Spring JdbcTemplate

I wrote an article yesterday Why don't many people want to use hibernate? Blog, with the majority of ape friends to discuss the advantages and disadvantages of hibernate and the way to connect to the database, go home to study, found that Spring JdbcTemplate is very useful, made a summary, share to you. Disclaimer: This article is just a littl ...

Added by tooNight on Tue, 14 Jan 2020 11:05:31 +0200

Xuecheng Online - day 11 - handout - Search Service II

3.3 build ES environment3.3.1 ES installationThe development environment uses the ES stand-alone environment to start the ES server.  Note: for the old ES environment, you can delete elasticsearch-6.2.1\data\nodes directory to completely clean up the ES environment.  Install elasticsearch h ...

Added by lilywong on Tue, 14 Jan 2020 05:33:57 +0200

Several pits synchronized to ES using logstash

1. Preface Record several issues encountered when using logstash to synchronize data from sqlserver to ES.Version used is es6.8.3+logstash6.8.3 2.logstash profile 2.1input input { jdbc { jdbc_driver_library => "/usr/local/logstash-6.8.3/logstashconfs/sqljdbc4.jar"#Driver jar package for sqlserver jdbc_driver_clas ...

Added by jarvishr on Sat, 11 Jan 2020 05:04:10 +0200

Mybatis framework 7: integrating Spring in three ways

Required jar package:   Create a new lib folder and put it into the jar package. After build path -- > add to build path:   Original Dao development example: Under src: create a new core configuration file sqlMapConfig.xml: <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" ...

Added by rowman on Fri, 10 Jan 2020 19:49:24 +0200

mybatis takes notes

mybatis integration springboot Guide Pack <dependency>     <groupId>org.mybatis.spring.boot</groupId>     <artifactId>mybatis-spring-boot-starter</artifactId>     <version>1.3.2</version> </dependency> <dependency>     <groupId>mysql</groupId>     <artifactId>mysql ...

Added by merkinmuffley on Mon, 06 Jan 2020 19:01:03 +0200

Create a database connection pool of your own

thinking 1. My idea is to save JDBC connection thread with a linked list. When a connection calls the close method, it also proves that the life of the connection thread is ending, so the connection is recycled through the reflection agent. Add a new connection thread at. 2. When we get the connection to the thread pool, ge ...

Added by ttmt on Sun, 05 Jan 2020 22:33:27 +0200

Nine built-in objects and scopes of jsp

1. pageContext saves data in only one page <body> <% // Set the data key - > value of two page ranges pageContext.setAttribute("name","page Wang Er Xiao"); pageContext.setAttribute("age",12); %> <% // Value String name=(String)pageContext.getAttribute("name"); int age=(Integer)pageContext.getAttribute(" ...

Added by vexious on Thu, 02 Jan 2020 00:30:39 +0200

springboot -- multiple data sources

This paper mainly introduces how to configure two data sources (mysql and oracle) in a spring boot project; 1. Import related dependence <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <s ...

Added by DjNaF on Sun, 29 Dec 2019 19:42:04 +0200

Two ways to create a database connection pool

Understanding of using DBCP and CP30 to create database connection pool (for college students, please correct if there is something wrong) DBCP creates database connection pool CP30C create database connection pool Why use this first? First of all, in the early stage, I believe that many small partners will connect to the ...

Added by frost110 on Mon, 16 Dec 2019 18:43:09 +0200

Can't SpringBoot+Mysql save emoj expression?

Especially remember a long time ago, if you want to save emoj expressions in mysql, you need to transcode emoj expressions and save them. Every time you read them, you need to decode and restore them. Every time you do this sb operation, you really feel the heart jam. Is there any way to save them directly? mysql itself can support emoj express ...

Added by dvd420 on Fri, 13 Dec 2019 06:49:31 +0200