高像素清晰略图生成（java）.doc

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1、高像素清晰缩略图生成(java)在公司实习的时候还是练了不少代码的，觉得这个类算得上写的比较通用吧，其中也借鉴了别人的算法，贴出来大家共享共同进步。packagecom.modules.image;importcom.modules.basicObject;importjava.net.*;importjava.io.*;importjava.awt.image.*;importjava.awt.*;importcom.sun.image.codec.jpeg.*;importjavax.imageio.ImageIO;importjavax.imageio.st

2、ream.*;importcom.book.db.dbOperator;importjava.sql.ResultSet;importjava.util.*;importjavax.imageio.stream.*;importjavax.imageio.*;/** *

Title:ImageProcess

Copyright:Copyright(c)2006

3、ge=null;   privateBufferedImagebfd_image=null;   privateBufferedImagetag=null;   privateStringimageName="";   privateStringsourceFileURI="";   privateStringdesFileURI="";   privateStringimageType="jpeg";//defaultfformat   privateStringstr_uri=null;   publicimager(){   }   publicboolea

4、nsetImage(Stringm_id,Stringtype)   {       try{           str_uri=getAppPath()+"files/images/";           imageType=type;           imageName=m_id+"."+imageType;           str_uri+=imageName;           sourceFileURI=str_uri;           File_file=newFile(str_uri);     org_image=javax.im

5、ageio.ImageIO.read(_file);           returntrue;       }       catch(Exceptione)       {           this.AddError("setimage",e.getMessage()+"
"+imageName+"
"+str_uri+"
");           returnfalse;       }   }   //generateresizedimage,andputitunderimages/thumbdirectory   //add

6、recordintodatabase   //returnimageidifsuccessfully     publicStringresize(intwidth,intheight,Stringpos){       try       {           if(org_image!=null)           {               BufferedImagetemp=null;               desFileURI=getAppPath()+"files/images/thumb/"+"SM"+imageName.substri

7、ng(2);//destinationimageURI                              int_width=org_image.getWidth(null);               int_height=org_image.getHeight(null);                                             FileOutputStreamout=newFileOutputStream(desFileURI);                JPEGImageEncoderencoder=JPEG

8、Codec