Java--JDBC database connection pool

Java--JDBC database connection pool Blog description The information involved in this article comes from Internet collation and personal summary, which means personal learning and experience summary. If there is any infringement, please contact me to delete, thank you! concept In fact, it is a container (Collection) for database connection. A ...

Posted by hayson1991 on Tue, 16 Jun 2020 01:05:54 -0700

Java--JDBC database connection pool

Java--JDBC database connection pool Blog description The information involved in this article comes from Internet collation and personal summary, which means personal learning and experience summary. If there is any infringement, please contact me to delete, thank you! concept In fact, it is a container (Collection) for database connection. A ...

Posted by luke_barnes on Mon, 15 Jun 2020 22:21:15 -0700

Building a big data environment for user portrait -- building a real-time user portrait from scratch

​ In this chapter, we started to formally build a big data environment, with the goal of building a stable big data environment that can be operated and monitored. We will use Ambari to build the underlying Hadoop environment, and use the native way to build Flink, Druid, Superset and other real-time computing environments. Use the combinatio ...

Posted by allinurl on Sun, 31 May 2020 20:43:34 -0700

Learn from me about the design and implementation of spring boot development backend management system 8: matrxi web permission

The last article describes the idea of permission control implemented by matrix web as a whole. Let's review: First of all, the user needs to log in and fill in the user name and password. The backend receives the login request and verifies the user and password. After the verification is successful, the Token is generated according to the u ...

Posted by sparrrow on Thu, 28 May 2020 19:14:15 -0700

Love! Share a spring boot based API, restful API project seed (skeleton)

Preface Recently, I have used Spring Boot with MyBatis, general Mapper plug-in and PageHelper paging plug-in to do several small and medium-sized API projects. I feel that it is very comfortable to develop this project with this set of framework and tools, and the team's response is also good. In the process of project construction and develop ...

Posted by northk on Tue, 05 May 2020 03:08:29 -0700

Spring integrates MyBatis bulk insertion

The for loop has been used for single insertion before. When the traffic volume increases to tens of thousands, a Connection is null error will be reported. This is the first time I have encountered this business scenario. Record the following. If I know more, I will continue to update this article. Combined posts: ...

Posted by dwfait on Mon, 04 May 2020 08:33:47 -0700

Using mybatis plus 3.1.2 and Druid 1.1.20 invalidates the serialization and deserialization of localdateformat to a custom date format string

Time record April 21, 2020 Preface       At present, the project reconstruction adopts springboot2.1.13 to integrate mybatis-plus3.1.2 and druid connection pool 1.1.20. When the response body json result set and the request body json result set are returned in the controller controller controller, both serialization and dese ...

Posted by dnice on Mon, 20 Apr 2020 21:29:42 -0700

Knowledge point ③: druid configuration and use in Spring Boot

Spring Boot druid configuration rely on Add druid dependency to Spring Boot project <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>${druid.version}</version> </dependency> To configure spring.datasource.url= spring.datasource.username= spring.datasour ...

Posted by madd_maxx on Sun, 05 Apr 2020 18:53:31 -0700

Introduction to using JDBC template in Spring

Spring provides a powerful template class -- JDBC template to simplify JDBC operations. The data source DataSource object and the template JDBC template object can be defined in the configuration file in the form of Bean, giving full play to the power of dependency injection.   Case: use JDBC template to query all books 1. Introduce jar package ...

Posted by Loafin on Fri, 03 Apr 2020 01:06:22 -0700

Spring boot (III) integration with mybatis

Preface With the release of spring boot2.0. The API interface of the project team has considered the transformation to spring boot. We always use mybatis as the underlying interface, so in this article, I specially practiced the integration of mybatis in spring boot.   1, Preparations 1,pom.xml   1 <dependencies> 2 &lt ...

Posted by ntnwwnet on Tue, 31 Mar 2020 02:57:27 -0700