Convert jsp file content to html using servlet

Use servlet to convert jsp file content into html. The Code is as follows:

Package examples;

Import java. io. ByteArrayOutputStream;

Import java. io. FileOutputStream;

Import java. io. IOException;

Import java. io. OutputStreamWriter;

Import java. io. PrintWriter;

Import javax. servlet. RequestDispatcher;

Import javax. servlet. ServletContext;

Import javax. servlet. ServletException;

Import javax. servlet. ServletOutputStream;

Import javax. servlet. http. HttpServlet;

Import javax. servlet. http. HttpServletRequest;

Import javax. servlet. http. HttpServletResponse;

Import javax. servlet. http. HttpServletResponseWrapper;

Public class ToHtml extends HttpServlet {

Private static final String CONTENT_TYPE = "text/html; charset = GBK ";

// Initialize global variables

Public void init () throws ServletException {

}

// Process the HTTP Get request

Public void doGet (HttpServletRequest request, HttpServletResponse response)

Throws ServletException, IOException {

Response. setContentType (CONTENT_TYPE );

Service (request, response );

/**

* This method can be called to process user requests only after successful initialization. The previous parameter provides methods and fields for accessing the initial request data,

* The next method provides servlet response construction.

*/

}

// Process the HTTP Post request

Public void doPost (HttpServletRequest request, HttpServletResponse response)

Throws ServletException, IOException {

DoGet (request, response );

}

Public void destroy (){

}

Public void service (HttpServletRequest request, HttpServletResponse response)

Throws ServletException, IOException {

ServletContext SC = getServletContext ();

String url = "/index. jsp ";

String name = "index.htm"; // This is the generated html file name.

String pName = "e: \ Tomcat 5.5 \ webapps \ jspTohtml \ index.htm"; // generate the complete html path

RequestDispatcher rd = SC. getRequestDispatcher (url );

Final ByteArrayOutputStream OS = new ByteArrayOutputStream ();

Final ServletOutputStream stream = new ServletOutputStream (){

Public void write (byte [] data, int offset, int length ){

OS. write (data, offset, length );

}

Public void write (int B) throws IOException {

OS. write (B );

}

};

Final PrintWriter pw = new PrintWriter (new OutputStreamWriter (OS ));

HttpServletResponse rep = new HttpServletResponseWrapper (response ){

Public ServletOutputStream getOutputStream (){

Return stream;

}

Public PrintWriter getWriter (){

Return pw;

}

};

Rd. include (request, rep );

Pw. flush ();

FileOutputStream fos = new FileOutputStream (pName); // write the jsp output content to the htm file in the specified path

OS. writeTo (fos );

Fos. close ();

Response. sendRedirect (name); // go to the htm page after writing

}

}

Configure in the web. xml file:

<Servlet> <servlet-name> Tohtml </servlet-name> <servlet-class> examples. toHtml </servlet-class> </servlet> <servlet-mapping> <servlet-name> Tohtml </servlet-name> <url-pattern>/Tohtml </url-pattern> </servlet-mapping>

The index. jsp used for testing is as follows:

<% @ Page contentType = "text/html; charset = gb2312 "%>