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comparison src/nabble/view/lib/NabbleErrorFilter.java @ 0:7ecd1a4ef557

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author Franklin Schmidt <fschmidt@gmail.com>
date Thu, 21 Mar 2019 19:15:52 -0600
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-1:000000000000 0:7ecd1a4ef557
1 package nabble.view.lib;
2
3 import java.io.IOException;
4
5 import javax.servlet.Filter;
6 import javax.servlet.FilterChain;
7 import javax.servlet.FilterConfig;
8 import javax.servlet.ServletException;
9 import javax.servlet.ServletRequest;
10 import javax.servlet.ServletResponse;
11
12 public class NabbleErrorFilter implements Filter {
13 public static final String WORK_AROUND_ERROR_EXCEPTION = "work-around.error.exception";
14
15 public void destroy() { }
16
17 public void doFilter(ServletRequest req, ServletResponse res,
18 FilterChain chain) throws IOException, ServletException {
19
20 try {
21 chain.doFilter(req, res);
22 } catch(Exception e) {
23 req.setAttribute(WORK_AROUND_ERROR_EXCEPTION, e);
24
25 if(e instanceof RuntimeException) {
26 RuntimeException th = (RuntimeException)e;
27 throw th;
28 }
29 else if(e instanceof IOException) {
30 IOException th = (IOException)e;
31 throw th;
32 } else {
33 ServletException th = (ServletException)e;
34 if( MinorServletException.isIn(th) )
35 throw new IOException(th);
36 throw th;
37 }
38 }
39 }
40
41 public void init(FilterConfig arg0) throws ServletException { }
42
43 }