javascript – Jcrop没有正确裁剪图像

我的jcrop代码

$(function(){

// Create variables (in this scope) to hold the API and image size
var jcrop_api,boundx,boundy,// Grab some information about the preview pane
    $preview = $('#preview-pane'),$pcnt = $('#preview-pane .preview-container'),$pimg = $('#preview-pane .preview-container img'),xsize = $pcnt.width(),ysize = $pcnt.height();

//console.log('init',[xsize,ysize]);
$('#target').Jcrop({
  onChange: updateInfo,onSelect: updateInfo,onRelease: clearInfo,setSelect: [0,150,180],boxWidth: 400,boxHeight: 300,allowMove: true,allowResize: true,allowSelect: true,aspectRatio: xsize / ysize
},function(){
  // Use the API to get the real image size
  var bounds = this.getBounds();
  boundx = bounds[0];
  boundy = bounds[1];
  // Store the API in the jcrop_api variable
  jcrop_api = this;

  // Move the preview into the jcrop container for css positioning
  $preview.appendTo(jcrop_api.ui.holder);
});


   // update info by cropping (onChange and onSelect events handler)
function updateInfo(e) {
    if (parseInt(e.w) > 0) {
        var rx = xsize / e.w;
        var ry = ysize / e.h;

        $pimg.css({
            width : Math.round(rx * boundx) + 'px',height : Math.round(ry * boundy) + 'px',marginLeft : '-' + Math.round(rx * e.x) + 'px',marginTop : '-' + Math.round(ry * e.y) + 'px'
        });
    }
    $('#x1').val(e.x);
    $('#y1').val(e.y);
    $('#w').val(e.w);
    $('#h').val(e.h);
};

// clear info by cropping (onRelease event handler)
function clearInfo() {
    $('#w').val('');
    $('#h').val('');
};


   });

   Java controller which handles it

@RequestMapping(value = "/editProfileImage",method = RequestMethod.POST)
public @ResponseBody
FileMeta edit(MultipartHttpServletRequest request,@RequestParam(value = "x1") final int x1,@RequestParam(value = "y1") final int y1,@RequestParam(value = "w") final int w,@RequestParam(value = "h") final int h) throws Exception {
    Iterator<String> itr = fileIterator(request);
    MultipartFile mpf = null;
    final FileMeta fileMeta = new FileMeta();
    // 2. get each file
    while (itr.hasNext()) {
        mpf = getMultipartFile(request,itr);
        checkIfEmpty(mpf);
        checkifValidFormat(mpf);

        final BufferedImage subImage = getBufImage(mpf).getSubimage(x1,y1,w,h);

        //final BufferedImage resizedImage = resizeImage(subImage);
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        ImageIO.write(subImage,mpf.getContentType().replace("image/",""),baos);
        final Account account = accountManager.findBySigin((String) request
                .getAttribute("account"));
        profilePictureService.saveProfilePicture(account.getId(),baos.toByteArray());

        prepareMetaInformation(mpf,fileMeta,account,baos);
    }
    return fileMeta;
}

此代码适用于某些图像,但对大多数图像都不能正常工作.有没有人有任何线索.

例如,对于以下图像
它完美无缺,因为我完美地获得了裁剪后的图像.

但是对于这个图像
我没有正确获得裁剪的图像.

解决方法

我已经使用了下面的代码,它的工作对我来说..请通过下面的一个.

你的问题在这里：

setSelect: [0,

你传递的是不变的

jQuery(function ($) {

        // Create variables (in this scope) to hold the API and image size
        var jcrop_api,// Grab some information about the preview pane
            $preview = $('#preview-pane'),ysize = $pcnt.height();

        console.log('init',ysize]);
        $('#target').Jcrop({
            onChange: updatePreview,onSelect: updatePreview,onSelect: storeCoords,aspectRatio: xsize / ysize,boxWidth: 350,boxHeight: 350
        },function () {
            // Use the API to get the real image size
            var bounds = this.getBounds();
            boundx = bounds[0];
            boundy = bounds[1];
            // Store the API in the jcrop_api variable
            jcrop_api = this;

            // Move the preview into the jcrop container for css positioning
            $preview.appendTo(jcrop_api.ui.holder);
        });

        function updatePreview(c) {
            if (parseInt(c.w) > 0) {
                var rx = xsize / c.w;
                var ry = ysize / c.h;

                $pimg.css({
                    width: Math.round(rx * boundx) + 'px',height: Math.round(ry * boundy) + 'px',marginLeft: '-' + Math.round(rx * c.x) + 'px',marginTop: '-' + Math.round(ry * c.y) + 'px'
                });
            }
            // storeCoords(c);
        };
        function storeCoords(c) {

            jQuery('#X').val(c.x);
            jQuery('#Y').val(c.y);
            jQuery('#W').val(c.w);
            jQuery('#H').val(c.h);


        };

    });

请从您的代码中分离出此功能.

function storeCoords(c) {

        jQuery('#X').val(c.x);
        jQuery('#Y').val(c.y);
        jQuery('#W').val(c.w);
        jQuery('#H').val(c.h);


    };

并将调用storeCoords放在您之前设置的固定坐标处
如

setSelect:storeCoords,