Both the servlets look OK to me and so do the XML files. Does the object
violate any constraints (like unique key constraints)? Is there any
other message in the server log (domains/domain1/logs/server.log)? Can
you switch to using em.merge() instead of em.persist()?
Thanks,
Sahoo
glassfish_at_javadesktop.org wrote:
> Thank you for your reply.
>
> Here is a version of the servlet that does not work:
> ----------------------------------------------------------------------------------
> package com.xerox.wrc.arundel;
>
> import java.io.IOException;
> import javax.persistence.*;
> import javax.transaction.*;
> import javax.annotation.*;
> import javax.naming.*;
>
> import javax.servlet.RequestDispatcher;
> import javax.servlet.ServletContext;
> import javax.servlet.ServletException;
> import javax.servlet.http.HttpServletRequest;
> import javax.servlet.http.HttpServletResponse;
>
> // @PersistenceContext(unitName="HibernateTestPU", name="persistence/em")
> public class AddDestination extends ArundelServlet implements javax.servlet.Servlet {
> // @PersistenceUnit
> // private EntityManagerFactory emf;
> @Resource
> private UserTransaction trans;
>
> static final long serialVersionUID = 1L;
>
> /* (non-Java-doc)
> * @see javax.servlet.http.HttpServlet#HttpServlet()
> */
> public AddDestination() {
> super();
> }
>
> /* (non-Java-doc)
> * @see javax.servlet.http.HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
> */
> protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
>
> ServletContext context = getServletContext();
>
> response.setContentType("text/html");
> java.io.PrintWriter out = response.getWriter();
>
> try {
> out.println("<html><head><title>Arundel Add Destination</title></head><body>");
> out.println("<h2>Arundel Add Destination</h2>");
>
> // list fields
>
>
> // form for new destination
> out.println("<form method=POST action=\"AddDestination\">");
> out.println("<table border='1'");
> out.print("<tr><th colspan=\"3\" align=center>Adding Destination</th></tr>");
>
> out.print("<tr>");
> out.print("<td>Name</td>");
> out.print("<td><input type=\"text\" name=name size=\"30\"</td>");
> out.print("<td>Required</td>");
> out.println("</tr>");
> out.print("<tr>");
> out.print("<td>URL</td>");
> out.print("<td><input type=\"text\" name=url size=\"30\"</td>");
> out.print("<td>Required</td>");
> out.println("</tr>");
> out.print("<tr>");
> out.print("<td>Comment</td>");
> out.print("<td><input type=\"text\" name=comment size=\"30\"</td>");
> out.print("<td>Optional</td>");
> out.println("</tr>");
>
> out.println("</table>");
> out.println("<input type=\"submit\" value=\"Submit\">");
> out.println("</form>");
>
> } catch (Exception e) {
> throw new ServletException(e.getMessage());
> }
>
>
> }
>
> /* (non-Java-doc)
> * @see javax.servlet.http.HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
> */
> protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
> String destination = new String("");
> ServletContext context = getServletContext();
>
> try {
>
> response.setContentType("text/html");
> java.io.PrintWriter out = response.getWriter();
>
> String name = request.getParameter("name");
> String url = request.getParameter("url");
> String comment = request.getParameter("comment");
>
> if (name == null) {
> out.println("<html><head><title>Arundel Error</title></head><body>");
> out.println("<h2>Error: Name cannot be null</h2>");
> out.println("</body>");
> out.println("</html>");
> return;
> }
> if (url == null) {
> out.println("<html><head><title>Arundel Error</title></head><body>");
> out.println("<h2>Error: URL cannot be null</h2>");
> out.println("</body>");
> out.println("</html>");
> return;
> }
>
> Context ic = new InitialContext();
> EntityManager myEM = (EntityManager) ic.lookup("java:comp/env/persistence/em");
> // EntityManager myEM=emf.createEntityManager();
>
> Destination dest = new Destination();
> dest.setName(name);
> dest.setUrl(url);
> dest.setComment(comment);
>
> trans.begin();
>
> // OK, the book says to call persist() to start managing the entity - but it doesn't work
> // em.persist(dest);
> myEM.persist(dest);
>
> trans.commit();
>
> String forwardPath = "/ListDestinations";
> RequestDispatcher dispatcher = context.getRequestDispatcher(forwardPath);
> if (dispatcher == null) {
> // context.log("EditDestination: Couldn't get a dispatcher for " + forwardPath);
> // now what?
> throw new ServletException("EditDestination: Couldn't get a dispatcher for " + forwardPath);
> } else {
> dispatcher.forward(request, response);
> }
>
> } catch (Exception e) {
> context.log(e.getMessage());
> throw new ServletException(e.getMessage());
> }
> }
> }
> --------------------------------------------------
>
> Here is another version that does not work:
>
> _____________________________
>
> package com.xerox.wrc.arundel;
>
> import java.io.IOException;
> import javax.persistence.*;
> import javax.transaction.*;
> import javax.annotation.*;
> import javax.naming.*;
>
> import javax.servlet.RequestDispatcher;
> import javax.servlet.ServletContext;
> import javax.servlet.ServletException;
> import javax.servlet.http.HttpServletRequest;
> import javax.servlet.http.HttpServletResponse;
>
> /**
> * Servlet implementation class for Servlet: EditDestination
> *
> */
> @PersistenceContext(unitName="HibernateTestPU", name="persistence/em")
> public class AddDestination extends ArundelServlet implements javax.servlet.Servlet {
> // @PersistenceUnit
> // private EntityManagerFactory emf;
> @Resource
> private UserTransaction trans;
>
> static final long serialVersionUID = 1L;
>
> /* (non-Java-doc)
> * @see javax.servlet.http.HttpServlet#HttpServlet()
> */
> public AddDestination() {
> super();
> }
>
> /* (non-Java-doc)
> * @see javax.servlet.http.HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
> */
> protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
>
> ServletContext context = getServletContext();
>
> response.setContentType("text/html");
> java.io.PrintWriter out = response.getWriter();
>
> try {
> out.println("<html><head><title>Arundel Add Destination</title></head><body>");
> out.println("<h2>Arundel Add Destination</h2>");
>
> // list fields
>
>
> // form for new destination
> out.println("<form method=POST action=\"AddDestination\">");
> out.println("<table border='1'");
> out.print("<tr><th colspan=\"3\" align=center>Adding Destination</th></tr>");
>
> out.print("<tr>");
> out.print("<td>Name</td>");
> out.print("<td><input type=\"text\" name=name size=\"30\"</td>");
> out.print("<td>Required</td>");
> out.println("</tr>");
> out.print("<tr>");
> out.print("<td>URL</td>");
> out.print("<td><input type=\"text\" name=url size=\"30\"</td>");
> out.print("<td>Required</td>");
> out.println("</tr>");
> out.print("<tr>");
> out.print("<td>Comment</td>");
> out.print("<td><input type=\"text\" name=comment size=\"30\"</td>");
> out.print("<td>Optional</td>");
> out.println("</tr>");
>
> out.println("</table>");
> out.println("<input type=\"submit\" value=\"Submit\">");
> out.println("</form>");
>
> } catch (Exception e) {
> throw new ServletException(e.getMessage());
> }
>
>
> }
>
> /* (non-Java-doc)
> * @see javax.servlet.http.HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
> */
> protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
> String destination = new String("");
> ServletContext context = getServletContext();
>
> try {
>
> response.setContentType("text/html");
> java.io.PrintWriter out = response.getWriter();
>
> String name = request.getParameter("name");
> String url = request.getParameter("url");
> String comment = request.getParameter("comment");
>
> if (name == null) {
> out.println("<html><head><title>Arundel Error</title></head><body>");
> out.println("<h2>Error: Name cannot be null</h2>");
> out.println("</body>");
> out.println("</html>");
> return;
> }
> if (url == null) {
> out.println("<html><head><title>Arundel Error</title></head><body>");
> out.println("<h2>Error: URL cannot be null</h2>");
> out.println("</body>");
> out.println("</html>");
> return;
> }
>
> Context ic = new InitialContext();
> EntityManager myEM = (EntityManager) ic.lookup("java:comp/env/persistence/em");
> // EntityManager myEM=emf.createEntityManager();
>
> Destination dest = new Destination();
> dest.setName(name);
> dest.setUrl(url);
> dest.setComment(comment);
>
> trans.begin();
>
> // OK, the book says to call persist() to start managing the entity - but it doesn't work
> // em.persist(dest);
> myEM.persist(dest);
>
> trans.commit();
>
> String forwardPath = "/ListDestinations";
> RequestDispatcher dispatcher = context.getRequestDispatcher(forwardPath);
> if (dispatcher == null) {
> // context.log("EditDestination: Couldn't get a dispatcher for " + forwardPath);
> // now what?
> throw new ServletException("EditDestination: Couldn't get a dispatcher for " + forwardPath);
> } else {
> dispatcher.forward(request, response);
> }
>
> } catch (Exception e) {
> context.log(e.getMessage());
> throw new ServletException(e.getMessage());
> }
> }
> }
> -------------------------------------------
>
> Here is persistence.xml:
>
> --------------------------------------------
>
> <?xml version="1.0" encoding="UTF-8"?>
> <persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">
> <persistence-unit name="HibernateTestPU" transaction-type="JTA">
> <jta-data-source>jdbc/arundel</jta-data-source>
> <class>com.xerox.wrc.arundel.Destination</class>
> <class>com.xerox.wrc.arundel.Policy</class>
> <class>com.xerox.wrc.arundel.Policyconf</class>
> <class>com.xerox.wrc.arundel.Service</class>
> <class>com.xerox.wrc.arundel.Serviceparameter</class>
> </persistence-unit>
> </persistence>
>
> -------------------------------------------------
>
> Here is web.xml:
>
> -----------------------------------------------
> <?xml version="1.0" encoding="UTF-8"?>
> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
> <servlet>
> <servlet-name>ListDestinations</servlet-name>
> <servlet-class>com.xerox.wrc.arundel.ListDestinations</servlet-class>
> </servlet>
> <servlet>
> <servlet-name>ArundelServlet</servlet-name>
> <servlet-class>com.xerox.wrc.arundel.ArundelServlet</servlet-class>
> </servlet>
> <servlet>
> <servlet-name>ShowDestination</servlet-name>
> <servlet-class>com.xerox.wrc.arundel.ShowDestination</servlet-class>
> </servlet>
> <servlet>
> <servlet-name>EditDestination</servlet-name>
> <servlet-class>com.xerox.wrc.arundel.EditDestination</servlet-class>
> </servlet>
> <servlet>
> <servlet-name>AddDestination</servlet-name>
> <servlet-class>com.xerox.wrc.arundel.AddDestination</servlet-class>
> </servlet>
> <servlet-mapping>
> <servlet-name>ListDestinations</servlet-name>
> <url-pattern>/ListDestinations</url-pattern>
> </servlet-mapping>
> <servlet-mapping>
> <servlet-name>ArundelServlet</servlet-name>
> <url-pattern>/ArundelServlet</url-pattern>
> </servlet-mapping>
> <servlet-mapping>
> <servlet-name>ShowDestination</servlet-name>
> <url-pattern>/ShowDestination</url-pattern>
> </servlet-mapping>
> <servlet-mapping>
> <servlet-name>EditDestination</servlet-name>
> <url-pattern>/EditDestination</url-pattern>
> </servlet-mapping>
> <servlet-mapping>
> <servlet-name>AddDestination</servlet-name>
> <url-pattern>/AddDestination</url-pattern>
> </servlet-mapping>
> <persistence-context-ref>
> <persistence-context-ref-name>persistence/em</persistence-context-ref-name>
> <persistence-unit-name>HibernateTestPU</persistence-unit-name>
> </persistence-context-ref>
> <session-config>
> <session-timeout>
> 30
> </session-timeout>
> </session-config>
> <welcome-file-list>
> <welcome-file>index.html</welcome-file>
> </welcome-file-list>
> </web-app>
>
> ----------------------------------------------------------------------
> [Message sent by forum member 'bclyon' (bclyon)]
>
> http://forums.java.net/jive/thread.jspa?messageID=259943
>
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