yanglun005的博客

文件上传，报错：IOError: [Errno 13] Permission denied

yanglun005 — Wed, 30 Sep 2020 18:15:31 +0800

文件上传，报错：IOE error路径错误提示：E:\pythonProject1\static/uploads 原代码如下： f=request.files['file'] basepath = path.abspath(path.dirname(__file__)) upload_path=path.join(basepath,"static/uploads") f.save(upload_path,secure_filename(f.filename)) 待上传文件目录： 1）后半段显然与前面不

python 使用psycopg2执行sql语句传参的正确样例

yanglun005 — Sat, 19 Sep 2020 22:21:19 +0800

python 使用psycopg2执行sql语句传参的正确样例 docker_sqlconnect.py # -*- coding: UTF-8 -*- import psycopg2 class docker_sqlconnect(): @staticmethod def db_connect(): # 建立数据库连接 conn = psycopg2.connect(database="flow", user="postgres", password="postgre

ssm项目，后端分页的数据流梳理

yanglun005 — Sun, 23 Aug 2020 16:53:11 +0800

梳理后端分页的数据流控制台输出结果： @Test类的代码内容：创建service层对应的对象，调用方法返回page public class ApplicationContextTest { private ApplicationContext ctx = null; private SalesChanceService salservice = null; { ctx = new ClassPathXmlApplicationContext("applicationCont

spring自动装配bean失败报错：org.springframework.beans.factory.BeanCreationException: Could not autowire field

yanglun005 — Sat, 22 Aug 2020 12:02:21 +0800

报错： Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.springframework.context.support.ResourceBundleMessageSource com.yanglun.crm.handler.UserHandler.messageSource; nested exception is org.springframe

ssm项目，页面进行用户登录操作，对应后台流程梳理

yanglun005 — Fri, 21 Aug 2020 15:45:38 +0800