Package ru.vyarus.guicey.spa.filter

Class SpaRoutingFilter

java.lang.Object

ru.vyarus.guicey.spa.filter.SpaRoutingFilter

All Implemented Interfaces:

jakarta.servlet.Filter

public class SpaRoutingFilter
extends Object
implements jakarta.servlet.Filter

Filter must be mapped to assets servlet, serving spa application. Bypass all calls to servlet, but if servlet returns 404, tries to redirect to application main page.

This is important to properly handle html5 client routing (without hashbang).

In order to route, filter checks request accept header: if it's compatible with "text/html" - routing is performed. If not, 404 error sent. Also, regex pattern is used to prevent routing (for example, for html templates). This is important for all other assets, which absence must be indicated.

Since:

02.04.2017

Constructor Summary

Constructors

Constructor	Description
SpaRoutingFilter(String target, String noRedirectRegex)	Create SPA filter.

Method Summary

Modifier and Type	Method	Description
void	destroy()
void	doFilter(jakarta.servlet.ServletRequest servletRequest, jakarta.servlet.ServletResponse servletResponse, jakarta.servlet.FilterChain chain)
void	init(jakarta.servlet.FilterConfig filterConfig)

Methods inherited from class java.lang.Object

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

Constructor Details

SpaRoutingFilter

public SpaRoutingFilter(String target,
 String noRedirectRegex)

Create SPA filter.

Parameters:

target - application root

noRedirectRegex - non-SPA routes detection regex

Method Details

init

public void init(jakarta.servlet.FilterConfig filterConfig)
          throws jakarta.servlet.ServletException

Specified by:

init in interface jakarta.servlet.Filter

Throws:

jakarta.servlet.ServletException

doFilter

public void doFilter(jakarta.servlet.ServletRequest servletRequest,
 jakarta.servlet.ServletResponse servletResponse,
 jakarta.servlet.FilterChain chain)
              throws IOException,
jakarta.servlet.ServletException

Specified by:

doFilter in interface jakarta.servlet.Filter

Throws:

IOException

jakarta.servlet.ServletException

destroy

public void destroy()

Specified by:

destroy in interface jakarta.servlet.Filter