Database Reference
In-Depth Information
<html>
<head><title>
Tables in cookbook Database
</title></head>
<body>
<p>
Tables in cookbook database:
</p>
<sql:query
dataSource=
"${conn}"
var=
"rs"
>
SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_SCHEMA = 'cookbook' ORDER BY TABLE_NAME
</sql:query>
<c:forEach
items=
"${rs.rowsByIndex}"
var=
"row"
>
<c:out
value=
"${row[0]}"
/><br
/>
</c:forEach>
</body>
</html>
The
taglib
directives identify which tag libraries the page uses, and the
include
di‐
rective pulls in the code that sets up a data source for accessing the
cookbook
database.
The rest of the script generates the page content.
Assuming that you've installed the
mcb.war
file in your Tomcat server's
webapps
direc‐
tory as described earlier, you should find the
show_tables.jsp
script in the
mcb
subdir‐
ectory. Request it from your browser as follows:
http://localhost:8080/mcb/show_tables.jsp
The JSP script does not produce any
Content-Type:
header explicitly. The JSP engine
produces a default header with a content type of
text/html
automatically.
18.4. Encoding Special Characters in Web Output
Problem
Certain characters are special in web pages and must be encoded if you want to display
them literally. Because database content often contains instances of these characters,
scripts that include query results in web pages should encode those results to prevent
browsers from misinterpreting the information.
Solution
Use the methods provided by your API for performing HTML-encoding and URL-
encoding.
