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unable to retrive the data from database using servlets [duplicate]
I created a Java Dynamic Project using ecllipse with Servlets, JSP and Mysql where i tried to retrive the data from database but while running it getting the below...
View ArticleAre multiple servlets still used? [closed]
I was learning Spring Boot and found out that you can have multiple servlets in a single Spring Boot application. I was thinking about the use case of having multiple servlets, one that came to my mind...
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Why do I get the response code 200 when request sent from Postman to Tomcat...
issueWhy do I get the response code 200 when request sent from Postman to Tomcat server in my project. but get 404 in another project?To my project HealthHelperIn my project HealthHelper,I ran the...
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Java HTTP Servlet returns 405 despite implementing doPost [duplicate]
Here is the HTML code:<!DOCTYPE html><html><head><meta charset="UTF-8"><title>Add Two Numbers</title></head><body><h1>Please enter...
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Why Spring Dependency Injection @Autowired throws NullPointerException in a...
Project Structure:TestController.java:package com.mypack;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.annotation.WebServlet;import...
View Articlejava.lang.NullPointerException in FilterChain doFilter method
I have added a filter in web.xml deployment descriptor. But whenever a request is coming to the server, the filter throws a NullPointerException:java.lang.NullPointerException...
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Dependency 'jakarta.servlet:jakarta.servlet-api:10.0.0' not found [duplicate]
I was working on a maven project in intellij-idea and for some reason decided to change my java language level to 15 from 8 and now it does not recognise the jakarta package that I imported.I tried...
View ArticleApache Velocity - Resource not found exception
I have a requirement to generate some automated mails and so I wanted to use velocity for this task.I have copied all velocity jars to the lib folder and created a hello.vm template and placed in...
View ArticleIs there a way to dynamically trigger SSL/TLS renegotiation in a servlet?
I want to be able to accept both web browser clients and (automated) service clients to a single servlet running in my application. Some of the service clients will authenticate with TLS client...
View ArticleError 404 on using servlets with Struts 2
I have all of the Struts jars included in WEB-INF/lib and imported to project. I am trying to migrate from simple servlets based project to Struts 2. I added a <filter> tag in web.xml and...
View ArticleWorks in Tomcat, fails in Wildfly 13. ServletException:...
We try to deploy pwm-project in Wildfly 13 and we are interested in Server WAR implementation. The project has been developed and tested in Apache Tomcat 8.0.33. We have succeeded in running on Tomcat...
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SEC_E_INVALID_TOKEN (0x80090308) - Jetty HTTPS servlet
I am trying to solve an issue with my Jetty servlet running over HTTPS.This is an error in the browser:This is an error in the curl:What I did:I created my Keystore and Truststore as is described here:...
View ArticleOn JSP page unable to get attribute from a Servlet with and without getSession()
I have a web app that must get the city's name by an API request, it should give the foirecast for that city. But in the JSP file I am not able to get a variable with getAttribute() from the...
View ArticleThe JSP page itself is not loading
I have a JSP page that contains a form from which I have to call a servlet. But even after adding servlet mapping in web.xml and also trying @WebServlet annotation, the JSP page itself is not loading....
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Error continues to occur saying that the list is empty in JSP? [duplicate]
I want to put data values from db into Employee class and then display all values in JSP file. However, an error continues to occur saying that the list is empty.Employee.javapackage...
View ArticleGenerated servlet error: default methods are not supported in -source 1.5...
I am using Netbeans version 8.2 to practice my spring MVC project.The version of default IDK provided by netbeans is 1.8 , I am using this project to learn form validation. I am using all the libraries...
View ArticleWhy Uploaded Image not being displayed in IE?
I am using simple HTML page for upload and post image to a servlet, then I convert image in byte[] and save it in session using doPost() method: response.setContentType("text/html"); items =...
View ArticleHttp error 404 in servlet: No webpage was found for the web address [duplicate]
PrintNamesServlet.java://This servlet prints the entered name of the user.import javax.servlet.ServletException;import javax.servlet.annotation.WebServlet;import javax.servlet.http.HttpServlet;import...
View ArticleIssue with AJAX-based Dynamic Dependent Dropdowns: "Error loading...
I'm trying to create a set of dynamic dependent dropdown menus with jQuery and AJAX. The dropdowns should show categories, subcategories, and further subcategories. However, I'm encountering an issue...
View ArticleError 404 - Not Found No context on this server matched or handled this...
Here is my index.jsp code:<html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Index JSP...
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