Build a Web server on MyEclipse

A) What is a servlet?

Servlet (server-side applet) is a server-side program written in the Java language [O1], which can be used to generate dynamic Web pages using scripting languages.

b) The schema of the servlet?

1. Also the server schema is sprinkled.
2. The location of the servlet in the WEB application

c) The task of the servlet?

1. Read client (browser) data:
   1. an explicit [O2] Httl request data (HTML form on a Web page, or it can be a form from an applet or a custom HTTP client program)
   2. . implicit [O3] HTTP request data (cookies, media types, compression formats that the browser can understand, and so on)
2. Process data and generate results
3. Send data (that is, documents) to the client (browser)

d) MyEclipse tool operation Servlet

1. Create a Web server project,

2. Create a new package,

3. Create a new servlet file,

4. Change the path in Web. XML "This is very important!" "

5.run as (My Eclipse application)"NOTE: see if the project is deployed HA"

6. Look at the port number:

Info: Starting Coyote http/1.1 on http-8080

7. Access in the browser: 192.168.2.19 is host

Http://192.168.2.19:8080/MyWebSeverProject/MyServlet

What is printed in the browser: This is class Cn.com.fs.test01.MyServlet, using the GET method

"Note: The servlet file has not been changed again and requires a reboot"

8. Note Several statements in the servlet:

(1) public void doget (HttpServletRequest request, httpservletresponse response)

Throws Servletexception, IOException {

Parameters: Request: Contains client requests information response set the information returned by the service side

(2) Response.setcontenttype ("text/html");//Set the format of the returned content

(3) PrintWriter out = Response.getwriter (); The Printin method of the PrintWriter object can be interpreted as directly returning data

(4) Out.flush ();//Refresh--Transfer data all the time

(5) Out.close ();//close--data transfer complete, end

[O1]

1. Vip
2. Web Development

[O2] Look at the code to understand

[O3] such as compression format Zip,rar

Build a Web server on MyEclipse