Question

我有一个工作烧瓶应用程序，我最近已进入测试环境。测试环境旨在通过WAMP服务器进行部署。

然而，在配置WAMP之后，页面在初始加载时运行正常，但是在刷新1次时，我遇到了内部服务器错误。使用flask或tornado 运行时，不会出现此内部服务器错误，并且apache_error.log和access.log显示没有错误。

我认为我缺少某种配置或缓存控制（如果我在出现内部服务器错误之前让它们离开，GET请求也无法正常工作，只有重新启动服务器才能获得新值。）

任何建议都会有所帮助。同样，这些问题仅在WAMP中部署时存在，而不是Flask内置或Tornado。

HTTP标头（Base.HTML，所有模板继承Base）

<meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta http-equiv="Pragma" CONTENT="no-cache"> <meta http-equiv="Expires" CONTENT="-1">

获得响应（在计时器上调用）

@app.route('/get_all_data2', methods=['GET']) def get_all_data2(): # .. Do stuff return json.dumps({"counts": workgroupDict, "computers": row_values}), 200, {'Content-Type': 'application/json'}

请求

function get_all_data(){ $.get('get_all_data2?'+ (new Date()).getTime(), function(returnedData){ # Updating data on the page. Writing Values } } ); }

左侧的值来自于烧瓶服务器...右侧的值来自WAMP服务器。两者都运行相同的代码库。

如果需要进一步的信息，请告诉我，我会提供。我之前从未将生产过的Flask应用程序部署到生产环境中。谢谢你的阅读。

8081是WAMP，8080是FLASK。您可以看到在8080上呈现的颜色，但是8081被赋予了内部错误（刷新后，在GET请求无法获得正确的值之后）
编辑：我真的只需要支持IE 11

HTTPD.CONF

# # This is the main Apache HTTP server configuration file. It contains the # configuration directives that give the server its instructions. # See <URL:http://httpd.apache.org/docs/2.4/> for detailed information. # In particular, see # <URL:http://httpd.apache.org/docs/2.4/mod/directives.html> # for a discussion of each configuration directive. # # Do NOT simply read the instructions in here without understanding # what they do. They're here only as hints or reminders. If you are unsure # consult the online docs. You have been warned. # # Configuration and logfile names: If the filenames you specify for many # of the server's control files begin with "/" (or "drive:/" for Win32), the # server will use that explicit path. If the filenames do *not* begin # with "/", the value of ServerRoot is prepended -- so "logs/access_log" # with ServerRoot set to "/usr/local/apache2" will be interpreted by the # server as "/usr/local/apache2/logs/access_log", whereas "/logs/access_log" # will be interpreted as '/logs/access_log'. # # NOTE: Where filenames are specified, you must use forward slashes # instead of backslashes (e.g., "c:/apache" instead of "c:\apache"). # If a drive letter is omitted, the drive on which httpd.exe is located # will be used by default. It is recommended that you always supply # an explicit drive letter in absolute paths to avoid confusion. ServerSignature On ServerTokens Full # # ServerRoot: The top of the directory tree under which the server's # configuration, error, and log files are kept. # # Do not add a slash at the end of the directory path. If you point # ServerRoot at a non-local disk, be sure to specify a local disk on the # Mutex directive, if file-based mutexes are used. If you wish to share the # same ServerRoot for multiple httpd daemons, you will need to change at # least PidFile. # ServerRoot "c:/wamp/bin/apache/apache2.4.9" Define APACHE24 Apache2.4 # # Mutex: Allows you to set the mutex mechanism and mutex file directory # for individual mutexes, or change the global defaults # # Uncomment and change the directory if mutexes are file-based and the default # mutex file directory is not on a local disk or is not appropriate for some # other reason. # # Mutex default:logs # # Listen: Allows you to bind Apache to specific IP addresses and/or # ports, instead of the default. See also the <VirtualHost> # directive. # # Change this to Listen on specific IP addresses as shown below to # prevent Apache from glomming onto all bound IP addresses. # #Listen 12.34.56.78:80 Listen 0.0.0.0:8081 Listen [::0]:8081 # # Dynamic Shared Object (DSO) Support # # To be able to use the functionality of a module which was built as a DSO you # have to place corresponding `LoadModule' lines at this location so the # directives contained in it are actually available _before_ they are used. # Statically compiled modules (those listed by `httpd -l') do not need # to be loaded here. # # Example: # LoadModule foo_module modules/mod_foo.so # Mod_Wsgi for Flask integration LoadModule wsgi_module modules/mod_wsgi.so # LoadModule access_compat_module modules/mod_access_compat.so LoadModule actions_module modules/mod_actions.so LoadModule alias_module modules/mod_alias.so LoadModule allowmethods_module modules/mod_allowmethods.so LoadModule asis_module modules/mod_asis.so LoadModule auth_basic_module modules/mod_auth_basic.so #LoadModule auth_digest_module modules/mod_auth_digest.so #LoadModule authn_anon_module modules/mod_authn_anon.so LoadModule authn_core_module modules/mod_authn_core.so #LoadModule authn_dbd_module modules/mod_authn_dbd.so #LoadModule authn_dbm_module modules/mod_authn_dbm.so LoadModule authn_file_module modules/mod_authn_file.so #LoadModule authn_socache_module modules/mod_authn_socache.so #LoadModule authnz_ldap_module modules/mod_authnz_ldap.so LoadModule authz_core_module modules/mod_authz_core.so #LoadModule authz_dbd_module modules/mod_authz_dbd.so #LoadModule authz_dbm_module modules/mod_authz_dbm.so LoadModule authz_groupfile_module modules/mod_authz_groupfile.so LoadModule authz_host_module modules/mod_authz_host.so #LoadModule authz_owner_module modules/mod_authz_owner.so LoadModule authz_user_module modules/mod_authz_user.so LoadModule autoindex_module modules/mod_autoindex.so #LoadModule buffer_module modules/mod_buffer.so LoadModule cache_module modules/mod_cache.so LoadModule cache_disk_module modules/mod_cache_disk.so #LoadModule cern_meta_module modules/mod_cern_meta.so LoadModule cgi_module modules/mod_cgi.so #LoadModule charset_lite_module modules/mod_charset_lite.so #LoadModule data_module modules/mod_data.so #LoadModule dav_module modules/mod_dav.so #LoadModule dav_fs_module modules/mod_dav_fs.so #LoadModule dav_lock_module modules/mod_dav_lock.so #LoadModule dbd_module modules/mod_dbd.so LoadModule deflate_module modules/mod_deflate.so LoadModule dir_module modules/mod_dir.so #LoadModule dumpio_module modules/mod_dumpio.so LoadModule env_module modules/mod_env.so #LoadModule expires_module modules/mod_expires.so #LoadModule ext_filter_module modules/mod_ext_filter.so LoadModule file_cache_module modules/mod_file_cache.so #LoadModule filter_module modules/mod_filter.so #LoadModule headers_module modules/mod_headers.so #LoadModule heartbeat_module modules/mod_heartbeat.so #LoadModule heartmonitor_module modules/mod_heartmonitor.so #LoadModule ident_module modules/mod_ident.so #LoadModule imagemap_module modules/mod_imagemap.so LoadModule include_module modules/mod_include.so #LoadModule info_module modules/mod_info.so LoadModule isapi_module modules/mod_isapi.so #LoadModule lbmethod_bybusyness_module modules/mod_lbmethod_bybusyness.so #LoadModule lbmethod_byrequests_module modules/mod_lbmethod_byrequests.so #LoadModule lbmethod_bytraffic_module modules/mod_lbmethod_bytraffic.so #LoadModule lbmethod_heartbeat_module modules/mod_lbmethod_heartbeat.so #LoadModule ldap_module modules/mod_ldap.so #LoadModule logio_module modules/mod_logio.so LoadModule log_config_module modules/mod_log_config.so #LoadModule log_debug_module modules/mod_log_debug.so #LoadModule log_forensic_module modules/mod_log_forensic.so #LoadModule lua_module modules/mod_lua.so LoadModule mime_module modules/mod_mime.so #LoadModule mime_magic_module modules/mod_mime_magic.so LoadModule negotiation_module modules/mod_negotiation.so #LoadModule proxy_module modules/mod_proxy.so #LoadModule proxy_ajp_module modules/mod_proxy_ajp.so #LoadModule proxy_balancer_module modules/mod_proxy_balancer.so #LoadModule proxy_connect_module modules/mod_proxy_connect.so #LoadModule proxy_express_module modules/mod_proxy_express.so #LoadModule proxy_fcgi_module modules/mod_proxy_fcgi.so #LoadModule proxy_ftp_module modules/mod_proxy_ftp.so #LoadModule proxy_html_module modules/mod_proxy_html.so #LoadModule proxy_http_module modules/mod_proxy_http.so #LoadModule proxy_scgi_module modules/mod_proxy_scgi.so #LoadModule ratelimit_module modules/mod_ratelimit.so #LoadModule reflector_module modules/mod_reflector.so #LoadModule remoteip_module modules/mod_remoteip.so #LoadModule request_module modules/mod_request.so #LoadModule reqtimeout_module modules/mod_reqtimeout.so #LoadModule rewrite_module modules/mod_rewrite.so #LoadModule sed_module modules/mod_sed.so #LoadModule session_module modules/mod_session.so #LoadModule session_cookie_module modules/mod_session_cookie.so #LoadModule session_crypto_module modules/mod_session_crypto.so #LoadModule session_dbd_module modules/mod_session_dbd.so LoadModule setenvif_module modules/mod_setenvif.so #LoadModule slotmem_plain_module modules/mod_slotmem_plain.so #LoadModule slotmem_shm_module modules/mod_slotmem_shm.so #LoadModule socache_dbm_module modules/mod_socache_dbm.so #LoadModule socache_memcache_module modules/mod_socache_memcache.so #LoadModule socache_shmcb_module modules/mod_socache_shmcb.so #LoadModule speling_module modules/mod_speling.so #LoadModule ssl_module modules/mod_ssl.so #LoadModule status_module modules/mod_status.so #LoadModule substitute_module modules/mod_substitute.so #LoadModule unique_id_module modules/mod_unique_id.so #LoadModule userdir_module modules/mod_userdir.so #LoadModule usertrack_module modules/mod_usertrack.so #LoadModule version_module modules/mod_version.so LoadModule vhost_alias_module modules/mod_vhost_alias.so #LoadModule watchdog_module modules/mod_watchdog.so #LoadModule xml2enc_module modules/mod_xml2enc.so LoadModule php5_module "c:/wamp/bin/php/php5.5.12/php5apache2_4.dll" #PHPIniDir c:/wamp/bin/php/php5.5.12 <IfModule unixd_module> # # If you wish httpd to run as a different user or group, you must run # httpd as root initially and it will switch. # # User/Group: The name (or #number) of the user/group to run httpd as. # It is usually good practice to create a dedicated user and group for # running httpd, as with most system services. # User daemon Group daemon </IfModule> # 'Main' server configuration # # The directives in this section set up the values used by the 'main' # server, which responds to any requests that aren't handled by a # <VirtualHost> definition. These values also provide defaults for # any <VirtualHost> containers you may define later in the file. # # All of these directives may appear inside <VirtualHost> containers, # in which case these default settings will be overridden for the # virtual host being defined. # # # ServerAdmin: Your address, where problems with the server should be # e-mailed. This address appears on some server-generated pages, such # as error documents. e.g. admin@your-domain.com # ServerAdmin admin@example.com # # ServerName gives the name and port that the server uses to identify itself. # This can often be determined automatically, but we recommend you specify # it explicitly to prevent problems during startup. # # If your host doesn't have a registered DNS name, enter its IP address here. # ServerName localhost:80 HostnameLookups Off # # DocumentRoot: The directory out of which you will serve your # documents. By default, all requests are taken from this directory, but # symbolic links and aliases may be used to point to other locations. # DocumentRoot "c:/wamp/www/" # # Each directory to which Apache has access can be configured with respect # to which services and features are allowed and/or disabled in that # directory (and its subdirectories). # # First, we configure the "default" to be a very restrictive set of # features. # <Directory /> AllowOverride none Require all denied </Directory> # # Note that from this point forward you must specifically allow # particular features to be enabled - so if something's not working as # you might expect, make sure that you have specifically enabled it # below. # <Directory "c:/wamp/www/"> # # Possible values for the Options directive are "None", "All", # or any combination of: # Indexes Includes FollowSymLinks SymLinksifOwnerMatch ExecCGI MultiViews # # Note that "MultiViews" must be named *explicitly* --- "Options All" # doesn't give it to you. # # The Options directive is both complicated and important. Please see # http://httpd.apache.org/docs/2.4/mod/core.html#options # for more information. # Options Indexes FollowSymLinks # # AllowOverride controls what directives may be placed in .htaccess files. # It can be "All", "None", or any combination of the keywords: # AllowOverride FileInfo AuthConfig Limit # AllowOverride all # # Controls who can get stuff from this server. # # onlineoffline tag - don't remove Require all granted </Directory> # # DirectoryIndex: sets the file that Apache will serve if a directory # is requested. # <IfModule dir_module> DirectoryIndex index.php index.php3 index.html index.htm </IfModule> # # The following lines prevent .htaccess and .htpasswd files from being # viewed by Web clients. # <Files ".ht*"> Require all denied </Files> # # ErrorLog: The location of the error log file. # If you do not specify an ErrorLog directive within a <VirtualHost> # container, error messages relating to that virtual host will be # logged here. If you *do* define an error logfile for a <VirtualHost> # container, that host's errors will be logged there and not here. # #ErrorLog "logs/error.log" ErrorLog "c:/wamp/logs/apache_error.log" # # LogLevel: Control the number of messages logged to the error_log. # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. # LogLevel warn <IfModule log_config_module> # # The following directives define some format nicknames for use with # a CustomLog directive (see below). # LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined LogFormat "%h %l %u %t \"%r\" %>s %b" common <IfModule logio_module> # You need to enable mod_logio.c to use %I and %O LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\" %I %O" combinedio </IfModule> # # The location and format of the access logfile (Common Logfile Format). # If you do not define any access logfiles within a <VirtualHost> # container, they will be logged here. Contrariwise, if you *do* # define per-<VirtualHost> access logfiles, transactions will be # logged therein and *not* in this file. # CustomLog "c:/wamp/logs/access.log" common # # If you prefer a logfile with access, agent, and referer information # (Combined Logfile Format) you can use the following directive. # #CustomLog "logs/access.log" combined </IfModule> <IfModule alias_module> # # Redirect: Allows you to tell clients about documents that used to # exist in your server's namespace, but do not anymore. The client # will make a new request for the document at its new location. # Example: # Redirect permanent /foo http://www.example.com/bar # # Alias: Maps web paths into filesystem paths and is used to # access content that does not live under the DocumentRoot. # Example: # Alias /webpath /full/filesystem/path # # If you include a trailing / on /webpath then the server will # require it to be present in the URL. You will also likely # need to provide a <Directory> section to allow access to # the filesystem path. # # ScriptAlias: This controls which directories contain server scripts. # ScriptAliases are essentially the same as Aliases, except that # documents in the target directory are treated as applications and # run by the server when requested rather than as documents sent to the # client. The same rules about trailing "/" apply to ScriptAlias # directives as to Alias. # ScriptAlias /cgi-bin/ "c:/wamp/bin/apache/apache2.4.9/cgi-bin/" </IfModule> <IfModule cgid_module> # # ScriptSock: On threaded servers, designate the path to the UNIX # socket used to communicate with the CGI daemon of mod_cgid. # #Scriptsock cgisock </IfModule> # # "c:/wamp/bin/apache/apache2.4.9/cgi-bin" should be changed to whatever your ScriptAliased # CGI directory exists, if you have that configured. # <Directory "c:/wamp/bin/apache/apache2.4.9/cgi-bin"> AllowOverride None Options None Require all granted </Directory> <IfModule mime_module> # # TypesConfig points to the file containing the list of mappings from # filename extension to MIME-type. # TypesConfig conf/mime.types # # AddType allows you to add to or override the MIME configuration # file specified in TypesConfig for specific file types. # #AddType application/x-gzip .tgz # # AddEncoding allows you to have certain browsers uncompress # information on the fly. Note: Not all browsers support this. # AddEncoding x-compress .Z AddEncoding x-gzip .gz .tgz # # If the AddEncoding directives above are commented-out, then you # probably should define those extensions to indicate media types: # AddType application/x-compress .Z AddType application/x-gzip .gz .tgz AddType application/x-httpd-php .php AddType application/x-httpd-php .php3 # # AddHandler allows you to map certain file extensions to "handlers": # actions unrelated to filetype. These can be either built into the server # or added with the Action directive (see below) # # To use CGI scripts outside of ScriptAliased directories: # (You will also need to add "ExecCGI" to the "Options" directive.) # #AddHandler cgi-script .cgi # For type maps (negotiated resources): #AddHandler type-map var # # Filters allow you to process content before it is sent to the client. # # To parse .shtml files for server-side includes (SSI): # (You will also need to add "Includes" to the "Options" directive.) # #AddType text/html .shtml #AddOutputFilter INCLUDES .shtml </IfModule> # # The mod_mime_magic module allows the server to use various hints from the # contents of the file itself to determine its type. The MIMEMagicFile # directive tells the module where the hint definitions are located. # #MIMEMagicFile conf/magic # # Customizable error responses come in three flavors: # 1) plain text 2) local redirects 3) external redirects # # Some examples: #ErrorDocument 500 "The server made a boo boo." #ErrorDocument 404 /missing.html #ErrorDocument 404 "/cgi-bin/missing_handler.pl" #ErrorDocument 402 http://www.example.com/subscription_info.html # # # MaxRanges: Maximum number of Ranges in a request before # returning the entire resource, or one of the special # values 'default', 'none' or 'unlimited'. # Default setting is to accept 200 Ranges. #MaxRanges unlimited # # EnableMMAP and EnableSendfile: On systems that support it, # memory-mapping or the sendfile syscall may be used to deliver # files. This usually improves server performance, but must # be turned off when serving from networked-mounted # filesystems or if support for these functions is otherwise # broken on your system. # Defaults: EnableMMAP On, EnableSendfile Off # #EnableMMAP off EnableSendfile off # AcceptFilter: On Windows, none uses accept() rather than AcceptEx() and # will not recycle sockets between connections. This is useful for network # adapters with broken driver support, as well as some virtual network # providers such as vpn drivers, or spam, virus or spyware filters. AcceptFilter http none AcceptFilter https none # Supplemental configuration # # The configuration files in the conf/extra/ directory can be # included to add extra features or to modify the default configuration of # the server, or you may simply copy their contents here and change as # necessary. # Server-pool management (MPM specific) #Include conf/extra/httpd-mpm.conf # Multi-language error messages #Include conf/extra/httpd-multilang-errordoc.conf # Fancy directory listings Include conf/extra/httpd-autoindex.conf # Language settings #Include conf/extra/httpd-languages.conf # User home directories #Include conf/extra/httpd-userdir.conf # Real-time info on requests and configuration #Include conf/extra/httpd-info.conf # Virtual hosts #Include conf/extra/httpd-vhosts.conf # Local access to the Apache HTTP Server Manual #Include conf/extra/httpd-manual.conf # Distributed authoring and versioning (WebDAV) #Include conf/extra/httpd-dav.conf # Various default settings #Include conf/extra/httpd-default.conf # Configure mod_proxy_html to understand HTML4/XHTML1 <IfModule proxy_html_module> Include conf/extra/proxy-html.conf </IfModule> # Secure (SSL/TLS) connections #Include conf/extra/httpd-ssl.conf # # Note: The following must must be present to support # starting without SSL on platforms with no /dev/random equivalent # but a statically compiled-in mod_ssl. # <IfModule ssl_module> SSLRandomSeed startup builtin SSLRandomSeed connect builtin </IfModule> # # uncomment out the below to deal with user agents that deliberately # violate open standards by misusing DNT (DNT *must* be a specific # end-user choice) # #<IfModule setenvif_module> #BrowserMatch "MSIE 10.0;" bad_DNT #</IfModule> #<IfModule headers_module> #RequestHeader unset DNT env=bad_DNT #</IfModule> #IncludeOptional "c:/wamp/vhosts/*" Include "c:/wamp/alias/*"

MMServer.conf

<VirtualHost *> ServerName localhost WSGIScriptAlias / C:\wamp\www\mmserver\mmserver.wsgi <Directory C:\wamp\www\mmserver> Order deny,allow AllowOverride all Require all granted </Directory> </VirtualHost>

Answer 1

SQLAlchemy会话不是线程安全的，您需要为程序运行的每个线程创建一个。您在Tornado上没有遇到问题，因为它是单线程的。管理此问题的一种方法是使用scoped_session。

engine = create_engine('postgresql://user:pass@host:port/myapp')
session = scoped_session(sessionmaker(bind=engine))

Flask-SQLAlchemy扩展在将SQLAlchemy与Flask一起使用时为您管理此内容和其他内容。您可以通过继承和覆盖Model来使用自己的make_declarative_base类。

from flask_sqlalchemy import SQLAlchemy, _QueryProperty, _BoundDeclarativeMeta
from sqlalchemy.ext.declarative import declarative_base
from mymodule.session import Base

class MySQLAlchemy(SQLAlchemy):
    def make_declarative_base(self, metadata=None):
        base = declarative_base(
            cls=Base, name='Model',
            metadata=Base.metadata,
            metaclass=_BoundDeclarativeMeta
        )
        base.query = _QueryProperty(self)
        return base

        # if the above doesn't work, go simpler and just
        # use your existing declarative base
        model = Base
        model.query = _QueryProperty(self)
        return model

Answer 2

因此，经过大约8个小时的调试，我发现SQLAlchemy会话被视为处于跨国状态，即使我没有向数据库写任何值。我只是在查询。

但是，在每个session.commit()函数的末尾添加GET似乎已修复此问题。无论是否写入，数据现在都会在查询结束时刷新。

我不知道为什么会话在tornado vs apache中被区别对待，但对于所有未来的读者，请检查你的会话

Answer 3

您需要添加LoadModule cgi_module modules / mod_cgi.so 到配置文件中的模型

Flask部署 - WAMP中的内部服务器错误，但不是Flask

3 个答案: