Use servlet to convert JSP file contents to HTML

Use servlet to convert JSP file contents to 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 invoked to process user requests only after successful initialization. The previous parameter provides methods and fields to access the initial request data.

* The latter provides a way for the servlet to construct the response.

*/

}

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 filename

String pname = "E:tomcat 5.5webappsjsptohtmlindex.htm"; Full path to generate HTML

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); Writes the contents of the JSP output to the HTM file in the specified path

Os.writeto (FOS);

Fos.close ();

Response.sendredirect (name); Turn to HTM page when finished 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>

Here is the index.jsp for testing:

<%@ page contenttype= "text/html charset=gb2312"%>< html> < head> < Title>cache Filter Test </title> < meta http-equiv= "Content-type" content= "text/html; charset=gb2312 ">