Spring Security在登录验证中增加额外数据(如验证码)

  在使用Spring Security框架过程中,经常会有这样的需求,即在登录验证时,附带增加额外的数据,如验证码、用户类型等。下面将介绍如何实现。

  注:我的工程是在Spring Boot框架基础上的,使用xml方式配置的话请读者自行研究吧。

  • 实现自定义的WebAuthenticationDetails

  该类提供了获取用户登录时携带的额外信息的功能,默认实现WebAuthenticationDetails提供了remoteAddress与sessionId信息。开发者可以通过Authentication的getDetails()获取WebAuthenticationDetails。我们编写自定义类CustomWebAuthenticationDetails继承自WebAuthenticationDetails,添加我们关心的数据(以下是一个token字段)。

package com.cgs.courses.service;

import javax.servlet.http.HttpServletRequest;

import org.springframework.security.web.authentication.WebAuthenticationDetails;

public class CustomWebAuthenticationDetails extends WebAuthenticationDetails {
    /**
     * 
     */
    private static final long serialVersionUID = 6975601077710753878L;
    private final String token;

    public CustomWebAuthenticationDetails(HttpServletRequest request) {
        super(request);
        token = request.getParameter("token");
    }

    public String getToken() {
        return token;
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append(super.toString()).append("; Token: ").append(this.getToken());
        return sb.toString();
    }
}

 

   注:在登录页面,可将token字段放在form表单中,也可以直接加在url的参数中,进而把额外数据发送给后台。

  • 实现自定义的AuthenticationDetailsSource

  该接口用于在Spring Security登录过程中对用户的登录信息的详细信息进行填充,默认实现是WebAuthenticationDetailsSource,生成上面的默认实现WebAuthenticationDetails。我们编写类实现AuthenticationDetailsSource,用于生成上面自定义的CustomWebAuthenticationDetails。

package com.cgs.courses.service;

import javax.servlet.http.HttpServletRequest;

import org.springframework.security.authentication.AuthenticationDetailsSource;
import org.springframework.security.web.authentication.WebAuthenticationDetails;
import org.springframework.stereotype.Component;

@Component
public class CustomAuthenticationDetailsSource implements AuthenticationDetailsSource<HttpServletRequest, WebAuthenticationDetails> {

    @Override
    public WebAuthenticationDetails buildDetails(HttpServletRequest context) {
        return new CustomWebAuthenticationDetails(context);
    }
}

 

  • 配置使用自定义的AuthenticationDetailsSource

  只要看这一句.formLogin().authenticationDetailsSource(authenticationDetailsSource)

    @Autowired
    private AuthenticationDetailsSource<HttpServletRequest, WebAuthenticationDetails> authenticationDetailsSource;

    protected void configure(HttpSecurity http) throws Exception {
        http
            .headers()
                .cacheControl()
                .contentTypeOptions()
                .httpStrictTransportSecurity()
                .xssProtection()
                .and()
            .authorizeRequests()
                .antMatchers(
                    "/css/**",
                    "/js/**")
                .permitAll()
                .antMatchers("/**")
                .authenticated()
                .and()
            .formLogin()
                .loginPage("/login")
                .permitAll()
                .defaultSuccessUrl("/todo.html", true)
                .authenticationDetailsSource(authenticationDetailsSource)
            .and()
                .logout()
                .logoutUrl("/logout")
                .logoutRequestMatcher(new AntPathRequestMatcher("/logout"))
                .logoutSuccessUrl("/login")
                .and()
            .csrf().disable();
    }

 

  • 实现自定义的AuthenticationProvider

  AuthenticationProvider提供登录验证处理逻辑,我们实现该接口编写自己的验证逻辑。

package com.cgs.courses.service;

import org.springframework.security.authentication.AuthenticationProvider;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.AuthenticationException;
import org.springframework.stereotype.Component;

@Component
public class CustomAuthenticationProvider implements AuthenticationProvider {
    
    @Override
    public Authentication authenticate(Authentication authentication) 
            throws AuthenticationException {
        CustomWebAuthenticationDetails details = (CustomWebAuthenticationDetails) authentication.getDetails();  // 如上面的介绍,这里通过authentication.getDetails()获取详细信息
        // System.out.println(details); details.getRemoteAddress(); details.getSessionId(); details.getToken();
// 下面是验证逻辑,验证通过则返回UsernamePasswordAuthenticationToken,
// 否则,可直接抛出错误(AuthenticationException的子类,在登录验证不通过重定向至登录页时可通过session.SPRING_SECURITY_LAST_EXCEPTION.message获取具体错误提示信息)
if (验证通过) {
return UsernamePasswordAuthenticationToken(省略参数);
} else {
throw new AuthenticationException的子类("你要显示的错误信息")
}
} @Override public boolean supports(Class<?> authentication) { return authentication.equals(UsernamePasswordAuthenticationToken.class); } }

 

  • 配置使用自定义的AuthenticationProvider
  @Autowired
    private AuthenticationProvider authenticationProvider;

  @Autowired
public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception { auth.authenticationProvider(authenticationProvider); }

 

posted @ 2016-07-13 14:02  Phoenix-Smile  阅读(28070)  评论(3编辑  收藏  举报