Spring Boot 整合 Security 权限控制-6:自定义failureHandler

在 java 源码目录下创建hander文件夹, 在该文件夹下创建CustomAuthenticationFailHander类文件

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 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
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 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
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package com.edurt.hander;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.WebAttributes;
import org.springframework.security.web.authentication.SimpleUrlAuthenticationFailureHandler;
import org.springframework.stereotype.Component;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/**
 * CustomAuthenticationFailHander <br/>
 * 描绘 : CustomAuthenticationFailHander <br/>
 * 作者 : qianmoQ <br/>
 * 版别 : 1.0 <br/>
 * 创建时间 : 2018-03-20 下午4:08 <br/>
 * 联络作者 : <a href="mailTo:shichengoooo@163.com">qianmoQ</a>
 */
@Component(value = "customAuthenticationFailHander")
public class CustomAuthenticationFailHander extends SimpleUrlAuthenticationFailureHandler {
    @Override
    public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response, AuthenticationException exception) throws IOException, ServletException {
        System.out.println("登录失利!!!");
        this.returnJson(response, exception);
    }
    /**
     * 直接返回需求返回的 json 数据
     */
    private void returnJson(HttpServletResponse response,
                            AuthenticationException exception) throws IOException {
        response.setCharacterEncoding("UTF-8");
        response.setContentType("application/json");
        response.getWriter().println("{\"ok\":0,\"msg\":\"" + exception.getLocalizedMessage() + "\"}");
    }
    /**
     * 直接返会过错页面
     */
    private void returnErrorPage(HttpServletRequest request, HttpServletResponse response,
                                 AuthenticationException exception) throws IOException, ServletException {
        String strUrl = request.getContextPath() + "/loginErrorPath";
        request.getSession().setAttribute("status", 0);
        request.getSession().setAttribute("message", exception.getLocalizedMessage());
        request.getSession().setAttribute(WebAttributes.AUTHENTICATION_EXCEPTION, exception);
        // 运用该方法会出现过错
//        request.getRequestDispatcher(strUrl).forward(request, response);
        response.sendRedirect(strUrl);
    }
}

修正WebSecurityConfig配置文件支持自定义Handler

@Autowired
private CustomAuthenticationFailHander customAuthenticationFailHander;
@Override
protected void configure(HttpSecurity http) throws Exception {
    http.csrf().disable()
            // 允许直接拜访/途径
            .authorizeRequests().antMatchers("/").permitAll()
            // 使其支持跨域
            .requestMatchers(CorsUtils::isPreFlightRequest).permitAll()
            // 其他途径需求授权拜访
            .anyRequest().authenticated()
            // 指定登录页面
            .and().formLogin().loginPage("/user/login")
            // 指定登录失利跳转地址, 运用自定义过错信息
            .failureHandler(customAuthenticationFailHander)
            // 登录成功后的默许途径
            .defaultSuccessUrl("/").permitAll()
            // 退出登录后的默许途径
            .and().logout().logoutSuccessUrl("/user/login").permitAll();
}