织梦图集中，上传的图片像素宽高小于系统设置定的这个尺寸： 
较小的这些图片就会无法生成缩略图，导致图集在网页上缩略图显示X叉号，这应该是织梦DEDEcms的一个历史遗漏bug，可用下面方法修复。
/include/helpers/，这个文件中搜索，下面的代码：

if($srcW<=$toW && $srcH<=$toH ) return TRUE; 
        $toWH=$toW/$toH; 
        $srcWH=$srcW/$srcH; 
        if($toWH<=$srcWH) 
       { 
            $ftoW=$toW; 
            $ftoH=$ftoW*($srcH/$srcW); 
        } 
        else 
        { 
            $ftoH=$toH; 
            $ftoW=$ftoH*($srcW/$srcH); 
        } 
 
然后用下面的大片代码替换：

$ftoW=$toH; 
[size=; font-size: inherit,inherit]                $ftoH=$toH; 
        /// 
[size=; font-size: inherit,inherit]        if( $srcH<=$toH &&  $srcW<=$toW ) 
[size=; font-size: inherit,inherit]            { 
[size=; font-size: inherit,inherit]                $ftoW=$srcW; 
[size=; font-size: inherit,inherit]                $ftoH=$srcH; 
[size=; font-size: inherit,inherit]                if(function_exists("imagecreatetruecolor")) 
[size=; font-size: inherit,inherit]                { 
[size=; font-size: inherit,inherit]                    @$ni = imagecreatetruecolor($ftoW,$ftoH); 
[size=; font-size: inherit,inherit]                    if($ni) 
 
[size=; font-size: inherit,inherit]                    { 
 
[size=; font-size: inherit,inherit]                    imagecopyresampled($ni,$im,0,0,0,0,$ftoW,$ftoH,$srcW,$srcH); 
[size=; font-size: inherit,inherit]                    } 
[size=; font-size: inherit,inherit]                    else 
[size=; font-size: inherit,inherit]                    { 
[size=; font-size: inherit,inherit]                    $ni=imagecreate($ftoW,$ftoH); 
[size=; font-size: inherit,inherit]                    imagecopyresized($ni,$im,0,0,0,0,$ftoW,$ftoH,$srcW,$srcH); 
[size=; font-size: inherit,inherit]                    } 
[size=; font-size: inherit,inherit]                    } 
[size=; font-size: inherit,inherit]                else 
[size=; font-size: inherit,inherit]                { 
[size=; font-size: inherit,inherit]                    $ni=imagecreate($ftoW,$ftoH); 
[size=; font-size: inherit,inherit]                    imagecopyresized($ni,$im,0,0,0,0,$ftoW,$ftoH,$srcW,$srcH); 
[size=; font-size: inherit,inherit]                } 
[size=; font-size: inherit,inherit]                switch ($srcInfo[2]) 
[size=; font-size: inherit,inherit]                { 
[size=; font-size: inherit,inherit]                    case 1: 
[size=; font-size: inherit,inherit]                    imagegif($ni,$toFile); 
[size=; font-size: inherit,inherit]                    break; 
[size=; font-size: inherit,inherit]                    case 2: 
[size=; font-size: inherit,inherit]                    imagejpeg($ni,$toFile,100); 
[size=; font-size: inherit,inherit]                    break; 
[size=; font-size: inherit,inherit]                    case 3: 
[size=; font-size: inherit,inherit]                    imagepng($ni,$toFile); 
[size=; font-size: inherit,inherit]                    break; 
[size=; font-size: inherit,inherit]                    case 6: 
[size=; font-size: inherit,inherit]                    imagebmp($ni,$toFile); 
[size=; font-size: inherit,inherit]                    break; 
[size=; font-size: inherit,inherit]                    default: 
[size=; font-size: inherit,inherit]                    return false; 
[size=; font-size: inherit,inherit]                } 
[size=; font-size: inherit,inherit]                imagedestroy($ni); 
[size=; font-size: inherit,inherit]            } /// 
 
       $toWH=$toW/$toH; 
       $srcWH=$srcW/$srcH; 
       if($toWH<=$srcWH) 
       { 
            $ftoW=$toW; 
            $ftoH=$ftoW*($srcH/$srcW); 
        } 
        else 
 
        { 
 
            $ftoH=$toH; 
 
            $ftoW=$ftoH*($srcW/$srcH); 
 
       } 
这样织梦上传的图，就不会显示x号了。希望可以帮助到你。

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