spring security他是自带一个页面的,如果我们没有页面的话,他会进行一个账号密码的校验,成功就会走成功的处理器,失败就会走失败的处理器

成功处理器

package com.lzy.security;import cn.hutool.json.JSONUtil;
import com.lzy.common.lang.Result;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.authentication.AuthenticationFailureHandler;
import org.springframework.security.web.authentication.AuthenticationSuccessHandler;
import org.springframework.stereotype.Component;import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
@Componentpublic class LoginSuccessHandler implements AuthenticationSuccessHandler {@Overridepublic void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException, ServletException {// 将响应的内容类型设置为JSONresponse.setContentType("application/json;charset=utf-8");// 获取响应的输出流ServletOutputStream out = response.getOutputStream();//生成JWT,并且放置到请求头// 创建一个包含异常消息的Result对象Result result = Result.success("成功");// 将Result对象转换为JSON字符串，并写入输出流out.write(JSONUtil.toJsonStr(result).getBytes("UTF-8"));// 刷新输出流out.flush();// 关闭输出流out.close();}}

失败处理器

package com.lzy.security;import cn.hutool.json.JSONUtil;
import com.lzy.common.lang.Result;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.authentication.AuthenticationFailureHandler;
import org.springframework.stereotype.Component;import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
@Component
public class LoginFailureHandler implements AuthenticationFailureHandler {// 当身份验证失败时调用此方法@Overridepublic void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response, AuthenticationException exception) throws IOException, ServletException {// 将响应的内容类型设置为JSONresponse.setContentType("application/json;charset=utf-8");// 获取响应的输出流ServletOutputStream out = response.getOutputStream();// 创建一个包含异常消息的Result对象Result result = Result.fail(exception.getMessage());// 将Result对象转换为JSON字符串，并写入输出流out.write(JSONUtil.toJsonStr(result).getBytes("UTF-8"));// 刷新输出流out.flush();// 关闭输出流out.close();}
}

怎么调用他们

package com.lzy.config;import com.lzy.security.CaptchaFilter;
import com.lzy.security.LoginFailureHandler;
import com.lzy.security.LoginSuccessHandler;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
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.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true) // 开启方法级别的权限注解
public class SecurityConfig extends WebSecurityConfigurerAdapter {@AutowiredLoginFailureHandler loginFailureHandler;@AutowiredLoginSuccessHandler loginSuccessHandler;@AutowiredCaptchaFilter captchaFilter;private static final String[] URL_WHITELIST = {"/login","/logout","/captcha","/favicon.ico", // 防止 favicon 请求被拦截};protected void configure(HttpSecurity http) throws Exception {//跨域配置http.cors().and().csrf().disable()//登录配置.formLogin().successHandler(loginSuccessHandler).failureHandler(loginFailureHandler)//禁用session.and().sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)//配置拦截规则.and().authorizeRequests()//白名单.antMatchers(URL_WHITELIST).permitAll()//其他请求都需要认证.anyRequest().authenticated()//异常处理器//配置自定义的过滤器.and().addFilterBefore(captchaFilter, UsernamePasswordAuthenticationFilter.class);}}

因为spring security是不带验证码过滤器的,所以得我们自己写,并且要写在账号密码过滤器前,失败就走失败处理器

验证码过滤器

package com.lzy.security;import com.lzy.common.exception.CaptureException;
import com.lzy.util.Constants;
import com.lzy.util.RedisUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.AuthenticationException;
import org.springframework.stereotype.Component;
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;@Component
public class CaptchaFilter extends OncePerRequestFilter {@AutowiredRedisUtil redisUtil;@AutowiredLoginFailureHandler loginFailureHandler;@Overrideprotected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {//判断是不是登录请求String url = request.getRequestURI();if (url.equals("/login") && request.getMethod().equals("POST")) {//如果是登录请求，判断验证码是否为空try {//验证验证码voildCaptcha(request, response, filterChain);} catch (CaptureException e) {//交给登录失败处理器loginFailureHandler.onAuthenticationFailure(request, response, e);}}filterChain.doFilter(request, response);}private void voildCaptcha(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) {String captcha = request.getParameter("code");String key = request.getParameter("token");//判断验证码是否为空if (captcha.isBlank() || key.isBlank()) {throw new CaptureException("验证码不能为空");}//判断验证码是否正确if (!redisUtil.hget(Constants.CAPTURE, key).equals(captcha)) {throw new CaptureException("验证码错误");}//删除验证码redisUtil.hdel(Constants.CAPTURE, key);}}

也是在刚才的securitycofig下面调用,代码就是刚才那个