private void printComponentTree(
PrintWriter out, String errorId, FacesContext context, UIComponent comp, int depth) {
for (int i = 0; i < depth; i++) out.print(' ');
boolean isError = false;
if (errorId != null && errorId.equals(comp.getClientId(context))) {
isError = true;
out.print("<span style='color:red'>");
}
out.print("<" + comp.getClass().getSimpleName());
if (comp.getId() != null) out.print(" id=\"" + comp.getId() + "\"");
for (Method method : comp.getClass().getMethods()) {
if (!method.getName().startsWith("get") && !method.getName().startsWith("is")) continue;
else if (method.getParameterTypes().length != 0) continue;
String name;
if (method.getName().startsWith("get")) name = method.getName().substring(3);
else if (method.getName().startsWith("is")) name = method.getName().substring(2);
else continue;
// XXX: getURL
name = Character.toLowerCase(name.charAt(0)) + name.substring(1);
ValueExpression expr = comp.getValueExpression(name);
Class type = method.getReturnType();
if (expr != null) {
out.print(" " + name + "=\"" + expr.getExpressionString() + "\"");
} else if (method.getDeclaringClass().equals(UIComponent.class)
|| method.getDeclaringClass().equals(UIComponentBase.class)) {
} else if (name.equals("family")) {
} else if (String.class.equals(type)) {
try {
Object value = method.invoke(comp);
if (value != null) out.print(" " + name + "=\"" + value + "\"");
} catch (Exception e) {
}
}
}
int facetCount = comp.getFacetCount();
int childCount = comp.getChildCount();
if (facetCount == 0 && childCount == 0) {
out.print("/>");
if (isError) out.print("</span>");
out.println();
return;
}
out.println(">");
if (isError) out.print("</span>");
for (int i = 0; i < childCount; i++) {
printComponentTree(out, errorId, context, comp.getChildren().get(i), depth + 1);
}
for (int i = 0; i < depth; i++) out.print(' ');
if (isError) out.print("<span style='color:red'>");
out.println("</" + comp.getClass().getSimpleName() + ">");
if (isError) out.print("</span>");
}
private boolean sendError(FacesContext context, String lifecycle, Exception e) {
for (Throwable cause = e; cause != null; cause = cause.getCause()) {
if (cause instanceof DisplayableException) {
if (e instanceof RuntimeException) throw (RuntimeException) e;
else throw new FacesException(e);
} else if (cause instanceof ServletException) throw new FacesException(e);
else if (cause instanceof JspException) throw new FacesException(e);
}
ExternalContext extContext = context.getExternalContext();
Object response = extContext.getResponse();
if (!(response instanceof HttpServletResponse)) {
context.renderResponse();
if (e instanceof RuntimeException) throw (RuntimeException) e;
else throw new RuntimeException(e);
}
log.log(Level.WARNING, e.toString(), e);
HttpServletResponse res = (HttpServletResponse) response;
try {
context.renderResponse();
context.responseComplete();
res.setStatus(500, "JSF Exception");
res.setContentType("text/html");
PrintWriter out = res.getWriter();
out.println("<body>");
out.println("<h3>JSF exception detected in " + lifecycle + " phase</h3>");
String msg = e.getMessage();
out.println("<span style='color:red;font:bold'>" + Html.escapeHtml(msg) + "</span><br/>");
out.println("<h3>Context: " + context.getViewRoot() + "</h3>");
out.println("<code><pre>");
String errorId = null;
if (e instanceof FacesException && msg.startsWith("id=")) {
int p = msg.indexOf(' ');
errorId = msg.substring(3, p);
}
printComponentTree(out, errorId, context, context.getViewRoot(), 0);
out.println("</pre></code>");
if (!Alarm.isTest()) {
out.println("<h3>Stack Trace</h3>");
out.println("<pre>");
if (e.getCause() != null) e.getCause().printStackTrace(out);
else e.printStackTrace(out);
out.println("</pre>");
}
out.println("</body>");
// clear, so we don't just loop
Application app = context.getApplication();
ViewHandler view = app.getViewHandler();
UIViewRoot viewRoot = context.getViewRoot();
viewRoot = view.createView(context, viewRoot.getViewId());
context.setViewRoot(viewRoot);
// view.writeState(context); // XXX: no need to output state, but review.
return true;
} catch (IOException e1) {
throw new RuntimeException(e);
}
}