java-ee

问题 I wonder if it is possible to connect to Hotmail with JavaMail? I've tried this but it doesn't work, connection refused... String host = "pop3.live.com"; String username = "laqetqetqet@hotmail.com"; String password = "rqetqetq"; Session session; Store store; String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory"; Properties pop3Props = new Properties(); pop3Props.setProperty("mail.pop3.socketFactory.class", SSL_FACTORY); pop3Props.setProperty("mail.pop3.socketFactory.fallback", "false");

问题 import org.aspectj.lang.annotation.Aspect; import org.aspectj.lang.annotation.Around; import org.aspectj.lang.ProceedingJoinPoint; @Aspect public class AroundExample { @Around("com.xyz.myapp.SystemArchitecture.businessService()") public Object doBasicProfiling(ProceedingJoinPoint pjp) throws Throwable { // start stopwatch Object retVal = pjp.proceed(); // stop stopwatch return retVal; } } 回答1: You will need current version of aspectj jars i.e. aspectjrt-1.6.6.jar and aspectjweaver-1.7.2.jar

问题 import org.aspectj.lang.annotation.Aspect; import org.aspectj.lang.annotation.Around; import org.aspectj.lang.ProceedingJoinPoint; @Aspect public class AroundExample { @Around("com.xyz.myapp.SystemArchitecture.businessService()") public Object doBasicProfiling(ProceedingJoinPoint pjp) throws Throwable { // start stopwatch Object retVal = pjp.proceed(); // stop stopwatch return retVal; } } 回答1: You will need current version of aspectj jars i.e. aspectjrt-1.6.6.jar and aspectjweaver-1.7.2.jar

问题 I'm trying the "TREAT AS" function from JPA 2.1 (eclipselink) and I'm stuck with an error from JPA: Exception Description: ReportQuery result size mismatch. Expecting [263], but retrieved [197] Here is my JPQL query (I change some parts to be more explicit): String jpql = "select distinct s, accountAD " + "from SheetAccountUser s " + "left join fetch s.userTarget target " + "left join TREAT(target.accounts AS ADAccount) accountAD "; ADAccount is a subclass from AbstractAccount (@Inheritance

问题 I'm having trouble getting a composite primary key and foreign keys working in JPA 2/Hibernate. I'm trying to create a simple scenario with countries and provinces: Country Entity: @Entity @Table(name = "country") public class Country extends DomainObjectBase implements Serializable { @Id @Basic(optional = false) @Column(name = "code") private String code; @Basic(optional = false) @Column(name = "name") private String name; @OneToMany(cascade = CascadeType.ALL, mappedBy = "country") private

问题 I wanted to read contents of Excel files in my web-based project (J2EE-JSP+Servlets) which are located inside the web server's folder. I have made a java file, which i will call through a JSP page using JSTL library, but I need to get the path of the Excel sheet in the Java file, so I can read the contents. How can I get the path to the current Java file and so the Excel file? Also, I will be reading the contents of the Excel file through POI library. I was able to do this in J2SE development

问题 I wanted to read contents of Excel files in my web-based project (J2EE-JSP+Servlets) which are located inside the web server's folder. I have made a java file, which i will call through a JSP page using JSTL library, but I need to get the path of the Excel sheet in the Java file, so I can read the contents. How can I get the path to the current Java file and so the Excel file? Also, I will be reading the contents of the Excel file through POI library. I was able to do this in J2SE development

问题 Can you point to a class implementing the ServletContainerInitializer interface in the web.xml file or do you have to add a file under the META-INF/services/javax.servlet.ServletContainerInitializer to have a J2EE server pick it up? If it's possible via the web.xml file, please explain how. 回答1: I've checked the Java Servlet Specification 3.0 and I've not found any clue that it could be configured via web.xml . I think the only way is the META-INF/services/javax.servlet

问题 PrettyFaces is a dead simple URL rewriting engine. All sorts of SEO is possible and it is really really easy . I have one small problem though :( Using pretty faces, I have this rewrite rule: <url-mapping id="blogEntry"> <pattern value="/blog/#{shortUrl}" /> <view-id value="/blogEntry.jsf" /> </url-mapping> So the URL bar looks like: http://host.com/blog/first-post And the rewrite rule maps the request internally to: http://host.com/blogEntry?shortUrl=first-post I'm implementing OpenID, which

问题 My ear application was working fine. But suddenly it started to throw javax.ejb.EJBException in some method calls, instead of returning the original Application Exception (annotated with @ApplicationException(rollback=true). Now the original application exception is wrapped in the EJBException. the Currently the other developer who was working in the project is on leave. Therefore I have no idea what he has done to the code for happening this. This application exception and ejb remote