关键词搜索 后端筛选展示文本

community-api/src/main/java/com/tanpu/community/api/beans/qo/ThemeQo.java

@@ -23,7 +23,6 @@ public class ThemeQo implements Serializable {
     @ApiModelProperty(value = "主题ID")
     public String themeId;
 
-
     @ApiModelProperty(value = "被转发的主题")
     public String formerThemeId;
 
@@ -116,4 +115,8 @@ public class ThemeQo implements Serializable {
     @ApiModelProperty("工作室简介")
     private String workshopIntroduction;//工作室简介
 
+    // 搜索页用
+    // 使用关键词搜索时，在列表页展示的简要内容，内容带关键字.
+    public String briefContent4FullSearch;
+
 }

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

@@ -94,7 +94,6 @@ public class ThemeManager {
         ThemeFullSearchResp resp = new ThemeFullSearchResp();
 
         // 按时间倒叙查询
-        // todo redis
         List<ESThemeQo> esIds = esService.queryThemeIdByContentAndTitle(keyword, from, pageSize * 5);
         if (esIds.isEmpty()) {
             return resp;
@@ -105,7 +104,14 @@ public class ThemeManager {
             return !excludeIds.contains(tId);
         }).limit(pageSize).collect(Collectors.toList());
 
+        List<ThemeQo> themes = ConvertUtil.themeEntitiesToDTOs(themeService.queryByThemeIds(filterEsIds));
+
         resp.themes = convertEntityToQo(themeService.queryByThemeIds(filterEsIds), userId);
+        // 截取关键词出现的那一部分段落
+        for (ThemeQo theme : resp.themes) {
+            theme.briefContent4FullSearch = BizUtils.getThemeContent(keyword, theme);
+        }
+
         resp.excludeIds.addAll(filterEsIds);
 
         return resp;

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

 package com.tanpu.community.util;
 
 import com.alibaba.fastjson.JSON;
+import com.tanpu.community.api.beans.qo.ThemeContentQo;
+import com.tanpu.community.api.beans.qo.ThemeQo;
+import com.tanpu.community.api.enums.RelTypeEnum;
 import org.apache.commons.lang3.StringUtils;
 
 import java.util.ArrayList;
@@ -15,4 +18,23 @@ public class BizUtils {
         int realEnd = Math.min(start + size, list.size());
         return list.subList(start, realEnd);
     }
+
+    public static String getThemeContent(String keyword, ThemeQo theme) {
+        for (ThemeContentQo paragraph : theme.content) {
+            if (paragraph.getType().equals(RelTypeEnum.TEXT.type)) {
+                int idx = paragraph.getValue().indexOf(keyword);
+
+                if (idx == -1) {
+                    continue;
+                } else if (idx < 30) {
+                    // 如果关键词在段落偏头部的部分，则全部返回给前端，前端自由展示
+                    return paragraph.getValue();
+                } else {
+                    // 否则，保留关键词 向前20个字符
+                    return paragraph.getValue().substring(idx - 20);
+                }
+            }
+        }
+        return "";
+    }
 }