Eclipse, MYSQL, jdbc, tomcat are all installed, under the program

unknown column 'chengang' in 'field list'

He said that there is no chengang column in it, which may mean that there is no chengang field in the table.

Configure the MySQL data source custom-wms

The database name is: test

Username: test

Password: password

Port: 3306

Login character set: GBK

Place the MySQL driver.

Locations such as: tomcat6 tomcat6 lib.

You first write a console program and learn to connect to the database.

You need to set up the data source in the management tool.

When I use sqlservel, it's also the DAO layer, no problem. And then there was a problem when it came to JSP.,I guess it's the same friend fiber.,There should be a spine in the mysql driver.。 DLL dynamic link library file, you copy this file into your jdk to try.

It's the source code from the Internet again.,Go find a JSP book and take a look.。

The configuration of the environment has not been figured out, and it has not been withdrawn.

Even if you figure out the environment configuration and the connection to the database, you still have to figure it out.

Take a moment and check out the tutorial. It's not hard.

Upstairs was right.

You should also understand the difficulty of beginners! That's not how it came about.

Your XMS and XMX settings are too small, just make them bigger!

1.See if your JDBC driver package is complete; 2.See if your database connection statement is correct. For example, whether the database name is correct. Why don't you have a port number in your cn. The default port number of MySQL is 1433;

3.See if your database service and listener are started.

: Didn't it prompt you? Didn't find it.

Did your bag get in?

Another 2 packs are needed com... and pool...Those 2 packs. Your own project is also required.

Import the package above.

%@ page import=

This sentence: <%page import="Stupid"

When importing, the brigade collapses to dismantle the file circle and add quotation marks.

Basically, if you want to make pages, you can use the DreamWeaer CS4 SVN plugin and it's better to learn jQuery Extjs or something.