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主要内容：Java项目、毕业设计、简历模板、学习资料、面试题库、技术互助

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文末获取源码

项目编号：BS-Python-007

一，环境介绍

语言环境：Python3.8  Django4.2.1

数据库：Mysql: mysql5.7

开发工具：IDEA

前端技术：HTML+CSS+JS

二，项目简介

主要功能：

- 文章，页面，分类目录，标签的添加，删除，编辑等。文章、评论及页面支持`Markdown`，支持代码高亮。

- 支持文章全文搜索。

- 完整的评论功能，包括发表回复评论，以及评论的邮件提醒，支持`Markdown`。

- 侧边栏功能，最新文章，最多阅读，标签云等。

- 支持Oauth登陆，现已有Google,GitHub,facebook,微博,QQ登录。

- 支持`Redis`缓存，支持缓存自动刷新。

- 简单的SEO功能，新建文章等会自动通知Google和百度。

- 集成了简单的图床功能。

- 集成`django-compressor`，自动压缩`css`，`js`。

- 网站异常邮件提醒，若有未捕捉到的异常会自动发送提醒邮件。

- 集成了微信公众号功能，现在可以使用微信公众号来管理你的vps了。

系统的用户可以分为两类，前端用户和后台管理用户，用户的权限可以在后台由管理员进行管理设定。系统功能相对比较完整，包含了用户管理、博文分类管理、博文管理、标签管理、评论管理、友情连接管理、侧边栏管理、第三方授权登录管理等等

三，系统展示

系统首页

前端用户登录

博客详情

编辑

文档归类

编辑

后台管理

编辑

用户管理

编辑

分类管理

编辑

文章管理

编辑

标签管理

编辑

网站配置

编辑

评论管理

编辑

四，核心代码展示

from django.contrib.admin import AdminSitefrom django.contrib.admin.models import LogEntryfrom django.contrib.sites.admin import SiteAdminfrom django.contrib.sites.models import Sitefrom accounts.admin import *from blog.admin import *from blog.models import *from comments.admin import *from comments.models import *from djangoblog.logentryadmin import LogEntryAdminfrom oauth.admin import *from oauth.models import *from owntracks.admin import *from owntracks.models import *from servermanager.admin import *from servermanager.models import *class DjangoBlogAdminSite(AdminSite):    site_header = 'Python博客后台管理'    site_title = '后台管理'    def __init__(self, name='admin'):        super().__init__(name)    def has_permission(self, request):        return request.user.is_superuser    # def get_urls(self):    #     urls = super().get_urls()    #     from django.urls import path    #     from blog.views import refresh_memcache    #    #     my_urls = [    #         path('refresh/', self.admin_view(refresh_memcache), name="refresh"),    #     ]    #     return urls + my_urlsadmin_site = DjangoBlogAdminSite(name='admin')admin_site.register(Article, ArticlelAdmin)admin_site.register(Category, CategoryAdmin)admin_site.register(Tag, TagAdmin)admin_site.register(Links, LinksAdmin)admin_site.register(SideBar, SideBarAdmin)admin_site.register(BlogSettings, BlogSettingsAdmin)admin_site.register(commands, CommandsAdmin)admin_site.register(EmailSendLog, EmailSendLogAdmin)admin_site.register(BlogUser, BlogUserAdmin)admin_site.register(Comment, CommentAdmin)admin_site.register(OAuthUser, OAuthUserAdmin)admin_site.register(OAuthConfig, OAuthConfigAdmin)admin_site.register(OwnTrackLog, OwnTrackLogsAdmin)admin_site.register(Site, SiteAdmin)admin_site.register(LogEntry, LogEntryAdmin)

from django.contrib import adminfrom django.contrib.admin.models import LogEntry, ADDITION, CHANGE, DELETIONfrom django.contrib.contenttypes.models import ContentTypefrom django.urls import reverse, NoReverseMatchfrom django.utils.encoding import force_strfrom django.utils.html import escapefrom django.utils.safestring import mark_safefrom django.utils.translation import pgettext_lazy, gettext_lazy  as _action_names = {    ADDITION: pgettext_lazy('logentry_admin:action_type', 'Addition'),    DELETION: pgettext_lazy('logentry_admin:action_type', 'Deletion'),    CHANGE: pgettext_lazy('logentry_admin:action_type', 'Change'),}class LogEntryAdmin(admin.ModelAdmin):    date_hierarchy = 'action_time'    readonly_fields = ([f.name for f in LogEntry._meta.fields] +                       ['object_link', 'action_description', 'user_link',                        'get_change_message'])    fieldsets = (        (_('Metadata'), {            'fields': (                'action_time',                'user_link',                'action_description',                'object_link',            )        }),        (_('Details'), {            'fields': (                'get_change_message',                'content_type',                'object_id',                'object_repr',            )        }),    )    list_filter = [        'content_type'    ]    search_fields = [        'object_repr',        'change_message'    ]    list_display_links = [        'action_time',        'get_change_message',    ]    list_display = [        'action_time',        'user_link',        'content_type',        'object_link',        'action_description',        'get_change_message',    ]    def has_add_permission(self, request):        return False    def has_change_permission(self, request, obj=None):        return (                       request.user.is_superuser or                       request.user.has_perm('admin.change_logentry')               ) and request.method != 'POST'    def has_delete_permission(self, request, obj=None):        return False    def object_link(self, obj):        object_link = escape(obj.object_repr)        content_type = obj.content_type        if obj.action_flag != DELETION and content_type is not None:            # try returning an actual link instead of object repr string            try:                url = reverse(                    'admin:{}_{}_change'.format(content_type.app_label,                                                content_type.model),                    args=[obj.object_id]                )                object_link = '<a href="{}">{}</a>'.format(url, object_link)            except NoReverseMatch:                pass        return mark_safe(object_link)    object_link.admin_order_field = 'object_repr'    object_link.short_description = _('object')    def user_link(self, obj):        content_type = ContentType.objects.get_for_model(type(obj.user))        user_link = escape(force_str(obj.user))        try:            # try returning an actual link instead of object repr string            url = reverse(                'admin:{}_{}_change'.format(content_type.app_label,                                            content_type.model),                args=[obj.user.pk]            )            user_link = '<a href="{}">{}</a>'.format(url, user_link)        except NoReverseMatch:            pass        return mark_safe(user_link)    user_link.admin_order_field = 'user'    user_link.short_description = _('user')    def get_queryset(self, request):        queryset = super(LogEntryAdmin, self).get_queryset(request)        return queryset.prefetch_related('content_type')    def get_actions(self, request):        actions = super(LogEntryAdmin, self).get_actions(request)        if 'delete_selected' in actions:            del actions['delete_selected']        return actions    def action_description(self, obj):        return action_names[obj.action_flag]    action_description.short_description = _('action')    def get_change_message(self, obj):        return obj.get_change_message()    get_change_message.short_description = _('change message')

# encoding: utf-8from __future__ import absolute_import, division, print_function, unicode_literalsimport jsonimport osimport reimport shutilimport threadingimport warningsimport sixfrom django.conf import settingsfrom django.core.exceptions import ImproperlyConfiguredfrom django.utils.datetime_safe import datetimefrom django.utils.encoding import force_strfrom haystack.backends import BaseEngine, BaseSearchBackend, BaseSearchQuery, EmptyResults, log_queryfrom haystack.constants import DJANGO_CT, DJANGO_ID, IDfrom haystack.exceptions import MissingDependency, SearchBackendError, SkipDocumentfrom haystack.inputs import Clean, Exact, PythonData, Rawfrom haystack.models import SearchResultfrom haystack.utils import get_identifier, get_model_ctfrom haystack.utils import log as loggingfrom haystack.utils.app_loading import haystack_get_modelfrom jieba.analyse import ChineseAnalyzerfrom whoosh import indexfrom whoosh.analysis import StemmingAnalyzerfrom whoosh.fields import BOOLEAN, DATETIME, IDLIST, KEYWORD, NGRAM, NGRAMWORDS, NUMERIC, Schema, TEXTfrom whoosh.fields import ID as WHOOSH_IDfrom whoosh.filedb.filestore import FileStorage, RamStoragefrom whoosh.highlight import ContextFragmenter, HtmlFormatterfrom whoosh.highlight import highlight as whoosh_highlightfrom whoosh.qparser import QueryParserfrom whoosh.searching import ResultsPagefrom whoosh.writing import AsyncWritertry:    import whooshexcept ImportError:    raise MissingDependency(        "The 'whoosh' backend requires the installation of 'Whoosh'. Please refer to the documentation.")# Handle minimum requirement.if not hasattr(whoosh, '__version__') or whoosh.__version__ < (2, 5, 0):    raise MissingDependency(        "The 'whoosh' backend requires version 2.5.0 or greater.")# Bubble up the correct error.DATETIME_REGEX = re.compile(    '^(?P<year>\d{4})-(?P<month>\d{2})-(?P<day>\d{2})T(?P<hour>\d{2}):(?P<minute>\d{2}):(?P<second>\d{2})(\.\d{3,6}Z?)?$')LOCALS = threading.local()LOCALS.RAM_STORE = Noneclass WhooshHtmlFormatter(HtmlFormatter):    """    This is a HtmlFormatter simpler than the whoosh.HtmlFormatter.    We use it to have consistent results across backends. Specifically,    Solr, Xapian and Elasticsearch are using this formatting.    """    template = '<%(tag)s>%(t)s</%(tag)s>'class WhooshSearchBackend(BaseSearchBackend):    # Word reserved by Whoosh for special use.    RESERVED_WORDS = (        'AND',        'NOT',        'OR',        'TO',    )    # Characters reserved by Whoosh for special use.    # The '\\' must come first, so as not to overwrite the other slash    # replacements.    RESERVED_CHARACTERS = (        '\\', '+', '-', '&&', '||', '!', '(', ')', '{', '}',        '[', ']', '^', '"', '~', '*', '?', ':', '.',    )    def __init__(self, connection_alias, **connection_options):        super(            WhooshSearchBackend,            self).__init__(            connection_alias,            **connection_options)        self.setup_complete = False        self.use_file_storage = True        self.post_limit = getattr(            connection_options,            'POST_LIMIT',            128 * 1024 * 1024)        self.path = connection_options.get('PATH')        if connection_options.get('STORAGE', 'file') != 'file':            self.use_file_storage = False        if self.use_file_storage and not self.path:            raise ImproperlyConfigured(                "You must specify a 'PATH' in your settings for connection '%s'." %                connection_alias)        self.log = logging.getLogger('haystack')    def setup(self):        """        Defers loading until needed.        """        from haystack import connections        new_index = False        # Make sure the index is there.        if self.use_file_storage and not os.path.exists(self.path):            os.makedirs(self.path)            new_index = True        if self.use_file_storage and not os.access(self.path, os.W_OK):            raise IOError(                "The path to your Whoosh index '%s' is not writable for the current user/group." %                self.path)        if self.use_file_storage:            self.storage = FileStorage(self.path)        else:            global LOCALS            if getattr(LOCALS, 'RAM_STORE', None) is None:                LOCALS.RAM_STORE = RamStorage()            self.storage = LOCALS.RAM_STORE        self.content_field_name, self.schema = self.build_schema(            connections[self.connection_alias].get_unified_index().all_searchfields())        self.parser = QueryParser(self.content_field_name, schema=self.schema)        if new_index is True:            self.index = self.storage.create_index(self.schema)        else:            try:                self.index = self.storage.open_index(schema=self.schema)            except index.EmptyIndexError:                self.index = self.storage.create_index(self.schema)        self.setup_complete = True    def build_schema(self, fields):        schema_fields = {            ID: WHOOSH_ID(stored=True, unique=True),            DJANGO_CT: WHOOSH_ID(stored=True),            DJANGO_ID: WHOOSH_ID(stored=True),        }        # Grab the number of keys that are hard-coded into Haystack.        # We'll use this to (possibly) fail slightly more gracefully later.        initial_key_count = len(schema_fields)        content_field_name = ''        for field_name, field_class in fields.items():            if field_class.is_multivalued:                if field_class.indexed is False:                    schema_fields[field_class.index_fieldname] = IDLIST(                        stored=True, field_boost=field_class.boost)                else:                    schema_fields[field_class.index_fieldname] = KEYWORD(                        stored=True, commas=True, scorable=True, field_boost=field_class.boost)            elif field_class.field_type in ['date', 'datetime']:                schema_fields[field_class.index_fieldname] = DATETIME(                    stored=field_class.stored, sortable=True)            elif field_class.field_type == 'integer':                schema_fields[field_class.index_fieldname] = NUMERIC(                    stored=field_class.stored, numtype=int, field_boost=field_class.boost)            elif field_class.field_type == 'float':                schema_fields[field_class.index_fieldname] = NUMERIC(                    stored=field_class.stored, numtype=float, field_boost=field_class.boost)            elif field_class.field_type == 'boolean':                # Field boost isn't supported on BOOLEAN as of 1.8.2.                schema_fields[field_class.index_fieldname] = BOOLEAN(                    stored=field_class.stored)            elif field_class.field_type == 'ngram':                schema_fields[field_class.index_fieldname] = NGRAM(                    minsize=3, maxsize=15, stored=field_class.stored, field_boost=field_class.boost)            elif field_class.field_type == 'edge_ngram':                schema_fields[field_class.index_fieldname] = NGRAMWORDS(minsize=2, maxsize=15, at='start',                                                                        stored=field_class.stored,                                                                        field_boost=field_class.boost)            else:                # schema_fields[field_class.index_fieldname] = TEXT(stored=True, analyzer=StemmingAnalyzer(), field_boost=field_class.boost, sortable=True)                schema_fields[field_class.index_fieldname] = TEXT(                    stored=True, analyzer=ChineseAnalyzer(), field_boost=field_class.boost, sortable=True)            if field_class.document is True:                content_field_name = field_class.index_fieldname                schema_fields[field_class.index_fieldname].spelling = True        # Fail more gracefully than relying on the backend to die if no fields        # are found.        if len(schema_fields) <= initial_key_count:            raise SearchBackendError(                "No fields were found in any search_indexes. Please correct this before attempting to search.")        return (content_field_name, Schema(**schema_fields))    def update(self, index, iterable, commit=True):        if not self.setup_complete:            self.setup()        self.index = self.index.refresh()        writer = AsyncWriter(self.index)        for obj in iterable:            try:                doc = index.full_prepare(obj)            except SkipDocument:                self.log.debug(u"Indexing for object `%s` skipped", obj)            else:                # Really make sure it's unicode, because Whoosh won't have it any                # other way.                for key in doc:                    doc[key] = self._from_python(doc[key])                # Document boosts aren't supported in Whoosh 2.5.0+.                if 'boost' in doc:                    del doc['boost']                try:                    writer.update_document(**doc)                except Exception as e:                    if not self.silently_fail:                        raise                    # We'll log the object identifier but won't include the actual object                    # to avoid the possibility of that generating encoding errors while                    # processing the log message:                    self.log.error(                        u"%s while preparing object for update" %                        e.__class__.__name__,                        exc_info=True,                        extra={                            "data": {                                "index": index,                                "object": get_identifier(obj)}})        if len(iterable) > 0:            # For now, commit no matter what, as we run into locking issues            # otherwise.            writer.commit()    def remove(self, obj_or_string, commit=True):        if not self.setup_complete:            self.setup()        self.index = self.index.refresh()        whoosh_id = get_identifier(obj_or_string)        try:            self.index.delete_by_query(                q=self.parser.parse(                    u'%s:"%s"' %                    (ID, whoosh_id)))        except Exception as e:            if not self.silently_fail:                raise            self.log.error(                "Failed to remove document '%s' from Whoosh: %s",                whoosh_id,                e,                exc_info=True)    def clear(self, models=None, commit=True):        if not self.setup_complete:            self.setup()        self.index = self.index.refresh()        if models is not None:            assert isinstance(models, (list, tuple))        try:            if models is None:                self.delete_index()            else:                models_to_delete = []                for model in models:                    models_to_delete.append(                        u"%s:%s" %                        (DJANGO_CT, get_model_ct(model)))                self.index.delete_by_query(                    q=self.parser.parse(                        u" OR ".join(models_to_delete)))        except Exception as e:            if not self.silently_fail:                raise            if models is not None:                self.log.error(                    "Failed to clear Whoosh index of models '%s': %s",                    ','.join(models_to_delete),                    e,                    exc_info=True)            else:                self.log.error(                    "Failed to clear Whoosh index: %s", e, exc_info=True)    def delete_index(self):        # Per the Whoosh mailing list, if wiping out everything from the index,        # it's much more efficient to simply delete the index files.        if self.use_file_storage and os.path.exists(self.path):            shutil.rmtree(self.path)        elif not self.use_file_storage:            self.storage.clean()        # Recreate everything.        self.setup()    def optimize(self):        if not self.setup_complete:            self.setup()        self.index = self.index.refresh()        self.index.optimize()    def calculate_page(self, start_offset=0, end_offset=None):        # Prevent against Whoosh throwing an error. Requires an end_offset        # greater than 0.        if end_offset is not None and end_offset <= 0:            end_offset = 1        # Determine the page.        page_num = 0        if end_offset is None:            end_offset = 1000000        if start_offset is None:            start_offset = 0        page_length = end_offset - start_offset        if page_length and page_length > 0:            page_num = int(start_offset / page_length)        # Increment because Whoosh uses 1-based page numbers.        page_num += 1        return page_num, page_length    @log_query    def search(            self,            query_string,            sort_by=None,            start_offset=0,            end_offset=None,            fields='',            highlight=False,            facets=None,            date_facets=None,            query_facets=None,            narrow_queries=None,            spelling_query=None,            within=None,            dwithin=None,            distance_point=None,            models=None,            limit_to_registered_models=None,            result_class=None,            **kwargs):        if not self.setup_complete:            self.setup()        # A zero length query should return no results.        if len(query_string) == 0:            return {                'results': [],                'hits': 0,            }        query_string = force_str(query_string)        # A one-character query (non-wildcard) gets nabbed by a stopwords        # filter and should yield zero results.        if len(query_string) <= 1 and query_string != u'*':            return {                'results': [],                'hits': 0,            }        reverse = False        if sort_by is not None:            # Determine if we need to reverse the results and if Whoosh can            # handle what it's being asked to sort by. Reversing is an            # all-or-nothing action, unfortunately.            sort_by_list = []            reverse_counter = 0            for order_by in sort_by:                if order_by.startswith('-'):                    reverse_counter += 1            if reverse_counter and reverse_counter != len(sort_by):                raise SearchBackendError("Whoosh requires all order_by fields"                                         " to use the same sort direction")            for order_by in sort_by:                if order_by.startswith('-'):                    sort_by_list.append(order_by[1:])                    if len(sort_by_list) == 1:                        reverse = True                else:                    sort_by_list.append(order_by)                    if len(sort_by_list) == 1:                        reverse = False            sort_by = sort_by_list[0]        if facets is not None:            warnings.warn(                "Whoosh does not handle faceting.",                Warning,                stacklevel=2)        if date_facets is not None:            warnings.warn(                "Whoosh does not handle date faceting.",                Warning,                stacklevel=2)        if query_facets is not None:            warnings.warn(                "Whoosh does not handle query faceting.",                Warning,                stacklevel=2)        narrowed_results = None        self.index = self.index.refresh()        if limit_to_registered_models is None:            limit_to_registered_models = getattr(                settings, 'HAYSTACK_LIMIT_TO_REGISTERED_MODELS', True)        if models and len(models):            model_choices = sorted(get_model_ct(model) for model in models)        elif limit_to_registered_models:            # Using narrow queries, limit the results to only models handled            # with the current routers.            model_choices = self.build_models_list()        else:            model_choices = []        if len(model_choices) > 0:            if narrow_queries is None:                narrow_queries = set()            narrow_queries.add(' OR '.join(                ['%s:%s' % (DJANGO_CT, rm) for rm in model_choices]))        narrow_searcher = None        if narrow_queries is not None:            # Potentially expensive? I don't see another way to do it in            # Whoosh...            narrow_searcher = self.index.searcher()            for nq in narrow_queries:                recent_narrowed_results = narrow_searcher.search(                    self.parser.parse(force_str(nq)), limit=None)                if len(recent_narrowed_results) <= 0:                    return {                        'results': [],                        'hits': 0,                    }                if narrowed_results:                    narrowed_results.filter(recent_narrowed_results)                else:                    narrowed_results = recent_narrowed_results        self.index = self.index.refresh()        if self.index.doc_count():            searcher = self.index.searcher()            parsed_query = self.parser.parse(query_string)            # In the event of an invalid/stopworded query, recover gracefully.            if parsed_query is None:                return {                    'results': [],                    'hits': 0,                }            page_num, page_length = self.calculate_page(                start_offset, end_offset)            search_kwargs = {                'pagelen': page_length,                'sortedby': sort_by,                'reverse': reverse,            }            # Handle the case where the results have been narrowed.            if narrowed_results is not None:                search_kwargs['filter'] = narrowed_results            try:                raw_page = searcher.search_page(                    parsed_query,                    page_num,                    **search_kwargs                )            except ValueError:                if not self.silently_fail:                    raise                return {                    'results': [],                    'hits': 0,                    'spelling_suggestion': None,                }            # Because as of Whoosh 2.5.1, it will return the wrong page of            # results if you request something too high. :(            if raw_page.pagenum < page_num:                return {                    'results': [],                    'hits': 0,                    'spelling_suggestion': None,                }            results = self._process_results(                raw_page,                highlight=highlight,                query_string=query_string,                spelling_query=spelling_query,                result_class=result_class)            searcher.close()            if hasattr(narrow_searcher, 'close'):                narrow_searcher.close()            return results        else:            if self.include_spelling:                if spelling_query:                    spelling_suggestion = self.create_spelling_suggestion(                        spelling_query)                else:                    spelling_suggestion = self.create_spelling_suggestion(                        query_string)            else:                spelling_suggestion = None            return {                'results': [],                'hits': 0,                'spelling_suggestion': spelling_suggestion,            }    def more_like_this(            self,            model_instance,            additional_query_string=None,            start_offset=0,            end_offset=None,            models=None,            limit_to_registered_models=None,            result_class=None,            **kwargs):        if not self.setup_complete:            self.setup()        # Deferred models will have a different class ("RealClass_Deferred_fieldname")        # which won't be in our registry:        model_klass = model_instance._meta.concrete_model        field_name = self.content_field_name        narrow_queries = set()        narrowed_results = None        self.index = self.index.refresh()        if limit_to_registered_models is None:            limit_to_registered_models = getattr(                settings, 'HAYSTACK_LIMIT_TO_REGISTERED_MODELS', True)        if models and len(models):            model_choices = sorted(get_model_ct(model) for model in models)        elif limit_to_registered_models:            # Using narrow queries, limit the results to only models handled            # with the current routers.            model_choices = self.build_models_list()        else:            model_choices = []        if len(model_choices) > 0:            if narrow_queries is None:                narrow_queries = set()            narrow_queries.add(' OR '.join(                ['%s:%s' % (DJANGO_CT, rm) for rm in model_choices]))        if additional_query_string and additional_query_string != '*':            narrow_queries.add(additional_query_string)        narrow_searcher = None        if narrow_queries is not None:            # Potentially expensive? I don't see another way to do it in            # Whoosh...            narrow_searcher = self.index.searcher()            for nq in narrow_queries:                recent_narrowed_results = narrow_searcher.search(                    self.parser.parse(force_str(nq)), limit=None)                if len(recent_narrowed_results) <= 0:                    return {                        'results': [],                        'hits': 0,                    }                if narrowed_results:                    narrowed_results.filter(recent_narrowed_results)                else:                    narrowed_results = recent_narrowed_results        page_num, page_length = self.calculate_page(start_offset, end_offset)        self.index = self.index.refresh()        raw_results = EmptyResults()        if self.index.doc_count():            query = "%s:%s" % (ID, get_identifier(model_instance))            searcher = self.index.searcher()            parsed_query = self.parser.parse(query)            results = searcher.search(parsed_query)            if len(results):                raw_results = results[0].more_like_this(                    field_name, top=end_offset)            # Handle the case where the results have been narrowed.            if narrowed_results is not None and hasattr(raw_results, 'filter'):                raw_results.filter(narrowed_results)        try:            raw_page = ResultsPage(raw_results, page_num, page_length)        except ValueError:            if not self.silently_fail:                raise            return {                'results': [],                'hits': 0,                'spelling_suggestion': None,            }        # Because as of Whoosh 2.5.1, it will return the wrong page of        # results if you request something too high. :(        if raw_page.pagenum < page_num:            return {                'results': [],                'hits': 0,                'spelling_suggestion': None,            }        results = self._process_results(raw_page, result_class=result_class)        searcher.close()        if hasattr(narrow_searcher, 'close'):            narrow_searcher.close()        return results    def _process_results(            self,            raw_page,            highlight=False,            query_string='',            spelling_query=None,            result_class=None):        from haystack import connections        results = []        # It's important to grab the hits first before slicing. Otherwise, this        # can cause pagination failures.        hits = len(raw_page)        if result_class is None:            result_class = SearchResult        facets = {}        spelling_suggestion = None        unified_index = connections[self.connection_alias].get_unified_index()        indexed_models = unified_index.get_indexed_models()        for doc_offset, raw_result in enumerate(raw_page):            score = raw_page.score(doc_offset) or 0            app_label, model_name = raw_result[DJANGO_CT].split('.')            additional_fields = {}            model = haystack_get_model(app_label, model_name)            if model and model in indexed_models:                for key, value in raw_result.items():                    index = unified_index.get_index(model)                    string_key = str(key)                    if string_key in index.fields and hasattr(                            index.fields[string_key], 'convert'):                        # Special-cased due to the nature of KEYWORD fields.                        if index.fields[string_key].is_multivalued:                            if value is None or len(value) == 0:                                additional_fields[string_key] = []                            else:                                additional_fields[string_key] = value.split(                                    ',')                        else:                            additional_fields[string_key] = index.fields[string_key].convert(                                value)                    else:                        additional_fields[string_key] = self._to_python(value)                del (additional_fields[DJANGO_CT])                del (additional_fields[DJANGO_ID])                if highlight:                    sa = StemmingAnalyzer()                    formatter = WhooshHtmlFormatter('em')                    terms = [token.text for token in sa(query_string)]                    whoosh_result = whoosh_highlight(                        additional_fields.get(self.content_field_name),                        terms,                        sa,                        ContextFragmenter(),                        formatter                    )                    additional_fields['highlighted'] = {                        self.content_field_name: [whoosh_result],                    }                result = result_class(                    app_label,                    model_name,                    raw_result[DJANGO_ID],                    score,                    **additional_fields)                results.append(result)            else:                hits -= 1        if self.include_spelling:            if spelling_query:                spelling_suggestion = self.create_spelling_suggestion(                    spelling_query)            else:                spelling_suggestion = self.create_spelling_suggestion(                    query_string)        return {            'results': results,            'hits': hits,            'facets': facets,            'spelling_suggestion': spelling_suggestion,        }    def create_spelling_suggestion(self, query_string):        spelling_suggestion = None        reader = self.index.reader()        corrector = reader.corrector(self.content_field_name)        cleaned_query = force_str(query_string)        if not query_string:            return spelling_suggestion        # Clean the string.        for rev_word in self.RESERVED_WORDS:            cleaned_query = cleaned_query.replace(rev_word, '')        for rev_char in self.RESERVED_CHARACTERS:            cleaned_query = cleaned_query.replace(rev_char, '')        # Break it down.        query_words = cleaned_query.split()        suggested_words = []        for word in query_words:            suggestions = corrector.suggest(word, limit=1)            if len(suggestions) > 0:                suggested_words.append(suggestions[0])        spelling_suggestion = ' '.join(suggested_words)        return spelling_suggestion    def _from_python(self, value):        """        Converts Python values to a string for Whoosh.        Code courtesy of pysolr.        """        if hasattr(value, 'strftime'):            if not hasattr(value, 'hour'):                value = datetime(value.year, value.month, value.day, 0, 0, 0)        elif isinstance(value, bool):            if value:                value = 'true'            else:                value = 'false'        elif isinstance(value, (list, tuple)):            value = u','.join([force_str(v) for v in value])        elif isinstance(value, (six.integer_types, float)):            # Leave it alone.            pass        else:            value = force_str(value)        return value    def _to_python(self, value):        """        Converts values from Whoosh to native Python values.        A port of the same method in pysolr, as they deal with data the same way.        """        if value == 'true':            return True        elif value == 'false':            return False        if value and isinstance(value, six.string_types):            possible_datetime = DATETIME_REGEX.search(value)            if possible_datetime:                date_values = possible_datetime.groupdict()                for dk, dv in date_values.items():                    date_values[dk] = int(dv)                return datetime(                    date_values['year'],                    date_values['month'],                    date_values['day'],                    date_values['hour'],                    date_values['minute'],                    date_values['second'])        try:            # Attempt to use json to load the values.            converted_value = json.loads(value)            # Try to handle most built-in types.            if isinstance(                    converted_value,                    (list,                     tuple,                     set,                     dict,                     six.integer_types,                     float,                     complex)):                return converted_value        except BaseException:            # If it fails (SyntaxError or its ilk) or we don't trust it,            # continue on.            pass        return valueclass WhooshSearchQuery(BaseSearchQuery):    def _convert_datetime(self, date):        if hasattr(date, 'hour'):            return force_str(date.strftime('%Y%m%d%H%M%S'))        else:            return force_str(date.strftime('%Y%m%d000000'))    def clean(self, query_fragment):        """        Provides a mechanism for sanitizing user input before presenting the        value to the backend.        Whoosh 1.X differs here in that you can no longer use a backslash        to escape reserved characters. Instead, the whole word should be        quoted.        """        words = query_fragment.split()        cleaned_words = []        for word in words:            if word in self.backend.RESERVED_WORDS:                word = word.replace(word, word.lower())            for char in self.backend.RESERVED_CHARACTERS:                if char in word:                    word = "'%s'" % word                    break            cleaned_words.append(word)        return ' '.join(cleaned_words)    def build_query_fragment(self, field, filter_type, value):        from haystack import connections        query_frag = ''        is_datetime = False        if not hasattr(value, 'input_type_name'):            # Handle when we've got a ``ValuesListQuerySet``...            if hasattr(value, 'values_list'):                value = list(value)            if hasattr(value, 'strftime'):                is_datetime = True            if isinstance(value, six.string_types) and value != ' ':                # It's not an ``InputType``. Assume ``Clean``.                value = Clean(value)            else:                value = PythonData(value)        # Prepare the query using the InputType.        prepared_value = value.prepare(self)        if not isinstance(prepared_value, (set, list, tuple)):            # Then convert whatever we get back to what pysolr wants if needed.            prepared_value = self.backend._from_python(prepared_value)        # 'content' is a special reserved word, much like 'pk' in        # Django's ORM layer. It indicates 'no special field'.        if field == 'content':            index_fieldname = ''        else:            index_fieldname = u'%s:' % connections[self._using].get_unified_index(            ).get_index_fieldname(field)        filter_types = {            'content': '%s',            'contains': '*%s*',            'endswith': "*%s",            'startswith': "%s*",            'exact': '%s',            'gt': "{%s to}",            'gte': "[%s to]",            'lt': "{to %s}",            'lte': "[to %s]",            'fuzzy': u'%s~',        }        if value.post_process is False:            query_frag = prepared_value        else:            if filter_type in [                'content',                'contains',                'startswith',                'endswith',                'fuzzy']:                if value.input_type_name == 'exact':                    query_frag = prepared_value                else:                    # Iterate over terms & incorportate the converted form of                    # each into the query.                    terms = []                    if isinstance(prepared_value, six.string_types):                        possible_values = prepared_value.split(' ')                    else:                        if is_datetime is True:                            prepared_value = self._convert_datetime(                                prepared_value)                        possible_values = [prepared_value]                    for possible_value in possible_values:                        terms.append(                            filter_types[filter_type] %                            self.backend._from_python(possible_value))                    if len(terms) == 1:                        query_frag = terms[0]                    else:                        query_frag = u"(%s)" % " AND ".join(terms)            elif filter_type == 'in':                in_options = []                for possible_value in prepared_value:                    is_datetime = False                    if hasattr(possible_value, 'strftime'):                        is_datetime = True                    pv = self.backend._from_python(possible_value)                    if is_datetime is True:                        pv = self._convert_datetime(pv)                    if isinstance(pv, six.string_types) and not is_datetime:                        in_options.append('"%s"' % pv)                    else:                        in_options.append('%s' % pv)                query_frag = "(%s)" % " OR ".join(in_options)            elif filter_type == 'range':                start = self.backend._from_python(prepared_value[0])                end = self.backend._from_python(prepared_value[1])                if hasattr(prepared_value[0], 'strftime'):                    start = self._convert_datetime(start)                if hasattr(prepared_value[1], 'strftime'):                    end = self._convert_datetime(end)                query_frag = u"[%s to %s]" % (start, end)            elif filter_type == 'exact':                if value.input_type_name == 'exact':                    query_frag = prepared_value                else:                    prepared_value = Exact(prepared_value).prepare(self)                    query_frag = filter_types[filter_type] % prepared_value            else:                if is_datetime is True:                    prepared_value = self._convert_datetime(prepared_value)                query_frag = filter_types[filter_type] % prepared_value        if len(query_frag) and not isinstance(value, Raw):            if not query_frag.startswith('(') and not query_frag.endswith(')'):                query_frag = "(%s)" % query_frag        return u"%s%s" % (index_fieldname, query_frag)        # if not filter_type in ('in', 'range'):        #     # 'in' is a bit of a special case, as we don't want to        #     # convert a valid list/tuple to string. Defer handling it        #     # until later...        #     value = self.backend._from_python(value)class WhooshEngine(BaseEngine):    backend = WhooshSearchBackend    query = WhooshSearchQuery

五，项目总结

对于博客系统来讲，用JAVA开发的较多，Python开发的相对较少，功能完整又比较全面的更是不多，这个系统做的整体功能完整，界面简洁大方，使用了较新的组件和技术框架，相对比较优秀。

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