How to represent the Spring Security “custom-filter” using Java configuration?

问题

What is the equivalent Java configuration for the Spring Security <custom-filter> tag?

<http>
  <custom-filter position="FORM_LOGIN_FILTER" ref="myFilter"/>
</http>

I tried

http.addFilter( new MyUsernamePasswordAuthenticationFilter() )

where the class extends the default filter, but it always employs the formLogin default.

My filter:

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.security.authentication.AuthenticationServiceException;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication; 
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

public class MyUsernamePasswordAuthenticationFilter extends UsernamePasswordAuthenticationFilter{

    // proof of concept of how the http.addFilter() works

    @Override
    public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response)
            throws AuthenticationException {
        if (!request.getMethod().equals("POST")) {
            throw new AuthenticationServiceException("Authentication method not supported: " + request.getMethod());
        }

        System.out.println("running my own version of UsernmePasswordFilter ... ");

        String username = obtainUsername(request);
        String password = obtainPassword(request);

        if (username == null) {
            username = "";
        }

        if (password == null) {
            password = "";
        }

        username = username.trim();

        UsernamePasswordAuthenticationToken authRequest = new UsernamePasswordAuthenticationToken(username, password);

        // Allow subclasses to set the "details" property
        setDetails(request, authRequest);

        return this.getAuthenticationManager().authenticate(authRequest);
    }
}

The relevant configuration piece:

@Configuration
@EnableWebMvcSecurity  // annotate class configuring AuthenticationManagerBuilder
@ComponentScan("com.kayjed")
public class WebSecurityConfiguration extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(HttpSecurity http) throws Exception {

      http
        .authorizeRequests()
            .antMatchers("/resources/**","/signup").permitAll()
            .anyRequest().authenticated()
            .and()
        .formLogin()
            .loginPage("/login")
            .permitAll()
            .and()
        .logout()
            .permitAll();

      http.addFilter(new MyUsernamePasswordAuthenticationFilter());
    }

    ...
}

Running the MVC app in the debugger always shows the login attempts authentication from the default UsernamePasswordAuthenticationFilter instead of my intention of employing the MyUsernamePasswordAuthenticationFilter class.

Anyways, I am not trying to get someone to debug code; rather, I would love to see a good example using Java configuration that performs the equivalent of the custom-filter element in the XML approach. The documentation is a bit terse.

回答1:

A few issues you may need to keep in mind:

1. Your filter needs to be added before the standard UsernamePasswordAuthenticationFilter

   
   http.addFilterBefore(customUsernamePasswordAuthenticationFilter(),
           UsernamePasswordAuthenticationFilter.class)
   

2. If you extend UsernamePasswordAuthenticationFilter your filter will return immediately without doing anything unless you set a RequestMatcher

   
   myAuthFilter.setRequiresAuthenticationRequestMatcher(
       new AntPathRequestMatcher("/login","POST"));
   

3. All the configuration you do in http.formLogin().x().y().z() is applied to the standard UsernamePasswordAuthenticationFilter not the custom filter you build. You will need to configure it manually yourself. My auth filter initialization looks like this:

   
   @Bean
   public MyAuthenticationFilter authenticationFilter() {
       MyAuthenticationFilter authFilter = new MyAuthenticationFilter();
       authFilter.setRequiresAuthenticationRequestMatcher(new AntPathRequestMatcher("/login","POST"));
       authFilter.setAuthenticationManager(authenticationManager);
       authFilter.setAuthenticationSuccessHandler(new MySuccessHandler("/app"));
       authFilter.setAuthenticationFailureHandler(new MyFailureHandler("/login?error=1"));
       authFilter.setUsernameParameter("username");
       authFilter.setPasswordParameter("password");
       return authFilter;
   }
   

回答2:

I dont find any issue in this code. I think, your configuration is fine. Problem is somewhere else.I have similar code,

package com.programsji.config;

import java.util.ArrayList;
import java.util.List;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.AuthenticationProvider;
import org.springframework.security.authentication.ProviderManager;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.builders.WebSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;

import com.programsji.security.CustomAuthenticationProvider;
import com.programsji.security.CustomSuccessHandler;
import com.programsji.security.CustomUsernamePasswordAuthenticationFilter;

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Override
    public void configure(WebSecurity web) throws Exception {
        web.ignoring().antMatchers("/js/**", "/css/**", "/theme/**").and()
                .debug(true);
    }

    @Bean
    public CustomUsernamePasswordAuthenticationFilter customUsernamePasswordAuthenticationFilter()
            throws Exception {
        CustomUsernamePasswordAuthenticationFilter customUsernamePasswordAuthenticationFilter = new CustomUsernamePasswordAuthenticationFilter();
        customUsernamePasswordAuthenticationFilter
                .setAuthenticationManager(authenticationManagerBean());
        customUsernamePasswordAuthenticationFilter
                .setAuthenticationSuccessHandler(customSuccessHandler());
        return customUsernamePasswordAuthenticationFilter;
    }

    @Bean
    public CustomSuccessHandler customSuccessHandler() {
        CustomSuccessHandler customSuccessHandler = new CustomSuccessHandler();
        return customSuccessHandler;
    }

    @Bean
    public CustomAuthenticationProvider customAuthenticationProvider() {
        CustomAuthenticationProvider customAuthenticationProvider = new CustomAuthenticationProvider();
        return customAuthenticationProvider;
    }

    @Bean
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        List<AuthenticationProvider> authenticationProviderList = new ArrayList<AuthenticationProvider>();
        authenticationProviderList.add(customAuthenticationProvider());
        AuthenticationManager authenticationManager = new ProviderManager(
                authenticationProviderList);
        return authenticationManager;
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests().antMatchers("/reportspage").hasRole("REPORT")
                .antMatchers("/rawdatapage").hasRole("RAWDATA").anyRequest()
                .hasRole("USER").and().formLogin().loginPage("/login")
                .failureUrl("/login?error")
                .loginProcessingUrl("/j_spring_security_check")
                .passwordParameter("j_password")
                .usernameParameter("j_username").defaultSuccessUrl("/")
                .permitAll().and().httpBasic().and().logout()
                .logoutSuccessUrl("/login?logout").and().csrf().disable()
                .addFilter(customUsernamePasswordAuthenticationFilter());
    }

}

It is working fine on my application. you can download this entire project from url: https://github.com/programsji/rohit/tree/master/UsernamePasswordAuthenticationFilter

回答3:

Try to add @Component to your MyUsernamePasswordAuthenticationFilter class.

This annotation makes the class considered as candidates for auto-detection, see: @Component

---

For this:

<custom-filter position="FORM_LOGIN_FILTER" ref="myFilter"/>

You can add this:

.addFilter[Before|After](authenticationTokenProcessingFilter, UsernamePasswordAuthenticationFilter.class)

See: Standard Filter Aliases and Ordering

来源：https://stackoverflow.com/questions/24122586/how-to-represent-the-spring-security-custom-filter-using-java-configuration