Java & Local Databases

Question

TL DR; Want some Java help with connecting to a truly local database ( no access to server tech ), or if you can whip up code, that will work. All it has to do is query the

Answer 1

As a follow up to Oscar...

Here's a simple "Type in the SQL" JSP page, using JSTL (Java Standard Tag Library) tags.

All you need to make this work is toss in the derby.jar library.

Download tomcat from Apache.

Download derby from Apache

cd $TOMCAT_HOME/webapps

mkdir yourapp

cd yourapp

Take the following and put it in index.jsp:

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<%@ taglib prefix="sql" uri="http://java.sun.com/jsp/jstl/sql"%>




    
        
        
    
    
        
Welcome to Derby SQL
        
        

            SQL Text:
            
            

            
            
            
            
        
        
            
            Executing: ${param.sql}
            

            
            

            
                
                    
                    ${param.sql}
                    
                    Result = ${result}
                
                
                    
                    ${param.sql}
                    

                    
                                
                            
                                    
                
            
        
    

mkdir WEB-INF

take the following and put it in web.xml

    
        index.jsp
    

mkdir WEB-INF/lib

copy the derby.jar in to WEB-INF/lib

You should now have 3 files:

$TOMCAT_HOME/webapps/yourapp/index.jsp $TOMCAT_HOME/webapps/yourapp/WEB-INF/web.xml $TOMCAT_HOME/webapps/yourapp/WEB-INF/lib/derby.jar

Now fire up Tomcat, and point your browser at http://localhost:8080/yourapp

And you'll get this little box to type SQL in to.

Derby will create the DB for you automagically.

With the JSTL and SQL tags you can do all you want from straight JSP.

Is it "best practice" to do everything in JSP? No.

Does it work? Yes.

Is it practical? Yes.

You can always change it later.