✨Feat: 根据 id 获取博客

src/main/java/cn/hezhaohui/thumb/controller/BlogController.java

@@ -0,0 +1,24 @@
+package cn.hezhaohui.thumb.controller;
+
+import cn.hezhaohui.thumb.common.BaseResponse;
+import cn.hezhaohui.thumb.common.ResultUtils;
+import cn.hezhaohui.thumb.model.vo.BlogVO;
+import cn.hezhaohui.thumb.service.BlogService;
+import jakarta.annotation.Resource;
+import jakarta.servlet.http.HttpServletRequest;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("blog")
+public class BlogController {
+    @Resource
+    private BlogService blogService;
+
+    @GetMapping("/get")
+    public BaseResponse<BlogVO> get(long blogId, HttpServletRequest request) {
+        BlogVO blogVO = blogService.getBlogVOById(blogId, request);
+        return ResultUtils.sucess(blogVO);
+    }
+}

src/main/java/cn/hezhaohui/thumb/model/vo/BlogVO.java

@@ -0,0 +1,23 @@
+package cn.hezhaohui.thumb.model.vo;
+
+import lombok.Data;
+
+import java.util.Date;
+
+@Data
+public class BlogVO {
+
+    private Long id;
+
+    private String title;
+
+    private String coverImg;
+
+    private String content;
+
+    private Integer thumbCount;
+
+    private Date createTime;
+
+    private Boolean hasThumb;
+}

src/main/java/cn/hezhaohui/thumb/service/BlogService.java

@@ -1,7 +1,9 @@
 package cn.hezhaohui.thumb.service;
 
 import cn.hezhaohui.thumb.model.entity.Blog;
+import cn.hezhaohui.thumb.model.vo.BlogVO;
 import com.baomidou.mybatisplus.extension.service.IService;
+import jakarta.servlet.http.HttpServletRequest;
 
 /**
 * @author 23117
@@ -10,4 +12,6 @@ import com.baomidou.mybatisplus.extension.service.IService;
 */
 public interface BlogService extends IService<Blog> {
 
+
+    BlogVO getBlogVOById(long blogId, HttpServletRequest request);
 }

src/main/java/cn/hezhaohui/thumb/service/UserService.java

@@ -11,5 +11,5 @@ import jakarta.servlet.http.HttpServletRequest;
 */
 public interface UserService extends IService<User> {
 
-    public User getLoginUser(HttpServletRequest request);
+    User getLoginUser(HttpServletRequest request);
 }

src/main/java/cn/hezhaohui/thumb/service/impl/BlogServiceImpl.java

@@ -1,9 +1,18 @@
 package cn.hezhaohui.thumb.service.impl;
 
+import cn.hezhaohui.thumb.model.entity.Thumb;
+import cn.hezhaohui.thumb.model.entity.User;
+import cn.hezhaohui.thumb.model.vo.BlogVO;
+import cn.hezhaohui.thumb.service.ThumbService;
+import cn.hezhaohui.thumb.service.UserService;
+import cn.hutool.core.bean.BeanUtil;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import cn.hezhaohui.thumb.model.entity.Blog;
 import cn.hezhaohui.thumb.service.BlogService;
 import cn.hezhaohui.thumb.mapper.BlogMapper;
+import jakarta.annotation.Resource;
+import jakarta.servlet.http.HttpServletRequest;
+import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Service;
 
 /**
@@ -15,6 +24,40 @@ import org.springframework.stereotype.Service;
 public class BlogServiceImpl extends ServiceImpl<BlogMapper, Blog>
     implements BlogService{
 
+    @Resource
+    private UserService userService;
+
+    @Resource
+    @Lazy
+    private ThumbService thumbService;
+
+    public BlogServiceImpl(UserService userService) {
+        this.userService = userService;
+    }
+
+    @Override
+    public BlogVO getBlogVOById(long blogId, HttpServletRequest request) {
+        Blog blog = this.getById(blogId);
+        User loginUser = userService.getLoginUser(request);
+        return this.getBlogVO(blog, loginUser);
+    }
+
+    private BlogVO getBlogVO(Blog blog, User loginUser) {
+        BlogVO blogVO = new BlogVO();
+        BeanUtil.copyProperties(blog, blogVO);
+
+        if (loginUser == null) {
+            return blogVO;
+        }
+
+        Thumb thumb = thumbService.lambdaQuery()
+                .eq(Thumb::getUserid, loginUser.getId())
+                .eq(Thumb::getBlogId, blog.getId())
+                .one();
+        blogVO.setHasThumb(thumb != null);
+
+        return blogVO;
+    }
 }