authenticate.java

来自「Describes simple java code for developme」· Java 代码 · 共 40 行

JAVA
40
字号
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

public final class Authenticate implements Filter 
{
  private FilterConfig filterConfig = null;

  public void doFilter(ServletRequest request, ServletResponse response,
    FilterChain chain)
    throws IOException, ServletException 
  {
    String password = ((HttpServletRequest) request).getParameter("password");
     
    if(password.equals("opensesame")) {   
        chain.doFilter(request, response);
    } else {
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();
        out.println("<HTML>");
        out.println("<HEAD>");
        out.println("<TITLE>");
        out.println("Incorrect Password");
        out.println("</TITLE>");
        out.println("</HEAD>");
        out.println("<BODY>");
        out.println("<H1>Incorrect Password</H1>");
        out.println("Sorry, that password was incorrect.");
        out.println("</BODY>");
        out.println("</HTML>");
    }    
  }

  public void destroy() { }

  public void init(FilterConfig filterConfig) {
    this.filterConfig = filterConfig;
  }
}

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