1

pom.xml

@@ -54,6 +54,14 @@
             <artifactId>sa-token-redis-jackson</artifactId>
             <version>1.40.0</version>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-redis</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-redis</artifactId>
+        </dependency>
 
 
 
@@ -68,11 +76,6 @@
             <artifactId>mysql-connector-j</artifactId>
             <scope>runtime</scope>
         </dependency>
-        <dependency>
-            <groupId>org.projectlombok</groupId>
-            <artifactId>lombok</artifactId>
-            <optional>true</optional>
-        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-test</artifactId>
@@ -95,6 +98,11 @@
             <version>3.0.4</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <scope>annotationProcessor</scope>
+        </dependency>
     </dependencies>
 
     <build>

src/main/java/com/example/demo/controller/LikeController.java

@@ -0,0 +1,37 @@
+package com.example.demo.controller;
+
+import com.example.demo.service.LikeService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+@RequestMapping("/api/auth")
+public class LikeController {
+    private final LikeService likeService;
+
+    @Autowired
+    public LikeController(LikeService likeService) {
+        this.likeService = likeService;
+    }
+
+    @PostMapping("/{targetId}")
+    public void like(@PathVariable("targetId") String targetId, @RequestHeader("userId") String userId) {
+        likeService.like(targetId, userId);
+    }
+
+    @DeleteMapping("/{targetId}")
+    public void unlike(@PathVariable("targetId") String targetId, @RequestHeader("userId") String userId) {
+        likeService.unlike(targetId, userId);
+    }
+
+    @GetMapping("/{targetId}/hasLiked")
+    public boolean hasLiked(@PathVariable("targetId") String targetId, @RequestHeader("userId") String userId) {
+        return likeService.hasLiked(targetId, userId);
+    }
+
+    @GetMapping("/{targetId}/count")
+    public long getLikeCount(@PathVariable("targetId") String targetId) {
+        return likeService.getLikeCount(targetId);
+    }
+
+}

src/main/java/com/example/demo/controller/NewsController.java

@@ -0,0 +1,45 @@
+package com.example.demo.controller;
+
+import com.example.demo.common.ResponseBean;
+import com.example.demo.mapper.ArticleMapper;
+import com.example.demo.mapper.NewsMapper;
+import com.example.demo.model.Article;
+import com.example.demo.model.News;
+import jakarta.annotation.Resource;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+@RequestMapping("/api/auth")
+
+public class NewsController {
+    @Resource
+    private NewsMapper newsMapper;
+
+
+
+    @PostMapping
+    public ResponseBean<Object> addUser(@RequestBody News news) {
+        int insert = newsMapper.insert(news);
+        return ResponseBean.success(insert);
+    }
+
+    @GetMapping
+    public News get(@RequestParam String title) {
+        return (News) newsMapper.selectById(title);
+    }
+
+
+    @DeleteMapping
+    public ResponseBean<Object> delete(@RequestParam String title) {
+        int insert = newsMapper.deleteById(title);
+        return ResponseBean.success(insert);
+    }
+
+    @PutMapping
+    public ResponseBean<Object> updateUser(@RequestBody News news) {
+
+        int update = newsMapper.updateById(news);
+        return ResponseBean.success(update);
+
+    }
+}

src/main/java/com/example/demo/mapper/NewsMapper.java

@@ -0,0 +1,10 @@
+package com.example.demo.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.example.demo.model.Article;
+import org.apache.ibatis.annotations.Mapper;
+
+@Mapper
+public interface NewsMapper extends BaseMapper {
+
+}

src/main/java/com/example/demo/model/News.java

@@ -0,0 +1,17 @@
+package com.example.demo.model;
+
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.Setter;
+
+@TableName("news")
+@Setter
+@Getter
+@AllArgsConstructor
+public class News {
+    private String title;
+    private String content;
+    private String author;
+    private String date;
+}

src/main/java/com/example/demo/service/LikeService.java

@@ -0,0 +1,36 @@
+package com.example.demo.service;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.stereotype.Service;
+
+@Service
+public class LikeService {
+    private final RedisTemplate<String, Object> redisTemplate;
+
+    @Autowired
+    public LikeService(RedisTemplate<String, Object> redisTemplate) {
+        this.redisTemplate = redisTemplate;
+    }
+
+    public void like(String targetId, String userId) {
+        // 使用集合记录点赞用户，防止重复点赞
+        redisTemplate.opsForSet().add(targetId + ":likes", userId);
+        // 点赞数自增，使用字符串存储点赞数，方便后续展示
+        redisTemplate.opsForValue().increment(targetId + ":likeCount", 1);
+    }
+    public void unlike(String targetId, String userId) {
+        redisTemplate.opsForSet().remove(targetId + ":likes", userId);
+        redisTemplate.opsForValue().decrement(targetId + ":likeCount", 1);
+    }
+    public boolean hasLiked(String targetId, String userId) {
+        return redisTemplate.opsForSet().isMember(targetId + ":likes", userId);
+    }
+    public long getLikeCount(String targetId) {
+        Long count = (Long) redisTemplate.opsForValue().get(targetId + ":likeCount");
+        return count == null? 0 : count;
+    }
+
+
+
+}