package com.oying.modules.security.security;
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import cn.hutool.core.util.StrUtil;
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import lombok.extern.slf4j.Slf4j;
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import com.oying.modules.security.config.SecurityProperties;
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import com.oying.modules.security.service.dto.OnlineUserDto;
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import com.oying.modules.security.service.OnlineUserService;
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import org.springframework.security.core.Authentication;
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import org.springframework.security.core.context.SecurityContextHolder;
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import org.springframework.util.StringUtils;
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import org.springframework.web.filter.GenericFilterBean;
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import javax.servlet.FilterChain;
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import javax.servlet.ServletException;
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import javax.servlet.ServletRequest;
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import javax.servlet.ServletResponse;
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import javax.servlet.http.HttpServletRequest;
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import java.io.IOException;
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/**
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* @author Z
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*/
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@Slf4j
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public class TokenFilter extends GenericFilterBean {
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private final TokenProvider tokenProvider;
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private final SecurityProperties properties;
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private final OnlineUserService onlineUserService;
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/**
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* @param tokenProvider Token
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* @param properties JWT
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* @param onlineUserService 用户在线
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*/
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public TokenFilter(TokenProvider tokenProvider, SecurityProperties properties, OnlineUserService onlineUserService) {
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this.properties = properties;
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this.onlineUserService = onlineUserService;
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this.tokenProvider = tokenProvider;
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}
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@Override
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public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws ServletException, IOException {
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HttpServletRequest httpServletRequest = (HttpServletRequest) servletRequest;
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String token = resolveToken(httpServletRequest);
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// 对于 Token 为空的不需要去查 Redis
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if(StrUtil.isNotBlank(token)){
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// 获取用户Token的Key
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String loginKey = tokenProvider.loginKey(token);
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OnlineUserDto onlineUserDto = onlineUserService.getOne(loginKey);
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// 判断用户在线信息是否为空
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if (onlineUserDto != null) {
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// Token 续期判断
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tokenProvider.checkRenewal(token);
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// 获取认证信息，设置上下文
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Authentication authentication = tokenProvider.getAuthentication(token);
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SecurityContextHolder.getContext().setAuthentication(authentication);
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}
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}
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filterChain.doFilter(servletRequest, servletResponse);
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}
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/**
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* 初步检测Token
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*
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* @param request /
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* @return /
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*/
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private String resolveToken(HttpServletRequest request) {
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String bearerToken = request.getHeader(properties.getHeader());
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if (StringUtils.hasText(bearerToken) && bearerToken.startsWith(properties.getTokenStartWith())) {
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// 去掉令牌前缀
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return bearerToken.replace(properties.getTokenStartWith(), "");
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} else {
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log.debug("非法Token：{}", bearerToken);
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}
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return null;
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}
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}
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