做项目中的一些小经验，方便后续

（1）前端代码中，请求的 URL 是通过查询参数（?id=${articleId}）传递的

后端接口：

@GetMapping("/knowledgeDetail")
public Result getKnowledgeByid(@RequestParam Integer id) {
    Knowledge knowledge = knowledgeService.getKnowledgeByid(id);
    return Result.success(knowledge);
}

(2) 前端代码这样传递参数

url: `${baseUrl}/knowledge/knowledgeDetail/${articleId}`

后端接口：

@GetMapping("/knowledgeDetail/{id}")
public Result getKnowledgeByid(@PathVariable Integer id) {
    Knowledge knowledge = knowledgeService.getKnowledgeByid(id);
    if (knowledge == null) {
        return Result.error("Knowledge not found");
    }
    return Result.success(knowledge);
}