这篇文章主要介绍了如何基于JAVA读取yml配置文件指定key内容,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下
先引入需要的依赖
<!--读取yml文件--> <dependency> <groupId>org.yaml</groupId> <artifactId>snakeyaml</artifactId> <version>1.23</version> </dependency>
读取YML文件工具类的代码
import org.apache.commons.lang3.StringUtils;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.util.ResourceUtils;import org.yaml.snakeyaml.Yaml;import java.io.*;import java.util.HashMap;import java.util.Map;import java.util.Set;/** * @author hunmeng * @create 2020-01-10 20:34 */public class YmlUtils { private static final Logger LOGGER = LoggerFactory.getLogger(YmlUtils.class); private static String bootstrap_file = "classpath:application-test.yml"; private static Map<String,String> result = new HashMap<>(); /** * 根据文件名获取yml的文件内容 * @param filePath * @param keys 第一个参数对应第一个key，第二个参数对应第二个key 比如spring.name下的所有 就是两个参数、 * getYmlByFileName(bootstrap_file,"spring", "name"); * @return */ public static Map<String,String> getYmlByFileName(String filePath, String... keys) { result = new HashMap<>(); if(filePath == null) filePath = bootstrap_file; InputStream in = null; try { File file = ResourceUtils.getFile(filePath); in = new BufferedInputStream(new FileInputStream(file)); Yaml props = new Yaml(); Object obj = props.loadAs(in,Map.class); Map<String,Object> param = (Map<String, Object>) obj; for(Map.Entry<String,Object> entry:param.entrySet()){ String key = entry.getKey(); Object val = entry.getValue(); if (keys.length != 0 && !keys[0].equals(key)){ continue; } if(val instanceof Map){ forEachYaml(key,(Map<String, Object>) val, 1, keys); }else{ result.put(key, val.toString()); } } return result; } catch (FileNotFoundException e) { LOGGER.error(e.getMessage(),e); }finally { if (in != null){ try { in.close(); } catch (IOException e) { LOGGER.error(e.getMessage(),e); } } } return null; } /** * 根据key获取值 * @param key * @return */ public static String getValue(String key) throws FileNotFoundException { Map<String,String> map = getYmlByFileName(null); if(map==null)return null; return map.get(key); } /** * 遍历yml文件，获取map集合 * @param key_str * @param obj * @param i * @param keys * @return */ public static Map<String,String> forEachYaml(String key_str,Map<String, Object> obj, int i, String... keys){ for(Map.Entry<String,Object> entry:obj.entrySet()){ String key = entry.getKey(); Object val = entry.getValue(); if (keys.length > i && !keys[i].equals(key)){ continue; } String str_new = ""; if(StringUtils.isNotEmpty(key_str)){ str_new = key_str+ "."+key; }else{ str_new = key; } if(val instanceof Map){ forEachYaml(str_new,(Map<String, Object>) val, ++i, keys); i--; }else{ result.put(str_new,val.toString()); } } return result; } /** * 获取bootstrap.yml的name * @return */ public static String getApplicationName() throws FileNotFoundException { return getYmlByFileName(bootstrap_file).get("server.port"); } /** * 获取bootstrap.yml的name * @return */ public static String getApplicationName1() throws FileNotFoundException { String name = getYmlByFileName(bootstrap_file).get("spring.application.name"); return name + "center"; } public static void main(String[] args) throws FileNotFoundException { Map<String, String> ymlByFileName = getYmlByFileName(bootstrap_file,"spring"); Set<Map.Entry<String, String>> entries = ymlByFileName.entrySet(); for (Map.Entry<String, String> entry : entries) { System.out.println(entry.getKey()+"==="+entry.getValue()); } System.out.println(getApplicationName()); }}
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。
本文标题: 如何基于JAVA读取yml配置文件指定key内容
以上就上有关如何基于JAVA读取yml配置文件指定key内容的相关介绍，要了解更多JAVA,读取,yml,配置文件内容请登录学步园。