Package org.apache.hadoop.util

Class ServletUtil

java.lang.Object

org.apache.hadoop.util.ServletUtil

@Private
@Unstable
public class ServletUtil
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field	Description
static java.lang.String	HTML_TAIL

Constructor Summary

Constructors

Constructor	Description
ServletUtil()

Method Summary

Modifier and Type	Method	Description
static java.lang.String	getParameter(javax.servlet.ServletRequest request, java.lang.String name)	Get a parameter from a ServletRequest.
static java.lang.String	getRawPath(javax.servlet.http.HttpServletRequest request, java.lang.String servletName)	Parse the path component from the given request and return w/o decoding.
static java.lang.String	htmlFooter()	HTML footer to be added in the jsps.
static java.io.PrintWriter	initHTML(javax.servlet.ServletResponse response, java.lang.String title)	Initial HTML header.
static long	parseLongParam(javax.servlet.ServletRequest request, java.lang.String param)	parseLongParam.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

HTML_TAIL

public static final java.lang.String HTML_TAIL

Constructor Detail

ServletUtil

public ServletUtil()

Method Detail

initHTML

public static java.io.PrintWriter initHTML(javax.servlet.ServletResponse response,
                                           java.lang.String title)
                                    throws java.io.IOException

Initial HTML header.

Parameters:

response - response.

title - title.

Returns:

PrintWriter.

Throws:

java.io.IOException - raised on errors performing I/O.

getParameter

public static java.lang.String getParameter(javax.servlet.ServletRequest request,
                                            java.lang.String name)

Get a parameter from a ServletRequest. Return null if the parameter contains only white spaces.

Parameters:

request - request.

name - name.

Returns:

get a parameter from a ServletRequest.

parseLongParam

public static long parseLongParam(javax.servlet.ServletRequest request,
                                  java.lang.String param)
                           throws java.io.IOException

parseLongParam.

Parameters:

request - request.

param - param.

Returns:

a long value as passed in the given parameter, throwing an exception if it is not present or if it is not a valid number.

Throws:

java.io.IOException - raised on errors performing I/O.

htmlFooter

public static java.lang.String htmlFooter()

HTML footer to be added in the jsps.

Returns:

the HTML footer.

getRawPath

public static java.lang.String getRawPath(javax.servlet.http.HttpServletRequest request,
                                          java.lang.String servletName)

Parse the path component from the given request and return w/o decoding.

Parameters:

request - Http request to parse

servletName - the name of servlet that precedes the path

Returns:

path component, null if the default charset is not supported