直接上代码
plupload.addFileFilter('min_width', function (maxwidth, file, cb) {
var self = this, img = new o.Image();
function finalize(result) {
// cleanup
img.destroy();
img = null;
// if rule has been violated in one way or another, trigger an error
if (!result) {
self.trigger('Error', {
code: plupload.IMAGE_DIMENSIONS_ERROR,
message: "图片宽度不能小于" + maxwidth + "px",
file: file
});
}
cb(result);
}
img.onload = function () {
// check if resolution cap is not exceeded
finalize(img.width >= maxwidth);
};
img.onerror = function () {
finalize(false);
};
img.load(file.getSource());
});
plupload.addFileFilter('filetype', function (filetype, file, cb) {
var self = this, img = new o.Image();
function finalize(result) {
// cleanup
img.destroy();
img = null;
// if rule has been violated in one way or another, trigger an error
if (!result) {
self.trigger('Error', {
code: plupload.IMAGE_DIMENSIONS_ERROR,
message: "您上传的图片格式是" + file.type + ",只能上传jpg图片",
file: file
});
}
cb(result);
}
img.onload = function () {
// check if resolution cap is not exceeded
var type = file.type;
type = type.replace("image/", "");
finalize(filetype.indexOf(type) > 0);
};
img.onerror = function () {
finalize(false);
};
img.load(file.getSource());
});
var uploader = new plupload.Uploader({//创建实例的构造方法
browse_button: 'fileinput-button',
runtimes: 'html5,flash,silverlight,html4', //上传插件初始化选用那种方式的优先级顺序
url: "/common/ImageUp", //远程上传地址
max_file_size: '20mb',
chunk_size: '500kb',
filters:
{ title: "Image files", filetype: "jpg,jpeg", min_width: 600 }
,
flash_swf_url: '/Scripts/plupload-2.1.9/Moxie.swf',
});
uploader.init();
参考文章：
http://stackoverflow.com/questions/14091505/control-image-width-and-height-when-upload-image
2.跨域
在iis7下web.config配置，实际配置时，指定具体的域名，防止被黑客入侵
<?xml version="1.0" encoding="utf-8"?> <configuration> <system.webServer> <httpProtocol> <customHeaders> <add name="Access-Control-Allow-Origin" value="*" /> </customHeaders> </httpProtocol> </system.webServer> </configuration>
3.php怎么跨域
在文件头部加上 header( 'Access-Control-Allow-Origin:http://abc.com' );
如果在iis下不要添加，如2配置即可
跨域可能用的路径
//获取当前的域名: echo $_SERVER['SERVER_NAME']; //获取来源网址,即点击来到本页的上页网址 echo $_SERVER["HTTP_REFERER"]; $_SERVER['REQUEST_URI'];//获取当前域名的后缀 $_SERVER['HTTP_HOST'];//获取当前域名 dirname(__FILE__);//获取当前文件的物理路径 dirname(__FILE__)."/../";//获取当前文件的上一级物理路径
