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Design of Service layer Create the required package Service package: store the interface and implementation class of service exception package: store some exceptions of service (repeat seckill, close seckill, etc.) Dto package: it also stores data. The difference between dto and entity is that ...

Recently, a hybrid APP of Android native H5 was developed on the left. Before that, we haven't summarized the interaction methods between Android native and H5. Here's a summary: 1. hybrid communication is mainly the communication between the front-end JS and our Android. This is the most basic communic ...

Jmeter test Dubbo interface Preface dubbo Jmeter TestNG Spring This article introduces two ways to use jmeter to test dubbo interface Call through the way of jmeter secondary development (jar) (recommended, with requirements for coding ability) Call through JMeter plugins Dubbo Call through ...

abstract Beautiful Soup is a Python library that can extract data from HTML or XML format files by parsing HTML or XML data into Python objects for easy processing through Python code. Document environment Test environment for code in this document Instructions for using Beautifu Soup The basic function of Beautiful Soup is to find and e ...

Now the use of QR code is more and more widely, and it can be seen almost everywhere, and almost all of the company's related projects are related to QR code scanning, so summarize your own experience of using QR code, and always feel that something should be done to record your growth, so that your gro ...

  Original link SmartRefreshLayout is a "smart" or "smart" pull-down refresh layout. Because of its "intelligence", it not only supports all views, but also supports multiple nested View structures. It inherits from ViewGroup instead of FrameLayout or LinearLayout, imp ...

We start from six aspects: plug-in configuration, plug-in writing, plug-in operation principle, plug-in registration and interception time, initialization plug-in, paging plug-in principle. 1. Plug in configuration Mybatis plug-ins are configured in the configuration. During initialization, these plug ...

Preface Record the learning process, continued from the previous two sections The implementation of AOP based on xml configuration file inevitably faces the situation of overstaffed xml file, and the configuration process is troublesome. Annotation annotation technology can solve these problems text ...

1. Brief description of off-screen First of all, there are several ways to extinguish the screen: 1. The user presses the Power key to destroy the screen; 2. The mobile phone will go out of the screen after being automatically placed for a period of time; 3.Sensor goes off screen. The reasons for the ...

Mycat currently does not fully support versions of MySQL 8 or above, which may cause problems such as incorrect passwords when Mycat connects to MySQL 8 because the new version does not encrypt the password the same way as the old version.There is also the time zone issue, and the new version of the connection requires additional time zone par ...