需求

src/main/java/com/huiju/estateagents/redpack/entity/TaRedPacketHistory.java

 package com.huiju.estateagents.redpack.entity;
 
 import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableField;
 import com.baomidou.mybatisplus.annotation.TableId;
-import java.time.LocalDateTime;
-import java.io.Serializable;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.experimental.Accessors;
 
+import java.io.Serializable;
+import java.time.LocalDateTime;
+
 /**
  * <p>
  * 红包助力人员列表 
      */
     private LocalDateTime createDate;
 
+    @TableField(exist = false)
+    private Integer helpPersonNum;
+
+    @TableField(exist = false)
+    private String nickname;
 
+    @TableField(exist = false)
+    private String avatarurl;
 }

src/main/java/com/huiju/estateagents/redpack/mapper/TaRedPacketHistoryMapper.java

 import org.apache.ibatis.annotations.Param;
 import org.springframework.stereotype.Component;
 
+import java.util.List;
+
 /**
  * <p>
  * 红包助力人员列表  Mapper 接口
 
     IPage<TaRedPacketHistory> listHistoryByCondition(IPage<TaRedPacketHistory> page,
                                                      @Param("activityId") String activityId);
+
+    /**
+     * 获取助力排行榜
+     * @param activityId
+     * @param orgId
+     * @return
+     */
+    List<TaRedPacketHistory> getRanking(String activityId, Integer orgId);
 }

src/main/java/com/huiju/estateagents/third/service/impl/TaThirdPartyMiniappConfigServiceImpl.java

 	/**
 	 * 获取活动排行榜
 	 *
-	 * @param targetId
+	 * @param drainageId
 	 * @param orgId
 	 * @return
 	 */
 	@Override
-	public ResponseBean getRanking(String targetId, Integer orgId) {
-
-		return null;
+	public ResponseBean getRanking(String drainageId, Integer orgId) {
+		//第一步根据drainggeid查询出红包表对应的记录
+		TaDrainage taDrainage = taDrainageMapper.selectById(drainageId);
+		//第二步查询出这个H5对应的活动
+		List<TaRedPacketHistory> taRedPacketHistoryList = taRedPacketHistoryMapper.getRanking(taDrainage.getActivityId(),orgId);
+		return ResponseBean.success(taRedPacketHistoryList);
 	}
 
 	/**

src/main/resources/mapper/redpack/TaRedPacketHistoryMapper.xml

 <mapper namespace="com.huiju.estateagents.redpack.mapper.TaRedPacketHistoryMapper">
 
 
-
+    <select id="getRanking" resultType="com.huiju.estateagents.redpack.entity.TaRedPacketHistory">
+        SELECT
+        t.helpPersonNum as help_person_num,
+        t.target_miniapp_person,
+        p.nickname,
+        p.avatarurl
+        FROM
+        ( SELECT count( 1 ) AS helpPersonNum, target_miniapp_person FROM ta_red_packet_history WHERE activity_id = #{activityId} AND org_id = #{orgId} GROUP BY target_miniapp_person ) t
+        LEFT JOIN ta_person p ON t.target_miniapp_person = p.person_id
+        ORDER BY
+        t.helpPersonNum DESC
+    </select>
 </mapper>