#上传头像功能#

Crop.java

//jar:ImageUtil.jar filters-2.0.235.jar
//jquert.jcrop.js  jcrop.css
      <img alt="" src="http://www.wdfx100.com/upload/${fileName }">
    	  <form action="jcrop" method="post">
  		  	<input type="hidden" name="fileName" value="${fileName}">
  		  	<input type="hidden" name="x1" id="x">
  		  	<input type="hidden" name="y1" id="y">
  		  	<input type="hidden" name="x2" id="x2">
  		  	<input type="hidden" name="y2" id="y2">
  		  	<input type="submit" value="剪裁"/>
  		  </form>
        $(function(){
            	$("img").Jcrop({
			onChange: showCoords,
			onSelect: showCoords
		});
  		function showCoords(c)
		{
			$('#x').val(c.x);
			$('#y').val(c.y);
			$('#x2').val(c.x2);
			$('#y2').val(c.y2);
		}
  	});
    String fileName = request.getParameter("fileName");
        int x1 = Integer.parseInt(request.getParameter("x1"));
	int y1 = Integer.parseInt(request.getParameter("y1"));
	int x2 = Integer.parseInt(request.getParameter("x2"));
	int y2 = Integer.parseInt(request.getParameter("y2"));
	
	
	File file = new File(getServletContext().getRealPath("/")+"upload",fileName);
	Image img = ImageLoader.fromFile(file);
	img.crop(x1, y1, x2, y2).writeToFile(file);