Added from pizza-service as they are generic enough

Signed-off-by:Roland Häder <roland@mxchange.org>

diff --git a/src/org/mxchange/jsfcore/filter/servlet/BaseServletFilter.java b/src/org/mxchange/jsfcore/filter/servlet/BaseServletFilter.java
new file mode 100644 (file)
index 0000000..24bf76e
--- /dev/null
+++ b/src/org/mxchange/jsfcore/filter/servlet/BaseServletFilter.java
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2015 Roland Haeder
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.mxchange.jsfcore.filter.servlet;
+
+import java.text.MessageFormat;
+import javax.servlet.Filter;
+import javax.servlet.FilterConfig;
+import javax.servlet.ServletException;
+import org.mxchange.jcore.BaseFrameworkSystem;
+
+/**
+ * A general servlet filter class. If you need to override init() or
+ * destroy() please always call the super method first and handle over all
+ * parameter.
+ *
+ * @author Roland Haeder
+ */
+public abstract class BaseServletFilter extends BaseFrameworkSystem implements Filter {
+       /**
+        * Configuration instance
+        */
+       private FilterConfig config;
+
+       /**
+        * Destroys this filter
+        */
+       @Override
+       public void destroy () {
+               // Unset config instance
+               this.setConfig(null);
+       }
+
+       /**
+        * Initializes this filter
+        *
+        * @param filterConfig Filter configuration
+        * @throws ServletException 
+        */
+       @Override
+       public void init (final FilterConfig filterConfig) throws ServletException {
+               // Trace message
+               this.getLogger().trace(MessageFormat.format("filterConfig={0} - CALLED!", filterConfig)); //NOI18N
+
+               // Set config instance
+               this.setConfig(filterConfig);
+
+               // Trace message
+               this.getLogger().trace("EXIT!"); //NOI18N
+       }
+
+       /**
+        * Configuration instance
+        * @return the config
+        */
+       protected final FilterConfig getConfig () {
+               return this.config;
+       }
+
+       /**
+        * Configuration instance
+        * @param config the config to set
+        */
+       private void setConfig (final FilterConfig config) {
+               this.config = config;
+       }
+}

diff --git a/src/org/mxchange/jsfcore/filter/servlet/utf8/Utf8ServletFilter.java b/src/org/mxchange/jsfcore/filter/servlet/utf8/Utf8ServletFilter.java
new file mode 100644 (file)
index 0000000..949c08e
--- /dev/null
+++ b/src/org/mxchange/jsfcore/filter/servlet/utf8/Utf8ServletFilter.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2015 Roland Haeder
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.mxchange.jsfcore.filter.servlet.utf8;
+
+import java.io.IOException;
+import java.text.MessageFormat;
+import javax.servlet.Filter;
+import javax.servlet.FilterChain;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import org.mxchange.jsfcore.filter.servlet.BaseServletFilter;
+
+/**
+ * A HTTP filter for setting UTF-8 character encoding.
+ *
+ * @author Roland Haeder
+ */
+public class Utf8ServletFilter extends BaseServletFilter implements Filter {
+       /**
+        * Filter to set UTF-8 encoding
+        *
+        * @param request ServletRequest instance
+        * @param response ServletResponse instance
+        * @param chain FilterChain instance
+        * @throws IOException
+        * @throws ServletException
+        */
+       @Override
+       public void doFilter (final ServletRequest request, final ServletResponse response, final FilterChain chain) throws IOException, ServletException {
+               // Trace message
+               this.getLogger().trace(MessageFormat.format("request={0},response={1},chain={2} - CALLED!", request, response, chain)); //NOI18N
+
+               // Call super method
+               chain.doFilter(request, response);
+
+               // Set response/request both to UTF-8
+               request.setCharacterEncoding("UTF-8"); //NOI18N
+               response.setCharacterEncoding("UTF-8"); //NOI18N
+
+               // Trace message
+               this.getLogger().trace("EXIT!"); //NOI18N
+       }
+}