Programming VIP

1, Monitor 1.1. Function of monitor +++What is a monitor? Listener: it is mainly used to listen to the creation or destruction of specific objects and the change of properties! Is a common java class that implements a specific interface! +++What objects need to be monitored? Par ...

1. token has two main functions: (1) Prevent form from being submitted repeatedly (set the time limit) Principle: generate a unique random identification number on the server side. The technical term is Token. At the same time, save the Token in the Session domain of the current user. Then the Token is ...

When we used Servlet + JSP to develop web applications, we usually used the four scopes of Servlet: request,session,page,application to pass values to the page. Spring MVC certainly supports the native APIs of these servlets, but it also provides us with more powerful API support. Let's discuss how spri ...

Recently, the traditional Servlet+jsp method is used to realize the function of uploading the user's head image. It is found that it is much more difficult than using the spring boot framework to upload images. In the middle, there are also various problems. Please record them. Upload your head Firs ...

review In the previous article, we implemented the layout and publishing function of the article publishing page. There are some problems in it. In this article, we solved the problems and started to display the article list. 1 effect preview 1.1 writing articles After logging in successfully, w ...

JSP: 1. instruction *Function: used to configure JSP pages and import resource files * format: <% @ instruction name property name 1 = property value 1 property name 2 = property value 2...% > * classification: 1. page: configure the *contentType: equivalent to response.setContentType() ...

Article directory Third party components of the flash framework flask-session WTForms Verification method DBUtils database connection pool websocket Group chat Single chat Third party components of the flash framework flask-session Third party session, which is stored in the local database. ...

Process model data: If data is needed for jump, VM can use the following methods ModelAndView,ModelMap,Map,Model Data placement request Scope of action //Example: public String testModelMap(ModelMap mm){ //The returned ModelAndView has both data and view Student student = new Student(); st ...

Personal notes thank you Handwritten digit recognition Reference link: https://blog.csdn.net/qq_/article/details/80450741 1. import package import tensorflow as tf from tensorflow.examples.tutorials.mnist import input_data 2. Import data set mnist = input_data.read_data_sets('MNIST_data',one_ho ...

Catalog 1. Activation function 1.1 hyperbolic tangent function and Sigmoid function 2. Loss function (cost function) 2.1 L1 norm loss function 2.2 L2 norm loss function 2.3 quadratic cost function 2.4 cross entropy cost function 2.5 log likelihood cost 3. Demo code 1. Activation function The i ...