Shulou(Shulou.com)05/31 Report--

This article introduces the knowledge of "how to use ScalikeJDBC to operate MySQL database". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Environment:

IDEA+Maven+ScalikeJDBC+MySQL5.6

1 New Scala project for Maven

2 add dependencies to pom.xml files:

2.11.8

2.5.2

5.6.23

Org.scalikejdbc

Scalikejdbc_2.11

${scalikejdbc.version}

Org.scalikejdbc

Scalikejdbc-config_2.11

${scalikejdbc.version}

Mysql

Mysql-connector-java

${mysql.version}

Ch.qos.logback

Logback-classic

1.2.3

3 add Scala object

Package com.ruozedata

Import scalikejdbc._

Object ScalaLikeJdbc {

Def main (args: Array [String]): Unit = {

/ / load driver

Class.forName ("com.mysql.jdbc.Driver")

/ / specify database connection url,userName,password

Val url = "jdbc:mysql://192.168.1.108:3306/ruozedata?useUnicode=true&characterEncoding=UTF8"

Val userName = "root"

Val password = "root"

/ / set database connection parameters

Val settings = ConnectionPoolSettings (

InitialSize = 5

MaxSize = 20

ConnectionTimeoutMillis = 3000L

ValidationQuery = "select 1 from test") / / test table is a specially created test table

/ / build database connection pool

ConnectionPool.singleton (url, userName, password, settings)

/ / New data

Val insertResult: Int = DB autoCommit {implicit session = >

SQL ("insert into user (id, name,age) values"). Bind (1, "Zhangsan", 15). Update (). Apply ()

SQL ("insert into user (id, name,age) values"). Bind (2, "Ruoze", 16). Update (). Apply ()

SQL ("insert into user (id, name,age) values"). Bind (3, "Jepson", 17). Update (). Apply ()

}

Println (insertResult) / / prints the value of the insertResult variable. If the addition is successful, it returns 1, otherwise 0.

/ / define the User class

Case class User (id: Int, name: String, age: Int)

/ / query data operation

Val allColumns = (rs: WrappedResultSet) = > User (

Id = rs.int ("id")

Name = rs.string ("name")

Age = rs.int ("age"))

Val users: List [User] = DB readOnly {implicit session = >

SQL ("select * from user") .map (allColumns) .list.apply ()

}

/ / Loop through the users object and output

For (user

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