【转载】系统设计 | 如何管理应用系统中的配置？

@RestController
    @RequestMapping("/business-rules")
    public class BusinessRulesController {
    
        private final ResourceLoader resourceLoader;
    
        @Autowired
        public BusinessRulesController(ResourceLoader resourceLoader) {
            this.resourceLoader = resourceLoader;
        }
    
        @GetMapping("/{name}")
        public ResponseEntity<String> getBusinessRule(@PathVariable String name) {
            try {
                String ruleFileName = name + ".yaml";
                Resource resource = resourceLoader.getResource("classpath:business-rules/" + ruleFileName);
                if (resource.exists()) {
                    String content = new String(Files.readAllBytes(Paths.get(resource.getURI())), StandardCharsets.UTF_8);
                    return ResponseEntity.ok().body(content);
                } else {
                    return ResponseEntity.notFound().build();
                }
            } catch (IOException e) {
                return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body("Error reading business rule");
            }
        }
    }

// 创建ObjectMapper实例，用于读取YAML和生成JSON
    ObjectMapper objectMapper = new ObjectMapper(new YAMLFactory());
    
    // 从YAML文件中读取数据并转换为Java对象
    Object yamlObject = objectMapper.readValue(new File(yamlFilePath), Object.class);
    
    // 将Java对象转换为JSON字符串
    String json = objectMapper.writeValueAsString(yamlObject);

// 创建 YAMLMapper 实例
    YAMLMapper yamlMapper = new YAMLMapper();
    
    // 从 YAML 文件中读取数据并转换为 Java 对象
    Object yamlObject = yamlMapper.readValue(new File(yamlFilePath), Object.class);
    
    // 创建 ObjectMapper 实例用于生成 JSON
    ObjectMapper objectMapper = new ObjectMapper();
    
    // 将 Java 对象转换为 JSON 字符串
    String json = objectMapper.writeValueAsString(yamlObject);