We Keep Coding

Package doesnt exist error when trying to import my own package to servlet

im trying to import my own packages to a servlet im making, using tomcat.
The two java files im working with are the servlet (movieServlet.java), and another class im trying to import from a package (Movie.java)
The hierarchy of folders is:
classes
|
+--movieServlet.java
|
+--movie
|
+--Movie.java
movieServlet.java
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.annotation.WebServlet;
import movie.Movie;
#WebServlet(urlPatterns = {"/movieServlet"})
public class movieServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
PrintWriter out = response.getWriter();
Movie Movie = new Movie();
request.setAttribute("movies", Movie.getAllMovies());
RequestDispatcher dispatcher = getServletContext().getRequestDispatcher("/WEB-INF/jsps/movies.jsp");
dispatcher.forward(request,response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
PrintWriter out = response.getWriter();
RequestDispatcher dispatcher = getServletContext().getRequestDispatcher("/WEB-INF/jsps/movieDetails.jsp");
dispatcher.forward(request,response);
}
}
and this is the top of Movie.java (its a long file)
package movie;
import java.util.*;
import java.util.List;
import javax.sql.*;
import java.sql.*;
import javax.naming.InitialContext;
public class Movie implements java.io.Serializable
{
private static DataSource dataSource = null;
private static Connection c = null;
private int id;
private String title;
private String url;
private int year;
public Movie(){}
if theres more info needed please ask :), this has been reallllly bugging me.

I am new here so excuse me if my answer is not perfect. As you have mentioned that you want to import your own package which contains Movie class. I tried to implement all your main methods and it's running perfect and I am getting my value from Movie.java.
movieServlet.java
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import movie.Movie;
public class movieServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
PrintWriter out = response.getWriter();
Movie Movie = new Movie();
request.setAttribute("movies", Movie.getAllMovies());
out.println(request.getAttribute("movies"));
}
}
Movie.java
package movie;
public class Movie {
String s;
public Movie(){
s="hello zDoctor";
}
public String getAllMovies(){
return s;
}
}
servlet output
file structure

How to set response header for digital asset in AEM CQ6.1?

I have a request that if a user directly accesses a .pdf asset(for example, http://localhost:4505/content/dam/company/us/en/962059.pdf) from AEM CQ 6.1, I need to send a custom http respone header. This is what I wrote. This is only works if I open a .html page. But it doesn't work if I open a .pdf in browser. So what did I do wrong?
Thanks
package com.mycompany.wcm.filter;
import org.apache.felix.scr.annotations.*;
import org.apache.felix.scr.annotations.sling.SlingFilter;
import org.apache.felix.scr.annotations.sling.SlingFilterScope;
import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.SlingHttpServletResponse;
import org.apache.sling.api.resource.*;
import org.apache.sling.api.scripting.SlingBindings;
import org.apache.sling.api.scripting.SlingScriptHelper;
import org.apache.sling.runmode.RunMode;
import org.osgi.service.cm.Configuration;
import org.osgi.service.cm.ConfigurationAdmin;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.jcr.Session;
import javax.servlet.*;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
#SlingFilter(
label = "Sample Filter",
description = "Sample Description",
metatype = true,
generateComponent = true, // True if you want to leverage activate/deactivate
generateService = true,
order = -501, // The smaller the number, the earlier in the Filter chain (can go negative);
scope = SlingFilterScope.REQUEST)
#Properties({
#Property(
label = "Vendor",
name = "service.vendor",
value = "SampleVendor",
propertyPrivate = true
)
})
public class AssetFilter implements Filter {
#Override
public void init(FilterConfig filterConfig) throws ServletException {
}
#Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
final SlingHttpServletRequest slingRequest = (SlingHttpServletRequest) request;
final SlingHttpServletResponse slingResponse = (SlingHttpServletResponse) response;
slingResponse.setHeader("myheader1","no-cache");
slingResponse.setHeader("myheader2","no-store");
chain.doFilter(request, response);
}
#Override
public void destroy() {
}
}
Just a update, initialy I thought the problem only happens to .pdf file, but this also happens to image file. So I created a regular JSP web application, and this code is working for regular web app. Is there something funny on AEM side?

how to write code for user task in JBPM

I am a newbie when it comes to JBPM. And while I have created the sample application with a script task and user task. When I remove user task the bpmn is executing fine. But when I keep UserTask it is throwing an exception.
Following is my code:
package com.Sservlet;
import java.io.IOException;
import java.util.List;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.*;
import org.drools.KnowledgeBase;
import org.drools.SystemEventListenerFactory;
import org.drools.builder.*;
import org.drools.io.ResourceFactory;
import org.drools.runtime.StatefulKnowledgeSession;
import org.drools.runtime.process.ProcessInstance;
import org.jbpm.bpmn2.handler.ServiceTaskHandler;
import org.jbpm.process.workitem.wsht.CommandBasedWSHumanTaskHandler;
import org.jbpm.task.*;
import org.jbpm.task.service.*;
public class SServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// TODO Auto-generated method stub
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(ResourceFactory.newClassPathResource("Jcr.bpmn2"), ResourceType.BPMN2);
KnowledgeBase kbase = kbuilder.newKnowledgeBase();
StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
CommandBasedWSHumanTaskHandler taskHandler = new CommandBasedWSHumanTaskHandler(ksession);
ksession.getWorkItemManager().registerWorkItemHandler("Human Task", new ServiceTaskHandler());
EntityManagerFactory emf = Persistence.createEntityManagerFactory("org.jbpm.task");
TaskService taskService = new TaskService(emf, SystemEventListenerFactory.getSystemEventListener());
TaskServiceSession taskSession = taskService.createSession();
// now register new users and groups
List list = taskSession.getTasksAssignedAsPotentialOwner("John", "en-UK");
taskHandler.connect();
ProcessInstance processInstance = ksession.startProcess("TestHandle");
System.out.println("hello here are");
}
}
I am receiving a No Persistence provider exception:
javax.persistence.PersistenceException: No Persistence provider for EntityManager named org.jbpm.task
I don't need any database insertion here. It is a simple user-task. Is there any solution?

java.lang.ClassCastException: Servlet.Telnet cannot be cast to javax.servlet.Servlet

I want to implement a servlet and call it in a WebApp.
I am constantly get java.lang.ClassCastException: Servlet.Telnet cannot be cast to javax.servlet.Servlet from the Apache Tomcat Server. I made sure my class extends HttpServlet this is my code:
package Servlet;
import java.io.IOException;
import java.io.PrintStream;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.net.telnet.TelnetClient;
public class Servlet extends HttpServlet {
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try {
TelnetClient telnet = new TelnetClient();
telnet.connect(request.getParameter("router"), 23);
PrintStream output = new PrintStream(telnet.getOutputStream());
output.println(request.getParameter("login"));
output.flush();
output.println(request.getParameter("password"));
output.flush();
out.printf("SUCCESS");
telnet.disconnect();
} catch (Exception e) {
e.printStackTrace();
out.printf("ERROR");
}
}

I renamed the package and the class and it works perfectly.

Addition of web service access in servlet unrecognized/unresolved; seen as "type".

I am trying to create a simple servlet (tomcat) that accesses a database, then a USDA web service. I've successfully deployed/tested the database connectivity. When I added the web service access, eclipse reports the problem: AwdbWebService_Service cannot be resolved to a type.
The hour is late... I just don't see why this won't resolve as a service instance.
The error is tripped by this line:
AwdbWebService_Service lookup = new AwdbWebService_Service(wsURL,new QName("http://www.wcc.nrcs.usda.gov/ns/awdbWebService","AwdbWebService"));
Here is the code:
package localdomain.localhost;
import java.io.IOException;
import java.io.PrintWriter;
import java.math.BigDecimal;
import java.net.URL; //added for usda webservice
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;
import java.text.SimpleDateFormat;
import java.util.*;
import java.util.logging.Logger;
import javax.annotation.Resource;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sql.DataSource;
import javax.xml.namespace.QName; // added for usda webservice
import usda.nrcs.wcc.awdbWebService.*;
#WebServlet(value = "/MyServlet")
public class MyServlet extends HttpServlet {
// use this for usda reservoir station values later
static final SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
protected final Logger logger = Logger.getLogger(getClass().getName());
#Resource(name = "jdbc/mydb", lookup = "jdbc/mydb")
private DataSource dataSource;
#Override
public void init(ServletConfig config) throws ServletException {
super.init(config);
logger.info("Init");
System.out.println(getClass().getName() + ".init");
}
protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
{
PrintWriter writer = resp.getWriter();
writer.println("<html>");
writer.println("<head><title>MyServlet</title></head>");
writer.println("<body><h1>MyServlet</h1>");
writer.println("<h2>DataSource</h2>");
Connection conn = null;
try {
writer.println("Datasource: " + dataSource + "<br/><br/>");
conn = dataSource.getConnection();
Statement stmt = conn.createStatement();
ResultSet rst = stmt.executeQuery("select 1");
while (rst.next()) {
writer.println("Resultset result: " + rst.getString(1) + "<br/><br/>");
}
rst.close();
stmt.close();
conn.close();
writer.println("SUCCESS to access the datasource");
// Now try accessing usda
URL wsURL = new URL("http://www.wcc.nrcs.usda.gov/awdbWebService/services?wsdl");
AwdbWebService_Service lookup = new AwdbWebService_Service(wsURL,new QName("http://www.wcc.nrcs.usda.gov/ns/awdbWebService","AwdbWebService"));
m_webService = lookup.getAwdbWebServiceImplPort();
} catch (Exception e) {
e.printStackTrace(writer);
e.printStackTrace();
} finally {
if (conn != null) {
try {
conn.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
writer.println("</body></html>");
}
}

For those following this thread:
The package statement at the start of the java classes I generated with wsimport begins with:
package gov.usda.nrcs.wcc.awdbWebService
My import statement however looked like this:
import usda.nrcs.wcc.awdbWebService.*;
In essence I placed the source # the wrong level and defined the build config to point incorrectly for the package references in the java classes. I removed the build reference, moved the tree to begin pointing on the gov level. Now that there wasn't a mismatch, the unresolved type error vanished.