Use the WAFFLE framework to implement the Windows voucher agent in the Java library
Use the WAFFLE framework to implement the Windows voucher agent in the Java library
Overview:
WAFFLE is a powerful framework for achieving Windows Integrated Certification (SSO) in Java applications.Windows voucher agents allow Java applications to log in and access limited resources through the identity of Windows users.This article will guide you to use the Waffle framework to implement the Windows voucher agent in the Java class library.
step:
1. Configuration environment:
First, you need to configure the Java development environment and download the jar file of the Waffle framework.You can download the latest version of jar file from Waffle's official website (http://waffle.codeplex.com).
2. Import the Waffle library:
Add the downloaded Waffle jar file to the class path of your Java project.The specific introduction method varies according to the integrated development environment (IDE) you use. Generally, it includes adding JAR files to the construction path of the project or importing it through Maven and other dependent management tools.
3. Create Windows certification filter:
Create a new class in your Java project, such as "WindowsAuthfilter.java".This will act as a filter for Windows authentication and processing the logic of user certification.
import waffle.servlet.WindowsPrincipal;
import waffle.servlet.spi.SecurityFilterProviderCollection;
import waffle.servlet.spi.SecurityFilterProvider;
import waffle.windows.auth.IWindowsAuthProvider;
import waffle.windows.auth.impl.WindowsAuthProviderImpl;
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.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
public class WindowsAuthFilter implements Filter {
private IWindowsAuthProvider windowsAuthProvider;
@Override
public void init(FilterConfig filterConfig) throws ServletException {
this.windowsAuthProvider = new WindowsAuthProviderImpl();
}
@Override
public void destroy() {
// Close Windows certification provider connection
this.windowsAuthProvider.dispose();
}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
HttpServletRequest httpRequest = (HttpServletRequest) request;
HttpServletResponse httpResponse = (HttpServletResponse) response;
// If the request has passed the certification, continue to process the next filter
if (httpRequest.getUserPrincipal() instanceof WindowsPrincipal) {
chain.doFilter(request, response);
return;
}
// Windows authentication
try {
this.windowsAuthProvider.init(httpRequest, httpResponse);
this.windowsAuthProvider.authenticate();
// The certification is successful, set Windows users as principal into the request
WindowsPrincipal principal = this.windowsAuthProvider.getPrincipal();
httpRequest.getSession().setAttribute("principal", principal);
chain.doFilter(request, response);
} catch (Exception e) {
// Processing certification failure
httpResponse.sendError(HttpServletResponse.SC_UNAUTHORIZED);
}
}
}
4. Configure web.xml:
In the web.xml file in your web-inf directory, configure your Windows certification filter.Add the following code and customize the URL mode of the filter.
<filter>
<filter-name>WindowsAuthFilter</filter-name>
<filter-class>com.example.WindowsAuthFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>WindowsAuthFilter</filter-name>
<url-Pattern>/Secured/*</url-Pattern> <!-Custom URL mode->
</filter-mapping>
5. Use Windows Voucher Agent:
Now you can use Windows identity verification to protect limited resources.In your Java code, you can access the user's Windows voucher information through the following ways:
HttpServletRequest httpRequest = (HttpServletRequest) request;
WindowsPrincipal principal = (WindowsPrincipal) httpRequest.getSession().getAttribute("principal");
// Get information about Windows users
String username = principal.getName();
String domain = principal.getDomain();
You can use these voucher information for user authentication and permissions control.
Summarize:
By using the Waffle framework, it becomes simple and efficient to implement the Windows voucher agent in the Java library.This article introduces the basic steps of configuration and using the Waffle framework, and provides an example of Windows certification filter.By using this framework, you can easily implement Windows integrated authentication functions to provide your Java application with a safer and convenient user experience.
