文件操作

    def load_file(self, filename):      #读文件
        data = {}
        if os.path.exists(filename) and os.path.getsize(filename) > 0:
            try:
                with open(filename, "rb") as r:
                    tmp = r.read()
                    if tmp:
                        data = json.loads(tmp)
            except Exception, ex:
                self.logger.error(ex)
        return data

    # save init to file
    def save_file(self, filename, data):   # 写文件
        try:
            with open(filename, "wb") as f:
                json.dump(data, f, indent=4, sort_keys=True, default=str)
        #f.write(json.dumps(data, indent=4, sort_keys=True, default=str))
            return True
        except Exception, ex:
            self.logger.error(ex)
            return False