添加了lib

pom.xml

@@ -94,6 +94,13 @@
             <artifactId>jpa-spec</artifactId>
             <version>3.1.1</version>
         </dependency>
+        <dependency>
+            <groupId>com.sun</groupId>
+            <artifactId>tools</artifactId>
+            <version>1.8</version>
+            <scope>system</scope>
+            <systemPath>${java.home}/../lib/tools.jar</systemPath>
+        </dependency>
     </dependencies>
 
     <build>

src/main/java/com/tykj/base/util/YmlUtils.java

+package com.tykj.base.util;
+
+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.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) {
+            if(entry.getKey().equals("spring.datasource.driver-class-name")){
+                if(entry.getValue().contains("com.mysql.cj.jdbc.Driver")||entry.getValue().contains("com.mysql.jdbc.Driver")){
+                    System.out.println(111);
+                }
+            }
+        }
+    }
+
+
+}