Disable browser cache

Author: saqibmasood

src/main/java/com/groupdocs/ui/servlet/CacheFilter.java

@@ -0,0 +1,22 @@
+package com.groupdocs.ui.servlet;
+
+import javax.servlet.*;
+import javax.servlet.annotation.WebFilter;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+
+@WebFilter("/*")
+public class CacheFilter implements Filter {
+    public void init(FilterConfig config) throws ServletException {
+    }
+
+    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws ServletException, IOException {
+        ((HttpServletResponse) response).setHeader("Cache-Control", "private, no-cache, no-store, must-revalidate, max-age=0, proxy-revalidate, s-maxage=0");
+        ((HttpServletResponse) response).setHeader("Pragma", "no-cache");
+        ((HttpServletResponse) response).setDateHeader("Expires", 0);
+        chain.doFilter(request, response);
+    }
+
+    public void destroy() {
+    }
+}