages ();
  Tlocal.remove (); @Override public imageextinfo getimageinfo (String src) throws Exception {try{magickimage image = This.ge
      Tmagickimage (SRC);
      Imageextinfo ext = new Imageextinfo ();
      Dimension Dim = Image.getdimension ();
      Ext.setwidth ((int) dim.getwidth ());
      Ext.setheight ((int) dim.getheight ());
      Ext.setsize (Image.sizeblob ());
      Ext.setanimated (Image.isanimatedimage ());
    return ext;
    }catch (Magickexception e) {return new Purejavahandler (). Getimageinfo (SRC);
  } private Final Static Boolean Hasunicode (String str) {return str.getbytes (). Length!= str.length (); @Override public void Resize (string src, string dest, int width, int height, int quality) throws Exception {Boo Lean U_SRC =Hasunicode (SRC);
    Mymagickimage image;
    File srctmp = null;
      if (u_src) {srctmp = File.createtempfile ("Jmagick_s_" + src.hashcode (), NULL);
      Fileutils.copyfile (New File (SRC), srctmp);
    Image = This.getmagickimage (Srctmp.getabsolutepath ());
    else image = This.getmagickimage (src);
    Image.getimageinfo (). Setquality (quality>0) (quality:default_quality);
    Magickimage scaledimage = null;
        try{if (Image.isanimatedimage ()) {Gifimage gifimage = Gifdecoder.decode (new File (SRC));        
        Gifimage newgif = Giftransformer.resize (gifimage, width, height, false);
      Gifencoder.encode (Newgif, New File (dest));
        } else{//others scaledimage = image.scaleimage (width, height);
        Scaledimage.setimageformat ("JPEG");
        Scaledimage.profileimage ("*", NULL);
        Boolean u_dest = Hasunicode (dest);
       if (u_dest) {File tmp = File.createtempfile ("Jmagick_d_" + dest.hashcode (), NULL);   Scaledimage.setfilename (Tmp.getabsolutepath ());
          Scaledimage.writeimage (Image.getimageinfo ());
          Fileutils.copyfile (TMP, New File (dest));
        Fileutils.forcedelete (TMP); 
          } else{Scaledimage.setfilename (dest);
        Scaledimage.writeimage (Image.getimageinfo ());
      }}finally{if (srctmp!= null) fileutils.forcedelete (SRCTMP);      
    if (scaledimage!= null) scaledimage.destroyimages (); @Override public void Rotate (string src, string dest, double degrees) throws Exception {Boolean u_src = has
    Unicode (SRC);
    Mymagickimage image;
    File srctmp = null;
      if (u_src) {srctmp = File.createtempfile ("Jmagick_s_" + src.hashcode (), NULL);
      Fileutils.copyfile (New File (SRC), srctmp);
    Image = This.getmagickimage (Srctmp.getabsolutepath ());
    else image = This.getmagickimage (src);
     try{magickimage rotateimg = image.rotateimage (degrees); Rotateimg.profileimage ("*", NULL);
      Boolean u_dest = Hasunicode (dest);
        if (u_dest) {File tmp = File.createtempfile ("Jmagick_d_" + dest.hashcode (), NULL); Rotateimg.setfilename (Tmp.getabsolutepath ());
        Convert to PNG rotateimg.writeimage (Image.getimageinfo ());
        Rotateimg.destroyimages ();
        Fileutils.copyfile (TMP, New File (dest));
      Fileutils.forcedelete (TMP);
        } else{Rotateimg.setfilename (dest);//Convert to PNG rotateimg.writeimage (Image.getimageinfo ());       
      Rotateimg.destroyimages ();
    }}finally{if (srctmp!= null) fileutils.forcedelete (SRCTMP);
    } private static Class Mymagickimage extends Magickimage {private Imageinfo imageinfo;
    Public Imageinfo Getimageinfo () {return imageinfo;
      } public Mymagickimage (Imageinfo info) throws magickexception{super (info);
    This.imageinfo = info; }} @Override public void CropimaGE (String src, int width, int height, int point, int point2, String DST) throws Exception {//TODO Auto-generat

 Ed method Stub}}

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