Questions tagged as 'java-ee'

Tagged questions
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Angular 6 - Does not update parent class field in daughter class view

I try to make an api RESTfull with Angular 6 and Java, which must perform the CRUD operations, until now everything seems to work correctly, except to edit and insert in Employee and Auto. The model is composed of 3 tables, Branch, Employee a...
asked by 22.11.2018 / 21:40
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org.apache.jasper.JasperException: java.lang.NullPointerException

I have the following error, but it only happens when I add the tag , the user class is instantiated, but when the label is removed, it works normally. ] 2     
asked by 21.11.2018 / 02:59
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API restful @mantytoone JPA, Spring boot - 404 not found

The api rest of these two entities I'm testing in a postman that gives me 404, eclipse compiles well the project, so I guess it is something wrong raised in the logic of my service or controller, I do not know which of the I am bad or if in both...
asked by 18.11.2018 / 10:55
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configure tomEE with Docker

Thank you very much for your time, I am learning Docker and tomEE and I would like to configure it took more than a day dealing with everything I found on the web but I still can not even enter the manager I leave my file...
asked by 06.11.2018 / 07:49
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JAAS Realm: Access Subject from JSP

I would like to know if it is possible to access the JAAS Subject object from a JSP page. My intention is to save user information (full name, age ..) with subject.getPublicCredentials (). Add (). After the user authenticated he would show the i...
asked by 01.11.2018 / 20:07
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java.lang.NullPointerException - Connections from JNDI always null

Days later ask for help to get a database connection through JNDI ( Obtain connection to the database through the datasource of the application server ), well the connections worked, however I have the JNDI as a constant within the code so I am...
asked by 28.10.2018 / 02:50
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It does not return the value of AJAX

I have an index in the path webcontent / index.jsp and it calls a servlet through ajax and returns the value $(document).ready(function(){ $.post('actionServlet', { valor: "1" },function(responseText) { alert(responseText) $(...
asked by 11.10.2018 / 19:26
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Does not deploy the html with the Glassfish 5.0 server and netbeans 8.2

When I give Clean and build and then Run to the project, it does not display the htlm with the "Hello world", and it says Glassfish Server, deploy, null, false     
asked by 08.10.2018 / 16:18
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Javascript is not updated instantly on my website

I explain, I have a web page that has a menu in the left bar, this menu has several li and ul , these elements should be hidden depending on a variable that gives permission to users, for example : Usuario 1: [1,2,3,4] <-- Es d...
asked by 26.09.2018 / 17:12
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Words together if I do not put space

Hi, I'm a student who has just started and I'm doing a homework, I have a problem with this code import java.util.Scanner; public class Ejercicio11 { public static void main(String[] args) { Scanner entrada=new Scanner(System.in...
asked by 19.09.2018 / 12:56