152 Topics
I have been doing web development with PHP for the last few years, and like a lot of people, I have a strong dislike for PHP. I also have done lots of Java development, but never web development. Having a good knowledge of Java, I decided I would try web …
I am trying to create an HTML form which displays text from a text file, using a Java Servlet. I keep getting the following error: Error instantiating servlet class servlets.ReportServlet. Here is the HTML page: <html> <head> <title>TODO supply a title</title> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> </head> <body> <form …
import java.io.*; import java.sql.*; import java.util.*; import javax.naming.*; public class Controller { public static String processUser(String sqlStmt, String whichSvlt){ String st =""; String first_name = null; String last_name; String ssn; String email; String address; String userid; String password; List<StudentInfo> result = new ArrayList<StudentInfo>(); // later I will use whichSvlt to …
hi, The jsp page has multiple check boxes (retrieved from DB),.... [CODE] <input type="checkbox" name="selecttype" value="<%=rs2.getString("description") %>"/> [/CODE] I've read these values in to servlet page using [CODE] String[] selecttype=request.getParameterValues("selecttype"); [/CODE] the 'selecttype' now contains only selected checkbox values. but i want to retrieve values of unchecked checkboxes. Pls help …
I set up a servlet project in eclipse and I am trying to connect a Access databasae(Ucanaccess) with it. By looking at below error, its look like I am missing jar files but if you take a look at attchement image. You will see all my jar files are in …
My servlet is not working even though the code seems to be correct. where have I gone wrong? First.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; public class First extends HttpServlet { protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html;charset=UTF-8"); try (PrintWriter …
Hi I have a Select element in my page, It looks like this [CODE] <select name="test"> <option value="1">Hi</option> <option value="2">Hello</option> <option value="3">GoodBye</option> </select> [/CODE] Ok, don't mind the syntax or if I missed something, everything works fine, the problem is that I want to get the selected option value from …
Hi there , We know that we can use taglibs in JSP page. Is it possible to refer tlds and its tags from the servlets. Can we have control over the taglibs in the servlet programmatically ? I googled but invain. All the results are about creating custom taglibs. Any …
Dear friends, I want to know if we can pass a text area value of great length from jsp to servlet as a url parameter. I have tried it but it sends a null value to the servlet. Please help me. It's urgent. Thanks and regards. Sriprasad Kannan.
I need a help With this Program ,as I am getting Error in Tomcat Server While Connecting To the Web Browser .
> unable to process the application .cant store user data into the data base,shows only a blank page # servlet code # import java.sql.*; import java.io.IOException; import java.io.PrintWriter; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; @WebServlet(name = "register", urlPatterns = {"/register"}) public class Register extends HttpServlet { …
Hello everyone, Can you help me with the following problem. I am working on Eclipse IDE. I created new Dynamic Web Project and when I tried to create a Servlet class though every required package is imported it gives a compiler error. The following is a sample code. import java.io.*; …
I am using UTF-8 encoding to display hindi fonts in servlet but hindi fonts are displaying in following format - à ¤¶à ¤ªà ¤¥ à ¤à ¤¯ à ¤à ¤° à I am using following code- response.setContentType("text/html; charset=UTF-8"); StringWriter writer = new StringWriter(); t.merge(context, writer); String s = writer.toString(); in servlet response.getCharacterEncoding() // it is showing ISO-8859-1 …
Hi , i have done a project in servlet , i didn't get any error in the coding and console page . My problem is that datas are not added to the database. Below are my files. What i'm doing wrong ? StudentRegistration.html <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" …
Hi everyone. I am just learning how to use servlets. I need to make a lotto application. I have this template: import java.io.IOException; import java.io.PrintWriter; import java.util.ArrayList; import java.util.Collections; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class MyLottoServlet extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, …
I'm suppose to write a servlet that returns a randomly chosen greeting from a list of five different greetings. The greetings must be stored as constant strings in the program. This is all I've gotten so far and when I try to run it all it returns is "Hello World" …
I am working on a dynamic project for my own but struggling to create an article. The idea is that one registered user can publish an article with an image . <%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%> <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> <%@ taglib uri="http://java.sun.com/jsp/jstl/sql" prefix="sql" %> <!DOCTYPE html PUBLIC …
I'm developing an application in JAVA where a servlet is taking the inputs from a JSP page. After inserting the values in db it will redirect to another servlet. Then the 2nd servlet will dispatch a JSP page with an ArrayList. But I can't redirect from the 2nd servlet to …
hi i'm trying to connect a midlet running on my emulator (jwtk 2.5.2) to an apache tomcat server which has the servlet code. when i run the emulator instead of displaying the name i posted in the midlet code after connecting to the server, the screen displays the servlet code. …
i have project folder name: website_test package name: hello_servet testing_01.java web.xml index.html i need help with servlet name. i think iam names wrong. for ex is servlet-name the class name or project folder name?? web.xml file: <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"> <servlet> <servlet-name>website_test</servlet-name> <servlet-class>hello_servet.testing_01</servlet-class> …
Is it necessary to learn Servlet programming when one is already comfortable with JSP
how can i make a servlet to validate a form with two file upload one image and other a pdf file. along with the other string parameters like name age gender etc., i need to validate the pdf and image files in servlet and save it in folder of my …
hi, i need to write a program that ask the user for first name, lastname, day of birth, day, month year, using a html form, and print out the user info using a servlet, and when user type in the number of month, the output will have to be in …
Hi there i recently started web applications using jsp and servlets, is it possible to get all http sessions of logged in users in a servlet?
hello everybody first of all thanks to Daniweb and all its users for helping me lot of time. now come to the problem I've just started studying servlets 1 week back it was going well but i got one problrm when i try to run a packaged servlet code. path …
i ve already worked many time on this code ,but couldnt find whats wrong. [CODE]import java.io.*; import javax.servlet.*; import javax.servlet.http.*; import javax.servlet.ServletException; public class AppletServer extends HttpServlet { public void doPost(HttpServletRequest rq, HttpServletResponse rs) throws ServletException,IOException { String s,n,v; try { rs.setContentType("application/x-java-serialized-object"); InputStream i=rq.getInputStream(); ObjectInputStream oi=new ObjectInputStream(i); OutputStream o=rs.getOutputStream(); ObjectOutputStream …
I'm trying to run a simple servlet that counts the number of times a user visits the page using cookies but I'm getting the following error. I thought that NullPointerException was because there were no cookies at all in the browser. But after checking I found a couple of cookies …
Hello all! I'm having some confusions about what to use as the "Home Page" in my web app. Should I use Servlet?([url]www.foo.com/index[/url]) or JSP?([url]www.foo.com/index.jsp[/url]) I dont know what would be their entry point in my site. I mean, let say, they visit [url]www.foo.com/index.jsp[/url], and they click login, the page then …
I am new to JSP/Servlets, so here is what I am trying to do: suppose my url is [url]http://mywebsite.com/[/url] and user come on this and it shows a login form, after submitting the form I want to keep the url the same as before that is [url]http://mywebsite.com/[/url] means it should …
Hello every body>> ^_^ I want your help, I have done code that retrive data from the databse and the user can add data in the database , I want to do validition for student ID, if its in the datase before (if its valid before or not) I need …
Hi Every Body Does any one help me in deploying and running Servlet and JSP in Tomcat 5.5 I tried all the ways I found on net. I downloaded lots of tutorials and tried them also. But always getting same ugly error CONTEXT Path not found \TestInput I am just …
Hi all, I am trying to compile a servlet, and am getting the following error. [code] C:\Program Files\Apache Software Foundation\Tomcat 5.5\webapps\flatironswp1\WEB-INF\classes>javac export\ExportUtil.java export\ExportUtil.java:5: package javax.servlet.http does not exist import javax.servlet.http.*; ^ [/code] and here's my code: [code] package export; import java.io.*; import javax.servlet.http.*; import javax.servlet.*; public class ExportUtil extends HttpServlet …
Hi all I am calling a function from my servlet but getting following exception SEVERE: Servlet.service() for servlet In_Servlet threw exception javax.servlet.ServletException: Servlet execution threw an exception at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:313) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445) at …
I simply want to forward a request of one servlet to another servlet. Authentication Servlet gets a request from a jsp page and thus authenctication servlet passes the request to another Addtocart servlet. AuthenticationServlet Code: [CODE] RequestDispatcher rd= request.getRequestDispatcher("/Addtocart"); rd.forward(request, response); response.sendRedirect("Addtocart"); [/CODE] Addtocart servlet code: [CODE] String pid = …
How can I pass multiple values from a JSP to a servlet using an hyperlink. Following is my code [CODE]<div style="width:500px;height:20px;border:2px solid blue; padding-top:25px; padding-left:40px; padding-right:20px; padding-bottom:10px;"> <jsp:include page = "/Alphabet.jsp"/> </div> <a href = "cart.jsp"><img src="shopping_cart.jpeg" width=50 Height=75 alt="Shopping Cart" border="0" style="float:right;"></a> <%@ page import="com.classes.chemical.*, java.util.ArrayList" %> <td width …
I am outputting the contents of a product from a product object(containing catalog no, product name, vendor, price, quantity(a textbox) and a checkbox(to select the product)) as a tabular display. When a user checks a checkbox(indicating the product checked), I get the values into a servlet. However, when I have …
juz,i got a project online shopping, i have to use JSP/Servlet.I am familiar with jsp/servlet and database connectivity.It is my life's first project so i am very confuse.what should i do? Project minimum Requirement: Normal User can login,Sign up,add to cart, add to wishlist,no two purchase should add two time. …
hi all, I am quite new to J2EE . I want to connect mysql database which one will be best jsp or servlet.... the thing is we need to establish connection each time. Insted of that just one Java class will do that and the other classes call the method …
im creating a website that deals with the monthly reminders (extracted from Oracle) for my members for a school project. Should I create a login page using JSP or servlets? I am unfamiliar in both the languages. Will I need to establish my connection for each page if I use …
I have an application which accesses a catalog of items which can then be added to a cart. When a user selects the item(s) which could be "n" number by checking a checkbox and clicking the "Add to cart" button, the data has to be posted to a cartservlet. I …
In servlet side, I am trying to receive an vector sent from the applet. The code is like [CODE]InputStream in = request.getInputStream(); ObjectInputStream inputFromApplet = new ObjectInputStream(in); Vector v = (Vector)inputFromApplet.readObject(); [/CODE] But the compiler specifies that the following one is wrong. [CODE]Vector v = (Vector)inputFromApplet.readObject(); [/CODE] The error message …
I have made two programs in servlet....one for setting attribute and another for getting that attribute.... Here are those programs... /* For Setting Attribute */ [code=Java]import javax.servlet.*; import java.io.*; public class SettingCntx extends GenericServlet { ServletContext ctx; public void init(ServletConfig cfig) { /*Obtain the ServletContext object*/ ctx = cfig.getServletContext(); } …
Hello peeps, I want to test out this program but i am having problems! each time i run it - it goes " java.lang.NoSuchMethodError: main Exception in thread "main" " I know why i am having this error - coz i am missing my "public static void ....." But the …
I am trying to write a simple servlet program. But getting the error The requested resource (/servletexam/LoginServlet) is not available. I have created two servlet classes as follows - [B]LoginServlet[/B] [CODE] public class LoginServlet extends HttpServlet { Hashtable<String,String> users = new Hashtable<String,String>(); public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, …
Thanks for helping me out with my coding last time. Now I have an error with a class not found for my servlet. In the log, the following shows up: [CODE]SEVERE: Error loading WebappClassLoader delegate: false repositories: /WEB-INF/classes/ ----------> Parent Classloader: org.apache.catalina.loader.StandardClassLoader@1c0e45a cart.CartServlet java.lang.ClassNotFoundException: cart.CartServlet[/CODE] I've compiled all of the …
I am trying to write a simple servlet program. But getting the error [B]The requested resource (/servletexam/LoginServlet) is not available[/B]. I have created two servlet classes as follows - [B]LoginServlet[/B] [CODE] public class LoginServlet extends HttpServlet { Hashtable<String,String> users = new Hashtable<String,String>(); public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, …
Hello [B]I am experimenting with Java applets & communicating between a Servlet & an applet. I am experiencing a HTTP 501 error when I go to retrieve the input stream from my URLConnection object.[/B] I know that the 501 error means that I am attempting to perform an action that …
what is the difference Between JSP and Servlet?
hi! In my project ,the url should not be shown to the user.I want to hide it using servlet filter. Can anyone help me ,how to achieve this task...........thank u......
Hi.. I m haiving problem in retrieving selected data from combobox of servlet page . I have combobox in servlet and want to display selected value in d same page.. please help me to resolve this problem.. Here is my code: PrintWriter pw=response.getWriter(); pw.write("<h1>Welcome to Shopping cart</h1>"); pw.write("<form name=myform method=post>"); …
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