本篇随笔基于https://www.cnblogs.com/my-program-life/p/12067656.html 实现
一、使用Redis API进行业务数据缓存管理
在service下新建ApiCommentService,删除原有的CommentService
package com.uos.cache.service; import com.uos.cache.domain.Comment; import com.uos.cache.repository.CommentRepository; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.data.redis.core.RedisTemplate; import org.springframework.stereotype.Service; import java.util.Optional; import java.util.concurrent.TimeUnit; @Service public class ApiCommentService { @Autowired private RedisTemplate redisTemplate; @Autowired private CommentRepository commentRepository; public Comment findById(int comment_id){ Object object = redisTemplate.opsForValue().get("comment_"+comment_id); if (object!=null){ return (Comment)object;}else { Optional<Comment> optional = commentRepository.findById(comment_id); if(optional.isPresent()){Comment comment= optional.get(); redisTemplate.opsForValue().set("comment_"+comment_id, comment,1, TimeUnit.DAYS);return comment; }else {return null;} } } public Comment updateComment(Comment comment){ commentRepository.updateComment(comment.getAuthor(), comment.getaId()); redisTemplate.opsForValue().set("comment_"+comment.getId(),comment); return comment; } public void deleteComment(int comment_id){ commentRepository.deleteById(comment_id); redisTemplate.delete("comment_"+comment_id); } }
二、在controller层下新建ApiCommentController
删除原有的CommentController
package com.uos.cache.controller; import com.uos.cache.domain.Comment; import com.uos.cache.service.ApiCommentService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController @RequestMapping("/api") public class ApiCommentController { @Autowired private ApiCommentService apiCommentService; @GetMapping("/get/{id}") public Comment findById(@PathVariable("id") int comment_id){ Comment comment = apiCommentService.findById(comment_id); return comment; } @GetMapping("/update/{id}/{author}") public Comment updateComment(@PathVariable("id") int comment_id, @PathVariable("author") String author){ Comment comment = apiCommentService.findById(comment_id); comment.setAuthor(author); Comment updateComment = apiCommentService.updateComment(comment); return updateComment; } @GetMapping("/delete/{id}") public void deleteComment(@PathVariable("id") int comment_id){ apiCommentService.deleteComment(comment_id); } }
三、主程序类
四、效果测试
查询测试