How the servlet generates static HTML

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* * Package servlets;
Import Java.io.ByteArrayOutputStream;
Import Java.io.File;
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;  /** * * @author Administrator/public class Tohtmlpath extends HttpServlet {/** * processes for
　　　 Both HTTP <code>GET</code> and <code>POST</code> methods. * @param request servlet Request * @param response servlet response */protected void ProcessRequest (HTTPSERVL Etrequest request, HttpServletResponse response) throws Servletexception, IOException {} @Override public V 
　　　　　　　　　　　 OID Service (HttpServletRequest request, httpservletresponse response) throws Servletexception, IOException {
　　　　　　　　　　　 Response.setcontenttype ("Text/html;charset=utf-8");
　　　　　　　　　　　 PrintWriter out = Response.getwriter ();
　　　　　　　　　　　 String url = ""; 
　　　　　　　　　　　 String name = ""; 
　　　　　　　　　　　 ServletContext ServletContext = Getservletcontext ();
　　　　　　　　　　　 Final String Context_path=servletcontext.getrealpath ("/"); 
　　　　　　　　　　　 String file_name = Request.getparameter ("file_name");//The JSP file you want to access, such as NEWS.JSF.　 File_name=file_name+ ". JSP";
　　　　　　　　　　　 Only the JSP page generation is currently set up.

file_name such as: filedetail.jsf?fileid=56. If there is a parameter, there is only one argument. 
　　　　　　　　　　　 and takes the name of the parameter as the file name. String build_name = Request.getparameter ("Build_name");//file name to save. such as index;
　　　　　　　　　　　 Can not have this parameter. String Path = request.getparameter ("path"); The path to the JSP file you want to access. such as news. 
　　　　　　　　　　　 Can not have this parameter. String Real_path = ReQuest.getparameter ("Real_path");//You want to save the path of the file, such as html-news. Note that you can not have this parameter. 
　　　　　　　　　　　　 if (Build_name==null | | build_name.equals ("")) {int a = 0; 
　　　　　　　　　　　　 A = File_name.indexof ("=") + 1; 
　　　　　　　　　　　　 Build_name = File_name.substring (a); if (Build_name.indexof (".") 
　　　　　　　　　　　　 >0) {build_name = file_name.substring (0, File_name.indexof (".")); 
　　　　　　　　　　　 The page to be accessed is constructed under//. 
　　　　　　　　　　　　 if (Path ==null | | path.equals ("")) {URL = "/" + file_name;//This is the JSP file you want to generate HTML for, such as} else { url = "/" + path + file.separator + file_name;//This is the JSP file you want to generate HTML for, such as}//below constructs the file name to be saved, and the path 
　　　　　　　　　　　 。
　　　　　　　　　　　 1, if there are Real_path, then save under Real_path. 
　　　　　　　　　　　 2, if a path is saved under path. 
　　　　　　　　　　　 3, otherwise, save in the root directory. if (Real_path = null | | real_path.equals ("")) {if (path = = NULL | | Path.equals ("")) {name =context_path + file.separator + build_name + ". html"//This is the generated HTML filename, such as index.htm. Description: Confconstants.context_path for your context path. else {Name =context_path + file.separator + PATH + file.separator + build_name +. html 
　　　　　　　　　　　　 ;//This is the generated HTML filename, such as index.htm. } else {Name =context_path + file.separator + real_path +file.separator + Bui 
　　　　　　　　　　　 Ld_name + ". html";//This is the generated HTML filename, such as index.htm. 
　　　　　　　　　　　 //access the requested page and generate the specified file. RequestDispatcher dispatcher = servletcontext.getrequestdispatcher (URL);
　　　　　　　　　　　 For this URL request final Bytearrayoutputstream Byteos = new Bytearrayoutputstream (); Final Servletoutputstream stream = new Servletoutputstream () {//only handles byte streams, while PrintWriter is the process character stream, and @Override// Rewrite the inside of the method public void write (byte[] data, int offset, int length) {byteos.write (data, offset, l
　　　　　　　　　　　　 Ength); @Override//Rewrite the inside method public void write (int b) tHrows IOException {byteos.write (b);
　　　　　　　　　　　 } 　　　　　　　　　　　 };
　　　　　　　　　　　 Final PrintWriter printw; printw= New PrintWriter (New OutputStreamWriter (Byteos, "UTF-8"));
 
　　　　　　　　　　　 For encoding conversion, the setting is valid when the output stream is converted from a bit stream to a character streams. HttpServletResponse rep = new Httpservletresponsewrapper (response) {@Override public Servletou 
　　　　　　　　　　　　 Tputstream Getoutputstream () {return stream;
　　　　　　　　　　　　 @Override public PrintWriter getwriter () {return printw; 
　　　　　　　　　 
　　　　　　　　　　　 } 　　　　　　　　　　　 }; 
　　　　　　　　　　　 Dispatcher.include (Request, Rep);
　　　　　　　　　　　 Printw.flush (); FileOutputStream Fileos = new FileOutputStream (name);
　　　　　　　　　　　 Write the contents of the JSP output to xxx.htm//out.print (name);
　　　　　　　　　　　 Byteos.writeto (Fileos);
　　　　　　　　　　　 Fileos.close ();
　　　　　　　　　　 Out.print ("Publish success!"); }//<editor-fold defaultstate= "collapsed" desc= HttpServlet method. Click the + sign on the left to edit the code. 
">/**　　　 * Handles the HTTP <code>GET</code> method. * @param request servlet Request * @param response servlet response */@Override protected void doget (Http ServletRequest request, HttpServletResponse response) throws Servletexception, IOException {ProcessRequest (re
　　　 Quest, Response);
　　　 }/** * Handles HTTP <code>POST</code> method. * @param request servlet Request * @param response servlet response */@Override protected void DoPost (HTT Pservletrequest request, HttpServletResponse response) throws Servletexception, IOException {ProcessRequest (r
　　　 Equest, response);
　　　 }/** * Returns A short description of the servlet.
　　　 * * @Override public String Getservletinfo () {return ' short description '; }//</editor-fold>}