webpy分页类 + 上传类

webpy没有分页类。按照php的思路。自己编了一个。数据库用的是sqlite。　　

class Page(object):
    ‘‘‘分页类‘‘‘
    def __init__(self,page_size,data_count,page_current):
        import math
        self.size = page_size
        self.data_count = data_count
        self.page_current = int(page_current)
        self.page_max = int(math.ceil(self.data_count * 0.1 * 10 / self.size ))

        self.page_current = 1 if self.page_current < 1 else self.page_current
        self.page_current = self.page_max if self.page_current > self.page_max else self.page_current

        self.offset = ( self.page_current - 1) * self.size
    def set_url(self,url):
        if "?" in url:
            f_url = url.split("page")[0]
            if "&" in url:
                f_url += "&"
        else:
            f_url = url + "?"
        self.url = f_url
    def get_html(self):
        self.page_pre = self.page_current - 1
        self.page_next = self.page_current + 1
        if self.page_max in (0,1) :
            html = u‘‘‘
                <span>首页</span>
                <span>上一页</span>
                <span>下一页</span>
                <span>尾页</span>
            ‘‘‘
        elif self.page_current <= 1:
            html = u‘‘‘
                <span>首页</span>
                <span>上一页</span>
                <span><a href="{self.url}page={self.page_next}">下一页</a></span>
                <span><a href="{self.url}page={self.page_max}">尾页</a></span>
            ‘‘‘.format(self=self)
        elif self.page_current >= self.page_max:
            html = u‘‘‘
                <span><a href="{self.url}page=1">首页</a></span>
                <span><a href="{self.url}page={self.page_pre}">上一页</a></span>
                <span>下一页</span>
                <span>尾页</span>
            ‘‘‘.format(self=self)
        else:
            html = u‘‘‘
                <span><a href="{self.url}page=1">首页</a></span>
                <span><a href="{self.url}page={self.page_pre}">上一页</a></span>
                <span><a href="{self.url}page={self.page_next}">下一页</a></span>
                <span><a href="{self.url}page={self.page_max}">尾页</a></span>
            ‘‘‘.format(self=self)
        banner = u‘‘‘第<span id="spanPageNum">{self.page_current}</span>页/共<span id="spanTotalPage">{self.page_max}</span>页‘‘‘.format(self=self)
        html = "<div>%s</div>"%(html + banner)

        if self.data_count > self.size:
            return html
        else:
            return ""

调用：

        page_current = i.get("page",1)

　　　　 page_size = 5  #每页显示几条数据
        data_count = (db.select("messages",what="count(content) c")[0]["c"])    #总数据量

        page = conf.Page(page_size,data_count,page_current)
        page.set_url(web.ctx.fullpath)
        page_html = page.get_html()

        data = db.select("messages",order="datetime desc",limit=page.size,offset=page.offset)

上传文件类：

class Upload(object):
    u‘‘‘文件上传类，接受excel，csv文件‘‘‘

    def __init__(self,upfile):
        import os
        self.file = upfile
        self.file_ext = upfile.filename.split(".")[-1]
        self.file_name = upfile.filename.split(".")[-2]
        #self.file_path = upfile.filename.replace(‘\\‘,‘/‘)
    def save(self):
        ‘‘‘将文件存入服务器文件夹‘‘‘
        import os,time
        if not self.file_ext in ("xlsx","xls"):
            return u"文件类型错误"
        try:
            os.mkdir(r"static/upload/file_dir/")
            save_path = r"static/upload/file_dir/"
        except:
            save_path = r"static/upload/file_dir/"

        now = str(time.time()).split(".")[0]

        try:
            with open(save_path+"%s"%(now+"."+self.file_ext),"wb") as f:
                f.write(self.file.file.read())
            self.filepath = save_path+"%s"%(now+"."+self.file_ext)
        except:
            pass

    def get_data(self):
        ‘‘‘返回数据‘‘‘
        import os
        # try:
            # import openpyxl
            # wb = openpyxl.load_workbook(self.filepath)
            # ws = wb.get_sheet_by_name(wb.get_sheet_names()[0])
            # data = [[j.value for j in i] for i in ws.rows[2:]]
            # return data
        # except:
            # return "openpyxl is not exists!"
        try:
            import xlrd
            wb = xlrd.open_workbook(self.filepath)
            ws = wb.sheet_by_index(0)
            data = [ws.row_values(i) for i in range(ws.nrows)][2:]
            return data
        except:
            return "xlrd is not exists!"
        finally:
            os.remove(self.filepath)

class Upload(object):
    u‘‘‘文件上传类，接受excel文件‘‘‘

    def __init__(self,upfile):
        import os
        self.file = upfile
        self.file_ext = upfile.filename.split(".")[-1]
        self.file_name = upfile.filename.split(".")[-2]
        #self.file_path = upfile.filename.replace(‘\\‘,‘/‘)
    def save(self):
        ‘‘‘将文件存入服务器文件夹‘‘‘
        import os,time
        if not self.file_ext in ("xlsx","xls"):
            return u"文件类型错误"
        try:
            os.mkdir(r"static/upload/file_dir/")
            save_path = r"static/upload/file_dir/"
        except:
            save_path = r"static/upload/file_dir/"

        now = str(time.time()).split(".")[0]

        try:
            with open(save_path+"%s"%(now+"."+self.file_ext),"wb") as f:
                f.write(self.file.file.read())
            self.filepath = save_path+"%s"%(now+"."+self.file_ext)
        except:
            pass

    def get_data(self):
        ‘‘‘返回数据‘‘‘
        import os
        # try:
            # import openpyxl
            # wb = openpyxl.load_workbook(self.filepath)
            # ws = wb.get_sheet_by_name(wb.get_sheet_names()[0])
            # data = [[j.value for j in i] for i in ws.rows[2:]]
            # return data
        # except:
            # return "openpyxl is not exists!"
        try:
            import xlrd
            wb = xlrd.open_workbook(self.filepath)
            ws = wb.sheet_by_index(0)
            data = [ws.row_values(i) for i in range(ws.nrows)][2:]
            return data
        except:
            return "xlrd is not exists!"
        finally:
            os.remove(self.filepath)