【fix sonar】SpringContextUtils文件

jero-boot/jero-boot-base/jero-boot-base-core/src/main/java/com/jero/common/util/SpringContextUtils.java

@@ -1,7 +1,5 @@
 package com.jero.common.util;
 
-import javax.servlet.http.HttpServletRequest;
-
 import com.jero.common.constant.ServiceNameConstants;
 import org.springframework.beans.BeansException;
 import org.springframework.context.ApplicationContext;
@@ -10,6 +8,9 @@ import org.springframework.stereotype.Component;
 import org.springframework.web.context.request.RequestContextHolder;
 import org.springframework.web.context.request.ServletRequestAttributes;
 
+import javax.servlet.http.HttpServletRequest;
+import java.util.Objects;
+
 @Component
 public class SpringContextUtils implements ApplicationContextAware {
 
@@ -20,7 +21,11 @@ public class SpringContextUtils implements ApplicationContextAware {
 
 	@Override
 	public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
-		SpringContextUtils.applicationContext = applicationContext;
+		synchronized (SpringContextUtils.class){
+			if(SpringContextUtils.applicationContext == null){
+				SpringContextUtils.applicationContext = applicationContext;
+			}
+		}
 	}
 
 	/**
@@ -36,7 +41,7 @@ public class SpringContextUtils implements ApplicationContextAware {
 	  * 获取HttpServletRequest
 	 */
 	public static HttpServletRequest getHttpServletRequest() {
-		return ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
+		return ((ServletRequestAttributes) Objects.requireNonNull(RequestContextHolder.getRequestAttributes())).getRequest();
 	}
 
 	/**
@@ -58,7 +63,7 @@ public class SpringContextUtils implements ApplicationContextAware {
 		HttpServletRequest request = getHttpServletRequest();
 		return request.getHeader("Origin");
 	}
-	
+
 	/**
 	 * 通过name获取 Bean.
 	 *