src/main/java/com/gxuwz/jyd/config/CustomProvider.java

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package com.gxuwz.jyd.config;

import com.gxuwz.jyd.pojo.SysUser;
import com.gxuwz.jyd.security.UserDetailsServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.AuthenticationProvider;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletRequest;

/*
* 用户认证接口类
* */
@Component
public class CustomProvider implements AuthenticationProvider {
    @Autowired
    UserDetailsServiceImpl userDetailsService;

    @Override
    public Authentication authenticate(Authentication authentication) throws AuthenticationException {
        // 获取前端返回的用户名和密码
        UsernamePasswordAuthenticationToken token = (UsernamePasswordAuthenticationToken) authentication;
        String userId = token.getName(); // 前台用户名
        String password = token.getCredentials().toString(); // 前台的密码
        User user = (User) userDetailsService.loadUserByUsername(userId);

        if (user == null){
            throw new UsernameNotFoundException("用户不存在");
        }
        if (!user.getPassword().equals(password)){
            throw new BadCredentialsException("密码错误");
        }
        System.out.println("验证通过");

        return new UsernamePasswordAuthenticationToken(user,user.getPassword(),user.getAuthorities());
    }

    @Override
    public boolean supports(Class<?> aClass) {
        return true;
    }
}