Programming VIP

1.mybatis multi-table query one-to-one One-to-one (one containing another instance) <!-- One-to-one Association query-resultMap --> <resultMap type="order" id="order_user_map"> <!-- id Tags are used to bind primary keys --> <id property="id" column="id"/> <!-- Use re ...

Ask God to help solve the problem of android mobile phone taking function. Using provider will cause APP to flash back and go in when it opens. One In Manifest, user rights corresponding to provider and camera are added: <application <provider android:name="android.support.v4.con ...

Preface There's a person (dead demand) running over to tell you, these are all output to me as a report, pdf format, so there's the following one, take notes, later useful directly come to get it. Looking online, we found that everyone is using itext.IText is a well-known open project, a java class library for generating PDF documents. Through ...

thinking First, test whether Spring MVC and Mysteries are available, whether the environment is correct, and then use Spring integration. Build an integrated environment first 2) Build Spring configuration environment 3) Spring integrates Spring MVC framework 4) Spring integrates Mybatis frameworkReq ...

Although new transitional animations have been introduced since Android 5.0, they are usually used only for specific occasions, and the general-purpose transitional animation of activity.overridePending Transition () is still common. Principle analysis startActivity(Intent(this,SecondActivity::class.java)) overridePendingTransition(enterAnim, e ...

intent introduction So how on earth do we jump from one window to another, and how does information from one window pass to another? Yes, through intent. Let's briefly introduce intent. There are two ways to use Intent in Android: explicit Intent and implicit Intent. //Explicit intent (this code ...

1. overview In this tutorial, we will explore how to use two different strategies to improve client retry: exponential regression and jitter. 2. retry In distributed systems, network communication between multiple components may fail at any time. Client applications handle these failures by implementing retries. Imagine that we have a client ap ...

MAVEN Download and Installation maven's download address: http://maven.apache.org/download.cgi Path D: java apache-maven-3.6.2 after decompression;Add a new system variable [MAVEN_HOME], and replace the variable name with its own local decompression path Added value of system variable [Path]:%MAVEN_HOME%bin Run cmd and enter mvn v ...

Links to the original text: https://www.cnblogs.com/huolongluo/p/5988644.html Thank you guys: https://www.cnblogs.com/huolongluo/p/5988644.html Because the project needs to make a broken line map, according to the date to show the cor ...

brief introduction In the last article, we talked about using Hystrix to implement fault tolerance. In addition, Hystrix provides near real-time monitoring. This article describes how to monitor services and how to use Hystrix Dashboard to graphicalize monitoring data. Project introduction sc-parent, parent module (see Spring Cloud Learning No ...