package a;
import java.io.*;
import java.net.*;
import java.util.Enumeration;
//import java.util.ServiceLoader;
import javax.servlet.*;
import javax.servlet.http.*;
import org.api.Executor;
import org.api.ExecutorFactory;
/**
*
*/
public class NewServlet extends HttpServlet {
/**
* Processes requests for both HTTP GET and POST methods.
* @param request servlet request
* @param response servlet response
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try {
out.println("");
out.println("");
out.println("Servlet NewServlet");
out.println("");
out.println("");
out.println("Servlet NewServlet at " + request.getContextPath () + "
");
out.println("");
out.println("");
} finally {
out.close();
}
}
//
/**
* Handles the HTTP GET method.
* @param request servlet request
* @param response servlet response
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Handles the HTTP POST method.
* @param request servlet request
* @param response servlet response
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Returns a short description of the servlet.
*/
public String getServletInfo() {
return "Short description";
}
@Override
public void init(ServletConfig arg) throws ServletException {
super.init(arg);
Enumeration urls = null;
try {
String prefix = "META-INF/services/";
String serviceName = ExecutorFactory.class.getName();
System.out.println("ServiceName=" + serviceName);
urls = getClass().getClassLoader().getResources(
prefix + serviceName);
} catch (IOException ioe) {
throw new ServletException(ioe);
}
if (urls == null) {
return;
}
while (urls.hasMoreElements()) {
URL url = urls.nextElement();
System.out.println("URL=" + url);
InputStream in = null;
BufferedReader r = null;
try {
in = url.openStream();
r = new BufferedReader(new InputStreamReader(
in, "utf-8"));
System.out.println("PROVIDER=" + r.readLine());
} catch (IOException ioe) {
throw new ServletException(ioe);
} finally {
if (in != null) {
try {
in.close();
} catch (IOException ioe) {
// do nothing
}
}
if (r != null) {
try {
r.close();
} catch (IOException ioe) {
// do nothing
}
}
}
}
/*
ServiceLoader factories =
ServiceLoader.load(ExecutorFactory.class);
System.out.println(getClass().getClassLoader());
System.out.println(Thread.currentThread().getContextClassLoader());
System.out.println(getClass().getClassLoader() == Thread.currentThread().getContextClassLoader());
for (ExecutorFactory f:factories) {
Executor e = f.getExecutor();
//System.out.println(e);
}
*/
}
}