Spring Security 自定义认证成功处理器响应JSON字符串

1. 首先添加-登陆成功处理类

package *******;

import org.springframework.security.core.Authentication;
import org.springframework.security.web.authentication.AuthenticationSuccessHandler;
import org.springframework.stereotype.Component;

import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;

/**
 * @author  
 * @Description 是登陆成功处理类
 */
@Component("urlAuthenticationSuccessHandler")
public class UrlAuthenticationSuccessHandler implements AuthenticationSuccessHandler {

    @Override
    public void onAuthenticationSuccess(HttpServletRequest httpServletRequest,
                                        HttpServletResponse httpServletResponse,
                                        Authentication authentication) throws IOException, ServletException {
        // 认证成功后，相应前端json信息
        String token = TokenUtils.createToken("***"); // 自定义token 生成类
        Cookie cookie = new Cookie("token", token); // 将token放入cookie中
        httpServletResponse.addCookie(cookie);
        httpServletResponse.setHeader("Content-Type", "application/json;charset=utf-8");
        httpServletResponse.setStatus(200);
        PrintWriter writer = httpServletResponse.getWriter();
        writer.write(ResultUtil.success("登陆成功").toString()); // ResultUtil 是自定义工具类，返回json字符串信息即可
        writer.flush();
        writer.close();
    }
}

2. 注入登录成功处理类，并将登录成功的处理类放入http.formLogin().successHandler.successHandler(urlAuthenticationSuccessHandler)

package com.*.*.*.*;

import lombok.extern.slf4j.Slf4j;
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.authentication.builders.AuthenticationManagerBuilder;
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.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.authentication.AuthenticationSuccessHandler;

/**
 * @author 
 * @Description web 安全配置
 */
@Configuration
@EnableWebSecurity
@Slf4j
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    SelfUserDetailsService userDetailsService; // UserDetailsService 的实现类

    @Autowired
    private AuthenticationSuccessHandler urlAuthenticationSuccessHandler;   // 注入登陆成功处理类

    /**
     * 登录认证
     * @param auth 登陆管理器
     */
    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        // 2. 采用数据库方式存储
        auth.userDetailsService(userDetailsService);
    }
    @Override
    protected void configure(HttpSecurity http) throws Exception {

        http.formLogin()
                .successHandler(urlAuthenticationSuccessHandler)
                .and()
                .authorizeRequests() // 对请求授权
                .anyRequest().authenticated()// 需要身份认证
        ;
    }
}