从"Blog"仓库中分离出来
This commit is contained in:
小海
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package cn.celess.blog.service.serviceimpl;
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import cn.celess.blog.enmu.LevelEnum;
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import cn.celess.blog.enmu.ResponseEnum;
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import cn.celess.blog.entity.*;
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import cn.celess.blog.entity.model.ArticleModel;
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import cn.celess.blog.entity.request.ArticleReq;
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import cn.celess.blog.exception.MyException;
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import cn.celess.blog.mapper.ArticleMapper;
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import cn.celess.blog.mapper.CategoryMapper;
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import cn.celess.blog.mapper.CommentMapper;
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import cn.celess.blog.mapper.TagMapper;
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import cn.celess.blog.service.ArticleService;
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import cn.celess.blog.service.UserService;
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import cn.celess.blog.util.DateFormatUtil;
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import cn.celess.blog.util.RedisUserUtil;
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import cn.celess.blog.util.RegexUtil;
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import cn.celess.blog.util.StringFromHtmlUtil;
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import com.github.pagehelper.PageHelper;
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import com.github.pagehelper.PageInfo;
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import com.youbenzi.mdtool.tool.MDTool;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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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 org.springframework.transaction.annotation.Transactional;
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import javax.servlet.http.HttpServletRequest;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Date;
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import java.util.List;
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/**
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* @author : xiaohai
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* @date : 2019/03/28 15:21
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*/
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@Service
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public class ArticleServiceImpl implements ArticleService {
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public static final Logger logger = LoggerFactory.getLogger(ArticleServiceImpl.class);
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@Autowired
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ArticleMapper articleMapper;
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@Autowired
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TagMapper tagMapper;
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@Autowired
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CategoryMapper categoryMapper;
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@Autowired
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CommentMapper commentMapper;
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@Autowired
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UserService userService;
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@Autowired
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HttpServletRequest request;
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@Autowired
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RedisUserUtil redisUserUtil;
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@Override
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@Transactional(rollbackFor = Exception.class)
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public ArticleModel create(ArticleReq reqBody) {
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if (reqBody == null) {
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throw new MyException(ResponseEnum.PARAMETERS_ERROR);
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}
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//数据判断
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if (reqBody.getTitle() == null || reqBody.getTitle().replaceAll(" ", "").isEmpty()) {
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throw new MyException(ResponseEnum.PARAMETERS_ERROR);
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} else if (reqBody.getMdContent() == null || reqBody.getMdContent().replaceAll(" ", "").isEmpty()) {
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throw new MyException(ResponseEnum.PARAMETERS_ERROR);
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}
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//转载 判断链接
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if (!reqBody.getType()) {
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if (reqBody.getUrl() == null || reqBody.getUrl().replaceAll(" ", "").isEmpty()) {
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throw new MyException(ResponseEnum.PARAMETERS_ERROR);
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} else if (!RegexUtil.urlMatch(reqBody.getUrl())) {
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throw new MyException(ResponseEnum.PARAMETERS_URL_ERROR);
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}
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}
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if (reqBody.getCategory() == null || reqBody.getCategory().replaceAll(" ", "").isEmpty()) {
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throw new MyException(ResponseEnum.PARAMETERS_ERROR);
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}
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if (reqBody.getTags() == null || reqBody.getTags().replaceAll(" ", "").isEmpty()) {
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throw new MyException(ResponseEnum.PARAMETERS_ERROR);
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}
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//写入数据库的数据
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Article article = new Article();
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article.setTitle(reqBody.getTitle());
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article.setOpen(reqBody.getOpen());
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article.setMdContent(reqBody.getMdContent());
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article.setUrl(reqBody.getUrl());
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article.setType(reqBody.getType());
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article.setAuthorId(redisUserUtil.get(request).getId());
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article.setPublishDate(new Date());
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//防止出现 “null,xxx”这种情况
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article.setTagsId("");
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//是否需要更新上一篇文章
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boolean isUpdatePreArticle = true;
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Article preArticle = null;
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if (articleMapper.count() == 0) {
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isUpdatePreArticle = false;
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} else {
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//获取最新的一条数据
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preArticle = articleMapper.getLastestArticle();
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}
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if (isUpdatePreArticle) {
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logger.info("上一篇文章的id为：" + preArticle.getId());
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//设置上一篇文章的id
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article.setPreArticleId(preArticle.getId());
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}
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//markdown->html->summary
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String str = StringFromHtmlUtil.getString(MDTool.markdown2Html(article.getMdContent()));
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//获取摘要 摘要长度为255个字符
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String summary = str.length() > 240 ? str.substring(0, 240) + "......" : str;
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//去除转换后存在的空格
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String tagStr = reqBody.getTags().replaceAll(" ", "");
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article.setSummary(summary);
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if (articleMapper.existsByTitle(article.getTitle())) {
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throw new MyException(ResponseEnum.ARTICLE_HAS_EXIST);
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}
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//将分类写入数据库
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Category category1 = categoryMapper.findCategoryByName(reqBody.getCategory());
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if (category1 == null) {
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category1 = new Category();
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category1.setArticles("");
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category1.setName(reqBody.getCategory());
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categoryMapper.insert(category1);
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}
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article.setCategoryId(category1.getId());
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//文章存数据库
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articleMapper.insert(article);
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//获取新增的文章
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if (isUpdatePreArticle) {
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//更新上一篇文章的“下一篇文章ID”
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articleMapper.updateNextArticleId(preArticle.getId(), article.getId());
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}
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//无效
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// articleMapper.updatePreArticleId(article.getId(), preArticle == null ? -1 : preArticle.getId());
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article.setPreArticleId(preArticle == null ? -1 : preArticle.getId());
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category1.setArticles(category1.getArticles() + article.getId() + ",");
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categoryMapper.update(category1);
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//将标签写入数据库
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for (String t : tagStr.split(",")) {
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if (t.replaceAll(" ", "").length() == 0) {
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//单个标签只含空格
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continue;
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}
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Tag tag = tagMapper.findTagByName(t);
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if (tag == null) {
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tag = new Tag();
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tag.setName(t);
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tag.setArticles("");
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tagMapper.insert(tag);
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}
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tag.setArticles(tag.getArticles() + article.getId() + ",");
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article.setTagsId(article.getTagsId() + tag.getId() + ",");
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tagMapper.update(tag);
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}
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articleMapper.update(article);
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return fullTransform(articleMapper.getLastestArticle());
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}
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@Override
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@Transactional(rollbackFor = Exception.class)
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public boolean delete(long articleID) {
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Article articleForDel = articleMapper.findArticleById(articleID);
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if (articleForDel == null) {
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throw new MyException(ResponseEnum.ARTICLE_NOT_EXIST);//文章不存在
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}
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Article preArticle = articleMapper.findArticleById(articleForDel.getPreArticleId());
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Article nextArticle = articleMapper.findArticleById(articleForDel.getNextArticleId());
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//对访问情况进行判断 非博主/非自己文章 拒绝访问
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User user = redisUserUtil.get(request);
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if (!user.getRole().contains("admin") && !articleForDel.getAuthorId().equals(user.getId())) {
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throw new MyException(ResponseEnum.PERMISSION_ERROR);
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}
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//删除的文章处于中间位置
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if (nextArticle != null && preArticle != null) {
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//修改上一篇文章的“下一篇文章”y
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articleMapper.updateNextArticleId(articleForDel.getPreArticleId(), articleForDel.getNextArticleId());
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//修改下一篇文章的 “上一篇文章”
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articleMapper.updatePreArticleId(articleForDel.getNextArticleId(), articleForDel.getPreArticleId());
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}
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if (preArticle == null && nextArticle != null) {
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//删除的是第一篇文章
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articleMapper.updatePreArticleId(nextArticle.getId(), -1);
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}
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if (nextArticle == null && preArticle != null) {
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//删除的是最后一篇文章
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articleMapper.updateNextArticleId(preArticle.getId(), -1);
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}
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// delete count 为删除的数据数量
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int deleteCount = commentMapper.deleteByArticleId(articleID);
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//删除标签中的文章id
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String tag = articleForDel.getTagsId();
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if (tag.length() > 0) {
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String[] tags = tag.split(",");
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for (String t : tags) {
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if (t != null) {
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//查询标签
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Tag tag1 = tagMapper.findTagById(Long.parseLong(t));
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//去除标签中的articleId中的待删除的文章id
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String s = tag1.getArticles().replaceAll(articleForDel.getId() + ",", "");
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tag1.setArticles(s);
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tagMapper.update(tag1);
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}
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}
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}
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//删除分类中的文章id
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//获取文章的分类
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long categoryId = articleForDel.getCategoryId();
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Category category = categoryMapper.findCategoryById(categoryId);
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//删除文章id
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category.setArticles(category.getArticles().replaceAll(articleForDel.getId() + ",", ""));
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//更新
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categoryMapper.update(category);
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//删除指定文章
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articleMapper.delete(articleID);
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return true;
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}
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@Transactional(rollbackFor = Exception.class)
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@Override
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public ArticleModel update(ArticleReq reqBody) {
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if (reqBody == null) {
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throw new MyException(ResponseEnum.PARAMETERS_ERROR);
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}
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//数据判断
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if (reqBody.getTitle() == null || reqBody.getTitle().replaceAll(" ", "").isEmpty()) {
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throw new MyException(ResponseEnum.PARAMETERS_ERROR);
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} else if (reqBody.getMdContent() == null || reqBody.getMdContent().replaceAll(" ", "").isEmpty()) {
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throw new MyException(ResponseEnum.PARAMETERS_ERROR);
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}
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//转载 判断链接
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if (!reqBody.getType()) {
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if (reqBody.getUrl() == null || reqBody.getUrl().replaceAll(" ", "").isEmpty()) {
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throw new MyException(ResponseEnum.PARAMETERS_ERROR);
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} else if (!RegexUtil.urlMatch(reqBody.getUrl())) {
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throw new MyException(ResponseEnum.PARAMETERS_URL_ERROR);
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}
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}
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if (reqBody.getCategory() == null || reqBody.getCategory().replaceAll(" ", "").isEmpty()) {
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throw new MyException(ResponseEnum.PARAMETERS_ERROR);
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}
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// 暂时不更新tags
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// if (reqBody.getTags() == null || reqBody.getTags().replaceAll(" ", "").isEmpty()) {
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// throw new MyException(ResponseEnum.PARAMETERS_ERROR);
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// }
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//写入数据库的数据
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Article article = new Article();
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if (reqBody.getId() == null) {
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throw new MyException(ResponseEnum.PARAMETERS_ERROR.getCode(), "id不能为空");
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}
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article.setId(reqBody.getId());
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article.setTitle(reqBody.getTitle());
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article.setOpen(reqBody.getOpen());
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article.setMdContent(reqBody.getMdContent());
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article.setUrl(reqBody.getUrl());
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article.setType(reqBody.getType());
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Article oldArticle = articleMapper.findArticleById(reqBody.getId());
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Category category = categoryMapper.findCategoryById(oldArticle.getCategoryId());
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if (!(category.getName()).equals(reqBody.getCategory())) {
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//修改更新之前数据 的分类
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category.setArticles(category.getArticles().replace(reqBody.getId() + ",", ""));
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//更新
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categoryMapper.update(category);
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//更新 更新之后的分类
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Category category1 = categoryMapper.findCategoryByName(reqBody.getCategory());
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if (category1 == null) {
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category1 = new Category();
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category1.setName(reqBody.getCategory());
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category1.setArticles(reqBody.getId() + ",");
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categoryMapper.insert(category1);
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}
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article.setCategoryId(category1.getId());
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} else {
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article.setCategoryId(oldArticle.getCategoryId());
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}
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// String[] newTags = reqBody.getTags().replaceAll(" ", "").split(",");
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// //防止出现 ‘null2’这种情况
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// article.setTagsId("");
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// for (String t : newTags) {
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// Tag tag = tagMapper.findTagByName(t);
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// if (tag == null) {
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// tag = new Tag();
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// tag.setName(t);
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// tag.setArticles(oldArticle.getId() + ",");
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// tag = tagMapper.save(tag);
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// article.setTagsId(article.getTagsId() + tag.getId() + ",");
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// continue;
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// }
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// article.setTagsId(article.getTagsId() + tag.getId() + ",");
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// }
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// TODO:::: tag的更新
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article.setTagsId(oldArticle.getTagsId());
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article.setUpdateDate(new Date());
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// TODO::::换用beansUtil
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// 设置不定参数
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article.setReadingNumber(oldArticle.getReadingNumber());
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article.setPublishDate(oldArticle.getPublishDate());
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article.setAuthorId(redisUserUtil.get(request).getId());
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article.setPreArticleId(oldArticle.getPreArticleId());
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article.setNextArticleId(oldArticle.getNextArticleId());
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String str = StringFromHtmlUtil.getString(MDTool.markdown2Html(article.getMdContent()));
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article.setSummary(str.length() > 240 ? str.substring(0, 240) + "......" : str);
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articleMapper.update(article);
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//更新完成移除
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request.getSession().removeAttribute("article4update");
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return fullTransform(article);
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}
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@Override
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public ArticleModel retrieveOneByID(long articleID, boolean is4update) {
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Article article = articleMapper.findArticleById(articleID);
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if (article == null) {
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throw new MyException(ResponseEnum.ARTICLE_NOT_EXIST);
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}
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if (!article.getOpen()) {
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User user = redisUserUtil.getWithOutExc(request);
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if (user == null || "user".equals(user.getRole())) {
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throw new MyException(ResponseEnum.ARTICLE_NOT_PUBLIC);
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}
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}
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article.setReadingNumber(article.getReadingNumber() + 1);
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if (is4update) {
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//因更新而获取文章 不需要增加阅读量
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request.getSession().setAttribute("article4update", article);
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return fullTransform(article);
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}
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articleMapper.setReadingNumber(article.getReadingNumber() + 1, articleID);
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return fullTransform(article);
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}
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/**
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* @param count 数目
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* @param page 页面 默认减1
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* @return
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*/
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@Override
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public PageInfo adminArticles(int count, int page) {
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PageHelper.startPage(page, count);
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List<Article> articleList = articleMapper.findAll();
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PageInfo pageInfo = new PageInfo(articleList);
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pageInfo.setList(list2list(articleList, LevelEnum.BETWEEN_M_AND_H));
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return pageInfo;
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}
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@Override
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public PageInfo retrievePageForOpen(int count, int page) {
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PageHelper.startPage(page, count);
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List<Article> articleList = articleMapper.findAllByOpen(true);
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PageInfo pageInfo = new PageInfo(articleList);
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pageInfo.setList(list2list(articleList, LevelEnum.MIDDLE));
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return pageInfo;
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}
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@Override
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public PageInfo findByCategory(String name, int page, int count) {
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Long idByName = categoryMapper.getIDByName(name);
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if (idByName == null) {
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throw new MyException(ResponseEnum.CATEGORY_NOT_EXIST);
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}
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PageHelper.startPage(page, count);
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PageInfo pageInfo = new PageInfo(articleMapper.getSimpleInfoByCategory(idByName));
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return pageInfo;
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}
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@Override
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public PageInfo findByTag(String name, int page, int count) {
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Tag tag = tagMapper.findTagByName(name);
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if (tag == null) {
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throw new MyException(ResponseEnum.TAG_NOT_EXIST);
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}
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PageHelper.startPage(page, count);
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String[] split = tag.getArticles().split(",");
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List<String> list = Arrays.asList(split);
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List<Article> articleList = articleMapper.getSimpleInfoByTag(list);
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PageInfo pageInfo = new PageInfo(articleList);
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return pageInfo;
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}
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/**
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* page转换
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*
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* @param articleList 数据源
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* @param level 转换级别
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* @return list
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*/
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private List<ArticleModel> list2list(List<Article> articleList, LevelEnum level) {
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List<ArticleModel> content = new ArrayList<>();
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for (Article a : articleList) {
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ArticleModel model;
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switch (level.getLevelCode()) {
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case 0:
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model = simpleTransform(a);
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break;
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case 1:
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model = suitableTransform(a);
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break;
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case 2:
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model = suitableTransformForAdmin(a);
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break;
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case 3:
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default:
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model = fullTransform(a);
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}
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content.add(model);
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}
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return content;
|
||||
}
|
||||
|
||||
/**
|
||||
* 简单的模型转换
|
||||
* [id,title,summary]
|
||||
*
|
||||
* @param a 源数据
|
||||
* @return 模型
|
||||
*/
|
||||
private ArticleModel simpleTransform(Article a) {
|
||||
ArticleModel model = new ArticleModel();
|
||||
model.setId(a.getId());
|
||||
model.setTitle(a.getTitle());
|
||||
model.setSummary(a.getSummary());
|
||||
|
||||
return model;
|
||||
}
|
||||
|
||||
/**
|
||||
* 中等转换
|
||||
* [id,title,summary]
|
||||
* +
|
||||
* [original,tags,category]
|
||||
*
|
||||
* @param a
|
||||
* @return
|
||||
*/
|
||||
private ArticleModel suitableTransform(Article a) {
|
||||
ArticleModel model = simpleTransform(a);
|
||||
model.setAuthorName(userService.getNameById(a.getAuthorId()));
|
||||
model.setPublishDateFormat(DateFormatUtil.get(a.getPublishDate()));
|
||||
model.setOriginal(a.getType());
|
||||
model.setCategory(categoryMapper.getNameById(a.getCategoryId()));
|
||||
String[] split = a.getTagsId().split(",");
|
||||
String[] tags = new String[split.length];
|
||||
for (int i = 0; i < split.length; i++) {
|
||||
if (split[i] == null || "".equals(split[i])) {
|
||||
continue;
|
||||
}
|
||||
tags[i] = tagMapper.getNameById(Long.parseLong(split[i]));
|
||||
}
|
||||
model.setTags(tags);
|
||||
return model;
|
||||
}
|
||||
|
||||
/**
|
||||
* 中等转换 for admin页面
|
||||
* [id,title]
|
||||
* +
|
||||
* [original,UpdateDate,open,readingNumber]
|
||||
*
|
||||
* @param a
|
||||
* @return
|
||||
*/
|
||||
private ArticleModel suitableTransformForAdmin(Article a) {
|
||||
ArticleModel model = simpleTransform(a);
|
||||
model.setPublishDateFormat(DateFormatUtil.get(a.getPublishDate()));
|
||||
model.setUpdateDateFormat(DateFormatUtil.get(a.getUpdateDate()));
|
||||
model.setReadingNumber(a.getReadingNumber());
|
||||
model.setOpen(a.getOpen());
|
||||
model.setOriginal(a.getType());
|
||||
model.setSummary(null);
|
||||
return model;
|
||||
}
|
||||
|
||||
/**
|
||||
* 全转换
|
||||
* [id,title,summary,original,tags,category]
|
||||
* +
|
||||
* [UpdateDate,MdContent,NextArticleId,NextArticleTitle,preArticleId,preArticleTitle,open,url,readingNumber]
|
||||
*
|
||||
* @param a
|
||||
* @return
|
||||
*/
|
||||
private ArticleModel fullTransform(Article a) {
|
||||
ArticleModel model = suitableTransform(a);
|
||||
model.setUpdateDateFormat(DateFormatUtil.get(a.getUpdateDate()));
|
||||
model.setMdContent(a.getMdContent());
|
||||
model.setNextArticleId(a.getNextArticleId());
|
||||
model.setNextArticleTitle(a.getNextArticleId() == -1 ? "无" : articleMapper.getTitleById(a.getNextArticleId()));
|
||||
model.setPreArticleId(a.getPreArticleId());
|
||||
model.setPreArticleTitle(a.getPreArticleId() == -1 ? "无" : articleMapper.getTitleById(a.getPreArticleId()));
|
||||
model.setOpen(a.getOpen());
|
||||
model.setUrl(a.getUrl());
|
||||
model.setReadingNumber(a.getReadingNumber());
|
||||
return model;
|
||||
}
|
||||
|
||||
}
|
||||
Reference in New Issue
Block a user