spring security是一个很大的模块，本文中只涉及到了自定义参数的认证。spring security默认的验证参数只有username和password，一般来说都是不够用的。由于时间过太久，有些忘，可能有少许遗漏。好了，不废话。
spring以及spring security配置采用javaConfig，版本依次为4.2.5，4.0.4
总体思路：自定义EntryPoint，添加自定义参数扩展AuthenticationToken以及AuthenticationProvider进行验证。

首先定义EntryPoint：

import org.springframework.security.core.AuthenticationException;import org.springframework.security.web.authentication.LoginUrlAuthenticationEntryPoint;import javax.servlet.ServletException;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import java.io.IOException;public class MyAuthenticationEntryPoint extends LoginUrlAuthenticationEntryPoint { public MyAuthenticationEntryPoint(String loginFormUrl) { super(loginFormUrl); } @Override public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException authException) throws IOException, ServletException { super.commence(request, response, authException); }}

接下来是token，validCode是验证码参数:

import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;public class MyUsernamePasswordAuthenticationToken extends UsernamePasswordAuthenticationToken { private String validCode; public MyUsernamePasswordAuthenticationToken(String principal, String credentials, String validCode) { super(principal, credentials); this.validCode = validCode; } public String getValidCode() { return validCode; } public void setValidCode(String validCode) { this.validCode = validCode; }}

继续ProcessingFilter，

import com.core.shared.ValidateCodeHandle;import org.springframework.security.core.Authentication;import org.springframework.security.core.AuthenticationException;import org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter;import org.springframework.security.web.util.matcher.AntPathRequestMatcher;import javax.servlet.ServletException;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.http.HttpSession;import java.io.IOException;public class MyValidCodeProcessingFilter extends AbstractAuthenticationProcessingFilter { private String usernameParam = "username"; private String passwordParam = "password"; private String validCodeParam = "validateCode"; public MyValidCodeProcessingFilter() { super(new AntPathRequestMatcher("/user/login", "POST")); } @Override public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response) throws AuthenticationException, IOException, ServletException { String username = request.getParameter(usernameParam); String password = request.getParameter(passwordParam); String validCode = request.getParameter(validCodeParam); valid(validCode, request.getSession()); MyUsernamePasswordAuthenticationToken token = new MyUsernamePasswordAuthenticationToken(username, password, validCode); return this.getAuthenticationManager().authenticate(token); } public void valid(String validCode, HttpSession session) { if (validCode == null) { throw new ValidCodeErrorException("验证码为空!"); } if (!ValidateCodeHandle.matchCode(session.getId(), validCode)) { throw new ValidCodeErrorException("验证码错误!"); } }}

分别定义三个参数，用于接收login表单过来的参数，构造方法给出了login的url以及需要post方式

接下来就是认证了，此处还没到认证用户名和密码的时候，只是认证了验证码

下面是ValidateCodeHandle一个工具类以及ValidCodeErrorException:

import java.util.concurrent.ConcurrentHashMap;public class ValidateCodeHandle { private static ConcurrentHashMap validateCode = new ConcurrentHashMap<>(); public static ConcurrentHashMap getCode() { return validateCode; } public static void save(String sessionId, String code) { validateCode.put(sessionId, code); } public static String getValidateCode(String sessionId) { Object obj = validateCode.get(sessionId); if (obj != null) { return String.valueOf(obj); } return null; } public static boolean matchCode(String sessionId, String inputCode) { String saveCode = getValidateCode(sessionId); if (saveCode.equals(inputCode)) { return true; } return false; }}

这里需要继承AuthenticationException以表明它是security的认证失败,这样才会走后续的失败流程

import org.springframework.security.core.AuthenticationException;public class ValidCodeErrorException extends AuthenticationException { public ValidCodeErrorException(String msg) { super(msg); } public ValidCodeErrorException(String msg, Throwable t) { super(msg, t); }}

接下来是Provider：

import org.springframework.security.authentication.BadCredentialsException;import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;import org.springframework.security.authentication.dao.DaoAuthenticationProvider;import org.springframework.security.core.AuthenticationException;import org.springframework.security.core.userdetails.UserDetails;public class MyAuthenticationProvider extends DaoAuthenticationProvider { @Override public boolean supports(Class<?> authentication) { return MyUsernamePasswordAuthenticationToken.class.isAssignableFrom(authentication); } @Override protected void additionalAuthenticationChecks(UserDetails userDetails, UsernamePasswordAuthenticationToken authentication) throws AuthenticationException { Object salt = null; if (getSaltSource() != null) { salt = getSaltSource().getSalt(userDetails); } if (authentication.getCredentials() == null) { logger.debug("Authentication failed: no credentials provided"); throw new BadCredentialsException("用户名或密码错误!"); } String presentedPassword = authentication.getCredentials().toString(); if (!this.getPasswordEncoder().isPasswordValid(userDetails.getPassword(), presentedPassword, salt)) { logger.debug("Authentication failed: password does not match stored value"); throw new BadCredentialsException("用户名或密码错误!"); } }}

其中supports方法指定使用自定义的token，additionalAuthenticationChecks方法和父类的逻辑一模一样，我只是更改了异常返回的信息。

接下来是处理认证成功和认证失败的handler

import org.springframework.security.core.Authentication;import org.springframework.security.web.authentication.SimpleUrlAuthenticationSuccessHandler;import javax.servlet.ServletException;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import java.io.IOException;public class FrontAuthenticationSuccessHandler extends SimpleUrlAuthenticationSuccessHandler { public FrontAuthenticationSuccessHandler(String defaultTargetUrl) { super(defaultTargetUrl); } @Override public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException, ServletException { super.onAuthenticationSuccess(request, response, authentication); }}import org.springframework.security.core.AuthenticationException;import org.springframework.security.web.authentication.SimpleUrlAuthenticationFailureHandler;import javax.servlet.ServletException;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import java.io.IOException;public class FrontAuthenticationFailureHandler extends SimpleUrlAuthenticationFailureHandler { public FrontAuthenticationFailureHandler(String defaultFailureUrl) { super(defaultFailureUrl); } @Override public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response, AuthenticationException exception) throws IOException, ServletException { super.onAuthenticationFailure(request, response, exception); }}

最后就是最重要的security config 了：

import com.service.user.CustomerService;import com.web.filter.SiteMeshFilter;import com.web.mySecurity.*;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.core.annotation.Order;import org.springframework.security.authentication.AuthenticationManager;import org.springframework.security.authentication.AuthenticationProvider;import org.springframework.security.authentication.ProviderManager;import org.springframework.security.config.annotation.web.builders.HttpSecurity;import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;import org.springframework.security.crypto.password.PasswordEncoder;import org.springframework.security.crypto.password.StandardPasswordEncoder;import org.springframework.security.web.access.ExceptionTranslationFilter;import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;import org.springframework.security.web.context.AbstractSecurityWebApplicationInitializer;import org.springframework.web.filter.CharacterEncodingFilter;import javax.servlet.DispatcherType;import javax.servlet.FilterRegistration;import javax.servlet.ServletContext;import java.util.ArrayList;import java.util.EnumSet;import java.util.List;@Configuration@EnableWebSecuritypublic class SecurityConfig extends AbstractSecurityWebApplicationInitializer { @Bean public PasswordEncoder passwordEncoder() { return new StandardPasswordEncoder("MD5"); } @Autowired private CustomerService customerService; @Configuration @Order(1) public static class FrontendWebSecurityConfigureAdapter extends WebSecurityConfigurerAdapter { @Autowired private MyValidCodeProcessingFilter myValidCodeProcessingFilter; @Override protected void configure(HttpSecurity http) throws Exception { http.csrf().disable() .authorizeRequests() .antMatchers("/user/login", "/user/logout").permitAll() .anyRequest().authenticated() .and() .addFilterBefore(myValidCodeProcessingFilter, UsernamePasswordAuthenticationFilter.class) .formLogin() .loginPage("/user/login") .and() .logout() .logoutUrl("/user/logout") .logoutSuccessUrl("/user/login"); } } @Bean(name = "frontAuthenticationProvider") public MyAuthenticationProvider frontAuthenticationProvider() { MyAuthenticationProvider myAuthenticationProvider = new MyAuthenticationProvider(); myAuthenticationProvider.setUserDetailsService(customerService); myAuthenticationProvider.setPasswordEncoder(passwordEncoder()); return myAuthenticationProvider; } @Bean public AuthenticationManager authenticationManager() { List<AuthenticationProvider> list = new ArrayList<>(); list.add(frontAuthenticationProvider()); AuthenticationManager authenticationManager = new ProviderManager(list); return authenticationManager; } @Bean public MyValidCodeProcessingFilter myValidCodeProcessingFilter(AuthenticationManager authenticationManager) { MyValidCodeProcessingFilter filter = new MyValidCodeProcessingFilter(); filter.setAuthenticationManager(authenticationManager); filter.setAuthenticationSuccessHandler(frontAuthenticationSuccessHandler()); filter.setAuthenticationFailureHandler(frontAuthenticationFailureHandler()); return filter; } @Bean public FrontAuthenticationFailureHandler frontAuthenticationFailureHandler() { return new FrontAuthenticationFailureHandler("/user/login"); } @Bean public FrontAuthenticationSuccessHandler frontAuthenticationSuccessHandler() { return new FrontAuthenticationSuccessHandler("/front/test"); } @Bean public MyAuthenticationEntryPoint myAuthenticationEntryPoint() { return new MyAuthenticationEntryPoint("/user/login"); }}

首先是一个加密类的bean，customerService是一个简单的查询用户

@Service("customerService")public class CustomerServiceImpl implements CustomerService { @Autowired private UserDao userDao; @Override public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException { return userDao.findCustomerByUsername(username); }}

下来就是FrontendWebSecurityConfigureAdapter了，重写了configure方法，先禁用csrf， 开启授权请求authorizeRequests()，其中”/user/login”, “/user/logout”放过权限验证， 其他请求需要进行登录认证， 然后是addFilterBefore()，把我自定义的myValidCodeProcessingFilter添加到security默认的UsernamePasswordAuthenticationFilter之前，也就是先进行我的自定义参数认证， 然后是formLogin()，配置登录url以及登出url，登录登出url都需要进行controller映射，也就是要自己写controller。
接下来就是AuthenticationProvider，AuthenticationManager，ProcessingFilter，AuthenticationFailureHandler，AuthenticationSuccessHandler，EntryPoint的bean显示声明。

下面是login.jsp

<body><div class="login_div"> <form:form autocomplete="false" commandName="userDTO" method="post"> <div> <span class="error_tips"><b>${SPRING_SECURITY_LAST_EXCEPTION.message}</b></span> </div> username:<form:input path="username" cssClass="form-control"/><br/> password:<form:password path="password" cssClass="form-control"/><br/> validateCode:<form:input path="validateCode" cssClass="form-control"/> <label>${validate_code}</label> <div class="checkbox"> <label> <input type="checkbox" name="remember-me"/>记住我 </label> </div> <input type="submit" class="btn btn-primary" value="submit"/> </form:form></div></body>

验证码验证失败的时候抛出的是ValidCodeErrorException，由于它继承AuthenticationException，security在验证的时候遇到AuthenticationException就会触发AuthenticationFailureHandler，上面的bean中声明了认证失败跳转到登录url，所以login.jsp里面有${SPRING_SECURITY_LAST_EXCEPTION.message}获取我认证时抛出异常信息，能友好的提示用户。

整个自定义security验证流程就走完了

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。