推荐列表 fix

community-service/src/main/java/com/tanpu/community/manager/ThemeManager.java

@@ -77,6 +77,7 @@ import javax.annotation.PostConstruct;
 import javax.annotation.Resource;
 import java.io.File;
 import java.io.IOException;
+import java.time.LocalDateTime;
 import java.util.*;
 import java.util.stream.Collectors;
 
@@ -142,7 +143,7 @@ public class ThemeManager {
             FileUtils.forceMkdir(f);
         }
     }
-    
+
     // 专栏
     @Autowired
     private FeignClientForCommunity feignClientForCommunity;
@@ -403,15 +404,19 @@ public class ThemeManager {
      */
     // 查询主题列表：推荐/关注/热门/最新
     public ThemeListResp queryList(ThemeListReq req, String userId) {
-        List<String> excludeIds;
+        List<String> excludeIds = new ArrayList<>();
+        LocalDateTime firstThemeTime = LocalDateTime.now();
         if (req.page.pageNumber > 1) {
             String l = redisCache.get("queryThemes_" + req.ident);
-            excludeIds = StringUtils.isBlank(l) ? new ArrayList<>() : JsonUtil.toBean(l, new TypeReference<List<String>>() {
-            });
-        } else {
-            excludeIds = new ArrayList<>();
+            if (StringUtils.isBlank(l)) {
+                excludeIds = JsonUtil.toBean(l, new TypeReference<List<String>>() {
+                });
+                firstThemeTime = themeService.queryByThemeIdIgnoreDelete(excludeIds.get(0)).getCreateTime();
+            }
+
         }
 
+
         Integer pageStart = (req.page.pageNumber - 1) * req.page.pageSize;
         Integer pageSize = req.page.pageSize;
 
@@ -422,11 +427,11 @@ public class ThemeManager {
             // 需要筛掉用户访问过详情的 & 最近出现在列表页过的.
             List<String> visitedIds = visitLogService.queryUserRecentVisited(userId);
             List<String> excludes = ListUtils.union(excludeIds, visitedIds);
-            List<String> recmdIds = recommendService.getRecommendThemes(pageStart, pageSize, userId, excludes);
+            List<String> recmdIds = recommendService.getRecommendThemes(pageStart, pageSize, userId, excludes, firstThemeTime);
 
             // 加载第一页时，为防止首页显示空列表,从推荐池中再捞出已看过帖子
             if (req.page.pageNumber == 1 && recmdIds.size() < pageSize) {
-                recmdIds.addAll(recommendService.getRecommendThemes(pageStart, pageSize, userId, recmdIds));
+                recmdIds.addAll(recommendService.getRecommendThemes(pageStart, pageSize, userId, recmdIds, firstThemeTime));
             }
 
             themes = themeService.queryByThemeIds(recmdIds);

community-service/src/main/java/com/tanpu/community/service/RecommendService.java

@@ -6,6 +6,7 @@ import com.tanpu.community.api.beans.resp.PythonResponse;
 import com.tanpu.community.dao.entity.community.ThemeEntity;
 import com.tanpu.community.util.BizUtils;
 import com.tanpu.community.util.ConvertUtil;
+import com.tanpu.community.util.TimeUtils;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
@@ -13,6 +14,7 @@ import org.springframework.stereotype.Service;
 import org.springframework.web.client.RestTemplate;
 
 import javax.annotation.Resource;
+import java.time.LocalDateTime;
 import java.util.*;
 import java.util.stream.Collectors;
 
@@ -49,22 +51,25 @@ public class RecommendService {
     // 推荐
     private Map<String, List<String>> recommondList = new HashMap<>();
 
-    public List<String> getRecommendThemes(Integer pageStart, Integer pageSize, String userId, List<String> excludeIds) {
+    public List<String> getRecommendThemes(Integer pageStart, Integer pageSize, String userId, List<String> excludeIds, LocalDateTime timeAfter) {
         // 最热话题，筛掉用户发表的 & 最近看过的 & excludeIds
         List<String> hotThemeIds = rankService.getHotestThemes().stream()
                 .filter(theme -> {
-                    return !excludeIds.contains(theme.getThemeId()) && !userId.equals(theme.getAuthorId());
+                    // 暂时不过滤用户自己发的 !userId.equals(theme.getAuthorId());
+                    return !excludeIds.contains(theme.getThemeId());
                 })
                 .map(ThemeAnalysDO::getThemeId).collect(Collectors.toList());
-        hotThemeIds = BizUtils.subList(hotThemeIds, pageStart, pageSize);
+        hotThemeIds = BizUtils.subList(hotThemeIds, 0, pageSize);
 
-        //最新话题，筛掉用户发表的 & 最近看过的 & excludeIds
+        //最新话题，筛掉用户发表的 & 最近看过的 & excludeIds && 上次查询后发帖的
+        long margin = TimeUtils.calMinuteTillNow(timeAfter);
         List<String> newThemeIds = getNewestThemes().stream()
                 .filter(theme -> {
-                    return !excludeIds.contains(theme.getThemeId()) && !userId.equals(theme.getAuthorId());
+                    // 暂时不过滤用户自己发的 !userId.equals(theme.getAuthorId());
+                    return !excludeIds.contains(theme.getThemeId()) && theme.getMinutesTillNow() > margin;
                 })
                 .map(ThemeAnalysDO::getThemeId).collect(Collectors.toList());
-        newThemeIds = BizUtils.subList(newThemeIds, pageStart, pageSize);
+        newThemeIds = BizUtils.subList(newThemeIds, 0, pageSize);
 
         //推荐话题
         List<String> recThemeIds = getPythonRecommendList(userId).stream()

community-service/src/main/java/com/tanpu/community/util/TimeUtils.java

@@ -44,24 +44,36 @@ public class TimeUtils {
 
     //计算迄今分钟
     public static long calMinuteTillNow(LocalDateTime start) {
+        if (start==null){
+            return 0L;
+        }
         Duration between = Duration.between(start, LocalDateTime.now());
         return between.toMinutes();
     }
 
     //计算迄今毫秒数
     public static long calMillisTillNow(LocalDateTime start) {
+        if (start==null){
+            return 0L;
+        }
         Duration between = Duration.between(start, LocalDateTime.now());
         return between.toMillis();
     }
 
     //计算迄今天数
     public static long calDaysTillNow(LocalDateTime start) {
+        if (start==null){
+            return 0L;
+        }
         Duration between = Duration.between(start, LocalDateTime.now());
         return between.toDays();
     }
 
     //计算迄今小时数
     public static long calHoursTillNow(LocalDateTime start) {
+        if (start==null){
+            return 0L;
+        }
         Duration between = Duration.between(start, LocalDateTime.now());
         return between.toHours();
     }