spring-boot+mybatis-plus连接Oracle数据库，及查询相关数据

配置java

略（这里我用的是jdk1.8）

配置maven

• 环境变量：

• M2_HOME：D:\LJ\software\java\maven\apache-maven-3.6.3

• Path：%M2_HOME%\bin

• 仓库/jdk/镜像云设置(./config/sitting)

• 仓库 <localRepository> D:/LJ/software/java/maven/apache-maven-3.6.3/maven_repository </localRepository>

• 阿里云镜像

  <mirror><id>nexus-aliyun</id><mirrorOf>central</mirrorOf><name>Nexus aliyun</name><url>http://maven.aliyun.com/nexus/content/groups/public</url></mirror>
  

• jdk

  <profile><id>jdk-1.8</id><activation><activeByDefault>true</activeByDefault><jdk>1.8</jdk></activation><properties><maven.compiler.source>1.8</maven.compiler.source><maven.compiler.target>1.8</maven.compiler.target><maven.compiler.compilerVersion>1.8</maven.compiler.compilerVersion></properties></profile>
  

配置安装ojdbc

maven版本不匹配可能会安装失败，这里使用的是maven3.6.3，可是试试maven在线仓库提供的版本包（如本例的pom.xml所示），如果无法使用再自己到官网下载ojdbc.jar安装。

官网下载ojdbc.jar

***Oracel11g与ojdbc5/ojdbc6版本匹配

打包示例如下：

mvn install:install-file -Dfile=D:\LJ\software\java\jar\orcl\ojdbc8.jar -DgroupId=com.oracle -DartifactId=ojdbc8 -Dversion=1.0 -Dpackaging=jar -DgeneratePom=true
mvn install:install-file -Dfile=ojdbc6-11.1.0.7.jar -DgroupId=com.oracle -DartifactId=ojdbc6 -Dversion=11.1.0.7 -Dpackaging=jar -DgeneratePom=true

Spring-boot测试

测试环境主要关注点

• 主要依赖环境mybatisplus，ojdbc6
• 检查依赖是否冲突
• 检查Oracle相关服务是否启动
• 检查查询实体类与数据库表是否吻合
• 注意Oracle引擎版本类型

Pom.xml依赖

<dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter</artifactId><version>2.3.7.RELEASE</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><version>2.3.7.RELEASE</version></dependency>
<!--        <dependency>-->
<!--            <groupId>com.oracle</groupId>-->
<!--            <artifactId>ojdbc8</artifactId>-->
<!--            <version>1.0</version>-->
<!--        </dependency>--><dependency><groupId>com.oracle.database.jdbc</groupId><artifactId>ojdbc6</artifactId><version>11.2.0.4</version></dependency><dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus-boot-starter-test</artifactId><version>3.4.1</version></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>1.16.10</version><scope>provided</scope></dependency></dependencies>

配置Oracle登录信息（application.yml)

spring:datasource:username: LIJINpassword: 123456789url: jdbc:oracle:thin:@127.0.0.1:1521:ORCLdriver-class-name: oracle.jdbc.OracleDriver
#    driver-class-name: oracle.jdbc.driver.OracleDriver

测试

实体类

package org.example.entities;import lombok.Data;@Data
public class Users {Integer id;String name;String psword;
}

Mapper接口

package org.example.Mapper;import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import org.example.entities.Users;public interface UserMapper extends BaseMapper<Users> {
}

在启动类中扫描注册Mapper【MapperScan】

package org.example;import org.example.Mapper.UserMapper;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;@MapperScan("org.example.Mapper")
@SpringBootApplication
public class OrclApp {public static void main(String[] args) {SpringApplication.run(OrclApp.class,args);}
}

测试

package org.example;import org.example.Mapper.UserMapper;
import org.example.entities.Users;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;import java.util.List;@SpringBootTest
public class OrclTest {@AutowiredUserMapper userMapper;@Testpublic void testOrl(){List<Users> userList=userMapper.selectList(null);userList.forEach(System.out::println);}
}