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request.getUserPrincipal() got null

User successfully authenticated but after authentication when I go to next controller I got request.getUserPrincipal() null. I am using websphere 7 and my application is in spring mvc.[详细]

2023-04-13 08:49 分类：问答
How to configure Maven pom for Tomcat 7 with JSF 2.0 and EL 2.2?

i want to use EL 2.2 for JSF 2 application and tomcat 7 is provided with EL 2.2 and i am confused about the following:[详细]

2023-04-13 08:42 分类：问答
How to connect to external MySQL server from Glassfish

I am trying to connect to a remote MySQL server. I have succesfully made a connection from Eclipse (DataSource view) and can now browse the content of the database.[详细]

2023-04-13 08:38 分类：问答
How to version dynamic business Objects/Data?

We are developing a large applications which are related to business. You can find these applications similar to some ERP, CRM, etc.[详细]

2023-04-13 08:33 分类：问答
Have we become over-reliant on cookies?

Once I turned off cookies, Amazon.com & Google.com 开发者_运维知识库refuses to sign me in.I am not able to log in into even Stackoverflow.com.Is no one using URL rewriting nowadays?[详细]

2023-04-13 08:21 分类：问答
Auto-reload changed files in Java

I have a lot of configuration files that modify how my application behaves.I want to be able to make a change and it gets reflected in the application right away when saving the file.Is there a Java l[详细]

2023-04-13 08:08 分类：问答
Spring Dependency Injection and Plugin Jar

I have web application running with a default impl of a backend service. One should be able to implement the interface and drop the jar into the plugins folder (which is not in the apps classpath). On[详细]

2023-04-13 08:05 分类：问答
Why is ServletConfig obj passed to init() of GenericServlet when the class implements the interface?

GenericServlet implements ServletConfig interface which means all the interface functions can be invoked from init() function of GenericServlet. Given this context, why does the Servlet container send[详细]

2023-04-13 05:14 分类：问答
unable to run comet sample code in java

Hi. I am trying to run Slideshow which is a comet sample code and i have downloaded it from here but when I am trying to run that sample code, I am getting following error at the time of deployment.[详细]

2023-04-13 03:32 分类：问答
How to redirect to error page in JSF when FacesContext session attribute is not found

I am developing a mobile webapp using JSF and Apache myFac开发者_Python百科es 1.2.9. During authentication i am calling a servlet which will do the authentication and then set some attribute in the s[详细]

2023-04-13 03:26 分类：问答