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kodiyan/AuthFilter.java

Created March 26, 2015 21:20
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Primefaces Login Example with Database
Raw
AuthFilter.java
import java.io.IOException;
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.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
@WebFilter(filterName = "AuthFilter", urlPatterns = {"*.xhtml"})
public class AuthFilter implements Filter {
public AuthFilter() {
}
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
try {
// check whether session variable is set
HttpServletRequest req = (HttpServletRequest) request;
HttpServletResponse res = (HttpServletResponse) response;
HttpSession ses = req.getSession(false);
// allow user to proceed if url is login.xhtml or user logged in or user is accessing any page in //public folder
String reqURI = req.getRequestURI();
if ( reqURI.indexOf("/login.xhtml") >= 0 || (ses != null && ses.getAttribute("username") != null)
|| reqURI.indexOf("/public/") >= 0 || reqURI.contains("javax.faces.resource") )
chain.doFilter(request, response);
else // user didn't log in but asking for a page that is not allowed so take user to login page
res.sendRedirect(req.getContextPath() + "/login.xhtml"); // Anonymous user. Redirect to login page
}
catch(Throwable t) {
System.out.println( t.getMessage());
}
} //doFilter
@Override
public void destroy() {
}
}
Raw
DBCon.java
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class DBCon {
public Connection getConnection() {
Connection con = null;
try {
String dbDriver = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
String dbURL = "jdbc:sqlserver://SERVER_NAME;database=DB_NAME;user=USER_NAME;password=PASSWORD";
Class.forName(dbDriver);
con = DriverManager.getConnection(dbURL);
System.out.println("DB Connecting");
} catch (ClassNotFoundException | SQLException e) {
e.printStackTrace();
System.out.println("Database.getConnection() Error -->" + e.getMessage());
}
return con;
}
public void close(Connection con) {
try {
con.close();
} catch (Exception ex) {
}
Raw
faces-config.xml
<?xml version='1.0' encoding='UTF-8'?>
<faces-config version="2.0"
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-facesconfig_2_0.xsd">
<navigation-rule>
<from-view-id>/login.xhtml</from-view-id>
<navigation-case>
<from-outcome>home</from-outcome>
<to-view-id>/home.xhtml</to-view-id>
</navigation-case>
</navigation-rule>
</faces-config>
Raw
login.xhtml
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.org/ui"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets">
<h:head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<title>Login Page</title>
<link type="text/css"
href="${facesContext.externalContext.requestContextPath}/resources/css/style.css"
rel="stylesheet" />
<link type="image/x-icon"
href="${facesContext.externalContext.requestContextPath}/resources/images/favicon.ico"
rel="shortcut icon" />
</h:head>
<h:body>
<div id="message">
<p:ajaxStatus style="display:block; margin-top:.5em;">
<f:facet name="default">
<h:outputText value="Please enter your credentials." />
</f:facet>
<f:facet name="start">
<h:outputText value="Please wait #{loginBean.uname}, Connecting database..." />
</f:facet>
<f:facet name="complete">
<h:outputText value="Please try again #{loginBean.uname}, Database/Login error!!" />
</f:facet>
</p:ajaxStatus>
</div>
<h:form id="loginForm">
<p:growl id="msg" showDetail="true" life="4000" />
<p:panel id="loginPnl" header="Login"
style="width: 350px; margin: 0 auto;">
<h:panelGrid id="loginPanel" columns="2" cellpadding="5">
<h:outputText value="Username" />
<p:inputText id="username" value="#{loginBean.uname}"></p:inputText>
<p:spacer /><p:spacer />
<h:outputText value="Password" />
<p:password id="password" value="#{loginBean.password}"
feedback="false"></p:password>
<p:message for="password"></p:message>
</h:panelGrid>
<h:panelGrid columns="1" cellpadding="10" width="100%">
<p:commandButton id="loginButton" action="#{loginBean.loginProject}"
value="Login" update="loginForm" ajax="true" style="float: right;">
</p:commandButton>
</h:panelGrid>
</p:panel>
<p:blockUI block="loginPnl" trigger="loginButton" style="float:right;">
<p:graphicImage value="resources/images/loader.gif" />
</p:blockUI>
</h:form>
</h:body>
</html>
Raw
LoginBean.java
import java.io.Serializable;
import javax.faces.application.FacesMessage;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
import javax.faces.context.FacesContext;
import javax.servlet.http.HttpSession;
@ManagedBean(name = "loginBean")
@SessionScoped
public class LoginBean implements Serializable {
private static final long serialVersionUID = 1L;
private String password;
private String message, uname;
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getUname() {
return uname;
}
public void setUname(String uname) {
this.uname = uname;
}
public String loginProject() {
boolean result = LoginDAO.login(uname, password);
if (result) {
// get Http Session and store username
HttpSession session = Util.getSession();
session.setAttribute("username", uname);
return "index";
} else {
FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_WARN,
"Invalid Login!",
"Please Try Again!"));
// invalidate session, and redirect to other pages
//message = "Invalid Login. Please Try Again!";
return "login";
}
}
public String logout() {
HttpSession session = Util.getSession();
session.invalidate();
return "login";
}
}
Raw
LoginDAO.java
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import javax.faces.application.FacesMessage;
import javax.faces.context.FacesContext;
import com.jpmc.acaps.repo.DBCon;
public class LoginDAO {
public static boolean login(String user, String password) {
Connection con = null;
PreparedStatement ps = null;
DBCon dbcon = new DBCon();
try {
con = dbcon.getConnection();
ps = con.prepareStatement(
"SELECT username, password FROM UserLogin WHERE username= ? and password= ? ");
ps.setString(1, user);
ps.setString(2, password);
ResultSet rs = ps.executeQuery();
if (rs.next()) // found
{
System.out.println(rs.getString("username"));
return true;
}
else {
FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_WARN,
"LoginDAO!",
"Wrong password message test!"));
return false;
}
}
catch (Exception ex) {
FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_ERROR,
"Database Error",
"Unable to connect database"));
System.out.println("Error in login() -->" + ex.getMessage());
return false;
} finally {
dbcon.close(con);
}
}
public static void main(String[] args) {
System.out.println(LoginDAO.login("user", "pass"));
}
}
Raw
text
PrimeFaces login example using MySQL db
Required Jar
jsf-api.jar
jsf-impl.jar
jstl.jar
mysql-connector-java-5.1.13-bin.jar
primefaces-3.4.1.jar
standard.jar
Raw
Util.java
import javax.faces.context.FacesContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
public class Util {
public static HttpSession getSession() {
return (HttpSession)
FacesContext.
getCurrentInstance().
getExternalContext().
getSession(false);
}
public static HttpServletRequest getRequest() {
return (HttpServletRequest) FacesContext.
getCurrentInstance().
getExternalContext().getRequest();
}
public static String getUserName()
{
HttpSession session = (HttpSession) FacesContext.getCurrentInstance().getExternalContext().getSession(false);
return session.getAttribute("username").toString();
}
public static String getUserId()
{
HttpSession session = getSession();
if ( session != null )
return (String) session.getAttribute("userid");
else
return null;
}
}
@pjomcsJAVA
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Could you make available the css files you use in xhtml?

Thank you!

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