Apache Derby-创建数据库但未找到 [英] Apache Derby - Database created but not found

问题描述

这是我之前的

This is in continuation to my previous question

I'm trying to embed a derby database in my web application. I'm able to embed it, though I am facing glitches. Here's the snapshot of my project structure.

I wonder why class.forName("org.apache.derby.jdbc.EmbededDriver") is throwing exception?

java.lang.ClassNotFoundException: org.apache.derby.jdbc.EmbededDriver

To overcome this, I have used

DriverManager.registerDriver(new org.apache.derby.jdbc.EmbeddedDriver());

Which works well. Why is it so? Also, Where would it create database if coded like this. I cannot spot the database.

connection = DriverManager.getConnection("jdbc:derby:MyDbTest;create=true");

I checked in tomcat webapps and eclipse workspace, I didn't find database.

If given this way, I can spot it.

connection = DriverManager.getConnection("jdbc:derby:E:/MyDbTest;create=true");

解决方案

class.forName("org.apache.derby.jdbc.EmbededDriver")

Threw an exception because there is a 'd' missing from embedded.

See here for information about specifying the location of databases on the file system.

connecting to a file-based derby database

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