导读：uploadify上传预览+缩略图+水印实例首先感谢各位大神网友的分享，我只是改改代码，让其更符合自己的业务逻辑图片上传+缩略图+水印处理代码...
uploadify上传预览+缩略图+水印实例
首先感谢各位大神网友的分享，我只是改改代码，让其更符合自己的业务逻辑
图片上传+缩略图+水印处理代码：
//文件上传
Public function _upload( $thumb = false , $thumbWidth = '' , $thumbHeight = '') {
$upload = new \Think\Upload();// 实例化上传类
$upload->maxSize = 3145728 ;// 设置附件上传大小
$upload->exts = array('jpg', 'gif', 'png', 'jpeg');// 设置附件上传类型
$upload->savePath = '/' . CONTROLLER_NAME .'/'; // 设置附件上传目录
$info = $upload->upload();
if(!$info) {
return array('status' =>0, 'info'=> $upload->getError() );
}else{
if( $thumb ) { //生成缩略图
$image = new \Think\Image();
foreach($info as $file) {
$thumb_file = './Uploads/' . $file['savepath'] . $file['savename'];
$save_path = './Uploads/' .$file['savepath'] . 'mini_' . $file['savename'];
$image->open( $thumb_file )->text('德兴房产','./data/1.otf',30,'#A7AAA4',\Think\Image::IMAGE_WATER_SOUTHWEST)->save( $thumb_file );
$image->open( $thumb_file )->text('德兴房产','./data/1.otf',24,'#A7AAA4',\Think\Image::IMAGE_WATER_SOUTHWEST)->thumb( $thumbWidth, $thumbHeight )->save( $save_path );
return array(
'status' => 1,
'savepath' => $file['savepath'],
'savename' => $file['savename'],
'pic_path' => $file['savepath'] . $file['savename'],
'mini_pic' => $file['savepath'] . 'mini_' .$file['savename']
);
}
}else{
foreach($info as $file) {
return array(
'status' => 1,
'savepath' => $file['savepath'],
'savename' => $file['savename'],
'pic_path' => $file['savepath'].$file['savename']
);
}
}
}
}
前端主要代码（参考http://www.bcty365.com/content-83-1023-1.html）：
<div class="tab-pane" id="tab3">
<div class="row">
<div class="col-md-12">
<div class="tab-pane">
<div class="form-group">
<input type="file" id="upload" class="form-control input-medium" />
</div>
<div style="width:100%; float:left;padding:10px 20px 20px; background-color:#ccc">
<p>
<ul class="imagelist" id="image_result"></ul>
</p>
</div>
</div>
</div>
</div>
</div> <!-- END #TAB3 -->
<div class="margin-top-10">
<button type="submit" class="btn green ajax-post">确 认</button>
<a href="javascript：" onclick="javascript：history.back(-1);return false;" class="btn default">返 回</a>
</div>
</div>
</div>
</form>
</div>
</div>
</block>
<block name="foot">
<link href="__PUBLIC__/assets/plugins/uploadify/uploadify.css" rel="stylesheet" type="text/css"/>
<link href="__PUBLIC__/assets/plugins/uniform/css/uniform.default.css" rel="stylesheet" type="text/css"/>
<script src="__PUBLIC__/assets/plugins/uniform/jquery.uniform.min.js" type="text/javascript" ></script>
<script src="__PUBLIC__/assets/plugins/uploadify/jquery.uploadify.min.js" type="text/javascript" ></script>
<script type="text/javascript">
$(function(){
var sid = "{:session_id()}";
$('#upload').uploadify({
'swf':'__PUBLIC__/assets/plugins/uploadify/uploadify.swf',
'buttonText': '选择图片',
'formData': { 'session_id':sid},
'uploader': "{:U('uploadPic')}",
'fileTypeDesc':'Image File',
'fileTypeExts':'*.jpg; *.jpeg; *.gif; *.png',
'auto' : true,
'removeCompleted': false,
onUploadSuccess: function(file, data, response) {
$('#progress').hide();
var result = $.parseJSON(data);
//错误处理。。。
if(result.status == 0){
alert(result.info);
return false;
}
//上传成功
var id = Math.random().toString();
id = id.replace('.','_'); //生成唯一标示
var html = '<li class="imageitem" id="'+id+'">';
html+= '<input type="hidden" name="file[]" value="'+result.pic_path+'">'; //隐藏域，是为了把图片地址入库。。
html+= '<input type="hidden" name="minifile[]" value="'+result.mini_pic+'">'; //隐藏域，是为了把图片地址入库。。
html+= '<img height="160" width="160" src="__ROOT__/Uploads/'+result.pic_path+'" />';
html+= '<span class="txt">';
html+= '<a title="删除" href=javascript：remove("'+result.pic_path+'","'+id+'");><img src="__PUBLIC__/assets/plugins/uploadify/remove.png" /></a>';
html+= '<a title="设为封面" href=javascript：tocover("'+result.pic_path+'");><img src="__PUBLIC__/assets/plugins/uploadify/right.png" /></a>';
html+= '</span>';
html+= '<em><input class="form-control" value="'+file.name+'"></em>';
html+= '</li>';
$('#image_result').append(html);
},
onUploadStart: function(){
$('#progress').text('正在上传...'); //用户等待提示。
},
onInit: function (){
$("#upload-queue").hide(); //隐藏上传队列
}
});
});
function remove(file,id){
alert('删除成功！'+"\r\n"+file);
$('#'+id).remove();
}
function tocover(file){
alert('设为封面成功'+"\r\n"+file);
}
function check(){
if($('input[name="title"]').val()==""){
toastr['error']('标题不能为空！');
return false;
}
}
</script>
</block>
