本片部落格參考了

https://blog.csdn.net/gebitan505/article/details/51614805

threadLocal的目的是:

 實現變數的全域性話,在當前的專案當中是實現了使用者名稱的多租戶狀態下的全域性話

fiter:進行token的攔截,

ThreadLocal的程式碼

package com.zwl.util;

import java.util.HashMap;
import java.util.Map;

public class ThreadVariable {


    public static final String USER_ID = "userId";
    private static ThreadLocal<Object> threadLocal = new ThreadLocal<Object>();


    /**
     * 獲得執行緒中儲存的屬性.
     *
     * @param attribute 屬性名稱
     * @return 屬性值
     */
    public static Object get(String attribute) {
        Map map = (Map) threadLocal.get();
        if (map == null) {
            return null;
        }
        return map.get(attribute);
    }


    /**
     * report
     * 獲得執行緒中儲存的登入使用者資訊.
     */
    public static String getUserID() {
        Map map = (Map) threadLocal.get();
        if (map == null) {
            return null;
        }
        Object obj = map.get(USER_ID);

        if (obj != null) {
            return (String) obj;
        }
        return null;
    }


    public static void setUserID(String userID) {
        Map map = (Map) threadLocal.get();

        if (map == null) {
            map = new HashMap();
            threadLocal.set(map);
        }
        map.put(USER_ID, userID);
    }

    /**
     * 清除執行緒中儲存的資料
     */
    public static void clearThreadVariable() {
        threadLocal.remove();
    }
}

filter中的程式碼:

package com.zwl.filter;

import com.alibaba.fastjson.JSON;
import com.zwl.model.baseresult.Result;
import com.zwl.model.baseresult.ResultCodeEnum;
import com.zwl.model.po.TokenModel;
import com.zwl.serviceimpl.RedisTokenManagerImpl;
import com.zwl.util.ThreadVariable;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.annotation.Order;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;

/**
 * @author wb-zjp283121
 * @Title: TokenFilter
 * @ProjectName parent
 * @Description: token過濾器
 * @date 2018/7/615:26
 */
@Order(1)
// 重點
@WebFilter(filterName = "tokenFilter", urlPatterns = "/wx/*")
@Slf4j
public class TokenFilter implements Filter {

    @Autowired
    private RedisTokenManagerImpl manager;

    @Override
    public void destroy() {
        // TODO Auto-generated method stub
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {
        HttpServletRequest h_request = (HttpServletRequest) request;

        String token = request.getParameter("token");
        String requestURL = h_request.getRequestURL().toString();
        log.info("<<token>>請求url:" + requestURL + "  token:" + token);
        ThreadVariable.clearThreadVariable();

        // 註冊、登入、註冊簡訊、首頁、回撥 不需要token
        if (requestURL.contains("/pay_notify.do") || requestURL.contains("/information/getInformationList") || requestURL.contains("/wx/gift/getGiftQrCode")) {
            chain.doFilter(request, response);
            return;
        }
        if (requestURL.contains("/information/getInformationInfo")) {
            chain.doFilter(request, response);
            return;
        }
        if (requestURL.contains("/user/authorization")) {
            chain.doFilter(request, response);
            return;
        }
        if (requestURL.contains("/task/task")) {
            chain.doFilter(request, response);
            return;
        }
        if (requestURL.contains("/qr/getQRCode") || requestURL.contains("/qr/getH5QrCode")) {
            chain.doFilter(request, response);
            return;
        }
        if (requestURL.contains(" /wx/gzh/sendFormId") || requestURL.contains(" /wx/gzh/getFormId")) {
            chain.doFilter(request, response);
            return;
        }

        //測試圖片上傳
        if (requestURL.contains("/wx/file/upload")) {
            chain.doFilter(request, response);
            return;
        }
        //H5支付
        if (requestURL.contains("/wx/product/H5Buy") || requestURL.contains("/wx/pay/auth/pay.do")) {
            chain.doFilter(request, response);
            return;
        }
        // 獲取微信js api 許可權  跟 h5登入許可權
        if (requestURL.contains("/wx/gzh/getGzhJsApiToken") || requestURL.contains("/wx/user/h5WeChatLogin")) {
            chain.doFilter(request, response);
            return;
        }
        //傳送驗證碼

        if (requestURL.contains("/wx/user/sendMsgCode") || requestURL.contains("/wx/user/checkCode")) {
            chain.doFilter(request, response);
            return;
        }
        //獲取視訊列表
        if (requestURL.contains("/wx/video/getVideoList")) {
            chain.doFilter(request, response);
            return;
        }
        //根據id獲取視訊
        if (requestURL.contains("/wx/video/getVideoInfoById")) {
            chain.doFilter(request, response);
            return;
        }
        //獲取banner列表
        if (requestURL.contains("/wx/banner/getBannerList")) {
            chain.doFilter(request, response);
            return;
        }
        //獲取圖示列表
        if (requestURL.contains("/wx/icon/getIconList")) {
            chain.doFilter(request, response);
            return;
        }
        //套課程
        if (requestURL.contains("/classset/getPageAllClass") || requestURL.contains("/classset/setpAddBrowseCount") ||
                requestURL.contains("/classset/getById")) {
            chain.doFilter(request, response);
            return;
        }
        //節課程
        if (requestURL.contains("/classinfo/getPageByClassSetId") || requestURL.contains("/classinfo/getById")
                || requestURL.contains("/classinfo/setpAddBrowseCount")) {
            chain.doFilter(request, response);
            return;
        }
        //分享繫結上下級關係
        if (requestURL.contains("/user/shareRelation")) {
            chain.doFilter(request, response);
            return;
        }
        //獲取商品列表 ||根據id獲取商品詳情
        if (requestURL.contains("/product/getProductList") || requestURL.contains("/product/getProductById")) {
            chain.doFilter(request, response);
            return;
        }
        //微信頁面輪播圖
        if (requestURL.contains("/wx/banner/selectBanner")) {
            chain.doFilter(request, response);
            return;
        }
        //線下活動簽到
        if (requestURL.contains("/wx/offlineActivity/signIn") || requestURL.contains("/wx/salon/signIn")) {
            chain.doFilter(request, response);
            return;
        }
        //線下、沙龍主題詳情購買
        if (requestURL.contains("/wx/offlineActivity/getOfflineActivityThemeList") || requestURL.contains("/wx/salon/getSalonThemeList")) {
            chain.doFilter(request, response);
            return;
        }
        //線下、沙龍主題詳情購買
        if (requestURL.contains("/wx/offlineActivity/getOfflineActivityThemeDetailByThemeId")) {
            chain.doFilter(request, response);
            return;
        }
        //操作員登陸
        if (requestURL.contains("/wx/offlineActivity/offlineLogin") || requestURL.contains("/wx/salon/offlineLogin")) {
            chain.doFilter(request, response);
            return;
        }
        //線下、沙龍主題詳情介紹頁
        if (requestURL.contains("/wx/offlineActivity/getActivityCodeDetail") || requestURL.contains("/wx/salon/getSalonThemeDetailByThemeId")) {
            chain.doFilter(request, response);
            return;
        }
        //獲取書籍list
        if (requestURL.contains("/wx/gift/getGiftList")||requestURL.contains("/wx/gift/getGiftDetailById")) {
            chain.doFilter(request, response);
            return;
        }
        //是否可分享
        if (requestURL.contains("/wx/user/isShare")) {
            chain.doFilter(request, response);
            return;
        }
        // 驗證token
        // 這裡token如果接收有空格的地方，，那就是+號沒有處理好。。可以考慮變成%2B
        if (StringUtils.isBlank(token)) {
            Result result = new Result();
            result.setCode("900");
            response.setCharacterEncoding("UTF-8");
            response.getWriter().println(JSON.toJSONString(result));
            return;
        }
        token = token.replaceAll(" ", "+");
        TokenModel model = manager.getToken(token);
        if (manager.checkToken(model)) {
            // 如果token驗證成功，將token對應的使用者id存在request中，便於之後注入
            // request.setAttribute(Constants.CURRENT_USER_ID, model.getName());
            // app請求就一次，所有session沒有用處 除非pc
            // session.setAttribute(Constants.CURRENT_USER_ID,
            // model.getuserId());
            chain.doFilter(request, response);
        } else {
            // 如果驗證token失敗
            Result result = new Result();
            result.setCode("900");
            response.setCharacterEncoding("UTF-8");
            response.getWriter().println(JSON.toJSONString(result));
            return;
        }
    }

    @Override
    public void init(FilterConfig arg0) throws ServletException {
        // TODO Auto-generated method stub

    }

}