【完善】：当镜像服务器连接错误使，默认使用非镜像地址下载

Author: SummerGift

cmds/cmd_package.py

@@ -250,17 +250,22 @@ def install_pkg(env_root, bsp_root, pkg):
     get_ver_sha = None
     upstream_change_flag = False
 
-    if os.path.isfile(env_config_file) and find_macro_in_config(env_config_file, 'SYS_PKGS_DOWNLOAD_ACCELERATE'):
-        get_package_url, get_ver_sha = get_url_from_mirror_server(pkgs_name_in_json, pkg['ver'])
+    try:
+        if os.path.isfile(env_config_file) and find_macro_in_config(env_config_file, 'SYS_PKGS_DOWNLOAD_ACCELERATE'):
+            get_package_url, get_ver_sha = get_url_from_mirror_server(pkgs_name_in_json, pkg['ver'])
 
-        #  determine whether the package package url is valid
-        if get_package_url != None and determine_url_valid(get_package_url):
-            package_url = get_package_url
+            #  determine whether the package package url is valid
+            if get_package_url != None and determine_url_valid(get_package_url):
+                package_url = get_package_url
 
-            if get_ver_sha != None:
-                ver_sha = get_ver_sha
+                if get_ver_sha != None:
+                    ver_sha = get_ver_sha
 
-            upstream_change_flag = True
+                upstream_change_flag = True
+
+    except Exception, e:
+        # print('e.message:%s\t' % e.message)
+        print("Failed to obtain mirror url, package will be downloaded from non-mirror server.")
 
     if package_url[-4:] == '.git':