[电脑] JavaBean Expert Help!!!

Yiben · 发表于 2002-7-11 15:03

Is anybody here an expert of JavaBean? Help please, I'm working on a web page using JavaBean and JSP.

I will pay for the help. :p

Yiben · 发表于 2002-7-11 22:12

急死我了, 快帮帮我!

can2000 · 发表于 2002-7-11 23:24

What tools do you use to write the Java Bean??
Give me some details about your problem, maybe I can help you!!

banbooca · 发表于 2002-7-12 08:33

post some details here and u may get help......

Yiben · 发表于 2002-7-12 08:53

I want to create a counter for our web site and select some user information like how many pages the user visit, session time, etc..., then store the information to database.

I have a JSP page that deployes a JavaBean, the simple counter page is working, but when I want to connect to database, system gave me "500 error message".

I've never touched JavaBean, that's why I can't find the problem. Thanks for all the replying.

Yiben · 发表于 2002-7-12 09:14

That's the error message I got:

Error:500
Internal Servlet Error:

javax.servlet.ServletException: Cannot create bean of class count.accessdata
...

oiioiio · 发表于 2002-7-12 09:36

I suggest you check your database connection part.
possible places: 1.configuration of the jsp engine. 2. jdbc driver working or not.

Good luck

Yiben · 发表于 2002-7-12 09:43

I'm trying to see the JDBC is working or not

oiioiio · 发表于 2002-7-12 09:49

Do you throw exception from the constructor of the problem bean?

Yiben · 发表于 2002-7-12 09:53

Yes, I did, here are the codes:

try {
// Load mySQL JDBC driver
Class.forName("org.gjt.mm.mysql.Driver");
}
catch(java.lang.ClassNotFoundException e) {
System.err.println("mydb(): " + e.getMessage());
}

Is that a way to throw exception?