无法连接数据库:Connection refused

>  /app/base/lib/db/connections.php:176
#0trigger_error(...string(40) "无法连接数据库:Connection refused" ,'256')connections.php:176
#1base_db_connections->_connect('127.0.0.1','root','Zxcv.690929','fanyi')connections.php:165
#2base_db_connections->_rw_conn()connections.php:150
#3base_db_connections->_ro_conn()connections.php:90
#4base_db_connections->select(...string(56) "select * from sdb_b2c_brand as brand where brand_id = 54" )brand.php:62
#5b2c_ctl_site_brand->index('54')
#6call_user_func_array(...array(2) { [0]=> object(b2c_ctl_site_brand)#21 (30) { ["seoTag"]=> array(2) { [0]=> string(8) "shopname" [1]=> string(5) "brand" } ["M":protected]=> object(base_db_connections)#24 (5) { ["_rw_lnk":protected]=> NULL ["_ro_lnk":protected]=> NULL ["_use_transaction":protected]=> bool(false) ["_enable_innodb"]=> bool(false) ["prefix"]=> string(4) "sdb_" } ["member":protected]=> array(0) { } ["__theme":"site_controller":private]=> NULL ["__tmpl":"site_controller":private]=> string(9) "brandlist" ["__tmpl_file":"site_controller":private]=> NULL ["__tmpl_main_app_id":"site_controller":private]=> NULL ["__widgets_css":"site_controller":private]=> array(0) { } ["__finish_modifier":"site_controller":private]=> array(0) { } ["__cachecontrol":"site_controller":private]=> array(4) { ["access"]=> string(6) "public" ["no-cache"]=> string(0) "" ["no-store"]=> string(0) "" ["max-age"]=> string(9) "max-age=1" } ["transaction_start"]=> bool(false) ["contentType"]=> string(23) "text/html;charset=utf-8" ["enable_strip_whitespace"]=> bool(false) ["is_splash"]=> bool(false) ["pagedata"]=> &array(1) { ["title"]=> string(48) "凡一商城直线导轨等产品问答咨询库" } ["force_compile"]=> int(0) ["_tag_stack"]=> array(0) { } ["_end_message"]=> NULL ["_compiler":"base_render":private]=> NULL ["_files"]=> array(0) { } ["_tpl_key_prefix"]=> array(0) { } ["_ignore_pre_display"]=> bool(false) ["app"]=> object(app)#10 (22) { ["__render":"app":private]=> NULL ["__router":"app":private]=> NULL ["__define":"app":private]=> NULL ["__taskrunner":"app":private]=> NULL ["__checkVaryArr":"app":private]=> array(0) { } ["__langPack":"app":private]=> array(0) { } ["__installed":"app":private]=> NULL ["__actived":"app":private]=> NULL ["__setting":"app":private]=> NULL ["app_id"]=> string(3) "b2c" ["app_dir"]=> string(20) "/mnt/wwwroot/app/b2c" ["public_app_dir"]=> string(27) "/mnt/wwwroot/public/app/b2c" ["res_url"]=> string(43) "http://www.forrun.cn/public/app/b2c/statics" ["res_full_url"]=> string(43) "http://www.forrun.cn/public/app/b2c/statics" ["lang_url"]=> string(40) "http://www.forrun.cn/public/app/b2c/lang" ["lang_full_url"]=> string(40) "http://www.forrun.cn/public/app/b2c/lang" ["widgets_url"]=> string(43) "http://www.forrun.cn/public/app/b2c/widgets" ["widgets_full_url"]=> string(43) "http://www.forrun.cn/public/app/b2c/widgets" ["res_dir"]=> string(35) "/mnt/wwwroot/public/app/b2c/statics" ["widgets_dir"]=> string(35) "/mnt/wwwroot/public/app/b2c/widgets" ["lang_dir"]=> string(32) "/mnt/wwwroot/public/app/b2c/lang" ["_lang_resource"]=> NULL } ["params"]=> array(0) { } ["_request"]=> object(base_component_request)#12 (11) { ["_app":protected]=> string(3) "b2c" ["_app_key":protected]=> string(3) "app" ["_ctl":protected]=> string(10) "site_brand" ["_ctl_key":protected]=> string(3) "ctl" ["_act":protected]=> string(5) "index" ["_act_key":protected]=> string(3) "act" ["_params":protected]=> array(1) { [0]=> string(2) "54" } ["_ext_param_source":protected]=> array(2) { [0]=> string(3) "GET" [1]=> string(4) "POST" } ["_request_uri":protected]=> string(11) "/nachi.html" ["_core_url":protected]=> NULL ["_path_info":protected]=> NULL } ["_response"]=> object(base_component_response)#13 (5) { ["_headers":protected]=> array(0) { } ["_raw_headers":protected]=> array(0) { } ["_http_response_code":protected]=> int(200) ["_is_redirect":protected]=> bool(false) ["_bodys":protected]=> array(0) { } } ["shopname"]=> string(86) "直线导轨,滚珠丝杆,进口滑块,精密模组,轴承,联轴器尽在凡一商城" ["title"]=> string(96) "品牌页_直线导轨,滚珠丝杆,进口滑块,精密模组,轴承,联轴器尽在凡一商城" ["keywords"]=> string(96) "品牌页_直线导轨,滚珠丝杆,进口滑块,精密模组,轴承,联轴器尽在凡一商城" ["description"]=> string(96) "品牌页_直线导轨,滚珠丝杆,进口滑块,精密模组,轴承,联轴器尽在凡一商城" } [1]=> string(5) "index" } ,...array(1) { [0]=> string(2) "54" } )router.php:606
#7site_router->default_dispatch()router.php:490
#8site_router->dispatch('nachi.html')kernel.php:165
#9kernel::boot()index.php:5