JSP nine large built-in objects

---------------------------------------------------------Get Post

Two ways to submit a form: Get, Post

1.get: Submit data in clear text through a URL, and the data can be seen in the URL.

The amount of data submitted does not exceed 2KB.

The security is lower but the efficiency is higher than the post method.

Suitable for data with small data volume and low security. For example: Search, Query and other functions.

2. Post: Encapsulates user-submitted information within the HTML header. It is suitable for submitting user information with large amount of data and high security. For example: registration, modification, upload and other functions.

-----------------------------------------------------------nine large built-in objects:

Out,request,response,application,

Page,pagecontext,exception,config

Note: void clear () can no longer be called after void Flush ();

JSP nine large built-in objects