package com.nq.common.interceptor;
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import com.alibaba.druid.util.StringUtils;
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import com.alibaba.fastjson.JSON;
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import com.google.common.collect.Maps;
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import com.google.gson.Gson;
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import com.nq.annotation.SameUrlData;
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import com.nq.common.ServerResponse;
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import com.nq.pojo.User;
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import com.nq.utils.PropertiesUtil;
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import com.nq.utils.redis.JsonUtil;
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import com.nq.utils.redis.RedisShardedPoolUtils;
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import com.nq.utils.translate.GoogleTranslateUtil;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.data.redis.core.RedisTemplate;
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import org.springframework.http.HttpMethod;
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import org.springframework.lang.Nullable;
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import org.springframework.stereotype.Component;
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import org.springframework.web.method.HandlerMethod;
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import org.springframework.web.servlet.HandlerInterceptor;
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import org.springframework.web.servlet.ModelAndView;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.lang.annotation.Annotation;
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import java.util.Map;
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import java.util.concurrent.TimeUnit;
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@Component
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public class ApiUserAuthorityInterceptor implements HandlerInterceptor {
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private static final Logger log = LoggerFactory.getLogger(ApiUserAuthorityInterceptor.class);
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private RedisTemplate<String,String> redisTemplate;
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public ApiUserAuthorityInterceptor(RedisTemplate<String, String> redisTemplate) {
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this.redisTemplate = redisTemplate;
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}
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@Override
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public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object handler) throws Exception {
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// httpServletResponse.setHeader("Access-Control-Allow-Origin",httpServletRequest.getHeader("origin"));
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// //该字段可选，是个布尔值，表示是否可以携带cookie
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// httpServletResponse.setHeader("Access-Control-Allow-Credentials", "true");
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// httpServletResponse.setHeader("Access-Control-Allow-Methods", "GET, HEAD, POST, PUT,PATCH, DELETE, OPTIONS");
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// httpServletResponse.setHeader("Access-Control-Allow-Headers", "*");
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// httpServletResponse.setHeader("Access-Control-Allow-Headers", "usertoken");
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if (HttpMethod.OPTIONS.toString().equals(httpServletRequest.getMethod())){
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return true;
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}
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String url = httpServletRequest.getRequestURI();
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if ("/user/upload.do".equals(url)) {
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return true;
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}
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if ("/user/pay.do".equals(url)) {
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return true;
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}
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if ("/user/list.do".equals(url)) {
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return true;
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}
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if ("/user/newStockBuy.do".equals(url)) {
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return true;
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}
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if ("/user/buchahbds.do".equals(url)) {
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return true;
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}
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if ("/user/pay/flyPay.do".equals(url)) {
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return true;
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}
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if ("/user/rechargeCallback.do".equals(url)) {//支付回调
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return true;
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}
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if ("/user/rechargeCallbackTwo.do".equals(url)) {//支付回调
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return true;
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}
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if ("/user/rechargeCallbackZero.do".equals(url)) {//支付回调
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return true;
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}
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if ("/user/rechargeCallbackThree.do".equals(url)) {//支付回调
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return true;
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}
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if ("/user/payoutCallback.do".equals(url)) {//代付回调
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return true;
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}
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User currentUser = getCurrentUser(httpServletRequest);
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GoogleTranslateUtil googleTranslateUtil = new GoogleTranslateUtil();
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String lang = httpServletRequest.getHeader("lang");
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if (null == currentUser) {
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httpServletResponse.setCharacterEncoding("UTF-8");
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httpServletResponse.setContentType("application/json;charset=UTF-8");
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PrintWriter writer = httpServletResponse.getWriter();
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writer.print( new Gson().toJson(ServerResponse.createByErrorCodeMsg(401,googleTranslateUtil.translate("请登录",lang ))));
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writer.flush();
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writer.close();
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return false;
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}
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String uri = httpServletRequest.getRequestURI();
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//验证重复点击与接口权限等
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Boolean checkFlag = checkUri(httpServletResponse, handler, uri,currentUser);
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if (!checkFlag) {
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return Boolean.FALSE;
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}
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//判断请求头
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return true;
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}
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@Override
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public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object handler, ModelAndView modelAndView) throws Exception {
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}
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/**
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* token验证
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*
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* @param response 返回
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* @param handler 请求头
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* @return R 的统一返回，并拦截
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* @throws Exception 异常情况，则为服务异常
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*/
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private Boolean checkUri(HttpServletResponse response, Object handler, String uri,User user) throws Exception {
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//判断连续请求的情况
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if (handler instanceof HandlerMethod) {
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SameUrlData tokenTypeAnnotation = findAnnotation((HandlerMethod) handler, SameUrlData.class);
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//判断是否需要验证连续点击
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if (tokenTypeAnnotation != null && redisTemplate.hasKey(user.getId() + uri)) {
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return responseWrite(response, "請勿頻繁點擊");
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} else {
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//将接口+用户信息存储到缓存中。进行重复点击校验
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redisTemplate.opsForValue().set(user.getId()+ uri, "", 30, TimeUnit.SECONDS);
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}
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}
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return true;
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}
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private Boolean responseWrite(HttpServletResponse response, String resultMSG) throws Exception {
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//throw new BaseException(resultCode);
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// 定义返回类型为JSON
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response.setContentType("application/json;charset=UTF-8");
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// 获取PrintWriter
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PrintWriter out = response.getWriter();
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//将异常类型写入
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ServerResponse<Object> byErrorMsg = ServerResponse.createByErrorMsg(resultMSG);
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out.write(JSON.toJSONString(byErrorMsg));
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//输出流
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out.flush();
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//关闭请求
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out.close();
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return true;
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}
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/**
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* 请求结束后进行的操作
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*
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* @param request 请求信息
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* @param response 返回信息
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* @param handler 请求头
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* @param ex 异常情况
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*/
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@Override
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public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, @Nullable
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Exception ex) {
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String uri = request.getRequestURI();
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if (handler instanceof HandlerMethod) {
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User currentUser = getCurrentUser(request);
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SameUrlData tokenTypeAnnotation = findAnnotation((HandlerMethod) handler, SameUrlData.class);
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//没有声明需要权限,或者声明不验证权限
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if (tokenTypeAnnotation != null) {
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redisTemplate.delete(currentUser.getId() + uri);
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}
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}
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}
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/**
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* 获取接口上的注解
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*
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* @param handler 请求方法
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* @param annotationType 想要获取的注解
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* @param <T> 想要获取的注解类型
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* @return 注解
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*/
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private <T extends Annotation> T findAnnotation(HandlerMethod handler, Class<T> annotationType) {
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T annotation = handler.getBeanType().getAnnotation(annotationType);
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if (annotation != null) {
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return annotation;
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}
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return handler.getMethodAnnotation(annotationType);
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}
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/**
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* 当前用户token鉴权
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*
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* @param request 请求
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* @return 当前用户
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*/
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public User getCurrentUser(HttpServletRequest request) {
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String property = PropertiesUtil.getProperty("user.cookie.name");
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String loginToken = request.getHeader(property);
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if (loginToken == null) {
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return null;
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}
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String userJson = RedisShardedPoolUtils.get(loginToken);
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if (userJson == null||"".equals(userJson)){
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return null;
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}
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return (User) JsonUtil.string2Obj(userJson, User.class);
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}
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}
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