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Legacy Examples

Chapter 8 Legacy Servlet and JSP Configuration 93

If a servlet uses the ServletRequest.getParameter method to retrieve values in

form fields having non-UTF-8 characters, the

parameterEncoding property must

be set to

auto (the default) or responseCT in the contexts.properties file.

Otherwise, the values extracted by the

getParameter method are zeros or are

undefined. For more information see “ServletRequest.getParameter,” on page 74.

The

parameterEncoding property setting applies to how a servlet processes

parameters after the iPlanet Web Server receives a request. The URI that is sent to

the server must consist of only the standard ASCII set, especially if the request

method is GET. All other characters must be encoded.

For example, to encode a backslash, you would replace the backslash with a

followed by the hexadecimal number corresponding to the backslash in the ASCII

character set,

5c. Therefore, vw\xyz becomes vw%5cxyz. For more information

about characters that must be encoded, see “parameter-encoding,” on page 22.

singleClassLoader

By default, the singleClassLoader property is false, which means that each

servlet is loaded in a different class loader, even if the servlets share a context. This

makes it difficult for two servlets to access each other’s static class members. To

load all servlets within a context in the same class loader, set the

singleClassLoader property to true.

Servlet reloading (which occurs when

.class or .jsp files are changed) does not

work when

singleClassLoader=true.

singleClassLoader=true, RequestDispatcher.forward calls to JSPs do not

work unless you add the

ClassCache directory to the context.global.classpath

line in

contexts.properties. For example:

context.global.singleClassLoader=true

context.global.classpath=server_root/https-server_id/ClassCache

Legacy Examples

iPlanet Web Server 6.0 comes with a set of legacy example servlets and JSP files.

You can find them at the following location:

server_root

/plugins/servlets/examples/legacy

responseCT Tries to figure out the proper encoding from the response content type

if it is available. Otherwise, the system default encoding is used.

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