cold start

long-article-recommend-service/src/main/java/com/tzld/longarticle/recommend/server/service/score/strategy/ViewMultiplierStrategy.java

@@ -5,6 +5,7 @@ import com.alibaba.fastjson.JSONObject;
 import com.tzld.longarticle.recommend.server.model.Content;
 import com.tzld.longarticle.recommend.server.service.score.*;
 import com.tzld.longarticle.recommend.server.util.CommonCollectionUtils;
+import com.tzld.longarticle.recommend.server.util.NormalizationUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.jdbc.core.BeanPropertyRowMapper;
 import org.springframework.jdbc.core.namedparam.MapSqlParameterSource;
@@ -12,6 +13,7 @@ import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate;
 import org.springframework.stereotype.Component;
 import org.springframework.util.CollectionUtils;
 
+import javax.annotation.PostConstruct;
 import java.util.*;
 import java.util.stream.Collectors;
 
@@ -23,6 +25,13 @@ public class ViewMultiplierStrategy implements ScoreStrategy {
 
     @Autowired
     NamedParameterJdbcTemplate programDataJdbcTemplate;
+    private JSONObject jsonObject;
+
+    @PostConstruct
+    public void init() {
+        String cardJSON = ResourceUtil.readUtf8Str("file/AccountInfo.json");
+        jsonObject = JSONObject.parseObject(cardJSON);
+    }
 
     @Override
     public List<Score> score(ScoreParam param) {
@@ -43,9 +52,9 @@ public class ViewMultiplierStrategy implements ScoreStrategy {
             if (Objects.nonNull(articleDTO) && Objects.nonNull(datastatDTO)) {
                 double avgReadCount = getAvgReadCount(articleDTO.getAccountId(), articleDTO.getItemIndex());
                 Integer readCount = datastatDTO.getReadCount();
-                score.setScore(readCount / avgReadCount);
+                score.setScore(NormalizationUtils.min(readCount / avgReadCount - 1));
             } else {
-                score.setScore(0.0);
+                score.setScore(-1.0);
             }
             score.setStrategy(this);
             return score;
@@ -82,9 +91,7 @@ public class ViewMultiplierStrategy implements ScoreStrategy {
     }
 
     private double getAvgReadCount(String ghId, Integer index) {
-        String cardJSON = ResourceUtil.readUtf8Str("file/AccountInfo.json");
-        JSONObject jsonObject = JSONObject.parseObject(cardJSON);
         AvgReadDTO dto = jsonObject.getObject(ghId + "_" + index, AvgReadDTO.class);
-        return dto.getReadAvg();
+        return dto == null ? 1.0 : dto.getReadAvg();
     }
 }