图片裁剪保存到数据库中的方法

来源：互联网发布：电脑软件设计师编辑：程序博客网时间：2024/05/18 03:38

/**  * 裁剪图片的方法  *   * @param request  * @param response  * @return  * @author julong 2013-8-26 下午06:01:45  */ public ModelAndView cutImg(HttpServletRequest request,HttpServletResponse response){  //获取smid  String smid = request.getParameter("smid");  //获得x裁剪的位置  String x = request.getParameter("x");  //获得y裁剪的位置  String y = request.getParameter("y");  //获得width选中的大小  String w = request.getParameter("w");    //获得height选中的大小  String h = request.getParameter("h");  //获取原图片对象  PhotoTemp2 photoTemp2 = this.photoTemp2Service.getZp(smid);  //获取图片对象  byte[] imgBtye  = photoTemp2.getZp();  try {   //获取输出流   ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(imgBtye);   //将byte数组转换为image对象   BufferedImage bufferedImage=ImageIO.read(byteArrayInputStream);   //获得当前的图片的高度和宽度   int thisHeight = bufferedImage.getHeight();   int thisWidth = bufferedImage.getWidth();   //获得裁剪的图片的高度和宽度 x y为裁剪的其实位置 w h 为裁剪的图片大小   BufferedImage subImage =  bufferedImage.getSubimage(Integer.valueOf(x), Integer.valueOf(y), Integer.valueOf(w), Integer.valueOf(h));   //判断是否等于原图的大   if(subImage.getWidth()>=0 || subImage.getHeight()>=0){    //设置绘制的图片的大小    BufferedImage tempImg = new BufferedImage(Integer.valueOf(w),Integer.valueOf(h),BufferedImage.TYPE_INT_RGB);    //绘制图片    tempImg.getGraphics().drawImage(subImage.getScaledInstance(Integer.valueOf(w), Integer.valueOf(h), Image.SCALE_DEFAULT), 0, 0,null);
    //创建字节输入流    ByteArrayOutputStream byteArrayOutputStream =new ByteArrayOutputStream();    ImageIO.write(tempImg, "JPEG", byteArrayOutputStream);    //获取新图片的数组    byte[] newImg = byteArrayOutputStream.toByteArray();    photoTemp2.setZp(newImg);    //执行更新操作    ExcuteResult r =  this.photoTemp2Service.updateDrvPhotoTempZP(photoTemp2);    System.out.println(r);   }  } catch (IOException e1) {   // TODO Auto-generated catch block   e1.printStackTrace();  }  request.setAttribute("smid",smid);  return new ModelAndView("dagl/lsda_drv_cutImg"); }

jsp裁剪页面<%@ page language="java"  pageEncoding="gbk"%><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head>  <title>My JSP 'lsda_drv_cutImg.jsp' starting page</title>     <meta http-equiv="pragma" content="no-cache"/> <meta http-equiv="cache-control" content="no-cache"/> <meta http-equiv="expires" content="0"/>     <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"/> <meta http-equiv="description" content="This is my page"/> <link rel="stylesheet" href="jquery/jcrop/css/jquery.Jcrop.css" type="text/css" /> <script type="text/javascript" src="jquery/jquery-1.7.2.min.js"></script> <script type="text/javascript" src="jquery/jcrop/js/jquery.Jcrop.min.js"></script> <script type="text/javascript" src="jquery/jcrop/js/jquery.Jcrop.js"></script>    <script language="Javascript">
   // Remember to invoke within jQuery(window).load(...)   // If you don't, Jcrop may not initialize properly   jQuery(document).ready(function(){
    jQuery('#cropbox').Jcrop({     onChange: showCoords,     onSelect: showCoords    });      });
   // Our simple event handler, called from onChange and onSelect   // event handlers, as per the Jcrop invocation above   function showCoords(c)   {    jQuery('#x').val(c.x);    jQuery('#y').val(c.y);    jQuery('#x2').val(c.x2);    jQuery('#y2').val(c.y2);    jQuery('#w').val(c.w);    jQuery('#h').val(c.h);   };   //单击裁剪的事件   function cutButton(){    $("#cutImgForm").submit();   }      function getEventType(event) {       //opener 属性非常有用，创建的窗口可以引用创建它的窗口所定义的属性和函数      window.opener.cutImgPageClosed();      window.opener = null;     }     </script> <style type="text/css">  div,form,label{   padding:0px;margin:0px;  } </style> </head>
 <body onunload="getEventType(event)">  <div  style="padding:0px;text-align:center; "  >     <form  id="cutImgForm" action="drvphototemp.dagl?method=cutImg&smid=${smid }" method="post" >    <label>X1 <input type="text" size="4" id="x" name="x" /></label>    <label>Y1 <input type="text" size="4" id="y" name="y" /></label>    <label>X2 <input type="text" size="4" id="x2" name="x2" /></label>    <label>Y2 <input type="text" size="4" id="y2" name="y2" /></label>    <label>W <input type="text" size="4" id="w" name="w" /></label>    <label>H <input type="text" size="4" id="h" name="h" /></label>    <input type="button" name="" value="提交" onclick="cutButton()"></input>   </form>   <img src="drvphototemp.dagl?method=getZpList&smid=${smid}" id="cropbox" />  </div>      </body></html> 
我用的jcrop插件
 这个你在网上搜索一下就能出来很方便的东西  这是我做的项目中的代码 数据库中存储的是blob格式的16进制文件 亲测裁剪成功了 分享给大家 希望对你有所帮助

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