java-ee

问题 I have to calculate in Java what is the number of the current day in the year. For example if today is the 1 of January the resut should be 1 . If it is the 5 of February the result should be 36 How can I automatically do it in Java? Exist some class (such as Calendar ) that natively supports this feature? 回答1: You can use java.util.Calendar class. Be careful that month is zero based. So in your case for the first of January it should be: Calendar calendar = new GregorianCalendar(2015, 0, 1);

问题 We are deploying our GWT app to a Wildly 8.1.0 server and are using form authentication for security. Our problem is that every time our customer has a special character (æøåäëö, etc.) in their username or password, they cannot login. I have seen other people having the same issue: https://developer.jboss.org/thread/42859?tstart=0 UTF-8 encoded j_security_check username incorrectly decoded as Latin-1 in Tomcat realm Spring security: Form login special characters but they are using Tomcat

问题 I'm trying to adjust the session timeout using HttpSession.setMaxInactiveInterval and it's not working. Here is my code (Groovy), which is executing without exceptions: def paramValue = WebAttributes.REQUEST.getParameter('maxInactiveSeconds'); println 'paramValue=' + paramValue; if (paramValue != null) { def seconds = Integer.parseInt(paramValue); WebAttributes.REQUEST.getSession().setMaxInactiveInterval(seconds); } Some details: Tomcat 6.0.16 This is happening in a webapp separate from the

问题 This is test class: I try to inject a Paper object then perform the action to test whether the injection is failed or not. @RunWith(Arquillian.class) public class ExcelProcessorTest { // Not work. Because Paper and ExcelProcessorTest are in different modules? @Inject private Paper paper; @Deployment public static JavaArchive createDeployment() { JavaArchive jar = ShrinkWrap.create(JavaArchive.class, "test.jar") .addClasses(Paper.class) .addAsManifestResource(EmptyAsset.INSTANCE, "beans.xml");

问题 I am new to ejbs. I wrote a stateful session bean scoped @SessionScoped. Then I injected the ejb into my servlet. @Local @SessionScoped @Statueful public class CartServiceImpl implements CartService { private int i = 0; public int getI() { return i++; } } In my servlet @Inject private CartService cartService; . . . out.print(cartService.getI()); Then I opened two browsers (IE, FF) and have hit the servlet. In IE I see output starting from 0 to n. In firefox also I see the output starting from

问题 I have a JSP file, member.jsp which is as follows : <%@ page import="java.util.*" %> <jsp:include page="/html_functions.jsp" /> <% String heading = "Header" %> <%= formStart("a_form") %> <%= printPageHeader(heading) %> <%= startMyLi() %> <%= endLi() %> <%= formEnd() %> and my html_functions.jsp is as follows : <%! public String formStart(String name) { String structure = "<div id=\"content\"><form name=\"" + name + "\" method=\"post\"><ul>"; return structure; }//formStart public String

问题 When our application throws errors that we catch, we put the message and stacktrace in a log file created specifically for our application (myapp.log). For example: public class SomeClass { OurLogger log = OurLogger.getLogger ("myapp", SomeClass.class); public void someMethod { try { //code } catch (DataAccessException e) { log.error(e.getMessage(), e); } } } We do this because since we are in a environment where multiple apps reside on an application server...ours and every other

问题 We are developing a Java-EE Application running on Wildfly 8 in the Wildfly-Openshift-Cartridge. The Openshift Application is set to scaled, therefore, more than one JVM node will be running as a cluster. The communicate between the different nodes, I like to use JGroups. However, I fail to open a new JChannel even though the JGroups itself seems to work. The application itself does also work, if I deploy the application locally to e.g. 3 wildfly standalone instances. The default standalone

问题 I tried to inject my EJB bean in Arquillian integration tests with WebSphere embedded container. When injecting EJB I get the NullPointerException. But container is started correctly, because translogs are occured. I followed the exmaple at the https://github.com/arquillian/arquillian-container-was/blob/master/was-embedded-8/src/test/java/org/jboss/arquillian/container/was/embedded_8/WebSphereEmbeddedIntegrationClientTestCase.java My test code: package com.daoleen.websphere.arquillian.test;

问题 Does anyone know if it's possible to start/stop an EJB within my application code? Eg. I have some MDBs that I wish to selectively start/stop while my application is running? Any ideas? Can this maybe be done via JMX? Cheers! 回答1: The EJB spec has no mechanism to start/stop individual EJBs (or even modules) within an application. It is possible to start/stop applications dynamically using JMX via JSR 77. (I see you're using the jboss tag. I have no expertise in JBoss, so I don't know if it