springboot 使用官方工具类手动读取yml文件

最新推荐文章于 2024-12-27 18:04:48 发布

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最新推荐文章于 2024-12-27 18:04:48 发布 · 1.1k 阅读

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#spring boot #后端 #java

该博客主要介绍了如何使用Java读取和解析YAML格式的配置文件，将内容转换为Map，并进行层次化的扁平化处理。代码示例展示了从`application-dev1.yml`加载数据并打印结果，输出为键值对形式。

代码：

    //读取文件
	private Map<String, Object> getResource(String classPath) {
		ClassPathResource resource = new ClassPathResource(classPath);
		InputStream inputStream;
		Yaml yaml = new Yaml();
		Map<String, Object> res = new LinkedHashMap<>();
		try {
			inputStream = resource.getInputStream();
			BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
			Map<String, Object> map = yaml.load(reader);
			buildFlattenedMap(res, asMap(map), null);
		} catch (IOException e) {
			LOGGER.info("get input stream fail", e);
		}
		return res;
	}

    //转为map
	private Map<String, Object> asMap(Object object) {
		// YAML can have numbers as keys
		Map<String, Object> result = new LinkedHashMap<>();
		if (!(object instanceof Map)) {
			// A document can be a text literal
			result.put("document", object);
			return result;
		}

		Map<Object, Object> map = (Map<Object, Object>