Programmer Group

We will analyze the whole project of common service, record the whole construction process, and let more people to learn. First, before building the common service of spring cloud, we need to prepare the following technologies: Maven (project construction), Spring Boot, Spring Cloud, microservice concept, decentralization idea, distribution, e ...

                    ; The Hadoop cluster depends on the following software: jdk, ssh, etc., so as long as these two items and Hadoop related packages are put into the image; Profile preparation 1. Hadoop related configuration files: core-site.xm ...

Tomcat is implemented as a servlet container, which is a lightweight application server developed based on Java language. As an application server, Tomcat has the advantages of full open source, light weight, stable performance, low deployment cost, etc., so it has become the first choice for java development and application deployment at pres ...

With the activiti framework, you first need to create a bpmn flowchart. There are two choices: one is the plug-in that comes with the ide (eclipse is good, not to mention it; the other is the plug-in that is really hard to use and has not been updated for several years); the other is the tool that activiti officially provides. activiti-app (Ver ...

When the doFilterInternal in the filter writes the business code, it needs to use the spring bean component. It is found that the bean component cannot be initialized in the filter, which is NullpointException. After checking, the path of the scan package is OK. Finally, determine the problem caused by the loading order of ...

Article directory I. Basic operation How to respond to requests 1. ModelAndView mode 2. The server does not respond to the result to the client Returns a string 4. Return to a page Absolute path Relative path 5. Prefix and suffix Configure view resolver Redirect (add a redirect) HttpServletRequest and HttpServletResponse ...

Background: Before last year, we could upload web resources in batches according to the directory WebResourceUtility. Yesterday, we found that it was useless. It was not very convenient to get the source code of WebResourceUtility and change it. I felt that the official code was too redundant and too long, which was not in line with my simple ...

SpringBoot e-commerce project mall (20k+star) address: https://github.com/macrozheng/mall abstract Spring Cloud Security provides a series of solutions for building secure SpringBoot applications, which can be implemented with Oauth2. The usage of single sign-on is described in detail in this article. Introduction to Single Sign-on Single Sign ...

In recent projects, it has been found that in Huawei mobile phones or some full screen mobile phones, dialog pop-up boxes may have various adaptation problems. Using WindowManager to dynamically modify dialog can perfectly solve this problem //Dialog XML layout final View vv = View.inflate(context, R.layout.pay, null); ...

Spring Cloud Stream is a framework for building message driven microservices. Based on Spring Boot, the framework integrates spring integration to connect message broker middleware (RabbitMQ, Kafka, etc.), provides personalized automatic configuration implementation, and introduces three core concepts: publish subscribe, consumption group and p ...