Improve issue#5, Suppress noisy ESAPI messages

src/main/java/org/t246osslab/easybuggy/core/listeners/InitializationListener.java

@@ -0,0 +1,39 @@
+package org.t246osslab.easybuggy.core.listeners;
+
+import java.io.OutputStream;
+import java.io.PrintStream;
+
+import javax.servlet.ServletContextEvent;
+import javax.servlet.ServletContextListener;
+import javax.servlet.annotation.WebListener;
+
+import org.owasp.esapi.ESAPI;
+
+@WebListener
+public class InitializationListener implements ServletContextListener {
+    public void contextInitialized(ServletContextEvent event) {
+
+        /*
+         * Suppress noisy messages output by the ESAPI library. For more detail:
+         * https://stackoverflow.com/questions/45857064/how-to-suppress-messages-output-by-esapi-library
+         */
+        try {
+            PrintStream original = System.out;
+            PrintStream out = new PrintStream(new OutputStream() {
+                public void write(int b) {
+                    // Do nothing
+                }
+            });
+            System.setOut(out);
+            System.setErr(out);
+            ESAPI.encoder();
+            System.setOut(original);
+        } catch (Exception e) {
+            // Do nothing
+        }
+    }
+
+    @Override
+    public void contextDestroyed(ServletContextEvent sce) {
+    }
+}