Use HttpURLConnection to request multipart/form-data form submission and httpurlconnection
Write a small program to simulate an Http POST request to obtain data from the website. Parse HTML with Jsoup (http://jsoup.org.
Jsoup encapsulates the HttpConnection function and can
1. What is Multipart/form-dataFirst we need to understand the Enctype property in HTML,Enctype: Specifies how form forms are encoded when sent to the server. He has the following three values.
①application/x-www-form-urlencoded. The default encoding method.However, the use of this encoding is inefficient in th
in order to avoid and normal text duplication, try to use a bit more complex content. Example:--------------------56423498738365
4, Multipart/form-data's request body is also a string, but unlike the POST request body is how it is constructed, post is a simple Name=value value connection, and multipart/
Why do I have to add a property to the form where I uploaded the file enctypeUpload files in the form of
①application/x-www-form-urlencoded (default value)
②multipart/form-data
③text/plain
Where ①application/x-www-
, the file will be uploaded to the server.The following is the data received by the server:Data received by the serverThis is a POST request. So the data is placed in the request body, not within the request header.This line indicates that the request is in the "Multipart/form-data
When learning Enctype attribute table:
value /th>
application/x-www-form-urlencoded
Encode all characters before sending (default)
multipart/form-data
text/plain
spaces are converted to "+" plus signs, but no s
Enctype = "multipart/form-Data" is used to upload images in a form.
ArticleSource: http://hi.baidu.com/greengain/blog/item/e9c02855f564e6c0b645ae17.html
Enctype = "multipart/form-Data
We all know that to allow the form to submit files, you must specify enctype = multipart/form-data attribute on the form to upload files. There are many articles about enctype, so we will not explain them any more.The problem is that the MVC Html. BeginForm () is used to out
We all know that to allow the form to submit files, you must specify enctype = multipart/form-data attribute on the form to upload files. There are many articles about enctype, so we will not explain them any more.
The problem is that the MVC Html. BeginForm () is used to
Description of applicationx/www-form-urlencoded and multipart/form-data, urlencodedformentity
In the Form Element syntax, EncType indicates the encoding type used by the browser when the data is sent back to the server using the
We know that it is best to specify the application/x-www-form-urlencoded encoding type by setting the request header when sending AJAX requests to the server via post. You must specify that the encoding type is "Multipart/form-data" when uploading a file through a form. And
The differences between applicationx-www-form-urlencoded and multipartform-data are analyzed. In the Form element syntax, EncType indicates the encoding type used by the browser when the data is sent back to the server using the Enctype attribute. Below is the description: applicatio in the
This day, I wrote a jsppage table to submit the excel.xls document. At the same time, there are some HTML field variables on the page. We found that the form encoding is set to enctype = "multipart/form-data"
Request. getparameter ("? "); The value of the page field cannot be obtained. Later, we found that enctype ="
We know that it is best to set the request header to specify the applicationx-www-form-urlencoded encoding type when sending an AJAX request to the server through POST. You must specify the encoding type as quot; multipartform-data quot; when uploading files through a form ;. In the Form element syntax, EncType indic
Reproduced from: http://www.jb51.net/article/51377.htm
In the syntax of a FORM element, enctype indicates the format of the submitted data
Use the Enctype property to specify the type of encoding used by the browser when the data is sent back to the server.
Below is the description:
application/x-www-form-urlenco
In the syntax of a FORM element, enctype indicates the format of the submitted data
Use the Enctype property to specify the type of encoding used by the browser when the data is sent back to the server.
Below is the description:
application/x-www-form-urlencoded: Form
In the form Element syntax, enctype indicates the encoding type used by the browser when the data is sent back to the server using the enctype attribute. Application/X-WWW-form-urlencoded: the form data is encoded as a name/value pair. This is the standard encoding format.
In the syntax of the form element, enctype indicates the format of the submitted dataUse the Enctype property to specify the type of encoding the browser uses when sending data back to the server.Below is the description:application/x-www-form-urlencoded: The form data is en
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.