de.xima.fc.web.common.utils

Class ServletUtils

java.lang.Object

de.xima.fc.web.common.utils.ServletUtils

public final class ServletUtils
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static int	ERR
static org.slf4j.Logger	LOG

Method Summary

Modifier and Type	Method and Description
static Object	checkForDate(Object value) Falls übergebener Wert kein Datums-String im erwarteten Format ist, wird der Original-Wert zurückgegeben, ansonsten das entsprechende java.util.Date.
static SimpleDateFormat	dateFormatter()
static int	getIntParam(String param)
static String	getRequestTrace(javax.servlet.http.HttpServletRequest req) Schreibt Request-Header raus
static int	getUrlIntParam(javax.servlet.http.HttpServletRequest req, int idx) Auslesen eines Int-Parameters aus einer ServletUrl.
static String	getUrlParam(javax.servlet.http.HttpServletRequest req, int idx) Auslesen eines Parameter aus einer ServletUrl.
static void	logRequestTrace(javax.servlet.http.HttpServletRequest req, org.slf4j.Logger logger)
static Map<String,List<String>>	parseForMultipleParameters(javax.servlet.http.HttpServletRequest request, Long limit) Assumes there are no file uploads.
static Map<String,String>	parseForSingleParameters(javax.servlet.http.HttpServletRequest request, Long limit) Assumes there are no file uploads.
static String	pn(String... attribs)
static String	pn2ul(String str)
static String	readJSONFromPayLoad(InputStream is) InputStream in einen String umwandeln.
static void	setAccessControlHeader(javax.servlet.http.HttpServletResponse resp)
static void	setDefaultEncodings(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse resp)
static void	setFormAccessControllHeaders(javax.servlet.http.HttpServletResponse resp)
static void	setFormAccessControllHeaders(javax.servlet.http.HttpServletResponse resp, String allowOrigin)
static void	setNoCacheHeaders(javax.servlet.http.HttpServletResponse resp)
static String	ul2pn(String str)

Methods inherited from class java.lang.Object

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

Field Detail

LOG

public static final org.slf4j.Logger LOG

ERR

public static final int ERR

See Also:

Constant Field Values

Method Detail

getRequestTrace

public static String getRequestTrace(javax.servlet.http.HttpServletRequest req)

Schreibt Request-Header raus

logRequestTrace

public static void logRequestTrace(javax.servlet.http.HttpServletRequest req,
                                   org.slf4j.Logger logger)

getUrlParam

public static String getUrlParam(javax.servlet.http.HttpServletRequest req,
                                 int idx)

Auslesen eines Parameter aus einer ServletUrl. Der Index gibt die Position an, begonnen wird bei 0.
Aufbau der URL: web-app-url/servlet/param0/param1/...

Parameters:

req - HttpServletRequest mit Parameter

idx - Index des Parameters

Returns:

Parameter aus HttpRequest. Wird kein Parameter gefunden wird null zurückgegeben.

getUrlIntParam

public static int getUrlIntParam(javax.servlet.http.HttpServletRequest req,
                                 int idx)

Auslesen eines Int-Parameters aus einer ServletUrl. Weitere Informationen siehe ServletUtils#getParam(req, idx)

getIntParam

public static int getIntParam(String param)

parseForSingleParameters

public static Map<String,String> parseForSingleParameters(javax.servlet.http.HttpServletRequest request,
                                                          Long limit)
                                                   throws org.apache.commons.fileupload.FileUploadException,
                                                          IOException

Assumes there are no file uploads. Reads all parameters from the request, including parameters from a multipart request. In case there are multiple values for a parameter key (eg. http://example.com?foo=bar&foo=baz), only one value is returned. Also handles the case of form encoded requests with different methods such as DELETE or PUT.

Parameters:

request - Request to be parsed

limit - Limit in bytes for a multipart request. Set to 0 or null for no limit.

Returns:

A map of all request parameters, including form parameters from a multipart request.

Throws:

org.apache.commons.fileupload.FileUploadException - When the request is a multipart request and could not be parsed.

IOException - When the body of the HTTP request could not be read.

parseForMultipleParameters

public static Map<String,List<String>> parseForMultipleParameters(javax.servlet.http.HttpServletRequest request,
                                                                  Long limit)
                                                           throws org.apache.commons.fileupload.FileUploadException,
                                                                  IOException

Assumes there are no file uploads. Reads all parameters from the request, including parameters from a multipart request. Also handles the case of form encoded requests with different methods such as DELETE or PUT.

Parameters:

request - Request to be parsed

limit - Limit in bytes for a multipart request. Set to 0 or null for no limit.

Returns:

A map of all request parameters, including form parameters from a multipart request.

Throws:

org.apache.commons.fileupload.FileUploadException - When the request is a multipart request and could not be parsed.

IOException - When the body of the HTTP request could not be read.

readJSONFromPayLoad

public static String readJSONFromPayLoad(InputStream is)

InputStream in einen String umwandeln.

Parameters:

is - InputStream

Returns:

JSON-String aus InputStream, im Fehlerfall wird null zurückgegeben.

setDefaultEncodings

public static final void setDefaultEncodings(javax.servlet.http.HttpServletRequest req,
                                             javax.servlet.http.HttpServletResponse resp)
                                      throws UnsupportedEncodingException

Throws:

UnsupportedEncodingException

setNoCacheHeaders

public static final void setNoCacheHeaders(javax.servlet.http.HttpServletResponse resp)

setFormAccessControllHeaders

public static final void setFormAccessControllHeaders(javax.servlet.http.HttpServletResponse resp)

setFormAccessControllHeaders

public static final void setFormAccessControllHeaders(javax.servlet.http.HttpServletResponse resp,
                                                      String allowOrigin)

setAccessControlHeader

public static final void setAccessControlHeader(javax.servlet.http.HttpServletResponse resp)

pn

public static final String pn(String... attribs)

Returns:

Die übergebene Attributkette in Punktnotation, bspw "attribs0.attribs1.attribs2".

pn2ul

public static final String pn2ul(String str)

Returns:

Der übergebene String, wobei Punkte('.') mit Unterstrichen('_') erstetzt werden.

ul2pn

public static final String ul2pn(String str)

Returns:

Der übergebene String, wobei Unterstriche('_') mit Punkten('.') erstetzt werden.

dateFormatter

public static SimpleDateFormat dateFormatter()

Returns:

SimpleDateFormat auf Basis des Standardformats für Datumsangaben

checkForDate

public static Object checkForDate(Object value)

Falls übergebener Wert kein Datums-String im erwarteten Format ist, wird der Original-Wert zurückgegeben, ansonsten das entsprechende java.util.Date.