SpringSecurity 增加Filter过滤器

配置类

package com.imooc.security.browser;

import com.imooc.security.core.properties.SecurityProperties;
import com.imooc.security.core.validate.code.ValidateCodeFilter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.crypto.scrypt.SCryptPasswordEncoder;
import org.springframework.security.web.authentication.AuthenticationFailureHandler;
import org.springframework.security.web.authentication.AuthenticationSuccessHandler;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

@Configuration
public class BrowserSecurityConfig  extends WebSecurityConfigurerAdapter {
    @Autowired
    private AuthenticationSuccessHandler imoocAuthenticationSuccessHandler;
    @Autowired
    private AuthenticationFailureHandler imoocAuthenctiationFailureHandler;
    @Bean
    public PasswordEncoder passwordEncoder() {
        return new SCryptPasswordEncoder();
    }

    @Autowired
    private SecurityProperties securityProperties;

    @Override
    public void configure(HttpSecurity http) throws Exception {
        // 验证码过滤器
        ValidateCodeFilter validateCodeFilter = new ValidateCodeFilter();
        validateCodeFilter.setAuthenticationFailureHandler(imoocAuthenctiationFailureHandler);
        validateCodeFilter.setSecurityProperties(securityProperties);
        validateCodeFilter.afterPropertiesSet();
        // 添加一个图片验证filter, 在UsernamePasswordAuthenticationFilter之前执行
        http.addFilterBefore(validateCodeFilter, UsernamePasswordAuthenticationFilter.class)
                // .httpBasic() // 默认方式
                .formLogin() // 设置认证的登录方式 表单方式
                .loginPage("/authentication/require") // 自定义登录页面
                .loginProcessingUrl("/authentication/form") // 自定义表单url, 默认是login
                .successHandler(imoocAuthenticationSuccessHandler) // 不适用默认的认证成功处理器
                .failureHandler(imoocAuthenctiationFailureHandler) // 登录失败处理器
//                .failureForwardUrl("/authentication/require")
//                .failureUrl("/authentication/require")
                .and()
                .authorizeRequests() // 需要授权
                // 当匹配到这个页面时,不需要授权
                .antMatchers("/authentication/require", securityProperties.getBrowser().getLoginPage(),
                        "/code/image").permitAll()
                .anyRequest() // 所有请求
                .authenticated()
        .and()  // 关闭csrf
        .csrf()
        .disable();
    }
}

　　Filter

package com.imooc.security.core.validate.code;


import com.imooc.security.core.properties.SecurityProperties;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.security.web.authentication.AuthenticationFailureHandler;
import org.springframework.social.connect.web.HttpSessionSessionStrategy;
import org.springframework.social.connect.web.SessionStrategy;
import org.springframework.util.AntPathMatcher;
import org.springframework.web.bind.ServletRequestBindingException;
import org.springframework.web.bind.ServletRequestUtils;
import org.springframework.web.context.request.ServletWebRequest;
import org.springframework.web.filter.OncePerRequestFilter;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;

/**
 * OncePerRequestFilter 只会调用一次Filter
 */
public class ValidateCodeFilter extends OncePerRequestFilter implements InitializingBean {
    private SessionStrategy sessionStrategy = new HttpSessionSessionStrategy();

    private Set<String> urls = new HashSet<>();
    private SecurityProperties securityProperties;
    public void setSecurityProperties(SecurityProperties securityProperties) {
        this.securityProperties = securityProperties;
    }
    private AuthenticationFailureHandler authenticationFailureHandler;

    private AntPathMatcher pathMatcher = new AntPathMatcher();

    // 加载完配置文件之后,获取所有需要使用验证码的url
    @Override
    public void afterPropertiesSet() throws ServletException {
        super.afterPropertiesSet();
        String[] configUrls = StringUtils.splitByWholeSeparatorPreserveAllTokens(securityProperties.getCode().getImage().getUrl(), ",");
        for (String url : configUrls) {
            urls.add(url);
        }
        urls.add("/authentication/form");
    }
    @Override
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {
       boolean action = false;
        for (String url : urls) {
            if (pathMatcher.match(url, request.getRequestURI()))
                action = true;
        }
        if (action) {
            try {
                validate(new ServletWebRequest(request));
            } catch (ValidateCodeException e) {
                authenticationFailureHandler.onAuthenticationFailure(request, response, e);
                return;
            }
        }
        filterChain.doFilter(request, response);
    }

    public void validate(ServletWebRequest request) throws ServletRequestBindingException {

        ImageCode codeInSession = (ImageCode) sessionStrategy.getAttribute(request, ValidateCodeController.SESSION_KEY);
        String codeInRequest = ServletRequestUtils.getStringParameter(request.getRequest(), "imageCode");
        if (StringUtils.isBlank(codeInRequest)) {
            throw new ValidateCodeException( "验证码的值不能为空");
        }

        if (codeInRequest == null) {
            throw new ValidateCodeException( "验证码不存在");
        }

        if (codeInSession.isExpried()) {
            sessionStrategy.removeAttribute(request,  ValidateCodeController.SESSION_KEY);
            throw new ValidateCodeException( "验证码已过期");
        }

        if (!StringUtils.equals(codeInSession.getCode(), codeInRequest)) {
            throw new ValidateCodeException( "验证码不匹配");
        }

        sessionStrategy.removeAttribute(request, ValidateCodeController.SESSION_KEY);
    }
    public void setAuthenticationFailureHandler(AuthenticationFailureHandler authenticationFailureHandler) {
        this.authenticationFailureHandler = authenticationFailureHandler;
    }

}