Servlet knowledge point summary (JSP), servlet knowledge point

Servlet knowledge point summary (JSP), servlet knowledge point

I,

Servlet is a class. servlet and JSP are available first. servlet is mainly used for logic processing before page Jump.

Method 1 for writing the first servlet manually. inherit from httpservlet 2 and override doget dopost method 3. register the servlet in web. xml.

You can simply create a new servlet!

II.

Generally, a hyperlink is a get transmission method.

3.

The following operations are performed during dopost/get processing of transmitted information:

// Prevent garbled characters

Response. setContentType ("text/css; charset = UTF-8 ");

Request. setCharacterEncoding ("UTF-8 ");

Response. setCharacterEncoding ("UTF-8 ");

// Obtain the data drama submitted on the JSP page. For example

String name = request. getParameter ("name ");

People p = new People ();

P. setName (name); // set for encapsulation

// Create add, delete, modify, and query objects, and add information to the database

Lelecrud pc = new Peoplecrud ();

Pc. add (p );

// Jump to the page

Response. sendRedirect ("sucessful. jsp ");