Added logging exception resolver

Signed-off-by: Andrew DeMaria <lostonamountain@gmail.com>

libresonic-main/src/main/java/org/libresonic/player/spring/LoggingExceptionResolver.java

@@ -0,0 +1,26 @@
+package org.libresonic.player.spring;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import org.libresonic.player.Logger;
+import org.springframework.core.Ordered;
+import org.springframework.web.servlet.HandlerExceptionResolver;
+import org.springframework.web.servlet.ModelAndView;
+
+public class LoggingExceptionResolver implements HandlerExceptionResolver, Ordered {
+
+    private static final Logger logger = Logger.getLogger(LoggingExceptionResolver.class);
+
+    @Override
+    public ModelAndView resolveException(
+            HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e
+    ) {
+        logger.error("Exception occurred", e);
+        return null;
+    }
+
+    @Override
+    public int getOrder() {
+        return Integer.MIN_VALUE;
+    }
+}

libresonic-main/src/main/webapp/WEB-INF/libresonic-servlet.xml

@@ -398,4 +398,5 @@
         <property name="suffix" value=".jsp"/>
     </bean>
 
+    <bean class="org.libresonic.player.spring.LoggingExceptionResolver" />
 </beans>