1.implement journal filter

luoo_music/src/main/java/com/luoo/music/controller/JournalController.java

@@ -29,7 +29,6 @@ import com.luoo.music.pojo.Comment;
 import io.swagger.annotations.*;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.core.io.ClassPathResource;
-import org.springframework.data.domain.Page;
 import org.springframework.data.domain.PageRequest;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.mongodb.core.MongoTemplate;
@@ -127,7 +126,7 @@ public class JournalController {
 			queryReq.setPageNum(1);
 			queryReq.setPageSize(10);
 		}
-		Page<Journal> pageList = journalService.queryPage(queryReq);
+		List<Journal> pageList = journalService.queryPage(queryReq);
 		List<String> ids=pageList.stream().map(Journal::getId).collect(Collectors.toList());
 		Set<String> journalCollectSet = null == user ? Collections.emptySet()
 				: userCollectInfoService.getCollectSet(user.getUserId(),ids, CollectTypeEnum.JOURNAL);

luoo_music/src/main/java/com/luoo/music/dao/JournalTagDao.java

@@ -28,4 +28,7 @@ public interface JournalTagDao extends JpaRepository<JournalTag,String>, JpaSpec
     @Transactional
     @Query("DELETE FROM JournalTag jt WHERE jt.journalId = :journalId")
     int deleteByJournalId(@Param("journalId") String journalId);
+    
+    @Query(value = "select journal_id FROM tb_journal_tag where tag_id=(select id from tb_tag_info where level=?1 and name_ch=?2 limit 1)", nativeQuery = true)
+    List<String> getJournalIdByLevelAndChName(int level,String chName);
 }

luoo_music/src/main/java/com/luoo/music/dto/request/JournalQueryReq.java

@@ -12,10 +12,12 @@ import java.io.Serializable;
 @ApiModel
 public class JournalQueryReq implements Serializable {
 	private static final long serialVersionUID = -1198060864891902188L;
-	@ApiModelProperty(value = "筛选条件：风格")
+	@ApiModelProperty(value = "筛选条件：风格", example = "民谣")
 	private String style;
-	@ApiModelProperty(value = "筛选条件：语言")
+	@ApiModelProperty(value = "筛选条件：语言", example = "国语")
 	private String language;
+	@ApiModelProperty(value = "筛选条件：期刊号范围", example = "900~800")
+	private String journalNoRange;
 	@ApiModelProperty(value = "分页: 页码，以1开始，即获取最新的几期", example = "1")
 	private Integer pageNum = 1;
 	@ApiModelProperty(value = "分页: 每页数量", example = "10")

luoo_music/src/main/java/com/luoo/music/service/JournalService.java

@@ -1,5 +1,6 @@
 package com.luoo.music.service;
 
+import java.time.LocalDateTime;
 import java.util.*;
 import java.util.stream.IntStream;
 
@@ -9,6 +10,9 @@ import javax.persistence.criteria.Predicate;
 import javax.persistence.criteria.Root;
 
 import api.Result;
+
+import org.apache.commons.lang.StringUtils;
+import org.apache.commons.lang3.tuple.Pair;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.PageRequest;
@@ -19,6 +23,8 @@ import org.springframework.stereotype.Service;
 import util.IdWorker;
 
 import com.luoo.music.dao.JournalDao;
+import com.luoo.music.dao.JournalTagDao;
+import com.luoo.music.dao.TagDao;
 import com.luoo.music.dto.request.JournalQueryReq;
 import com.luoo.music.pojo.Journal;
 
@@ -36,8 +42,8 @@ public class JournalService {
 	
 	@Autowired
 	private IdWorker idWorker;
-
-
+	@Autowired
+	private  JournalTagDao journalTagDao;
 	@Autowired
 	private RedisTemplate redisTemplate;
 
@@ -152,29 +158,64 @@ public class JournalService {
 
 	}
 
-	public Page<Journal> queryPage(JournalQueryReq queryReq) {
-		Specification<Journal> specification = createJournalSpecification(queryReq);
+	public List<Journal> queryPage(JournalQueryReq queryReq) {
+		List<String> ids=getJournalIds(queryReq);
+		Pair<Integer,Integer> journalNoRange=getJournalNoRange(queryReq.getJournalNoRange());
+		Specification<Journal> specification = createJournalSpecification(ids,journalNoRange);
+		if(null==queryReq.getPageNum()||queryReq.getPageNum()<1||null==queryReq.getPageSize()||queryReq.getPageSize()<1) {
+			return journalDao.findAll(specification);
+		}
 		PageRequest pageRequest =  PageRequest.of(queryReq.getPageNum()-1, queryReq.getPageSize());
-		return journalDao.findAll(specification, pageRequest);
+		return journalDao.findAll(specification, pageRequest).getContent();
 	}
 
-	/**
-	 * 
-	 * as journal do not support style and langauge, only sort the result
-	 */
-	private Specification<Journal> createJournalSpecification(JournalQueryReq queryReq) {
+	private Specification<Journal> createJournalSpecification(List<String> ids, Pair<Integer, Integer> journalNoRange) {
 		return new Specification<Journal>() {
 			private static final long serialVersionUID = 1L;
 			@Override
-			public Predicate toPredicate(Root<Journal> root, CriteriaQuery<?> query, CriteriaBuilder cb) {
+			public Predicate toPredicate(Root<Journal> root, CriteriaQuery<?> query, CriteriaBuilder criteriaBuilder) {
 				List<Predicate> predicateList = new ArrayList<Predicate>();
-				query.orderBy(cb.desc(root.get("journalNo").as(Integer.class)));
-				return cb.and( predicateList.toArray(new Predicate[predicateList.size()]));
+				if(!ids.isEmpty()) {
+					predicateList.add(criteriaBuilder.in(root.get("id")).value(ids));
+				}
+				if(Objects.nonNull(journalNoRange)) {
+					predicateList.add(criteriaBuilder.greaterThanOrEqualTo(root.get("journalNo").as(Integer.class),
+							journalNoRange.getLeft()));
+					
+					predicateList.add(criteriaBuilder.lessThanOrEqualTo(root.get("journalNo").as(Integer.class),
+							journalNoRange.getRight()));
+					
+				}
+				query.orderBy(criteriaBuilder.desc(root.get("journalNo").as(Integer.class)));
+				return criteriaBuilder.and( predicateList.toArray(new Predicate[predicateList.size()]));
 			}
 		};
+	}
+
 
+	private Pair<Integer, Integer> getJournalNoRange(String range) {
+		if(StringUtils.isNotBlank(range)){
+			String[] segs=range.split("~");
+			int start=Integer.valueOf(segs[0]);
+			int end=Integer.valueOf(segs[1]);
+			return start<end?Pair.of(start, end):Pair.of(end, start);
+		}
+		return null;
 	}
 
+
+	private List<String> getJournalIds(JournalQueryReq queryReq) {
+		if(StringUtils.isNotBlank(queryReq.getLanguage())){
+			return journalTagDao.getJournalIdByLevelAndChName(2,queryReq.getLanguage());
+		}
+		if(StringUtils.isNotBlank(queryReq.getStyle())){
+			return journalTagDao.getJournalIdByLevelAndChName(1,queryReq.getStyle());
+		}
+		return Collections.emptyList();
+	}
+
+
+
 	public boolean isLatest10(String journalNo) {
 		return null!=journalDao.isLatest10(journalNo);
 	}

luoo_music/src/test/java/com/luoo/music/service/JournalSongServiceTest.java

@@ -10,6 +10,16 @@ import org.junit.Test;
 
 public class JournalSongServiceTest {
 
+	@Test
+	public void testJournalNoRange() {
+		String range="900~800";
+		String[] segs=range.split("~");
+		int start=Integer.valueOf(segs[0]);
+		int end=Integer.valueOf(segs[1]);
+		System.out.println(start);
+		System.out.println(end);
+	}
+	
 	@Test
 	public void testJournalNoList() {
 		getJournalNoList(100).forEach(System.out::println);