Spring Boot实现文章分类和文章标签
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实现文章分类和文章标签
环境
以下是按照要求进行的同义改写
以下是对原文内容逐一进行同义改写的详细过程
博客功能
删除
//修改BlogController
@GetMapping("{id}/delete")
public String delete(@PathVariable Long id){
blogService.deleteById(id);
return "redirect:/admin/blogs";
} //修改IBlogService
void deleteById(Long id); //修改BlogServiceImpl
@Override
public void deleteById(Long id) {
blogDao.deleteById(id);
}新增
//修改BlogController
@GetMapping("input")
public String input(Model model){
model.addAttribute("blog",new Blog());
model.addAttribute("types",typeService.listType());
model.addAttribute("tags",tagService.listType());
return "admin/blogs-input";
}
@RequestMapping("add")
public String add(Blog blog, HttpSession session){
User user = (User) session.getAttribute("user");
blog.setUser(user);
String tagIds = blog.getTagIds();
List<Tag> tagList=tagService.getTagByIds(tagIds);
blog.setTags(tagList);
if(blog.getId()==null){
blogService.add(blog);
}else {
blogService.update(blog);
} //修改IBlogService
void add(Blog blog); //修改BlogServiceImpl
@Override
public void add(Blog blog) {
blog.setCreateTime(new Date());
blog.setUpdateTime(new Date());
blogDao.save(blog);
}
public void initTags(Long id) {
//3,4,5
List<Tag> tags = this.getTags();
StringBuffer ids=new StringBuffer();
if(!tags.isEmpty()){
Boolean flag=false;
for(Tag t:tags){
if(flag){
ids.append(t.getId());
flag=true;
}else {
ids.append(",");
ids.append(t.getId());
}
}
this.setTagIds(ids.toString());
}
} //修改TypeService
List<Type> listType(); //修改TypeServiceImpl
@Override
public List<Type> listType() {
return typeDao.findAll();
}修改
//修改BlogController
@RequestMapping("{id}/toUpdate")
public String toUpdate(@PathVariable Long id,Model model){
Blog blog=blogService.getBlog(id);
blog.initTags(id);
model.addAttribute("blog",blog);
model.addAttribute("types",typeService.listType());
model.addAttribute("tags",tagService.listType());
return "admin/blogs-input";
} //修改IBlogService
void update(Blog blog); //修改BlogServiceImpl
@Override
public void update(Blog blog) {
Blog one = blogDao.getOne(blog.getId());
BeanUtils.copyProperties(one,blog);
one.setUpdateTime(new Date());
blogDao.save(one);
} //修改TagService
List<Tag> getTagByIds(String tagIds); //修改TagServiceImpl
@Override
public List<Tag> getTagByIds(String tagIds) {
//3,4,5
List<Long> ids=new ArrayList<>();
if(tagIds !=null && tagIds != ""){
String[] s = tagIds.split(",");
for(int i=0;i<s.length;i++){
if(!StringUtils.isEmpty(s[i])){
ids.add(new Long(s[i]));
}
}
}分类
//完善BlogController的add方法
@RequestMapping("add")
public String add(Blog blog, HttpSession session){
User user = (User) session.getAttribute("user");
blog.setUser(user);
String tagIds = blog.getTagIds();
List<Tag> tagList=tagService.getTagByIds(tagIds);
blog.setTags(tagList);
if(blog.getId()==null){
blogService.add(blog);
}else {
blogService.update(blog);
}
return "redirect:/admin/blogs";
}搜索
//修改BlogController
@RequestMapping("search")
public String search(@PageableDefault(size = 5,sort = {"updataTime"},direction = Sort.Direction.DESC) Pageable pageable,
BlogQuery BlogQuery,Model model){
Page<Blog> page=blogService.listBlog(Pageable,BlogQuery);
model.addAttribute("page",page);
return "admin/blog::blogList";
} //修改IBlogService
Blog getBlog(Long id); //修改BlogServiceImpl
@Override
public Blog getBlog(Long id) {
return blogDao.getOne(id);
} //修改BlogService
Page<Blog> listBlog(Pageable pageable, BlogQuery blogQuery); //修改BlogServiceImpl
@Override
public Page<Blog> listBlog(Pageable pageable, BlogQuery blogQuery) {
Specification<Blog> specification=new Specification<Blog>() {
@Override
public Predicate toPredicate(Root<Blog> root, CriteriaQuery<?> criteriaQuery, CriteriaBuilder criteriaBuilder) {
List<Predicate> predicates=new ArrayList<>();
if(!StringUtils.isEmpty(blogQuery.getTitle())){
predicates.add(criteriaBuilder.like(root.<String>get("title"),"%"+blogQuery.getTitle()+"%"));
}
if(blogQuery.getTypeId()!=null){
predicates.add(criteriaBuilder.equal(root.<Type>get("type").get("id"),blogQuery.getTypeId()));
}
if(blogQuery.getRecommend()){
predicates.add(criteriaBuilder.equal(root.<Boolean>get("recommend"),blogQuery.getRecommend()));
}
criteriaQuery.where(predicates.toArray(new Predicate[predicates.size()]));
return null;
}
};
return blogDao.findAll(specification, pageable);
} //创建IndexController
@Controller
public class IndexController {
@Autowired
private IBlogService blogService;
@Autowired
private ITypeService typeService;
@Autowired
private ITagService tagService;
@RequestMapping("/")
public String index(@PageableDefault(size = 5,sort = {"updateTime"},direction = Sort.Direction.DESC)Pageable pageable,
Model model){
Page<Blog> page = blogService.listBlog(pageable);
List<Type> types=typeService.listTypeTop(6);
List<Tag> tags=tagService.listTypeTop(6);
List<Blog> blogs=blogService.listRecommendBlogTop(3);
model.addAttribute("page",page);
model.addAttribute("types",types);
model.addAttribute("tags",tags);
model.addAttribute("recommendBlogs",blogs);
return "index";
}
} //修改ITypeService
List<Tag> listTypeTop(int i); //修改TypeDao
@Query("select t from Type t")
List<Type> findTop(Pageable pageable); //修改BlogDao
@Query("select b from Blog b where b.recommend
List<Blog> findTop(Pageable pageable);全部评论 (0)
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