本篇内容介绍了“怎么使用ScalikeJDBC操作MySQL数据库”的有关知识，在实际案例的操作过程中，不少人都会遇到这样的困境，接下来就让小编带领大家学习一下如何处理这些情况吧！希望大家仔细阅读，能够学有所成！

环境：

IDEA+Maven+ScalikeJDBC+MySQL5.6

1 新建Maven的Scala工程

2 pom.xml文件添加依赖：

<properties>

<scala.version>2.11.8</scala.version>

<!-- 添加scalikejdbc 和 mysql 的version 定义 -->

<scalikejdbc.version>2.5.2</scalikejdbc.version>

<mysql.version>5.6.23</mysql.version>

</properties>

<dependencies>

<!-- 添加scalikejdbc的dependency -->

<dependency>

<groupId>org.scalikejdbc</groupId>

<artifactId>scalikejdbc_2.11</artifactId>

<version>${scalikejdbc.version}</version>

</dependency>

<dependency>

<groupId>org.scalikejdbc</groupId>

<artifactId>scalikejdbc-config_2.11</artifactId>

<version>${scalikejdbc.version}</version>

</dependency>

<!-- 添加mysql的dependency -->

<dependency>

<groupId>mysql</groupId>

<artifactId>mysql-connector-java</artifactId>

<version>${mysql.version}</version>

</dependency>

<dependency>

<groupId>ch.qos.logback</groupId>

<artifactId>logback-classic</artifactId>

<version>1.2.3</version>

</dependency>

</dependencies>

3 新增Scala对象

package com.ruozedata

import scalikejdbc._

object ScalaLikeJdbc {

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

// 加载驱动

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

// 指定数据库连接url，userName，password

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

val userName = "root"

val password = "root"

// 设置数据库连接参数

val settings = ConnectionPoolSettings(

initialSize = 5,

maxSize = 20,

connectionTimeoutMillis = 3000L,

validationQuery = " select 1 from test ") // test表是专门创建的一个测试表

// 构建数据库连接池

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

// 新增数据

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) // 打印 insertResult 变量的值，如果新增成功，返回1，否则返回0

// 定义User类

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

// 查询数据操作

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()

}

// 循环遍历 users对象 并输出

for(user <- users) {

println(user.id + "," + user.name + "," + user.age)

}

}

}

4 添加jdbc的MySQL驱动包

mysql-connector-java-commercial-5.1.25-bin.jar

5 运行结果如下：

SLF4J: Class path contains multiple SLF4J bindings.

SLF4J: Found binding in [jar:file:/D:/software/apache-maven-3.3.9/repository/org/slf4j/slf4j-log4j12/1.7.16/slf4j-log4j12-1.7.16.jar!/org/slf4j/impl/StaticLoggerBinder.class]

SLF4J: Found binding in [jar:file:/D:/software/apache-maven-3.3.9/repository/ch/qos/logback/logback-classic/1.2.3/logback-classic-1.2.3.jar!/org/slf4j/impl/StaticLoggerBinder.class]

SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.

SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]

log4j:WARN No appenders could be found for logger (scalikejdbc.ConnectionPool$).

log4j:WARN Please initialize the log4j system properly.

log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

1

1,Zhangsan,15

2,Ruoze,16

3,Jepson,17

Process finished with exit code 0

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