Package sk.iway.iwcm

Class SetCharacterEncodingFilter

java.lang.Object

org.springframework.web.filter.GenericFilterBean

org.springframework.web.filter.OncePerRequestFilter

sk.iway.iwcm.SetCharacterEncodingFilter

All Implemented Interfaces:

javax.servlet.Filter, org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanNameAware, org.springframework.beans.factory.DisposableBean, org.springframework.beans.factory.InitializingBean, org.springframework.context.EnvironmentAware, org.springframework.core.env.EnvironmentCapable, org.springframework.web.context.ServletContextAware

public class SetCharacterEncodingFilter
extends org.springframework.web.filter.OncePerRequestFilter

Example filter that unconditionally sets the character encoding to be used in parsing the incoming request to a value specified by the encoding filter initialization parameter in the web app deployment descriptor (/WEB-INF/web.xml). This filter could easily be extended to be more intelligent about what character encoding to set, based on characteristics of the incoming request (such as the values of the Accept-Language and User-Agent headers, or a value stashed in the current user's session).

Field Summary

Fields

Modifier and Type	Field	Description
protected static String	encoding	The default character encoding to set for requests that pass through this filter.
static final String	PDF_PRINT_PARAM

Fields inherited from class org.springframework.web.filter.OncePerRequestFilter

ALREADY_FILTERED_SUFFIX

Fields inherited from class org.springframework.web.filter.GenericFilterBean

logger

Constructor Summary

Constructors

Constructor	Description
SetCharacterEncodingFilter()

Method Summary

Modifier and Type	Method	Description
void	destroy()	Take this filter out of service.
void	doFilterInternal(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, javax.servlet.FilterChain chain)	Select and set (if specified) the character encoding to be used to interpret request parameters for this request.
static RequestBean	getCurrentRequestBean()
static String	getEncoding()
static javax.persistence.EntityManager	getEntityManager()	Vrati EntityManager pre defaultny nazov DB spojenia ("iwcm")
static javax.persistence.EntityManager	getEntityManager(String dbName)	Vrati EntityManager pre zadany nazov DB spojenia (v povodnom JPA to je persistenceUnit)
void	initFilterBean()	Place this filter into service.
static void	printDbErrorMessage(String path, javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse res)
static void	registerDataContext(javax.servlet.http.HttpServletRequest request)
static void	registerDataContext(javax.servlet.ServletRequest req)	Zaregistruje aktualny request ako RequestBean, je to public kvoli tomu, ze po prechode do 404 stranky sa filter ukonci a context removne Vzdy je nasledne potrebne volat unregisterDataContext pre vycistenie hash tabulky!!
static String	selectEncoding(javax.servlet.ServletRequest request)	Select an appropriate character encoding to be used, based on the characteristics of the current request and/or filter initialization parameters.
static void	setCommonHeaders(javax.servlet.http.HttpServletResponse res, javax.servlet.http.HttpServletRequest req)	Nastavi secutiry hlavicky na response
static void	unRegisterDataContext()	Odregistrovanie RequestBeanu, musi sa volat ak zavolate register (napr.

Methods inherited from class org.springframework.web.filter.OncePerRequestFilter

doFilter, doFilterNestedErrorDispatch, getAlreadyFilteredAttributeName, isAsyncDispatch, isAsyncStarted, shouldNotFilter, shouldNotFilterAsyncDispatch, shouldNotFilterErrorDispatch

Methods inherited from class org.springframework.web.filter.GenericFilterBean

addRequiredProperty, afterPropertiesSet, createEnvironment, getEnvironment, getFilterConfig, getFilterName, getServletContext, init, initBeanWrapper, setBeanName, setEnvironment, setServletContext

Methods inherited from class java.lang.Object

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

Field Details

encoding

protected static String encoding

The default character encoding to set for requests that pass through this filter.

PDF_PRINT_PARAM

public static final String PDF_PRINT_PARAM

See Also:

• Constant Field Values

Constructor Details

SetCharacterEncodingFilter

public SetCharacterEncodingFilter()

Method Details

destroy

public void destroy()

Take this filter out of service.

Specified by:

destroy in interface org.springframework.beans.factory.DisposableBean

Specified by:

destroy in interface javax.servlet.Filter

Overrides:

destroy in class org.springframework.web.filter.GenericFilterBean

registerDataContext

public static void registerDataContext(javax.servlet.ServletRequest req)

Zaregistruje aktualny request ako RequestBean, je to public kvoli tomu, ze po prechode do 404 stranky sa filter ukonci a context removne Vzdy je nasledne potrebne volat unregisterDataContext pre vycistenie hash tabulky!!

Parameters:

req -

registerDataContext

public static void registerDataContext(javax.servlet.http.HttpServletRequest request)

unRegisterDataContext

public static void unRegisterDataContext()

Odregistrovanie RequestBeanu, musi sa volat ak zavolate register (napr. v 404 stranke)

printDbErrorMessage

public static void printDbErrorMessage(String path,
 javax.servlet.http.HttpServletRequest request,
 javax.servlet.http.HttpServletResponse res)
                                throws IOException

Throws:

IOException

doFilterInternal

public void doFilterInternal(javax.servlet.http.HttpServletRequest request,
 javax.servlet.http.HttpServletResponse response,
 javax.servlet.FilterChain chain)
                      throws IOException,
javax.servlet.ServletException

Select and set (if specified) the character encoding to be used to interpret request parameters for this request.

Specified by:

doFilterInternal in class org.springframework.web.filter.OncePerRequestFilter

Parameters:

request - The servlet request we are processing

chain - The filter chain we are processing

response - Description of the Parameter

Throws:

IOException - if an input/output error occurs

javax.servlet.ServletException - if a servlet error occurs

setCommonHeaders

public static void setCommonHeaders(javax.servlet.http.HttpServletResponse res,
 javax.servlet.http.HttpServletRequest req)

Nastavi secutiry hlavicky na response

Parameters:

res -

req -

initFilterBean

public void initFilterBean()
                    throws javax.servlet.ServletException

Place this filter into service.

Overrides:

initFilterBean in class org.springframework.web.filter.GenericFilterBean

Throws:

javax.servlet.ServletException - Description of the Exception

selectEncoding

public static String selectEncoding(javax.servlet.ServletRequest request)

Select an appropriate character encoding to be used, based on the characteristics of the current request and/or filter initialization parameters. If no character encoding should be set, return null .

The default implementation unconditionally returns the value configured by the encoding initialization parameter for this filter.

Parameters:

request - The servlet request we are processing

Returns:

Description of the Return Value

getEncoding

public static String getEncoding()

getCurrentRequestBean

public static RequestBean getCurrentRequestBean()

getEntityManager

public static javax.persistence.EntityManager getEntityManager(String dbName)

Vrati EntityManager pre zadany nazov DB spojenia (v povodnom JPA to je persistenceUnit)

Parameters:

dbName - - nazov DB spojenia

Returns:

EntityManager alebo null, ak pre DB spojenie neexistuje EntityManagerFactory

getEntityManager

public static javax.persistence.EntityManager getEntityManager()

Vrati EntityManager pre defaultny nazov DB spojenia ("iwcm")

Returns:

an @EntityManager