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Java Servlet Filter

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Assalamualaikum Warohmatullah,

Kali ini saya akan posting mengenai Java Servlet Filter
Sebelumnya kita bahas mengenai Filter, apa itu Filter ?

Filter adalah sebuah komponen yang dapat menangani request atau response yang harus atau tidak harus dilakukan/diterima oleh client. Secara normal, filter digunakan untuk membungkus dan memanipulasi request, response, atau nilai header sebelum dan setelah eksekusi target.

Mari kita langsung saja untuk mulai membuat aplikasinya,
sebelumnya disini saya menggunakan tools neatbean sebagai editor dari java dan tomcat sebagai web service nya.

Langkah awal yang harus dilakukan adalah tentu saja membuka netbean dan membuat project baru.
Buatlah project dengan nama filterlogin, dan di bawah ini merupakan struktur pembuatan java servlet filter yang akan kita buat.


Selanjutnya, silahkan ubah isi yang file yang ada seperti struktur diatas. 

 index.html


LoginServlet.java

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.RequestDispatcher; 
import javax.servlet.ServletException;
import javax.servlet.http.Cookie; 
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession; 

/**
 *
 * @author siti sadiah
 */
public class LoginServlet extends HttpServlet {
     private static final long serialVersionUID = 1L;
     private final String userID = "sadiah";
     private final String password = "005131121096"; 

    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            /* TODO output your page here. You may use following sample code. */
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet LoginServlet</title>");            
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet LoginServlet at " + request.getContextPath() + "</h1>");
            out.println("</body>");
            out.println("</html>");
        } finally {            
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
       // processRequest(request, response);
        String user = request.getParameter("user");
        String pwd = request.getParameter("pwd");
        
        if (userID.equals(user) && password.equals(pwd)) { 
        HttpSession session = request.getSession();
        session.setAttribute("user", "Pankaj");
        //setting session to expiry in 30 mins 88 
        session.setMaxInactiveInterval(30 * 60);
        Cookie userName = new Cookie("user", user); 
        userName.setMaxAge(30 * 60);
        response.addCookie(userName);
        response.sendRedirect("LoginSuccess.jsp");
        } else {
            RequestDispatcher rd = getServletContext().getRequestDispatcher("/index.html");
            PrintWriter out = response.getWriter();
            out.println("<font color=red>Either user name or password is wrong.</font>"); 
            rd.include(request, response);
        } 
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}


LoginSuccess.jsp

<%--
    Document   : LoginSuccess
    Created on : 14-Jan-2015, 21:04:02
    Author     : Siti Sadiah
--%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>
         <%
         //allow access only if session exists
         String user = (String) session.getAttribute("user");
         String userName = null;
         String sessionID = null;
         Cookie[] cookies = request.getCookies();
         if (cookies != null) {
            for (Cookie cookie : cookies) {
                if (cookie.getName().equals("user")) {
                    userName = cookie.getValue();
                }
                if (cookie.getName().equals("JSESSIONID")) {
                    sessionID = cookie.getValue();
                }
            }
         }
         %>
         <h3>Hi <%=userName%>, Login successful. Your Session ID=<%=sessionID%></h3>
         <br>
         User=<%=user%>
         <br>
         <a href="CheckoutPage.jsp">Checkout Page</a>
         <form action="LogoutServlet" method="post">
             <input type="submit" value="Logout" >
         </form>
    </body>
</html>

Checkout.jsp

<%--
    Document   : CheckoutPage
    Created on : 14-Jan-2015, 21:12:10
    Author     : Siti Sadiah
--%>

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>
        <%
        String userName = null;
        String sessionID = null;
        Cookie[] cookies = request.getCookies();
        if (cookies != null) {
            for (Cookie cookie : cookies) {
                if (cookie.getName().equals("user")) {
                    userName = cookie.getValue();
                }
            }
        }
        %>
        <h3>Hi <%=userName%>, do the checkout.</h3>
        <br>
        <form action="LogoutServlet" method="post">
            <input type="submit" value="Logout" >
        </form>
    </body>
</html>


LogoutServlet.java

 /*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 *
 * @author mcs
 */
public class LogoutServlet extends HttpServlet {

    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            /* TODO output your page here. You may use following sample code. */
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet LogoutServlet</title>");          
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet LogoutServlet at " + request.getContextPath() + "</h1>");
            out.println("</body>");
            out.println("</html>");
        } finally {          
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
         Cookie[] cookies = request.getCookies();
         if (cookies != null) {
             for (Cookie cookie : cookies) {
                 if (cookie.getName().equals("JSESSIONID")) {
                     System.out.println("JSESSIONID=" + cookie.getValue());
                     break;
                 }
             }
         }
         //invalidate the session if exists
         HttpSession session = request.getSession(false);
         System.out.println("User=" + session.getAttribute("user"));
         if (session != null) {
             session.invalidate();
         }
         response.sendRedirect("index.html");
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}


RequestLoggingFilter.java

/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/

import java.io.IOException;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.Enumeration;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;


public class RequestLoggingFilter implements Filter {

    private static final boolean debug = true;

    // The filter configuration object we are associated with. If
    // this value is null, this filter instance is not currently
    // configured.
    private FilterConfig filterConfig = null;
    //private ServletContext context;

    public RequestLoggingFilter() {
    }

    private void doBeforeProcessing(ServletRequest request, ServletResponse response)
    throws IOException, ServletException {
        if (debug) {
            log("RequestLoggingFilter:DoBeforeProcessing");
        }

        HttpServletRequest req = (HttpServletRequest) request;
        Enumeration<String> params = req.getParameterNames();
        while (params.hasMoreElements()) {
        String name = params.nextElement();
        String value = request.getParameter(name);
        log(req.getRemoteAddr() + "::Request Params::{" + name + "=" + value + "}");

    }

    Cookie[] cookies = req.getCookies();
    if (cookies != null) {
        for (Cookie cookie : cookies) {
            log(req.getRemoteAddr() + "::Cookie::{" + cookie.getName() + "," + cookie.getValue() + "}");
        }
    }
    // Write code here to process the request and/or response before
    // the rest of the filter chain is invoked.
    // For example, a logging filter might log items on the request object,
    // such as the parameters.
    /*
    for (Enumeration en = request.getParameterNames(); en.hasMoreElements(); ) {
    String name = (String)en.nextElement();
    String values[] = request.getParameterValues(name);
    int n = values.length;
    StringBuffer buf = new StringBuffer();
    buf.append(name);
    buf.append("=");
    for(int i=0; i < n; i++) {
    buf.append(values[i]);
    if (i < n-1)
    buf.append(",");
    }
    log(buf.toString());
    }
    */
    }

    private void doAfterProcessing(ServletRequest request, ServletResponse response)
    throws IOException, ServletException {
        if (debug) {
            log("RequestLoggingFilter:DoAfterProcessing");
        }

    // Write code here to process the request and/or response after
    // the rest of the filter chain is invoked.
    // For example, a logging filter might log the attributes on the
    // request object after the request has been processed.
    /*
    for (Enumeration en = request.getAttributeNames(); en.hasMoreElements(); ) {
    String name = (String)en.nextElement();
    Object value = request.getAttribute(name);
    log("attribute: " + name + "=" + value.toString());

    }
    */
    // For example, a filter might append something to the response.
    /*
    PrintWriter respOut = new PrintWriter(response.getWriter());
    respOut.println("<P><B>This has been appended by an intrusive filter.</B>");
    */
    }

    /**
    *
    * @param request The servlet request we are processing
    * @param response The servlet response we are creating
    * @param chain The filter chain we are processing
    *
    * @exception IOException if an input/output error occurs
    
    * @exception ServletException if a servlet error occurs
    */
    public void doFilter(ServletRequest request, ServletResponse response,
    FilterChain chain) throws IOException, ServletException {

        if (debug) {
            log("RequestLoggingFilter:doFilter()");
        }

        doBeforeProcessing(request, response);

        Throwable problem = null;
        try {
            chain.doFilter(request, response);
        } catch (Throwable t) {
        // If an exception is thrown somewhere down the filter chain,
        // we still want to execute our after processing, and then
        // rethrow the problem after that.
            problem = t;
            t.printStackTrace();
        }

        doAfterProcessing(request, response);

        // If there was a problem, we want to rethrow it if it is
        // a known type, otherwise log it.
        if (problem != null) {
            if (problem instanceof ServletException) {
                throw (ServletException) problem;
            }
            if (problem instanceof IOException) {
                throw (IOException) problem;
            }
            sendProcessingError(problem, response);
        }
    }

    /**
    * Return the filter configuration object for this filter.
    */
    public FilterConfig getFilterConfig() {
        return (this.filterConfig);
    }

    /**
    * Set the filter configuration object for this filter.
    *
    * @param filterConfig The filter configuration object
    */
    public void setFilterConfig(FilterConfig filterConfig) {
        this.filterConfig = filterConfig;
    }

    /**
    * Destroy method for this filter
    */
    public void destroy() {
    }

    /**
    * Init method for this filter
    */

    public void init(FilterConfig filterConfig) {
        this.filterConfig = filterConfig;
        if (filterConfig != null) {
            if (debug) {
                log("RequestLoggingFilter:Initializing filter");
            }
        }
    }

    /**
    * Return a String representation of this object.
    */
    @Override
    public String toString() {
        if (filterConfig == null) {
            return ("RequestLoggingFilter()");
        }
        StringBuffer sb = new StringBuffer("RequestLoggingFilter(");
        sb.append(filterConfig);
        sb.append(")");
        return (sb.toString());
    }

    private void sendProcessingError(Throwable t, ServletResponse response) {
        String stackTrace = getStackTrace(t);

        if (stackTrace != null && !stackTrace.equals("")) {
            try {
                response.setContentType("text/html");
                PrintStream ps = new PrintStream(response.getOutputStream());
                PrintWriter pw = new PrintWriter(ps);
                pw.print("<html>\n<head>\n<title>Error</title>\n</head>\n<body>\n");

                // PENDING! Localize this for next official release
                pw.print("<h1>The resource did not process correctly</h1>\n<pre>\n");
                pw.print(stackTrace);
                pw.print("</pre></body>\n</html>"); //NOI18N
                pw.close();
                ps.close();
                response.getOutputStream().close();
            } catch (Exception ex) {
            }
        } else {
            try {
                PrintStream ps = new PrintStream(response.getOutputStream());
                t.printStackTrace(ps);
                ps.close();
                response.getOutputStream().close();
            } catch (Exception ex) {
            }
        }
    }

    public static String getStackTrace(Throwable t) {
        String stackTrace = null;
            try {
                StringWriter sw = new StringWriter();
                PrintWriter pw = new PrintWriter(sw);
                t.printStackTrace(pw);
                pw.close();
                sw.close();
                stackTrace = sw.getBuffer().toString();

            } catch (Exception ex) {
            }
    return stackTrace;
    }

    public void log(String msg) {
        filterConfig.getServletContext().log(msg);
    }

}

AuthenticationFilter.java

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

import java.io.IOException;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig; 
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 *
 * @author sadiah
 */
public class AuthenticationFilter extends HttpServlet {

    private static final boolean debug = true; 
    
    // The filter configuration object we are associated with.  If 
    // this value is null, this filter instance is not currently 
    // configured. 
    private FilterConfig filterConfig = null; 

    public AuthenticationFilter() {
    } 
    
    private void doBeforeProcessing(ServletRequest request, ServletResponse response)
        throws IOException, ServletException { 
        if (debug) { 
           log("AuthenticationFilter:DoBeforeProcessing"); 
        }
        // Write code here to process the request and/or response before 
        // the rest of the filter chain is invoked. 
        // For example, a logging filter might log items on the request object, 
        // such as the parameters. 
        /* 
        for (Enumeration en = request.getParameterNames(); 
        en.hasMoreElements(); ) { 
        String name = (String)en.nextElement(); 
        String values[] = request.getParameterValues(name); 
        int n = values.length; 
        StringBuffer buf = new StringBuffer(); 
        buf.append(name); 
        buf.append("="); 
        for(int i=0; i < n; i++) { 
        buf.append(values[i]); 
        if (i < n-1) 
        buf.append(","); 
        } 
        log(buf.toString()); 
        }
        */ 
    }
    
    private void doAfterProcessing(ServletRequest request, ServletResponse response) 
        throws IOException, ServletException { 
        if (debug) { 
            log("AuthenticationFilter:DoAfterProcessing"); 
         }
        
        // Write code here to process the request and/or response after 
        // the rest of the filter chain is invoked. 
        // For example, a logging filter might log the attributes on the 
        // request object after the request has been processed. 
        /* 
        for (Enumeration en = request.getAttributeNames(); en.hasMoreElements(); ) { 
        String name = (String)en.nextElement(); 
        Object value = request.getAttribute(name); 
        log("attribute: " + name + "=" + value.toString()); 

        } 
        */ 
        // For example, a filter might append something to the response.
        /* 
        PrintWriter respOut = new PrintWriter(response.getWriter());
        respOut.println("<P><B>This has been appended by an intrusive filter.</B>"); 
        */ 
    } 
    
    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
     public void doFilter(ServletRequest request, ServletResponse response, 
         FilterChain chain)
         throws IOException, ServletException { 
         
         if (debug) { 
            log("AuthenticationFilter:doFilter()");
         } 

        doBeforeProcessing(request, response);
        
        Throwable problem = null; 
        try {  
            HttpServletRequest req = (HttpServletRequest) request;
            HttpServletResponse res = (HttpServletResponse) response;
            
            String uri = req.getRequestURI();
            log("Requested Resource::" + uri);
            
            HttpSession session = req.getSession(false); 
                if (session == null && !(uri.endsWith("html") || uri.endsWith("LoginServlet"))) {
                    log("Unauthorized access request");
               
            res.sendRedirect("index.html");
                }else{ 
            // pass the request along the filter chain
                 chain.doFilter(request, response); 
                } 
       } catch (Throwable t) { 
        // If an exception is thrown somewhere down the filter chain, 
        // we still want to execute our after processing, and then 
        // rethrow the problem after that. 
            problem = t;
            t.printStackTrace(); 
        } 

        doAfterProcessing(request, response); 

        // If there was a problem, we want to rethrow it if it is 
        // a known type, otherwise log it. 
        if (problem != null) { 
            if (problem instanceof ServletException) {
            throw (ServletException) problem;
            } 
            if (problem instanceof IOException) { 
                throw (IOException) problem; 
            } 
            sendProcessingError(problem, response); 
         } 
        } 
 /** 
 * Return the filter configuration object for this filter. 
 */ 
     public FilterConfig getFilterConfig() { 
         return (this.filterConfig); 
        } 
        /** 
        * Set the filter configuration object for this filter. 
        * 
        * @param filterConfig The filter configuration object 
        */ 

        public void setFilterConfig(FilterConfig filterConfig) { 
        this.filterConfig = filterConfig; 
        } 
        /** 
        * Destroy method for this filter 
        */ 

         public void destroy() { 
        } 
        /** 
        * Init method for this filter
        */ 
        public void init(FilterConfig filterConfig) { 
        this.filterConfig = filterConfig;
        if (filterConfig != null) {
                if (debug) { 
                        log("AuthenticationFilter:Initializing filter");
                }
        } 
        } 
        /** 
        * Return a String representation of this object. 
        */ 

        @Override
        public String toString() { 
            if (filterConfig == null) { 
                return ("AuthenticationFilter()"); 
            }
            StringBuffer sb = new StringBuffer("AuthenticationFilter("); 
            sb.append(filterConfig); 
            sb.append(")"); 
            return (sb.toString());
        } 

        private void sendProcessingError(Throwable t, ServletResponse response) {
            String stackTrace = getStackTrace(t); 
            if (stackTrace != null && !stackTrace.equals("")) { 
                try {
                    response.setContentType("text/html"); 
                    PrintStream ps = new PrintStream(response.getOutputStream());
                    PrintWriter pw = new PrintWriter(ps);
                    pw.print("<html>\n<head>\n<title>Error</title>\n</head>\n<body>\n"); 
                    //NOI18N 

                    // PENDING! Localize this for next official release 
                    pw.print("<h1>The resource did not process correctly</h1>\n<pre>\n"); 
                    pw.print(stackTrace); 
                    pw.print("</pre></body>\n</html>"); 
                    //NOI18N 
                    pw.close();
                    ps.close(); 
                    response.getOutputStream().close();
                } catch (Exception ex) { 
        } 
        } else { 
             try { 
                PrintStream ps = new PrintStream(response.getOutputStream()); 
                t.printStackTrace(ps); 
                ps.close(); 
                response.getOutputStream().close();
                } catch (Exception ex) {
                } 
            }
        } 

        public static String getStackTrace(Throwable t) {
            String stackTrace = null;
            try { 
                StringWriter sw = new StringWriter(); 
                PrintWriter pw = new PrintWriter(sw);
                t.printStackTrace(pw);
                pw.close(); 
                sw.close(); 
                stackTrace = sw.getBuffer().toString();
            } catch (Exception ex) {
         }
         return stackTrace;
         } 

        public void log(String msg) { 
            filterConfig.getServletContext().log(msg); 
        }

} 

Struktur seperti di atas, telah selesai kita buat. Silahkan untuk run file filterlogin tersebut, dengan cara klik kanan dan pilih run.

Sebelumnya, jangan lupa untuk mengubah isi file web.xml seperti berikut :

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
    <filter>
<filter-name>RequestLoggingFilter</filter-name>
<filter-class>RequestLoggingFilter</filter-class>
</filter>
<filter>
<filter-name>AuthenticationFilter</filter-name>
<filter-class>AuthenticationFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>RequestLoggingFilter</filter-name>
<url-pattern>/*</url-pattern>
<dispatcher>REQUEST</dispatcher>
</filter-mapping>
<filter-mapping>
<filter-name>AuthenticationFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<servlet>
<servlet-name>LoginServlet</servlet-name>
<servlet-class>LoginServlet</servlet-class>
</servlet>
<servlet>
<servlet-name>LogoutServlet</servlet-name>
<servlet-class>LogoutServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>LoginServlet</servlet-name>
<url-pattern>/LoginServlet</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>LogoutServlet</servlet-name>
<url-pattern>/LogoutServlet</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>
30
</session-timeout>
    </session-config>
</web-app>

Sekian untuk postingan Servlet Filter kali ini, silahkan untuk mencoba nya dan semoga berhasil :)

Wassalamualaikum ..





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