From c16f137dc6e95395721f19f61c2eab164b28201c Mon Sep 17 00:00:00 2001 From: "rong.liu" Date: Tue, 21 Mar 2023 17:20:05 +0800 Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0=E5=88=86=E5=B8=83=E5=BC=8F?= =?UTF-8?q?=E9=94=81=E8=A7=A3=E5=86=B3=E5=A4=9A=E7=94=A8=E6=88=B7=E5=90=8C?= =?UTF-8?q?=E6=97=B6=E6=93=8D=E4=BD=9C=E6=8E=92=E5=BA=8F=E6=83=85=E5=86=B5?= =?UTF-8?q?=E4=B8=8B=E5=BA=8F=E5=8F=B7=E6=B7=B7=E4=B9=B1=E7=9A=84=E9=97=AE?= =?UTF-8?q?=E9=A2=98=E3=80=82?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../iasf/controller/SysContentController.java | 7 +- .../service/impl/SysContentServiceImpl.java | 146 +++++++++++++----- 2 files changed, 114 insertions(+), 39 deletions(-) diff --git a/src/main/java/com/huoran/iasf/controller/SysContentController.java b/src/main/java/com/huoran/iasf/controller/SysContentController.java index 55ede0f..d666c59 100644 --- a/src/main/java/com/huoran/iasf/controller/SysContentController.java +++ b/src/main/java/com/huoran/iasf/controller/SysContentController.java @@ -90,7 +90,10 @@ public class SysContentController { queryWrap.eq("column_id", sysContent.getColumnId()); queryWrap.eq("deleted", 1); Integer count = service.count(queryWrap); - sysContent.setSequence(count++); + if (count == 0) { + count = 1; + } + sysContent.setSequence(count + 1); boolean addState = service.save(sysContent); @@ -265,7 +268,6 @@ public class SysContentController { public R modifiedSort( @ApiParam(name = "sequenceNumber", value = "要排序的序号", required = true) @RequestParam Integer sequenceNumber, @ApiParam(name = "articleId", value = "文章Id", required = true) @RequestParam Integer articleId) { - return service.modifiedSort(sequenceNumber, articleId); } @@ -293,6 +295,7 @@ public class SysContentController { QueryWrapper queryWrap1 = new QueryWrapper<>(); queryWrap1.eq("column_id", columnId); queryWrap1.eq("deleted", 1); + queryWrap1.orderByDesc("release_time"); List list = service.list(queryWrap1); Integer count = 0; diff --git a/src/main/java/com/huoran/iasf/service/impl/SysContentServiceImpl.java b/src/main/java/com/huoran/iasf/service/impl/SysContentServiceImpl.java index 5f2b9ed..248aeda 100644 --- a/src/main/java/com/huoran/iasf/service/impl/SysContentServiceImpl.java +++ b/src/main/java/com/huoran/iasf/service/impl/SysContentServiceImpl.java @@ -14,11 +14,15 @@ import com.huoran.iasf.vo.req.ArticleModifiedSortReq; import com.huoran.iasf.vo.req.ContentHeavyTitleReqVO; import com.huoran.iasf.vo.req.PageContentReqVO; import com.huoran.iasf.vo.resp.PageContentRespVO; +import org.springframework.data.redis.core.RedisTemplate; import org.springframework.data.redis.core.StringRedisTemplate; import org.springframework.stereotype.Service; import org.springframework.beans.factory.annotation.Autowired; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; import java.util.*; +import java.util.concurrent.TimeUnit; /** * @描述：文章管理 服务类 @@ -28,6 +32,7 @@ import java.util.*; @Service public class SysContentServiceImpl extends ServiceImpl implements SysContentService { + private final static Logger logger = LoggerFactory.getLogger(SysContentServiceImpl.class); @Autowired private SysContentMapper mapper; @@ -148,60 +153,127 @@ public class SysContentServiceImpl extends ServiceImpl updateWrapper = new UpdateWrapper<>(); + updateWrapper.set("sequence", sequenceNumber); + updateWrapper.eq("id", articleId); + //做乐观锁处理 + updateWrapper.eq("sequence", currentSerialNumber); + int updateCount = baseMapper.update(new SysContent(), updateWrapper); + + UpdateWrapper updateWrapper1 = new UpdateWrapper<>(); + updateWrapper1.ne("id", articleId); + //currentSerialNumber 当前文章的序号 + //sequenceNumber 要更改的序号 + + /** + * 就要判断排序是值改小还是改大 + * 大改小比如53改5那就加一个语句“大于等于5并且小于53” + * 如果是小改大比如3改50那就是“大于3并且小于等于50" + */ + if (currentSerialNumber > sequenceNumber) { + //改大 gt > + updateWrapper1.setSql(" sequence = sequence + 1"); + updateWrapper1.last(" and sequence >= " + sequenceNumber + " and sequence < " + currentSerialNumber); + } else if (currentSerialNumber < sequenceNumber) { + //改小 + //le为<= +// updateWrapper1.le("sequence", sequenceNumber); + updateWrapper1.setSql(" sequence = sequence - 1"); + updateWrapper1.last(" and sequence > " + currentSerialNumber + " and sequence <= " + sequenceNumber); + //用于判断序号为本身就为1时候就不减了 +// updateWrapper1.ne("sequence", 1); + } + + updateWrapper1.eq("column_id", columnId); + updateWrapper1.eq("deleted", 1); + baseMapper.update(new SysContent(), updateWrapper1); + redisTemplate.delete("articleSortLock"); //删除key，释放锁 + return R.success(); + } else { + return R.fail("当前有用户操作排序，请稍后刷新重试!"); } - SysContent content = baseMapper.selectById(articleId); + } + + /*@Override + public R modifiedSort(Integer newIndex, Integer articleId,Integer sort) { + if (newIndex <= 0) { + return R.fail("请输入正确的序号!"); + } //获取当前排序的序号 - Integer currentSerialNumber = content.getSequence(); + SysContent content = baseMapper.selectById(articleId); //获取当前文章所属栏目id Integer columnId = content.getColumnId(); - - //获取栏目下全部文章的数量与当前输入的序号判断 如果要更改的序号大于当前有的数量，直接替换 + //查看当前升序情况下全部文章信息 QueryWrapper queryWrapper = new QueryWrapper<>(); queryWrapper.eq("column_id", columnId); queryWrapper.eq("deleted", 1); - List contentList = baseMapper.selectList(queryWrapper); - if (sequenceNumber >= contentList.size()) { - sequenceNumber = contentList.size(); - } + if (sort==0){ + queryWrapper.orderByAsc("sequence"); + }else if (sort==1){ + queryWrapper.orderByDesc("sequence"); + } - if (currentSerialNumber.equals(sequenceNumber)) { + List contentList = baseMapper.selectList(queryWrapper); + //获取当前序号在list中的顺序 + int currentIndex = contentList.indexOf(content); + //获取当前排序的序号 + Integer currentSerialNumber = content.getSequence(); + if (currentIndex == -1) { + // 文章不存在，不做任何操作 return R.success(); } + //对于传过来的序号 处理用于匹配集合的下标 + if (currentSerialNumber > newIndex) { + newIndex--; + }else { + newIndex++; + } - - //修改当前序号 - UpdateWrapper updateWrapper = new UpdateWrapper<>(); - updateWrapper.set("sequence", sequenceNumber); - updateWrapper.eq("id", articleId); - baseMapper.update(new SysContent(), updateWrapper); - - UpdateWrapper updateWrapper1 = new UpdateWrapper<>(); - updateWrapper1.ne("id", articleId); - // 序号越小值越算大 - //currentSerialNumber 当前文章的序号 - //sequenceNumber 要更改的序号 - if (currentSerialNumber > sequenceNumber) { - //改大 gt > - updateWrapper1.setSql(" sequence = sequence + 1"); - updateWrapper1.last(" and sequence >= " + sequenceNumber + " and sequence < " + currentSerialNumber); - } else if (currentSerialNumber < sequenceNumber) { - //改小 - updateWrapper1.le("sequence", sequenceNumber); - updateWrapper1.setSql(" sequence = sequence - 1"); - //用于判断序号为本身就为1时候就不减了 - updateWrapper1.ne("sequence", 1); + if (currentIndex == newIndex) { + // 新旧位置相同，不做任何操作 + return R.success(); + } + // 移除当前位置的文章 + contentList.remove(content); + if (newIndex >= contentList.size()) { + // 插入到末尾 + contentList.add(content); + } else { + // 插入到新位置 + contentList.add(newIndex, content); } + for (int i = 0; i < contentList.size(); i++) { + SysContent article = contentList.get(i); + article.setSequence(i + 1); + baseMapper.updateById(article); + } + - updateWrapper1.eq("column_id", columnId); - updateWrapper1.eq("deleted", 1); - baseMapper.update(new SysContent(), updateWrapper1); return R.success(); - } + }*/ }