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Servlet Buffer application instance

Source: Internet
Author: User
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The Servlet Buffer buffer application has a large number of editing cache technologies in the current programming language. Of course, java buffer is also a type. Let's take a look at the two servlet Buffer methods.

Import java. io .*;
Import javax. servlet .*;
Import javax. servlet. http .*;
Import java.net .*;

Public class MyServlet extends HttpServlet {

Public void doGet (HttpServletRequest req, HttpServletResponse res)
Throws ServletException, IOException {
Res. setBufferSize (8*1024); // 8 K buffer
Res. setContentType ("text/html ");
PrintWriter out = res. getWriter ();

Int size = res. getBufferSize (); // returns 8096 or greater

// Record the default size, in the log
Log ("The default buffer size is" + size );

Out. println ("The client won't see this ");
Res. reset ();
Out. println ("And this won't be seen if sendError () is called ");
If (req. getParameter ("important_parameter") = null ){
Res. sendError (res. SC _BAD_REQUEST, "important_parameter needed ");
}
}
}
 
<? Xml version = "1.0" encoding = "ISO-8859-1"?>

<! DOCTYPE web-app
PUBLIC "-// Sun Microsystems, Inc. // DTD Web Application 2.2 // EN"
Http://java.sun.com/j2ee/dtds/web-app_2_2.dtd>

<Web-app>
<Servlet> <servlet-name> MyServletName </servlet-name>
<Servlet-class> MyServlet </servlet-class>


</Servlet>

<Servlet-mapping> <servlet-name> MyServletName </servlet-name>
<Url-pattern>/index.html </url-pattern>
</Servlet-mapping>
</Web-app>


 

Instance 2

Import java. io .*;
Import javax. servlet .*;
Import javax. servlet. http .*;
Import java. util .*;

Public class MyServlet extends HttpServlet {
Public void doGet (HttpServletRequest req, HttpServletResponse res)
Throws ServletException, IOException {

Res. setContentType ("text/html ");

// Ask for a 16 K byte response buffer; do not set the content length
Res. setBufferSize (16*1024 );

PrintWriter out = res. getWriter ();
Out. println ("<HTML> ");
Out. println ("<HEAD> <TITLE> Hello World </TITLE> </HEAD> ");
Out. println ("<BODY> ");
Out. println ("<BIG> Less than 16 K of response body </BIG> ");
Out. println ("</BODY> </HTML> ");
}
}
 
<? Xml version = "1.0" encoding = "ISO-8859-1"?>

<! DOCTYPE web-app
PUBLIC "-// Sun Microsystems, Inc. // DTD Web Application 2.2 // EN"
Http://java.sun.com/j2ee/dtds/web-app_2_2.dtd>

<Web-app>
<Servlet> <servlet-name> MyServletName </servlet-name>
<Servlet-class> MyServlet </servlet-class>


</Servlet>

<Servlet-mapping> <servlet-name> MyServletName </servlet-name>
<Url-pattern>/index.html </url-pattern>
</Servlet-mapping>
</Web-app>


 

 

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