First say IE9, click Upload, the browser will prompt to download content.cause : IE9 and the following upload file of the response header contenttype if it is JSON, the browser will think it is a file download.Processing Method : Find backstage GG, change contenttype to text/html.Then modify the Done method to get the addressfunction (E, data) { var result = data.result[0].body? data.result[0].body.innerhtml:data.result; = Json.parse (result); /* your own code. */ }Besides IE8, a
The console did not get an error when uploading the file test, but the uploaded file could not be found under the specified item in Eclipse workspacePrint out the uploaded project path only to find the original in this locationD:\code\JavaCode\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp1\wtpwebappsTo avoid the next occurrence of the same situation, double-click the point-to-open setting in the new server:Select the second item toJavaweb base----Cannot find the uploaded file loca
)Workaround:1 SPRINGMVC You need to configure the Multipartresolver processor when uploading files - 2 BeanID= "Multipartresolver"class= "Org.springframework.web.multipart.commons.CommonsMultipartResolver"> 3 Propertyname= "Defaultencoding"value= "UTF-8"/> 4 5 Specifies that the total size of the uploaded file cannot exceed 200KB. Note the limitations of the Maxuploadsize attribute are not for individual files, but for the sum of the capacity of all files - 6 P
Receive files in the Java Web are often implemented based on the FileUpload plug-in, with the following general code:Index.html
The corresponding background controller code:
@RequestMapping (value = "/test/file") @ResponseBody public String file (HttpServletRequest request,httpservlet
Response Response) throws ioexception{Response.setcontenttype ("Application/json;charset=utf-8"); try{///Use Apache File Upload component to process file u
Environment: The action for form in the client page is this servlet, introducing the package Commons-fileupload-1.2.jar
The servlet class Fileuploadservlet.java code used is as follows:
Import Java.io.File;Import java.io.IOException;Import Java.io.PrintWriter;Import Java.util.Iterator;Import java.util.List;Import javax.servlet.ServletException;Import Javax.servlet.http.HttpServlet;Import Javax.servlet.http.HttpServletRequest;Import Javax.servlet.http
With the help of the FileUpload control in vs2005, the paper uploads the picture file and generates the thumbnail.Implementation process: Choose the image upload success, get already existing server file generation thumbnail, and judge whether it is a picture type of file, this judgment can be modified in the program, this procedure just judged the "image/bmp", "Image/gif", "Image/pjpeg" three different types.The code is as follows:upfile.aspx file
U
With the help of the FileUpload control in vs2005, the paper uploads the picture file and generates the thumbnail.Implementation process: Choose the image upload success, get already existing server file generation thumbnail, and judge whether it is a picture type of file, this judgment can be modified in the program, this procedure just judged the "image/bmp", "Image/gif", "Image/pjpeg" three different types.The code is as follows:upfile.aspx fileUpf
Comparison
Web file upload is probably one of the most common functions of website construction, I need to implement the file upload function in the project development almost. Some time ago, I collected some upload components. This article will describe how these components are used and compare their pros and cons.
One, smartupload components.
I think as long as a file upload friends know this component, I know people who use the most is also it! When I first came to the company, the company
This is the 4th component of the Qfaces, Ajax way with the progress bar file upload component, I hope that every important component to upgrade a version, hehe! This version also fixes the Ajax compatibility problem under IE6. After introducing this component, you intend to introduce how to use qfaces from Define your own Ajax components, hopefully, this enhanced framework will help some people who like JSF. Later versions of the upgrade may not be so fast, or consider compatibility with facelet
"Problem" FileUpload after selecting a file, changes to the file can not be modified, upload has been occupied, until closed before releasing
"Resolve" two sites with the same code, but not the same as the display (pictured)
The above editor is convenient, files can be modified after the file is selected, upload will not always occupy the file
The following this is very fucked, the file can not be modified after the upload, after the file has bee
FileUpload in C # post-selection preview effect
Implementation method:Html:
Js:
Cases:
The above is the fileupload selected in C # after the preview effect of the specific implementation of content, more relevant content please pay attention to topic.alibabacloud.com (www.php.cn)!
;-----------------------------------------------------------------------------How do I restrict the type of selected files? (Lee Brainstorming Lxc)Front end FileUpload The type that is displayed when you select a file:"FileUpload1" runat="server" accept= " . Jpg,.png,.jpeg,.txt " />The user can choose "All Files" publicly to select other types of files, how to limit?JS Code:-----------------------------------------------------------------------------6
{ //Create a factory for disk-based file itemsDiskfileitemfactory factory =Newdiskfileitemfactory (); //Set Factory ConstraintsFactory.setsizethreshold (4096);//set the buffer size, this is 4KBFactory.setrepository (Temppathfile);//set the buffer directory//Create A new file upload handlerServletfileupload upload =Newservletfileupload (Factory); //Set Overall request size constraintUpload.setsizemax (4194304);//set maximum file size, this is 4MBList//get all the filesiteratorItems.ite
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