16 How to Configure Multiple Servlet URL Patterns | Different MIME/content type | Adv Java Tutorial

Multiple Servlet URL Patterns: Adv Java Servlet programming Tutorial advance java tutorial : If multiple servlet programs are there in our web application then we must configure them in web.xml having url-pattern, by specifying appropriate MIME(content type) in res.setContentType(" ") method, we can make servlet program sending different format of webpages to browsers window.

Important MIME(Multipurpose internet Mail Extension ) types/Content types:
----------------------------------
MIME ---Multipurpose Internet Mail Extension

html----- text/html
plain text --- plain/text
MS Word ----- application/msword
MS Excel ---- application/vnd.ms-excel
xml-----text/xml

#Procedure to develope java web application having multiple servlet programs. Each Servlet program should generate a differnt format(MIME/content type) based web page.
============================================================================
Note : Gather MIME types of various file types.
(use regedit tool- whenever we install any software it will be registered in regedit)

start----run----regedit---HKEY_CLASSES_ROOT---choose extension --- choose file type/MIME type/content type

Step 1) Create Deployment directory structure.

E:\2MimeApp
|
|----WEB-INF
|
|------web.xml
|------classes
|
|------HtmlSrv.java
|------ExcelSrv.java
|------WordSrv.java
|------XmlSrv.java
|-------*.class(4)

Step 2) Develop the source code of servlet programs
HtmlSrv.java
------------
//HtmlSrv.java
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;

public class HtmlSrv
{
public void service(HttpServletRequest req, HttpServletResponse res)throws ServletException, IOException{

//get the PrintWriter object
PrintWriter pw=res.getWriter();
//set response content type
res.setContentType("text/html");
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