Now I don't understand it too - a classic case of 'I don't see the forest cause
of all the trees'. Thanks for your clarification & patience!
EDIT: i just saw normans post while editing mine - so i post my solution, feel
free to integrate / modify it:
The filterclass:
public class UrlRewriteFilter implements Filter {
|
| private FilterConfig filterConfig;
| private String[] variableNames;
| private String[] delimiters;
| private String targetUrl;
|
| public void init(FilterConfig filterConfig) throws ServletException {
| this.filterConfig = filterConfig;
| this.targetUrl = filterConfig.getInitParameter("target");
| String pattern = "#\\{[^}]+}";
| String configString = filterConfig.getInitParameter("pattern");
| Pattern p = Pattern.compile(pattern);
| Matcher m = p.matcher(configString);
|
| List<String> variableNames = new ArrayList<String>();
| while(m.find()) {
| variableNames.add(configString.substring(m.start()+2,
m.end()-1));
| }
| this.variableNames = variableNames.toArray(new
String[variableNames.size()]);
| this.delimiters = configString.split(pattern);
| }
|
| public void doFilter(ServletRequest servletRequest, ServletResponse
servletResponse, FilterChain filterChain) throws IOException, ServletException {
| HttpServletRequest httpRequest = (HttpServletRequest)
servletRequest;
| String request = httpRequest.getRequestURI();
|
| int start;
| int end = request.indexOf(delimiters[0]);
| for(int i=0; i<variableNames.length; i++) {
|
| start = end + delimiters[ i ].length();
| end = request.indexOf(delimiters[i+1], start);
| servletRequest.setAttribute(variableNames,
request.substring(start, end));
| }
|
filterConfig.getServletContext().getRequestDispatcher(targetUrl).forward(servletRequest,
servletResponse);
| }
|
| public void destroy() {;
|
| }
The config in web.xml:
<filter>
| <filter-name>UrlRewriteFilter</filter-name>
| <filter-class>com.example.UrlRewriteFilter</filter-class>
| <init-param>
| <param-name>pattern</param-name>
|
<param-value>/products/#{categoryId}/#{productId}.xhtml</param-value>
| </init-param>
| <init-param>
| <param-name>target</param-name>
| <param-value>/showProduct.xhtml</param-value>
| </init-param>
| </filter>
|
| <filter-mapping>
| <filter-name>UrlRewriteFilter</filter-name>
| <url-pattern>/products/*</url-pattern>
| </filter-mapping>
The bean that loads the product is the one above and the jsf is trivial.
With a configuration like this a URL like
http://www.example.com/products/cars/123.xhtml is mapped to
http://www.example.com/showProducts.xhtml?categoryId=cars&productId=123 Note
that the request variables are attributes not parameteres therefore
@RequestParameter doesn't work.
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http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3988547#3988547
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