一个练习项目，好玩的bbs-python-cherrypy

代码：

import cherrypy
import MySQLdb
import json
import hashlib
import random
import math
import os
from datetime import datetime

class DateEncoder(json.JSONEncoder):
    def default(self, obj):
        if isinstance(obj, datetime):
            return obj.strftime("%Y-%m-%d %H:%M:%S")
        else:
            return json.JSONEncoder.default(self, obj)
        
class Root(object):
    conn = None
    cursor = None
    secretKey = 'saacac3423@21212'
    pagesize = 20
    default_dir = ''
    
    def __init__(self):
        self.conn = MySQLdb.Connection('127.0.0.1', 'root', '123456', 'my_bbs')
        self.cursor = self.conn.cursor(cursorclass = MySQLdb.cursors.DictCursor)
        self.default_dir = 'static'
        
    def __del__(self):
        self.cursor.close()
        self.conn.close()
    
    """ 提供静态文件的访问 """
    @cherrypy.expose
    def static(self, *args, **kwargs):
        path = os.path.dirname(__file__)+'/'+self.default_dir +'/'+ os.path.join(*args)
        if os.path.isfile(path):
            return cherrypy.lib.static.serve_file(path)
        else:
            raise cherrypy.HTTPError(404, 'File not found')
 
        
    def readTemplate(self, tpName, data = {}):
        file = open("templates/" + tpName, "r", encoding="utf-8")
        content = file.read()
        file.close()
        
        for k,v in data.items():
            content = content.replace("${"+k+"}", v)
        
        return content
        
    def getloginuserinfo(self, sessionId):
        try:
            sessionIdHead = cherrypy.request.headers['sessionId']
        except:
            sessionIdHead = ''
        
        if sessionIdHead is not None and sessionIdHead != '':
            sessionId = sessionIdHead
            
        sql = "select id,username,nickname,addTime,sessionId from user where sessionId='%s'" % sessionId
        self.cursor.execute(sql)
        data = self.cursor.fetchone()
        if data is None:
            data = {'id' : 0, 'username' : '', 'nickname' : '', 'addTime' : '', 'sessionId' : ''}
        
        return data
        
    def response(self, code, msg, data):
        if code != 0:
            result = {'code' : code, 'msg' : msg, 'data' : None}
        else:
            result = {'code' : 0, 'msg' : '', 'data' : data}
            
        return result
    
    def error(self, code, msg):
        return self.response(code, msg, None)
    
    def success(self, data = {}):
        return self.response(0, '', data)
    
class User(Root):
    @cherrypy.expose
    def register(self, username, password, nickname):
        sql = "select id,username,nickname,addTime from user where username='%s'" % username
        self.cursor.execute(sql)
        data = self.cursor.fetchone()
        if data != None:
            result = self.error(1, '用户名已经存在')
            return json.dumps(result, cls = DateEncoder, ensure_ascii = False)

        try:
            passwordMd5 = hashlib.md5(password.encode(encoding='utf-8')).hexdigest()
            sql = "insert into user(username, password, nickname) value('%s', '%s', '%s')" % (username, passwordMd5, nickname)
            self.cursor.execute(sql)
            self.conn.commit()
            insertId = self.cursor.lastrowid
            result = self.success(insertId)
        except MySQLdb.Error as e:
            self.conn.rollback()
            result = self.error(1, '注册失败')
            
        return json.dumps(result, cls = DateEncoder, ensure_ascii = False)
    
    @cherrypy.expose
    def login(self, username, password):
        passwordMd5 = hashlib.md5(password.encode(encoding='utf-8')).hexdigest()
        sql = "select id,username,nickname,addTime from user where username='%s' and password='%s'" % (username, passwordMd5)
        self.cursor.execute(sql)
        data = self.cursor.fetchone()
        if data == None:
            result = self.error(1, '用户名或者密码错误')
            return json.dumps(result, cls = DateEncoder, ensure_ascii = False)

        tmpSessionId = self.secretKey + str(data['id']) + str(data['addTime'])
        tmpSessionId = hashlib.md5(tmpSessionId.encode(encoding='utf-8')).hexdigest()
        try:
            sql = "update user set sessionId='%s' where id=%s" % (tmpSessionId, data['id'])
            self.cursor.execute(sql)
            self.conn.commit()
            data['sessionId'] = tmpSessionId
            result = self.success(data)
        except MySQLdb.Error as e:
            self.conn.rollback()
            result = self.error(1, '保存会话id失败')
            
        return json.dumps(result, cls = DateEncoder, ensure_ascii = False)
    
    @cherrypy.expose
    def logout(self, sessionId):
        data = super().getloginuserinfo(sessionId)
        
        if data == None:
            result = self.success(None)
            return json.dumps(result, cls = DateEncoder, ensure_ascii = False)
        
        if data['sessionId'] == '':
            result = self.success(data)
            return json.dumps(result, cls = DateEncoder, ensure_ascii = False)

        try:
            sql = "update user set sessionId='' where sessionId='%s'" % sessionId
            self.cursor.execute(sql)
            self.conn.commit()
            data['sessionId'] = ''
            result = self.success(data)
        except MySQLdb.Error as e:
            self.conn.rollback()
            result = self.error(1, '删除会话id失败')
            
        return json.dumps(result, cls = DateEncoder, ensure_ascii = False)
    
    @cherrypy.expose
    def getuserinfo(self, sessionId):
        data = super().getloginuserinfo(sessionId.lower())
        if data == None:
            result = self.error(1, '获取用户信息失败')
        elif data['id'] <= 0:
            result = self.error(1, '请先登录')
        else:
            result = self.success(data)
            
        return json.dumps(result, cls = DateEncoder, ensure_ascii = False)
    
class Post(Root):
    @cherrypy.expose
    def list(self, keyword = '', page = 1):
        page = int(page)
        if page <= 0:
            page = 1
        addsql = " isDel=0 "
        if keyword is not None and keyword != '':
            addsql = " isDel=0 and title like '%"+keyword+"%' "
            
        start = (page - 1) * self.pagesize
        
        sql1 = "select count(1) as count from content where %s" % addsql
        self.cursor.execute(sql1)
        countdata = self.cursor.fetchone()
        totalpage = math.ceil(countdata['count'] / float(self.pagesize))
        
        data = []
        if totalpage > 0:
            sql2 = "select id,title,userId,userNickename,replyNum,updateTime from content where %s order by updateTime desc limit %s,%s" % (addsql, start, self.pagesize)
            self.cursor.execute(sql2)
            data = self.cursor.fetchall()
        
        result = self.success({'totalpage' : totalpage, 'data' : data})
        
        return json.dumps(result, cls = DateEncoder, ensure_ascii = False)
    
    @cherrypy.expose
    def detail(self, id = 0):
        sql = "select id,title,content,userId,userNickename,replyNum,updateTime from content where isDel=0 and id=%s" % id
        self.cursor.execute(sql)
        data = self.cursor.fetchone()
        
        result = self.success(data)
        
        return json.dumps(result, cls = DateEncoder, ensure_ascii = False)
    
    @cherrypy.expose
    def add(self, title, content, sessionId):
        userinfo = super().getloginuserinfo(sessionId)
        userId = userinfo['id']
        userNickename = userinfo['nickname']
        
        if userId <= 0:
            result = self.error(1, '请先登录')
            return json.dumps(result, cls = DateEncoder, ensure_ascii = False)

        try:
            sql = "insert into content(title, content, userId, userNickename) value('%s', '%s', %s, '%s')" % (title, content, userId, userNickename)
            self.cursor.execute(sql)
            self.conn.commit()
            insertId = self.cursor.lastrowid
            result = self.success(insertId)
        except MySQLdb.Error as e:
            self.conn.rollback()
            result = self.error(1, '发帖失败')
        
        return json.dumps(result, cls = DateEncoder, ensure_ascii = False)
    
    @cherrypy.expose
    def edit(self, id, title, content, sessionId):
        userinfo = super().getloginuserinfo(sessionId)
        userId = userinfo['id']
        userNickename = userinfo['nickname']
        
        if userId <= 0:
            result = self.error(1, '请先登录')
            return json.dumps(result, cls = DateEncoder, ensure_ascii = False)

        try:
            sql = "update content set title='%s',content='%s',userId=%s,userNickename='%s' where id=%s and userId=%s" % (title, content, userId, userNickename, id, userId)
            self.cursor.execute(sql)
            self.conn.commit()
            result = self.success(None)
        except MySQLdb.Error as e:
            self.conn.rollback()
            result = self.error(1, '编辑帖子失败')
        
        return json.dumps(result, cls = DateEncoder, ensure_ascii = False)
    
    @cherrypy.expose
    def delete(self, id, sessionId):
        userinfo = super().getloginuserinfo(sessionId)
        userId = userinfo['id']
        userNickename = userinfo['nickname']
        
        if userId <= 0:
            result = self.error(1, '请先登录')
            return json.dumps(result, cls = DateEncoder, ensure_ascii = False)

        try:
            sql = "update content set isDel=1 where id=%s and userId=%s" % (id, userId)
            self.cursor.execute(sql)
            self.conn.commit()
            result = self.success(None)
        except MySQLdb.Error as e:
            self.conn.rollback()
            result = self.error(1, '删除帖子失败')
        
        return json.dumps(result, cls = DateEncoder, ensure_ascii = False)
    
class Reply(Root):
    @cherrypy.expose
    def list(self, contentId = 0, page = 1):
        page = int(page)
        if page <= 0:
            page = 1
        start = (page - 1) * self.pagesize
        
        sql1 = "select count(1) as count from reply where isDel=0 and contentId=%s" % contentId
        self.cursor.execute(sql1)
        countdata = self.cursor.fetchone()
        totalpage = math.ceil(countdata['count'] / float(self.pagesize))
        
        data = []
        if totalpage > 0:
            sql2 = "select id,content,replyUserId,replyUserNickename,addTime from reply where isDel=0 and contentId=%s order by id asc limit %s,%s" % (contentId, start, self.pagesize)
            self.cursor.execute(sql2)
            data = self.cursor.fetchall()
        
        result = self.success({'totalpage' : totalpage, 'data' : data})
        
        return json.dumps(result, cls = DateEncoder, ensure_ascii = False)
    
    @cherrypy.expose
    def detail(self, id = 0):
        sql = "select id,content,replyUserId,replyUserNickename,addTime from reply where isDel=0 and id=%s" % id
        self.cursor.execute(sql)
        data = self.cursor.fetchone()
        
        result = self.success(data)
        
        return json.dumps(result, cls = DateEncoder, ensure_ascii = False)
    
    @cherrypy.expose
    def add(self, contentId, content, sessionId):
        userinfo = super().getloginuserinfo(sessionId)
        userId = userinfo['id']
        userNickename = userinfo['nickname']
        
        if userId <= 0:
            result = self.error(1, '请先登录')
            return json.dumps(result, cls = DateEncoder, ensure_ascii = False)

        try:
            sql2 = "update content set replyNum=replyNum+1 where id=%s" % contentId
            self.cursor.execute(sql2)
            sql1 = "insert into reply(contentId, content, replyUserId, replyUserNickename) value(%s, '%s', %s, '%s')" % (contentId, content, userId, userNickename)
            self.cursor.execute(sql1)
            
            self.conn.commit()
            insertId = self.cursor.lastrowid
            result = self.success(insertId)
        except MySQLdb.Error as e:
            self.conn.rollback()
            result = self.error(1, '回复失败')
        
        return json.dumps(result, cls = DateEncoder, ensure_ascii = False)
    
    @cherrypy.expose
    def edit(self, id, content, sessionId):
        userinfo = super().getloginuserinfo(sessionId)
        userId = userinfo['id']
        userNickename = userinfo['nickname']
        
        if userId <= 0:
            result = self.error(1, '请先登录')
            return json.dumps(result, cls = DateEncoder, ensure_ascii = False)

        try:
            sql = "update reply set content='%s',replyUserId=%s,replyUserNickename='%s' where id=%s and replyUserId=%s" % (content, userId, userNickename, id, userId)
            self.cursor.execute(sql)
            self.conn.commit()
            result = self.success(None)
        except MySQLdb.Error as e:
            self.conn.rollback()
            result = self.error(1, '编辑回复失败')
        
        return json.dumps(result, cls = DateEncoder, ensure_ascii = False)
    
    @cherrypy.expose
    def delete(self, id, sessionId):
        userinfo = super().getloginuserinfo(sessionId)
        userId = userinfo['id']
        userNickename = userinfo['nickname']
        
        if userId <= 0:
            result = self.error(1, '请先登录')
            return json.dumps(result, cls = DateEncoder, ensure_ascii = False)

        sql = "select id,content,replyUserId,replyUserNickename,addTime,contentId from reply where isDel=0 and id=%s" % id
        self.cursor.execute(sql)
        contentdata = self.cursor.fetchone()
        
        if contentdata is None:
            result = self.error(1, '回复不存在')
            return json.dumps(result, cls = DateEncoder, ensure_ascii = False)

        try:
            sql2 = "update content set replyNum=replyNum-1 where id=%s" % contentdata['contentId']
            self.cursor.execute(sql2)
            sql1 = "update reply set isDel=1 where id=%s and replyUserId=%s" % (id, userId)
            self.cursor.execute(sql1)
            
            self.conn.commit()
            result = self.success(None)
        except MySQLdb.Error as e:
            self.conn.rollback()
            result = self.error(1, '删除回复失败')
        
        return json.dumps(result, cls = DateEncoder, ensure_ascii = False)
    
class Index(Root):
    @cherrypy.expose
    def index(self):
        return "此站接口使用python.cherrypy实现，<a href='api.html' target='_blank'>接口列表</a>";

if __name__ == '__main__':
    server_config = {
        'server.socket_host': '0.0.0.0',
        'server.socket_port': 1083
    }
    cherrypy.config.update(server_config)
    
    cherrypy.tree.mount(Index(), '/', {})
    cherrypy.tree.mount(User(), '/user', {})
    cherrypy.tree.mount(Post(), '/post', {})
    cherrypy.tree.mount(Reply(), '/reply', {})
    
    cherrypy.engine.start()
    cherrypy.engine.block()

 

输出：

C:\Users\jsb>D:\software\Python310\python.exe D:\workspace\studys\study_bbs\start_web_cherrypy.py
[02/Sep/2024:14:00:15] ENGINE Bus STARTING
CherryPy Checker:
The Application mounted at '' has an empty config.

[02/Sep/2024:14:00:15] ENGINE Started monitor thread 'Autoreloader'.
[02/Sep/2024:14:00:15] ENGINE Serving on http://0.0.0.0:1083
[02/Sep/2024:14:00:15] ENGINE Bus STARTED