首页部分

ruoyi-system/src/main/java/com/ruoyi/system/mapper/MusicInfoMapper.java

@@ -64,4 +64,8 @@ public interface MusicInfoMapper
     MusicInfo selectByCate(CategoryInfo categoryInfo);
 
     List<MusicInfo> selectMusicInfoByCid(String categoryId);
+
+    List<MusicInfo> selectMusicInfoByIds(List<Long> musicIdList);
+
+    List<MusicInfo> selectRecommendMusic();
 }

ruoyi-system/src/main/java/com/ruoyi/system/mapper/RecommendInfoMapper.java

@@ -65,5 +65,5 @@ public interface RecommendInfoMapper
     int bindMusic(@Param("reId") String reId,@Param("musicIds") String[] musicIds);
 
 
-    RecommendInfo selectMusicRecommend();
+    List<RecommendInfo> selectMusicRecommend();
 }

ruoyi-system/src/main/java/com/ruoyi/system/service/IRecommendInfoService.java

@@ -1,5 +1,6 @@
 package com.ruoyi.system.service;
 
+import com.ruoyi.common.core.domain.entity.MusicInfo;
 import com.ruoyi.common.core.domain.entity.RecommendInfo;
 
 import java.util.List;
@@ -62,5 +63,7 @@ public interface IRecommendInfoService
 
     int bindMusic(String reId, String[] musicIds);
 
-    RecommendInfo findRecommendMusic();
+    List<MusicInfo> findRecommendMusic();
+
+    List<RecommendInfo> findRecommendBindMusic();
 }

ruoyi-system/src/main/java/com/ruoyi/system/service/impl/RecommendInfoServiceImpl.java

@@ -1,14 +1,21 @@
 package com.ruoyi.system.service.impl;
 
+import com.ruoyi.common.core.domain.entity.MusicInfo;
+import com.ruoyi.common.core.domain.entity.MusicRecommend;
 import com.ruoyi.common.core.domain.entity.RecommendInfo;
 import com.ruoyi.common.utils.DateUtils;
 import com.ruoyi.common.utils.SecurityUtils;
+import com.ruoyi.system.mapper.MusicInfoMapper;
+import com.ruoyi.system.mapper.MusicRecommendMapper;
 import com.ruoyi.system.mapper.RecommendInfoMapper;
 import com.ruoyi.system.service.IRecommendInfoService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
+import java.util.ArrayList;
 import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
 
 /**
  * 推荐Service业务层处理
@@ -21,6 +28,10 @@ public class RecommendInfoServiceImpl implements IRecommendInfoService
 {
     @Autowired
     private RecommendInfoMapper recommendInfoMapper;
+    @Autowired
+    private MusicRecommendMapper musicRecommendMapper;
+    @Autowired
+    private MusicInfoMapper musicInfoMapper;
 
     /**
      * 查询推荐
@@ -103,9 +114,25 @@ public class RecommendInfoServiceImpl implements IRecommendInfoService
     }
 
     @Override
-    public RecommendInfo findRecommendMusic() {
-        RecommendInfo recommendInfo = recommendInfoMapper.selectMusicRecommend();
-        
-        return null;
+    public  List<MusicInfo> findRecommendMusic() {
+       return musicInfoMapper.selectRecommendMusic();
+    }
+
+    @Override
+    public List<RecommendInfo> findRecommendBindMusic() {
+        List<MusicRecommend> musicRecommends = musicRecommendMapper.selectMusicRecommendList(new MusicRecommend());
+
+        Map<Long, List<MusicRecommend>> reMusicMap = musicRecommends.stream().collect(Collectors.groupingBy(MusicRecommend::getRecommendId));
+
+        List<RecommendInfo> result = new ArrayList<>();
+
+        reMusicMap.forEach((reId,rmcs) -> {
+            RecommendInfo recommendInfo = recommendInfoMapper.selectRecommendInfoById(reId);
+            List<Long> musicIdList = rmcs.stream().map(MusicRecommend::getMusicId).collect(Collectors.toList());
+            List<MusicInfo> musicInfos = musicInfoMapper.selectMusicInfoByIds(musicIdList);
+            recommendInfo.setMusics(musicInfos);
+            result.add(recommendInfo);
+        });
+        return result;
     }
 }

ruoyi-system/src/main/resources/mapper/system/MusicInfoMapper.xml

@@ -124,4 +124,15 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
     <select id="selectMusicInfoByCid" resultMap="MusicInfoResult">
         SELECT m.* FROM music_category mc left JOIN music_info m on mc.music_id = m.music_id WHERE mc.category_id = #{categoryId} and m.shelf=1 and m.is_del=0
     </select>
+
+    <select id="selectMusicInfoByIds" resultMap="MusicInfoResult">
+        SELECT * from music_info where music_info.music_id in
+        <foreach item="id" collection="collection" open="(" close=")" separator=",">
+            #{id}
+        </foreach>
+    </select>
+
+    <select id="selectRecommendMusic" resultMap="MusicInfoResult">
+        SELECT mi.* FROM music_recommend mr LEFT JOIN music_info mi on mr.music_id = mi.music_id and mi.is_del=0
+    </select>
 </mapper>

ruoyi-system/src/main/resources/mapper/system/RecommendInfoMapper.xml

@@ -16,7 +16,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
     </resultMap>
 
     <sql id="selectRecommendInfoVo">
-        select id, name, creator, modify, create_time, update_time, is_del, desc from recommend_info
+        select id, name, creator, modify, create_time, update_time, is_del, `desc` from recommend_info
     </sql>
 
     <select id="selectRecommendInfoList" parameterType="RecommendInfo" resultMap="RecommendInfoResult">
@@ -26,7 +26,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
             <if test="creator != null  and creator != ''"> and creator = #{creator}</if>
             <if test="modify != null  and modify != ''"> and modify = #{modify}</if>
             <if test="isDel != null "> and is_del = #{isDel}</if>
-            <if test="desc != null  and desc != ''"> and desc = #{desc}</if>
+            <if test="desc != null  and desc != ''"> and `desc` = #{desc}</if>
         </where>
     </select>
     
@@ -87,7 +87,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
     <insert id="bindMusic">
         insert into music_recommend(recommend_id,music_id) values
         <foreach item="id" collection="musicIds" separator=",">
-            (#{id},#{reId})
+            (#{reId},#{id})
         </foreach>
     </insert>