java-ee

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . Does anyone know because all the places I've tried seem to timeout! 回答1: You can download JSTL 1.1 here and JSTL 1.2 here. See also: JSTL wiki page 回答2: http://jstl.java.net/download.html It's been split into two separate JAR files: jstl-api.jar and jstl-impl.jar. 回答3: In the past, there was something like:

问题 In my web application there are some requests which last longer than 20 seconds. But in some situations the code can lead to infinite loop or something similar which slows down the server. I want to put a request timeout for 60 sec on the server side. Is this implemented in tomcat ? Thank you, Horatiu 回答1: With Tomcat 7, you can add the StuckThreadDetectionValve which will enable you to identify threads that are "stuck". You can set-up the valve in the Context element of the applications

问题 In my web application there are some requests which last longer than 20 seconds. But in some situations the code can lead to infinite loop or something similar which slows down the server. I want to put a request timeout for 60 sec on the server side. Is this implemented in tomcat ? Thank you, Horatiu 回答1: With Tomcat 7, you can add the StuckThreadDetectionValve which will enable you to identify threads that are "stuck". You can set-up the valve in the Context element of the applications

问题 I'm working on an application and where I need to refer my application images and other things like js etc. now in my JSP files when I'm trying to load images using this path <img src="static/media/images/logo.gif" alt="welcome" /> I saw the following error in the browser: unable to load the image I even tried to refer the absolute path <img src="/static/media/images/logo.gif" alt="welcome" /> but still no luck at all. Finally when I appended my project name it started working. E.g if my web

问题 I'm working on an application and where I need to refer my application images and other things like js etc. now in my JSP files when I'm trying to load images using this path <img src="static/media/images/logo.gif" alt="welcome" /> I saw the following error in the browser: unable to load the image I even tried to refer the absolute path <img src="/static/media/images/logo.gif" alt="welcome" /> but still no luck at all. Finally when I appended my project name it started working. E.g if my web

问题 I am using onclick event in anchor tag. when i clcik the anchor, I am invoking a java script function where I change the value of one input element and submit the form. The value is changed but the form does not submit the value. Please help me on this. FYI that if i create an element and add in the form before submission, it works. Why is not working in the first scenario. <form name="form" > <input type="hidden" name="input" value="test"/> <a onclick='testMethod("test")'>click </a> </form>

问题 In Inheritance concept, i have a static method in super class and i am inheriting that class to one sub class. In that case the static method is inherited to sub class or not? 回答1: If the method is public static or protected static in the superclass it will be accessible in the subclass. So in that sense it is inherited. The code below will compile and run fine. public class A { public static String foo() { return "hello world"; } } public class B extends A { public void bar() { System.out

问题 In Inheritance concept, i have a static method in super class and i am inheriting that class to one sub class. In that case the static method is inherited to sub class or not? 回答1: If the method is public static or protected static in the superclass it will be accessible in the subclass. So in that sense it is inherited. The code below will compile and run fine. public class A { public static String foo() { return "hello world"; } } public class B extends A { public void bar() { System.out

问题 Now two days trying to fix this problem. The problem seems to come from the DAO class. Caused by: projet.helpdesk.dao.DAOException: Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.6.1.v20150605-31e8258): org.eclipse.persistence.exceptions.DatabaseException Internal Exception: java.sql.SQLSyntaxErrorException: ORA-02289: sequence does not exist Error Code: 2289 Call: SELECT SEQ_GEN_IDENTITY.NEXTVAL FROM DUAL Query: ValueReadQuery(sql="SELECT SEQ_GEN_IDENTITY.NEXTVAL FROM DUAL")

问题 1) What is the meaning of @Priority for CDI @Interceptor ? 2) How does it relate to order of interceptors declared in beans.xml ? 3) Can @Priority be overwritten in xml file ? 回答1: 1) Well, as the name suggests, it's meant to set priority (order) to the interceptors within Java EE application. Such interceptor will also be automatically registered so you don't have to define it in beans.xml . 2, 3) JBoss documentation says that interceptors annotated with @Priority ale called before ones