记录项目配置，修改配置项的获取方式

- new class ` CommonEnvPostProcessor `
- remove ` @value `
- make JwtUtil's method static

blog-common/src/main/java/cn/celess/common/util/EnvironmentUtil.java

@@ -0,0 +1,47 @@
+package cn.celess.common.util;
+
+import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.StringUtils;
+
+import java.util.Map;
+import java.util.Properties;
+
+@Slf4j
+public class EnvironmentUtil {
+
+    private static final Properties properties = new Properties();
+
+
+    public static String getEnv(String name) {
+        String value = System.getenv(name);
+        if (StringUtils.isBlank(value)) {
+            log.error("没有找到环境变量:" + name);
+        }
+        return value;
+    }
+
+    public static String getEnv(String name, String defaultValue) {
+        String env = getEnv(name);
+        if (env == null) {
+            return defaultValue;
+        }
+        return env;
+    }
+
+    public static String getProperties(String key) {
+        String value = properties.getProperty(key);
+        if (StringUtils.isBlank(value)) {
+            log.error("没有找到配置项: {}", key);
+        }
+        return value;
+    }
+
+    public static String getProperties(String key, String defaultValue) {
+        return properties.getProperty(key, defaultValue);
+    }
+
+
+    public static void addProperties(Map<?, ?> map) {
+        properties.putAll(map);
+    }
+}