删除comment
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@ -43,4 +43,6 @@ public interface CommentDao {
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*/
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List<CommentNode> querySecondCommentList(Integer UrlId);
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public String queryChildId(String commentId);
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}
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@ -26,4 +26,6 @@ public interface CommentService {
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List<CommentNode> queryCommentByUrlId (Integer UrlId );
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CommentUser queryCommentUserById(Integer id);
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public String SelectChildAndDelete(String commentId);
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}
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@ -10,6 +10,7 @@ import com.lovenav.entity.CommentUser;
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import com.lovenav.entity.User;
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import com.lovenav.service.CommentService;
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import io.swagger.models.auth.In;
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import org.checkerframework.checker.units.qual.C;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Service;
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import java.util.HashMap;
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@ -169,5 +170,21 @@ public class CommentServiceImpl implements CommentService {
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}
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return firstList;
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}
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public String SelectChildAndDelete(String commentId)
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{
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String child = commentDao.queryChildId(commentId);
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String [] childrens = child.split(",");
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int flag = 0;
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for(String id : childrens)
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{
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flag = commentDao.deleteByPrimaryKey(Integer.valueOf(id));
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if (String.valueOf(flag).equals("0")){
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return "出现错误";
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}
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}
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return "处理完成";
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}
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}
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@ -55,6 +55,19 @@
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delete from ln_comment
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where id = #{id,jdbcType=INTEGER}
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</delete>
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<select id="queryChildId" parameterType="java.lang.String" resultType="java.lang.String">
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SELECT t3.ischild
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FROM(SELECT t1.*,
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IF (FIND_IN_SET(root_comment_id, @pids) > 0,@pids := CONCAT(@pids, ',', id),'0') AS ischild
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FROM(SELECT t.id,t.root_comment_id
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FROM ln_comment AS t
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ORDER BY t.id ASC) t1,
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(SELECT @pids := #{commentId,jdbcType=INTEGER}) t2) t3
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WHERE ischild != '0'
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</select>
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<insert id="insert" keyColumn="id" keyProperty="id" parameterType="com.lovenav.entity.Comment" useGeneratedKeys="true">
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insert into ln_comment (url_id, user_id, content,
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root_comment_id, like_count, comment_time,
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